Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > DC DC Switching Controllers

Analog Devices Inc. LTC3835EGN-1#PBF

Name: LTC3835EGN-1#PBF
Brand: Analog Devices Inc.
SKU: LTC3835EGN-1#PBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: LTC3835EGN-1#PBF

Manufacturer:: Analog Devices Inc.

Category:: DC DC Switching Controllers

Package:: 16-SSOP (0.154", 3.90mm Width)

Datasheet:: LTC3835EGN-1#PBF.pdf

Description:: IC REG CTRLR BUCK 16SSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:100

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

LTC3835EGN-1#PBF from Analog Devices (formerly Linear Technology) is a high-performance, low-quiescent-current synchronous step-down DC/DC controller driving dual N-channel MOSFETs in buck topologies. It delivers 0.8V–10V output voltage with ±1% accuracy, operates from 4V–36V input, and achieves 99% duty cycle for ultra-low dropout-enabling use in automotive battery systems and telecom power supplies.

For engineers reviewing the LTC3835EGN-1#PBF datasheet, LTC3835EGN-1#PBF pinout, LTC3835EGN-1#PBF application, or LTC3835EGN-1#PBF equivalent, key selection criteria include its 80μA no-load IQ, OPTI-LOOP® compensation for wide COUT/ESR flexibility, phase-lockable 140kHz–650kHz frequency range, and absence of CLKOUT, EXTVCC, and PGOOD pins versus the standard LTC3835.

Technical Context

The LTC3835EGN-1#PBF implements a constant-frequency current-mode control architecture with internal 0.8V reference and precision error amplifier. Its ITH pin directly controls peak inductor current via transconductance gm = 1.55 mmho, while the TRACK/SS pin enables soft-start or supply tracking via internal 1μA pull-up current.

It features three selectable light-load modes-Burst Mode® (≤80μA IQ), pulse-skipping, or forced continuous-determined by PLLIN/MODE pin voltage. The device lacks CLKOUT, EXTVCC, and PGOOD functionality compared to LTC3835, and uses only the PLLLPF pin for frequency selection (250kHz/400kHz/530kHz) or external synchronization (140–650kHz).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	4V to 36V - supports 12V/24V automotive, telecom, and industrial rails without pre-regulation.
Output Voltage Accuracy	±1% at 0.8V reference - ensures tight regulation across temperature and load for FPGA/core logic supplies.
No-Load Quiescent Current	80μA - extends battery life in portable digital devices and always-on subsystems.
Switching Frequency Range	140kHz to 650kHz (phase-lockable) - balances efficiency (low f) vs. size (high f) and enables noise-sensitive timing alignment.
Duty Cycle Max	99.4% - enables operation with VIN as low as VOUT + dropout losses, critical for cold-crank automotive conditions.
Shutdown IQ	10μA - minimizes standby power in systems requiring deep sleep states.
Current Sense Threshold	80–115mV - sets precise overcurrent protection and foldback limiting with external RSENSE resistor.

Pinout & Package

Package: 16-Lead Plastic SSOP (GN), exposed pad not present (unlike DFN variant); θJA = 90°C/W; operating junction temperature up to 125°C.

