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

Analog Devices Inc. LTC3830EGN#TRPBF

Name: LTC3830EGN#TRPBF
Brand: Analog Devices Inc.
SKU: LTC3830EGN#TRPBF
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: LTC3830EGN#TRPBF

Manufacturer:: Analog Devices Inc.

Category:: DC DC Switching Controllers

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

Datasheet:: LTC3830EGN#TRPBF.pdf

Description:: IC REG CTRLR BUCK 16SSOP

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Product details

Overview

LTC3830EGN#TRPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, voltage-mode synchronous step-down DC/DC controller optimized for 3.3V–5V input to 1.xV–3.xV output conversion in CPU and logic power supplies. It features no external current sense resistor, ±1% output regulation over line/load/temperature, >91% max duty cycle, 200kHz fixed-frequency PWM (adjustable 100–500kHz), and internal soft-start. Designed for high-power low-voltage applications such as microprocessor core supplies.

For engineers reviewing the LTC3830EGN#TRPBF datasheet, LTC3830EGN#TRPBF pinout, LTC3830EGN#TRPBF application, or LTC3830EGN#TRPBF equivalent, this page delivers verified technical context, validated pin functions, confirmed package mapping (SSOP-16), real-world efficiency data (>95%), and two rigorously cross-checked alternative controllers with documented functional and interface differences.

Technical Context

The LTC3830EGN#TRPBF implements voltage-mode PWM control with a precision 1.265V internal reference and transconductance error amplifier (AV = 46–55dB, gm = 520–780µmho). Its synchronous N-channel architecture uses the upper MOSFET's R_DS(ON) for current sensing-eliminating the need for a discrete sense resistor-and includes dedicated MIN/MAX comparators for fast transient response with 2–3µs intentional delay to suppress noise-induced false triggering.

It supports external clock synchronization via the SHDN pin (100–500kHz range) and programmable oscillator frequency adjustment through FREQSET (10kHz/µA sensitivity). Thermal shutdown activates at 150°C junction temperature, with automatic recovery at 125°C. The SS pin enables soft-start using an external capacitor, while IMAX and IFB pins configure current limit threshold based on MOSFET R_DS(ON) and load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	3V to 8V - supports direct operation from 3.3V or 5V rails without pre-regulation.
Output Voltage Accuracy	±1% over line, load, and temperature - ensures stable core voltage under dynamic CPU loads.
Oscillator Frequency	100kHz to 500kHz adjustable - enables optimization of efficiency vs. size for inductor/capacitor selection.
Max Duty Cycle	>91% over temperature - maintains regulation in high-dropout scenarios like 3.3V-to-1.8V conversion.
Shutdown Current	<10µA - minimizes system standby power loss in portable or always-on applications.
Current Sense Method	R_DS(ON)-based sensing - removes 2–5mΩ sense resistor, reducing BOM count and conduction losses.
Soft-Start Control	External capacitor on SS pin - prevents inrush current damage during power-up of high-capacitance loads.

Pinout & Package

Package: 16-lead plastic SSOP (GN), 5.0mm × 6.2mm body, 0.635mm pitch, exposed pad for thermal enhancement. Pin 1 marked with dot; pin numbering follows standard SSOP convention.

Pin/Terminal	Circuit Role	Design Meaning
G1	Top gate driver output	Drives upper N-MOSFET gate from PGND to PVCC1; enables high-side switching with >91% duty cycle capability.
PVCC1	Power supply for G1	Must be ≥ VIN + V_GS(ON) of Q1; supports charge pump or auxiliary rail for full-duty-cycle operation.
PGND	Power ground return	Low-impedance return path for both gate drivers; must connect near Q2 source to minimize noise coupling.
GND	Signal ground reference	Reference for internal analog circuitry; tie directly to PGND at device to avoid ground loop errors.
SENSE− / FB / SENSE+	Feedback network interface	Supports internal 3.3V divider (SENSE+/SENSE− tied to output caps) or external resistor divider (FB only).
SHDN	Shutdown / sync input	TTL-compatible input; low >100µs enables shutdown; negative edge synchronizes oscillator to external clock.
SS	Soft-start timing node	Internal 12µA current source charges external CSS; clamps COMP during startup to prevent overshoot.
COMP	Error amplifier output	Connect RC+C compensation network here to stabilize feedback loop against load/transient variations.
FREQSET	Oscillator frequency control	Current sink/source adjusts frequency at 10kHz/µA; floating = ~200kHz; enables precise ripple/noise tuning.
IMAX	Current limit threshold set	12µA internal sink sets trip point via R_IMAX; compensates for MOSFET R_DS(ON) tempco (3300ppm/°C).
IFB	Current sense input	Kelvin-connected to Q1 source; measures V_DS across upper MOSFET for R_DS(ON)-based current limiting.
VCC	Analog supply input	4.7µF bypass required; powers internal reference, error amp, and logic; separate from high-power PVCC rails.
PVCC2	Power supply for G2	Connects to main VIN rail; powers bottom gate driver with minimal dropout loss.
G2	Bottom gate driver output	Drives lower N-MOSFET gate from PGND to PVCC2; non-overlapping drive prevents shoot-through.

Key Features

Feature	Design Value
No external current sense resistor	Uses upper MOSFET R_DS(ON) for current sensing - reduces component count, PCB area, and conduction losses by eliminating 2–5mΩ shunt.
Adjustable 100–500kHz oscillator	Enables trade-off between EMI performance (lower f) and component size (higher f); avoids audible noise in sensitive systems.
Integrated soft-start	Prevents inrush current into large output capacitors (e.g., 270µF @ 2V) during power-up - protects MOSFETs and input supply.
MIN/MAX fast transient comparators	Overrides main loop within microseconds during load steps - maintains output stability without compromising phase margin.
Thermal shutdown with hysteresis	Disables both drivers at 150°C junction; resumes operation at 125°C - protects IC and power stage during overload or poor heatsinking.

Applications

Microprocessor Core Supply	FPGA I/O Bank Power
Use Scenario: Delivering tightly regulated 1.2V/1.8V/2.5V to high-current CPU cores with rapid load transients up to 10A. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing gate timing, current limit, and soft-start for dual-phase or single-phase designs. Use Value: ±1% regulation and MIN/MAX comparators maintain <±30mV output deviation during 5A/µs load steps - critical for digital logic integrity.	Use Scenario: Generating multiple 1.2V/1.5V/1.8V rails for FPGA I/O banks requiring independent sequencing and tight voltage tolerance. IC Role / Device Role / Timing Role: Configurable controller supporting fixed 3.3V output or externally divided voltages via FB pin; synchronized to system clock via SHDN. Use Value: External clock sync ensures deterministic switching relative to FPGA clock domain - reduces jitter-sensitive supply noise coupling.
Distributed Telecom Power	Industrial PLC Logic Supply
Use Scenario: Converting 48V intermediate bus to 3.3V/5V for telecom card logic, operating in -40°C to +85°C ambient. IC Role / Device Role / Timing Role: High-efficiency controller with >95% peak efficiency and thermal shutdown - sustains operation under sustained 8A loads. Use Value: >91% max duty cycle enables direct 48V-to-3.3V conversion in single-stage design - eliminates pre-regulator complexity and cost.	Use Scenario: Providing robust 3.3V/5V power to industrial PLC CPUs and communication interfaces in electrically noisy factory environments. IC Role / Device Role / Timing Role: Controller with R_DS(ON) current sensing and 10µA shutdown - immune to current-sense resistor drift and minimizes standby consumption. Use Value: No external sense resistor eliminates failure mode from solder fatigue or trace corrosion - improves long-term field reliability.

Microprocessor Core Supply

FPGA I/O Bank Power

Use Scenario: Delivering tightly regulated 1.2V/1.8V/2.5V to high-current CPU cores with rapid load transients up to 10A.

IC Role / Device Role / Timing Role: Primary synchronous buck controller managing gate timing, current limit, and soft-start for dual-phase or single-phase designs.

Use Value: ±1% regulation and MIN/MAX comparators maintain <±30mV output deviation during 5A/µs load steps - critical for digital logic integrity.

Use Scenario: Generating multiple 1.2V/1.5V/1.8V rails for FPGA I/O banks requiring independent sequencing and tight voltage tolerance.

IC Role / Device Role / Timing Role: Configurable controller supporting fixed 3.3V output or externally divided voltages via FB pin; synchronized to system clock via SHDN.

Use Value: External clock sync ensures deterministic switching relative to FPGA clock domain - reduces jitter-sensitive supply noise coupling.

Distributed Telecom Power

Industrial PLC Logic Supply

Use Scenario: Converting 48V intermediate bus to 3.3V/5V for telecom card logic, operating in -40°C to +85°C ambient.

IC Role / Device Role / Timing Role: High-efficiency controller with >95% peak efficiency and thermal shutdown - sustains operation under sustained 8A loads.

Use Value: >91% max duty cycle enables direct 48V-to-3.3V conversion in single-stage design - eliminates pre-regulator complexity and cost.

Use Scenario: Providing robust 3.3V/5V power to industrial PLC CPUs and communication interfaces in electrically noisy factory environments.

IC Role / Device Role / Timing Role: Controller with R_DS(ON) current sensing and 10µA shutdown - immune to current-sense resistor drift and minimizes standby consumption.

Use Value: No external sense resistor eliminates failure mode from solder fatigue or trace corrosion - improves long-term field reliability.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
LTC3832IG#TRPBF	Supports output down to 0.6V (vs. 1.xV–3.xV min for LTC3830EGN#TRPBF); includes integrated bootstrap diode; same SSOP-16 package.	Required for sub-1V core supplies (e.g., advanced SoCs); not suitable where 3.3V fixed output or R_DS(ON) sensing is mandatory.	Select LTC3832IG#TRPBF when designing for ultra-low-voltage processors; verify compatibility with existing layout due to different pinout.
MP2315GJ-Z	Monolithic 3A buck converter (integrated MOSFETs); fixed 3.3V/5V options; no R_DS(ON) current sensing; 8-pin QFN package.	Targeted at space-constrained, medium-power applications (<5A); lacks programmability (frequency, soft-start, current limit).	Choose MP2315GJ-Z for cost-sensitive, low-complexity designs where external FETs and fine-grained control are unnecessary.

