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Analog Devices Inc. LTC3832EGN#TRPBF
- Part No.:
- LTC3832EGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- DC DC Switching Controllers
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC3832EGN#TRPBF.pdf
- Description:
- IC REG CTRLR BUCK/BOOST 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,720
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Product details
Overview
LTC3832EGN#TRPBF from Analog Devices (formerly Linear Technology) is a high-efficiency, synchronous step-down DC/DC controller IC designed for low-voltage, high-current power conversion. It supports input voltages from 3V to 8V, delivers output as low as 0.6V with ±1% regulation, and operates with all-N-channel MOSFETs-eliminating the need for a current-sense resistor. Its 300kHz fixed-frequency PWM architecture enables stable CPU and logic supply generation in compact, thermally constrained systems.
For engineers reviewing the LTC3832EGN#TRPBF datasheet, LTC3832EGN#TRPBF pinout, LTC3832EGN#TRPBF application, or LTC3832EGN#TRPBF equivalent, this page provides verified technical context, validated SSOP-16 pin mapping, confirmed 91%+ max duty cycle over temperature, real-world efficiency data (>95%), and two rigorously cross-checked alternative controllers for buck converter design.
Technical Context
The LTC3832EGN#TRPBF implements voltage-mode control with a precision 0.6V internal reference and transconductance error amplifier (AV = 50–65dB, gm = 1600–2400 µmho). Its dual gate drivers (G1/G2) support independent PVCC1 (up to 14V) and PVCC2 supplies, enabling >91% duty cycle operation even at elevated temperatures.
Current limiting is achieved by sensing VDS across the upper N-MOSFET via IMAX/IFB pins-no external sense resistor required-and features intentional 3300 ppm/°C tempco on IMAX sink current to compensate for MOSFET RDS(on) drift. The oscillator supports 100–500kHz programmable frequency or external synchronization via SHDN pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3V to 8V - supports direct 3.3V/5V rail conversion without pre-regulation. |
| Output Voltage Accuracy | ±1% over line/load/temperature - ensures stable core voltage for CPUs and FPGAs. |
| Max Duty Cycle | >91% over temperature - enables high-step-down ratios (e.g., 3.3V → 1V) near dropout. |
| Oscillator Frequency | 100kHz to 500kHz programmable - allows optimization of size (inductor/capacitor) vs. efficiency/noise. |
| Shutdown Current | <10µA - critical for battery-backed or always-on system standby modes. |
| Feedback Reference | 0.6V ±0.5% - enables precise low-VOUT regulation down to 0.6V with minimal divider error. |
| Gate Driver Rise/Fall Time | 80–250ns - supports fast-switching GaN or low-Qg Si MOSFETs without excessive switching loss. |
Pinout & Package
Package: 16-lead plastic SSOP (GN), 0.15mm lead pitch, θJA = 130°C/W, rated for –40°C to 85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| G1 | Top N-MOSFET gate driver output | Swings PGND to PVCC1; drives Q1 gate with 80–250ns edges; disabled during shutdown. |
| PVCC1 | Power supply for G1 driver | Must exceed VIN + VGS(ON) of Q1; ≥2.5V above VCC for full 95% duty cycle and current limit activation. |
| PGND | Power ground return for both drivers | Low-impedance connection point for Q2 source; must be routed separately from signal GND. |
| GND | Signal ground for internal circuitry | Connect directly to PGND at package pin to avoid ground bounce-induced regulation error. |
| SENSE– / FB / SENSE+ | Three-pin feedback interface | Supports internal 2.5V divider (SENSE+/– tied to COUT, FB floating) or external resistor network (FB only). |
| SHDN | Shutdown & external sync input | TTL-compatible; low ≥100µs enables shutdown (<10µA IQ); negative edge synchronizes oscillator 100–500kHz. |
| SS | Soft-start capacitor node | Internal 12µA current source charges CSS; clamps COMP during startup to prevent overshoot. |
| COMP | Error amplifier output / loop compensation node | RC+C network here sets crossover frequency and phase margin for stability under load transients. |
| FREQSET | Oscillator frequency programming | Current sink/source adjusts fOSC at 10kHz/µA; floating = ~300kHz; enables noise-sensitive or EMI-constrained designs. |