Pin/Terminal	Circuit Role	Design Meaning
PLLIN/MODE	Mode select & sync input	Selects Burst Mode® (≤0.7V), pulse-skipping (0.9–INTVCC−0.5V), or forced continuous (INTVCC); accepts external clock 140–650kHz.
SENSE+, SENSE−	Differential current sense inputs	Monitor high-side MOSFET current via external RSENSE; support common-mode range up to 10V for high-side sensing.
RUN	Enable/disable control	Pull below 0.7V to shut down controller and reduce IQ to 10μA; internal pull-up disabled during shutdown.
TRACK/SS	Soft-start & tracking input	Internal 1μA current charges external capacitor for linear VOUT ramp; also accepts resistor divider for supply tracking.
VFB	Feedback input	Compares resistive divider output against 0.8V reference; ±1% accuracy maintained over −40°C to 85°C.
SGND	Small-signal ground	Must be routed separately from PGND to avoid noise coupling into feedback and error amplifier paths.
PGND	Power ground	Return path for bottom MOSFET source, Schottky anode, and input capacitor; ties to high-current return nodes.
BG, TG	Gate drivers	BG drives bottom N-MOSFET from 0V to INTVCC; TG drives top N-MOSFET with floating bootstrap bias (BOOST referenced).
INTVCC	Internal LDO output	5.25V ±1% regulated supply for drivers and logic; requires ≥4.7μF low-ESR capacitor to PGND.
VIN	Main input supply	Accepts 4–36V; powers INTVCC LDO and provides energy to BOOST capacitor via internal diode.
SW	Switch node	Connects to inductor; swings from ~−0.3V (Schottky drop) to VIN; critical for EMI layout and gate drive integrity.
BOOST	Bootstrap supply	Charged via external diode from INTVCC; provides floating bias for TG driver; voltage = INTVCC + SW swing.
ITH	Error amplifier output	Controls peak inductor current; gm = 1.55 mmho; used for loop compensation and current limit programming.
PLLLPF	PLL loop filter	Connects to RC network when synchronizing; sets frequency to 250kHz (GND), 400kHz (float), or 530kHz (INTVCC) when unsynchronized.

Key Features

Feature	Design Value
OPTI-LOOP® Compensation	Enables stable transient response across wide output capacitance (10μF–1000μF) and ESR ranges without redesigning compensation network.
Adjustable Light-Load Operation	Three user-selectable modes (Burst, pulse-skipping, continuous) optimize efficiency vs. ripple/noise trade-offs per system requirement.
Ultra-Low Dropout Support	99.4% max duty cycle allows VIN as low as 3.35V for 3.3V output - essential for automotive cold-crank and backup power scenarios.
Output Overvoltage Protection	Hardware-based OVLO triggers at >10% above 0.8V reference (i.e., >0.88V at VFB), forcing BG on and TG off until fault clears.
Current Foldback Limiting	Reduces MOSFET conduction time during short-circuit events, lowering thermal stress and enabling safe hiccup or latch-off behavior.

Applications

Automotive Infotainment Power	Telecom Line Card Bias Supply
Use Scenario: Powering DSPs, FPGAs, and display controllers in vehicle head units with 12V battery input subject to cold-crank dips to 3.5V. IC Role / Device Role / Timing Role: Primary synchronous buck controller regulating 1.2V/1.8V/3.3V rails; maintains regulation during 99% duty-cycle dropout events. Use Value: 80μA IQ extends backup runtime; ±1% VOUT accuracy ensures reliable logic operation; no PGOOD simplifies sequencing in cost-sensitive modules.	Use Scenario: Generating isolated 5V/12V bias for analog front-end amplifiers and Ethernet PHYs in modular telecom line cards. IC Role / Device Role / Timing Role: High-efficiency, phase-lockable controller synchronized to system clock to suppress switching noise in sensitive analog signal paths. Use Value: 140–650kHz PLL range enables deterministic noise placement; 4–36V input accommodates varied backplane voltages; soft-start prevents inrush into distributed capacitive loads.
Industrial IoT Sensor Hub	Portable Medical Diagnostic Device
Use Scenario: Regulating 3.3V for ARM Cortex-M microcontrollers and wireless SoCs (BLE/Wi-Fi) powered by Li-ion or 24V industrial bus. IC Role / Device Role / Timing Role: Main DC/DC controller with TRACK/SS pin configured for soft-start to prevent brownout during wake-up from deep sleep. Use Value: 10μA shutdown IQ preserves battery charge; Burst Mode® sustains >85% efficiency at 1mA load; SS ramp avoids reset glitches on MCU startup.	Use Scenario: Providing tightly regulated 1.1V core and 2.5V analog supplies for portable ultrasound or ECG processors with strict EMI and battery-life requirements. IC Role / Device Role / Timing Role: Dual-rail controller using separate feedback dividers and shared TRACK/SS for coordinated power-up sequencing. Use Value: OPTI-LOOP® ensures stability with ceramic output caps; ±1% accuracy meets ADC reference stability specs; low IQ extends single-charge operation beyond 72 hours.

