STMicroelectronics L6902D
The L6902D is a complete and simple step down switching regulator with adjustable current limit. 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%). The device can be used as a standard DC/DC converter with adjustable current limit (set by using the external sense resistor).| Part No. | L6902D |
|---|---|
| Datasheet | L6902D Download |
| Manufacturer |  STMicroelectronics |
| Description | Up to 1A switching regulator |
| Buy | Stock & Price |
FEATURES
● 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
● 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
DESCRIPTION
Based on a voltage mode structure it integrates a current error amplifier to have a constant voltage and constant current control. Moreover constant SO-8 current control can be used to charge NiMH and NiCd batteries. 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.