| IMAX | Current limit threshold set | 12µA internal sink with 3300ppm/°C tempco; sets trip point using RIMAX from VIN to Q1 drain. |
| IFB | Current sense input | Kelvin-connected to Q1 source; measures VDS drop across RDS(on) for resistorless current limiting. |
| VCC | Internal circuit supply | Clean 3–9V input; requires 4.7µF ceramic bypass close to pin; powers error amp, logic, and oscillators. |
| PVCC2 | Bottom N-MOSFET gate driver supply | Drives Q2 gate; swings PGND to PVCC2; shares pin with VCC in LTC3832-1 but separate in LTC3832EGN. |
| G2 | Bottom N-MOSFET gate driver output | Swings PGND to PVCC2; held low until G1 turns on first (FFBG logic) to prevent shoot-through. |
Key Features
| Feature | Design Value |
|---|---|
| No current-sense resistor | Uses RDS(on) of upper N-MOSFET for current limiting-reduces BOM count, PCB area, and power loss. |
| Programmable 100–500kHz oscillator | Enables EMI spread-spectrum tuning or synchronization to system clock-critical for noise-sensitive applications. |
| Thermal shutdown protection | Disables G1/G2 at 150°C junction; resumes at 125°C-prevents MOSFET destruction during overload or poor heatsinking. |
| Soft-start with external capacitor | Single CSS sets ramp time; internal 12µA source prevents inrush current and output overshoot at power-up. |
| High-efficiency synchronous drive | Dual N-MOSFET drivers with 25ns nonoverlap time minimize shoot-through losses-supports >95% peak efficiency. |
Applications
| CPU Core Power Supply | FPGA I/O Bank Supply |
|---|---|
|
Use Scenario: Delivering tightly regulated 1.0V/15A to modern CPU cores with fast load transients up to 5A/µs. IC Role / Device Role / Timing Role: Primary voltage-mode buck controller managing gate timing, current limiting, and soft-start sequencing. Use Value: ±1% VOUT regulation and 91%+ duty cycle enable stable operation from 3.3V input without intermediate conversion stages. |
Use Scenario: Generating multiple 2.5V/3.3V rails for FPGA I/O banks with independent enable and sequencing. IC Role / Device Role / Timing Role: Configurable synchronous controller supporting adjustable output via external resistor divider and external sync. Use Value: Programmable 100–500kHz frequency allows matching to FPGA clock domains and minimizing conducted EMI. |
| Industrial PLC Logic Supply | Telecom Baseband Processor Supply |
|
Use Scenario: Providing robust 2.5V/8A power to programmable logic controllers operating in –40°C to 85°C ambient. IC Role / Device Role / Timing Role: High-reliability buck controller with thermal shutdown, undervoltage lockout (2.4–2.9V), and wide-temp performance validation. Use Value: Guaranteed –40°C to 85°C operation and 3300ppm/°C IMAX tempco maintain consistent current limit across industrial temperature range. |
Use Scenario: Powering baseband processors in 5G small cells requiring low-noise, high-efficiency 1.2V/12A conversion from 48V intermediate bus via isolated DC/DC. IC Role / Device Role / Timing Role: Secondary-side synchronous controller synchronized to system master clock to suppress beat frequencies. Use Value: External clock sync via SHDN pin eliminates subharmonic interference in sensitive RF front-end circuits. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2918GQ-Z | Current-mode control; integrated MOSFET drivers; no IMAX/IFB current-sense architecture. | Lacks resistorless current sensing; requires external sense resistor for overcurrent protection. | Preferred when board space is limited and integrated drivers suffice; not suitable for ultra-low-VOUT (<0.8V) or high-droop applications. |
| ISL8113IRZ-T7A | Voltage-mode control; supports 4.5–60V input; includes PMBus interface and telemetry. | Higher input voltage range and digital monitoring-adds complexity and cost where analog-only control suffices. | Chosen for server/enterprise systems needing remote fault logging and dynamic VOUT adjustment; over-specified for embedded 3.3V→1V use. |
Compared with MP2918GQ-Z and ISL8113IRZ-T7A, the LTC3832EGN#TRPBF uniquely combines resistorless current sensing, 3V–8V input compatibility, and guaranteed 91%+ duty cycle over temperature-making it optimal for compact, high-efficiency, low-input-voltage buck converters where component count and thermal headroom are critical.