Automotive Infotainment Power

Telecom Line Card Bias Supply

Use Scenario: Powering DSPs, FPGAs, and display controllers in vehicle head units with 12V battery input subject to cold-crank dips to 3.5V.

IC Role / Device Role / Timing Role: Primary synchronous buck controller regulating 1.2V/1.8V/3.3V rails; maintains regulation during 99% duty-cycle dropout events.

Use Value: 80μA IQ extends backup runtime; ±1% VOUT accuracy ensures reliable logic operation; no PGOOD simplifies sequencing in cost-sensitive modules.

Use Scenario: Generating isolated 5V/12V bias for analog front-end amplifiers and Ethernet PHYs in modular telecom line cards.

IC Role / Device Role / Timing Role: High-efficiency, phase-lockable controller synchronized to system clock to suppress switching noise in sensitive analog signal paths.

Use Value: 140–650kHz PLL range enables deterministic noise placement; 4–36V input accommodates varied backplane voltages; soft-start prevents inrush into distributed capacitive loads.

Industrial IoT Sensor Hub

Portable Medical Diagnostic Device

Use Scenario: Regulating 3.3V for ARM Cortex-M microcontrollers and wireless SoCs (BLE/Wi-Fi) powered by Li-ion or 24V industrial bus.

IC Role / Device Role / Timing Role: Main DC/DC controller with TRACK/SS pin configured for soft-start to prevent brownout during wake-up from deep sleep.

Use Value: 10μA shutdown IQ preserves battery charge; Burst Mode® sustains >85% efficiency at 1mA load; SS ramp avoids reset glitches on MCU startup.

Use Scenario: Providing tightly regulated 1.1V core and 2.5V analog supplies for portable ultrasound or ECG processors with strict EMI and battery-life requirements.

IC Role / Device Role / Timing Role: Dual-rail controller using separate feedback dividers and shared TRACK/SS for coordinated power-up sequencing.

Use Value: OPTI-LOOP® ensures stability with ceramic output caps; ±1% accuracy meets ADC reference stability specs; low IQ extends single-charge operation beyond 72 hours.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LTC3835EDHC-1#PBF	Same functional spec but in 3mm × 5mm DFN package with exposed thermal pad (θJA = 43.5°C/W); includes EXTVCC, CLKOUT, PGOOD pins.	Preferred for space-constrained, thermally demanding designs requiring additional monitoring/control signals.	Select when board layout allows smaller footprint and thermal performance is critical; not pin-compatible due to different package and pin count (DHC has 17-pin exposed pad).
MP2315DJ-LF-Z	Monolithic 3A buck converter (integrated MOSFETs); fixed 3.3V/5V options; no PLL, no TRACK/SS, higher IQ (250μA).	Suitable for lower-current, cost-sensitive applications where integration outweighs programmability and ultra-low IQ.	Choose for simplified BOM and layout where 3A output and fixed VOUT suffice; not a drop-in replacement due to differing topology and feature set.

Compared with LTC3835EDHC-1#PBF, LTC3835EGN-1#PBF trades thermal performance and extra pins for SSOP manufacturability and lower component count; versus MP2315DJ-LF-Z, it offers full programmability, sub-100μA IQ, and external MOSFET flexibility at the cost of design complexity.

Availability

LTC3835EGN-1#PBF is available at Aetrix Electronics and suitable for automotive infotainment, telecom line card, and portable medical device applications requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +85°C operation.

Supply support for LTC3835EGN-1#PBF includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, formed through the acquisition of Linear Technology in 2017.

