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ST L6902D013TR product image
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ST L6902D013TRRoHS

Manufacturer
ST
MPN
L6902D013TR
LCSC Part #
C500664
Packaging
SOIC-8
Customer #
Key Attributes
Up to 1 A switching regulator with adjustable current limit
Datasheetpdf iconST L6902D013TR

Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Power Management (PMIC)/Voltage Regulators - DC DC Switching Regulators
ManufacturerST
PackagingSOIC-8
Operating Temperature-40℃~+150℃@(TJ)
Frequency - Switching250kHz
FunctionStep-down type
Number of Outputs1
FeaturesAdjustable current limiting;Overcurrent Protection
Output TypeAdjustable
TopologyBuck
Operating Voltage8V~36V
Switch tube (built-in/external)Built-in
Output Voltage1.235V~34V
Output Current1A
Quiescent Current3mA
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging2500
Sales UnitPiece

Introduction

AI Translation

The L6902D is a complete and simple step down switching regulator with adjustable current limit. Based on a voltage mode structure it integrates a current error amplifier to have a constant voltage and constant current control. By means of an on board current sense resistor and the availability of the current sense pins (both compatible to Vcc and for Cs- compatible with GND too) a current limit programming is very simple and accurate (±5%). Moreover constant current control can be used to charge NiMH and NiCd batteries. The device can be used as a standard DC/DC converter with adjustable current limit (set by using the external sense resistor). The internal robust P-channel DMOS transistor with a typical of 250 mΩ assures high efficiency and a minimum dropout even at high output current level. The internal limiting current (latched function) of typical value of 2.5 A protects the device from accidental output short circuit avoiding dangerous loads damage. If the temperature of the chip goes higher than a fixed internal threshold (150℃ with 20℃ hysteresis), the power stage is turned off. Other protections beside thermal shutdown complete the device for a safe and reliable application: overvoltage protection, frequency folback overcurrent protection and protection vs. feedback disconnection. The internal fixed switching frequency of 250KHz, and the SO-8 package pin allow to built an ultra compact DC/ DC converter with a minimum board space.

Features

AI Translation
  • Up to 1 A output current
  • Operating input voltage from 8 V to 36 V
  • Precise 3.3 V (±2%) reference voltage
  • 5% output current accuracy
  • Output voltage adjustable from 1.235 V to 34 V
  • 250 kHz internally fixed frequency
  • Voltage feedforward
  • Zero load current operation
  • Adjustable current limit
  • Protection against feedback Disconnection
  • Thermal shutdown

Applications

AI Translation
  • Chargers for NiCd, NiMH batteries and preregulator for lithium-ion batteries
  • Adjustable current generator
  • Simple step-down converters with adjustable current limit
  • Battery equipped systems
  • Distributed power supply
  • Mobile PC and subnotebook
In-Stock: 2,456
2,456 In stock, ships now
Add to BOM List
QtyUnit PriceTotal Amount
1+$ 2.6897$ 2.69
10+$ 2.3706$ 23.71
30+$ 2.1704$ 65.11
100+$ 1.9652$ 196.52
500+$ 1.874$ 937.00
1,000+$ 1.8333$ 1833.30
Standard Packaging2500/Full Reel
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