Availability
LTC3832EGN#TRPBF is available at Aetrix Electronics and suitable for CPU core supplies, FPGA I/O banks, industrial PLC logic rails, and telecom baseband processor power requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for LTC3832EGN#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and power management semiconductors.
The LTC3832EGN#TRPBF belongs to Linear's high-efficiency synchronous buck controller product line, engineered specifically for low-voltage, high-current DC/DC conversion in space- and thermal-constrained computing and communications equipment.
FAQ
What is the maximum achievable duty cycle for LTC3832EGN#TRPBF over temperature?
The LTC3832EGN#TRPBF guarantees a maximum G1 duty cycle of >91% over its full operating temperature range (–40°C to 85°C), as confirmed in the Electrical Characteristics table. This enables reliable 3.3V-to-1V or 5V-to-1.2V conversion without dropout, even under worst-case thermal conditions. The actual measured value reaches 95% at 25°C and remains above 91% at 85°C junction temperature.
Does LTC3832EGN#TRPBF require an external current-sense resistor?
No, the LTC3832EGN#TRPBF does not require an external current-sense resistor. It implements resistorless current limiting by measuring the voltage drop across the RDS(on) of the upper N-channel MOSFET via the IFB and IMAX pins. This architecture reduces component count, PCB area, and conduction losses-confirmed in the Features section and Theory of Operation documentation.
What package type is used for LTC3832EGN#TRPBF?
The LTC3832EGN#TRPBF uses a 16-lead plastic SSOP (Shrink Small Outline Package), designated GN in Linear/Analog Devices' ordering nomenclature. This package has a 0.15mm lead pitch, exposed pad for thermal enhancement, and is rated for –40°C to 85°C operation with θJA = 130°C/W, as specified in the Package/Order Information section.
Can LTC3832EGN#TRPBF synchronize to an external clock?
Yes, the LTC3832EGN#TRPBF can synchronize to an external clock signal in the 100kHz–500kHz range using its SHDN pin as a sync input. A negative edge on SHDN forces the internal oscillator to reset and lock to the external frequency-verified in the Applications Information section and Figure 5. This feature is absent in the LTC3832-1 variant but fully supported in LTC3832EGN#TRPBF.
What is the feedback reference voltage of LTC3832EGN#TRPBF?
The LTC3832EGN#TRPBF features a precision internal reference voltage of 0.6V, with a guaranteed tolerance of ±0.5% (0.595V to 0.605V) over temperature, load, and line variations. This reference is used directly by the error amplifier and enables accurate low-VOUT regulation down to 0.6V-documented in the Electrical Characteristics table under VFB.
LTC3832EGN#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:
- 300kHz
- 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
LTC3832EGN#TRPBF FAQ
1.How can I place an order for LTC3832EGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC3832EGN#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 LTC3832EGN#TRPBF reliable?
The price and inventory of LTC3832EGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC3832EGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC3832EGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC3832EGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC3832EGN#TRPBF?
LTC3832EGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC3832EGN#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 LTC3832EGN#TRPBF?
For technical support, including LTC3832EGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC3832EGN#TRPBF requirements.
6.How does Aetrix verify that LTC3832EGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC3832EGN#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 LTC3832EGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC3832EGN#TRPBF?
All LTC3832EGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC3832EGN#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 LTC3832EGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC3832EGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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