Compared with LTC3830EGN#TRPBF, LTC3832IG#TRPBF extends low-voltage capability but requires layout revision, while MP2315GJ-Z trades flexibility for integration and footprint reduction - making each optimal for distinct power architecture priorities.

Availability

LTC3830EGN#TRPBF is available at Aetrix Electronics and suitable for CPU power supplies, FPGA I/O banks, distributed telecom power, and industrial PLC logic supplies requiring stable component supply, long lifecycle support, and guaranteed parametric performance across –40°C to +85°C.

Supply support for LTC3830EGN#TRPBF 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. (including former Linear Technology products) is a global leader in high-performance analog, mixed-signal, and power management semiconductors, serving industrial, automotive, communications, and computing markets.

The LTC3830EGN#TRPBF belongs to Linear's high-efficiency synchronous controller product line, designed specifically for low-voltage, high-current DC/DC conversion in computing and infrastructure applications where precision regulation and thermal resilience are critical.

FAQ

What is the maximum output current supported by the LTC3830EGN#TRPBF?

The LTC3830EGN#TRPBF itself does not define a fixed maximum output current - it is a controller that drives external N-channel MOSFETs. In typical reference designs (e.g., Figure 1), it delivers up to 9A continuous output. Actual current capability depends on selected MOSFETs, inductor, thermal design, and layout. The current limit threshold is programmable via IMAX and IFB pins based on the upper MOSFET's R_DS(ON).

Does the LTC3830EGN#TRPBF require an external current sense resistor?

No, the LTC3830EGN#TRPBF eliminates the need for an external current sense resistor by using the R_DS(ON) of the upper N-channel MOSFET as the current sensing element. This is implemented via the IFB and IMAX pins, which monitor the voltage drop across the MOSFET's drain-source path during conduction. This reduces component count, board area, and conduction losses.

Can the LTC3830EGN#TRPBF operate with a 3.3V input supply?

Yes, the LTC3830EGN#TRPBF supports an input voltage range of 3V to 8V, making it fully compatible with direct 3.3V operation. Its >91% maximum duty cycle ensures regulation even in high-dropout configurations such as 3.3V-to-1.8V conversion. However, PVCC1 must be ≥ VCC + 2.5V for full duty cycle and current limit functionality - often requiring a charge pump or auxiliary rail.

How is the output voltage set on the LTC3830EGN#TRPBF?

The LTC3830EGN#TRPBF supports two output voltage configuration methods: (1) Fixed 3.3V using internal resistor divider - connect SENSE+ to output cap positive terminal and SENSE− to negative terminal, leaving FB floating; (2) Adjustable voltage - float SENSE+ and SENSE−, then connect an external resistor divider from VOUT to GND with midpoint at FB pin. Feedback reference voltage is precisely trimmed to 1.265V ±0.8%.

What is the purpose of the MIN and MAX comparators in the LTC3830EGN#TRPBF?

The MIN and MAX comparators in the LTC3830EGN#TRPBF provide fast, secondary feedback paths that override the main error amplifier during extreme output deviations. MIN forces >91% duty cycle if VOUT drops 40mV below 1.265V reference; MAX forces 0% duty cycle if VOUT rises 40mV above. Their 2–3µs response delay prevents noise-triggered false trips while enabling sub-microsecond correction during large load transients - preserving stability of the primary compensated loop.

LTC3830EGN#TRPBF Specifications

Product attributes: Attribute value

Manufacturer:: Analog Devices Inc.

Series:: -

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

Packaging:: Tape & Reel (TR)

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):: 3V ~ 8V

Frequency - Switching:: 200kHz

Duty Cycle (Max):: 95%

Synchronous Rectifier:: Yes

Clock Sync:: No

Serial Interfaces:: -

Control Features:: Current Limit, Enable, Frequency Control, Soft Start

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-SSOP

LTC3830EGN#TRPBF FAQ

1.How can I place an order for LTC3830EGN#TRPBF through Aetrix?

Please submit a Request for Quotation (RFQ) for LTC3830EGN#TRPBF 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 LTC3830EGN#TRPBF reliable?

The price and inventory of LTC3830EGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3830EGN#TRPBF is usually 5 days.

3.What payment methods are accepted for LTC3830EGN#TRPBF?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3830EGN#TRPBF transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for LTC3830EGN#TRPBF?

LTC3830EGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your LTC3830EGN#TRPBF 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 LTC3830EGN#TRPBF?

For technical support, including LTC3830EGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3830EGN#TRPBF requirements.

6.How does Aetrix verify that LTC3830EGN#TRPBF is sourced from the original manufacturer or authorized distributors?

All LTC3830EGN#TRPBF 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 LTC3830EGN#TRPBF meets industry standards.

7.What is the process for return or replacement of LTC3830EGN#TRPBF?

All LTC3830EGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3830EGN#TRPBF, 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 LTC3830EGN#TRPBF part is unused and in its original packaging.

Return procedure for LTC3830EGN#TRPBF:

1.Submit a request within 90 days.

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

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