A6902D| Datasheet

A6902D, A6902D13TR

Datasheet preview, take a look at Datasheets before downloading (Data Sheet is available on manufacturer site)

A6902D
Up to 1A step down switching regulator with adjustable current limit for automotive applications
Features

Qualified following the AEC-Q100 requirements (temperature Grade 3), see PPAP for more details. Temperature range -40 C to 85 C Up to 1A DC output current Operating input voltage from 8V to 36V Output voltage adjustable from 1.235V to 35V Precise 3.3V ( 2%) reference voltage 250kHz Internally fixed frequency Voltage feedforward Zero load current operation Internal current limiting Protection against feedback disconnection Thermal shutdown
SO-8

Description
The A6902D is a complete and simple step down switching regulator with adjustable current limit, capable to deliver up to 1A at output voltages from 1.2V to 35V. The internal robust P-channel DMOS transistor with a typical of 250m assures high efficiency and a minimum dropout even at high output current level. 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.

Applications

Dedicated to automotive applications Adjustable current generator Simple step-down converters with adjustable current limit

Figure 1.

Typical application
VCC VREF OUT L1 22uH D1 Rsense 100mO R1 5.6kO C4 100uF 10V R3 5.1kO GND R2 3.3kO VOUT=3.3V

VIN=8V to 36V

VIN=8V to 36V C1 10uF 35V C3 220pF C2 22nF

COMP

L6902D

CS+ CSFB

STPS340U

November 2007

Rev 2