The LTC3835-1 series belongs to ADI's high-efficiency power controller product line, designed specifically for demanding industrial, automotive, and telecom applications where low quiescent current, wide input range, and robust protection features are mandatory.

FAQ

What is the maximum duty cycle supported by the LTC3835EGN-1#PBF?

The LTC3835EGN-1#PBF supports a maximum duty cycle of 99.4%, enabling operation in ultra-low dropout conditions where input voltage approaches output voltage-critical for automotive cold-crank scenarios and backup power systems. This is achieved via internal dropout detection that forces periodic top-FET off-time to recharge the BOOST capacitor.

Does the LTC3835EGN-1#PBF include power-good (PGOOD) functionality?

No, the LTC3835EGN-1#PBF does not include PGOOD functionality. Unlike the standard LTC3835, this variant omits the PGOOD pin (as confirmed in the "Comparison of LTC3835 and LTC3835-1" table). System-level power sequencing must be implemented externally using the RUN pin or downstream monitoring circuits.

How does the TRACK/SS pin function in the LTC3835EGN-1#PBF?

The TRACK/SS pin in the LTC3835EGN-1#PBF serves dual roles: as a soft-start input (charged by internal 1μA current to ramp VOUT) or as a tracking input (accepting resistor-divider voltage from another supply). During startup, the controller regulates VFB to the smaller of 0.8V or the TRACK/SS voltage-ensuring controlled, glitch-free power-up.

What are the frequency selection options for the LTC3835EGN-1#PBF?

The LTC3835EGN-1#PBF offers three fixed frequencies via the PLLLPF pin: 250kHz (PLLLPF = GND), 400kHz (PLLLPF = float), or 530kHz (PLLLPF = INTVCC). It also supports external synchronization from 140kHz to 650kHz via the PLLIN/MODE pin-enabling noise-sensitive system-level clock alignment without modifying component values.

Can the LTC3835EGN-1#PBF operate with input voltages below 4V?

No, the LTC3835EGN-1#PBF has a minimum input voltage of 4V as specified in Absolute Maximum Ratings and Electrical Characteristics. Below this threshold, undervoltage lockout (UVLO) activates at 3.5V (typical), disabling the controller and holding MOSFETs off. It is not rated for sub-4V operation-even briefly-due to internal LDO and gate driver voltage requirements.

LTC3835EGN-1#PBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

Package/Case:: 16-SSOP (0.154", 3.90mm Width)

Packaging:: Tube

Product Status:: Active

Output Type:: Transistor Driver

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Number of Outputs:: 1

Output Phases:: 1

Voltage - Supply (Vcc/Vdd):: 4V ~ 36V

Frequency - Switching:: 250kHz ~ 530kHz

Duty Cycle (Max):: 99.4%

Synchronous Rectifier:: Yes

Clock Sync:: No

Serial Interfaces:: -

Control Features:: Enable, Soft Start, Tracking

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SSOP

LTC3835EGN-1#PBF FAQ

1.How can I place an order for LTC3835EGN-1#PBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC3835EGN-1#PBF on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for LTC3835EGN-1#PBF reliable?

The price and inventory of LTC3835EGN-1#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3835EGN-1#PBF is usually 5 days.

3.What payment methods are accepted for LTC3835EGN-1#PBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3835EGN-1#PBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC3835EGN-1#PBF?

LTC3835EGN-1#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC3835EGN-1#PBF order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for LTC3835EGN-1#PBF?

For technical support, including LTC3835EGN-1#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3835EGN-1#PBF requirements.

6.How does Aetrix verify that LTC3835EGN-1#PBF is sourced from the original manufacturer or authorized distributors?

All LTC3835EGN-1#PBF products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that LTC3835EGN-1#PBF meets industry standards.

7.What is the process for return or replacement of LTC3835EGN-1#PBF?

All LTC3835EGN-1#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3835EGN-1#PBF, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The LTC3835EGN-1#PBF part is unused and in its original packaging.

Return procedure for LTC3835EGN-1#PBF:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…