Product overview
Description
The A6902D is a complete step down switching regulator with adjustable current limit. Based on a voltage mode structure it integrates an additional current error amplifier to implement both a constant voltage and constant current control.
The current limit programming is very simple and accurate (± 5%) selecting the proper sensing resistor.
The DC-DC converter can be used either as a voltage source with adjustable current limit (set by using the external sense resistor) or as current source to charge NiMH / NiCd batteries or drive voltage load like LEDs.
The internal P-Channel DMOS transistor (typ. RDSON 250 mΩ) assures high efficiency and minimum dropout even at high output current level.
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All features
- Qualified following the AEC-Q100 requirements
- Up to 1 A DC output current
- Operating input voltage from 8 V to 36 V
- Output voltage adjustable from 1.235 V to 35 V
- Precise 3.3 V (±2 %) reference voltage
- 250 kHz Internally fixed frequency
- Voltage feedforward
- Zero-load current operation
- Internal current limiting
- Protection against feedback disconnection
- Thermal shutdown
eDesignSuite
eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.
Power Management Design Center
Thermal-electrical Simulators for Components
Signal Conditioning Design Tool
NFC/RFID Calculators
Power Supply Design Tool
SMPS design, by topology, by type and by product PFC design with analog and digitial control Supports various PCB configurations 
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Handles AC-DC and DC-DC design in common topologies Displays interactive and annotated schematic Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data 
Digital Power Workbench
Provides a step-by-step optimized design of power section and control loop Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs 
Power Tree Designer
Specify input/output power for each node in the tree Check for consistency Design each individual node 
AC Switches Simulator
Select ratings and application waveforms Get junction temperature and blocking voltage graphs Search and sort suitable devices 
Rectifier Diodes Simulator
Select ratings and application waveforms Estimate power losses Search and sort suitable devices 
STPOWER Studio
Supports long mission profiles Provides power loss and temperature graphs Helps define heatsink thermal properties 
Twister Sim
Help select the right ViPOWER Automotive power device Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis Supports various PCB configurations 
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Specify system ratings and surge waveform Search and sort suitable devices 
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Handles multi-stage-designs and common topologies Returns circuit component values Provides gain, phase and group delay graphs Low Pass, High Pass and Band Pass 
Comparators
Handles most common configurations Returns circuit components values Provides I/O signal waveforms Inverting, Non Inverting, Window 
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Returns circuit component values Provides current error graphs 
High side Current Sensing
Provides current error graphs. Help to select the right High side current sensing and shunt devices. 
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Input geometry and substrate properties Get antenna impedance 
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Enter forward and reverse link characteristics The tool returns link budget estimate 
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Enter antenna parameter and matching target Select the topology of the matching network The tool returns component values for the desired design targets EDA Symbols, Footprints and 3D Models
STMicroelectronics - A6902D
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Symbols
Footprints
3D models
Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| A6902D | NRND | SO-8 | Automotive | Ecopack1 | |
| A6902D13TR | Active | SO-8 | Automotive | Ecopack1 |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from distributors | Order from ST | Marketing Status | ECCN (US) | ECCN (EU) | Packing Type | Package | Temperature (°C) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | |||||||||||
| A6902D | distributors No availability of distributors reported, please contact our sales office | NRND | EAR99 | NEC | Tube | SO-8 | -40 | 125 | CHINA | | ||
| A6902D13TR | distributors No availability of distributors reported, please contact our sales office | Active | EAR99 | NEC | Tape and Reel | SO-8 | -40 | 125 | CHINA | | ||
(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors