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A6902D Datasheet(PDF) 1 Page - STMicroelectronics

Part # A6902D
Description  Up to 1 A step down switching regulator with adjustable current limit for automotive applications
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

A6902D Datasheet(HTML) 1 Page - STMicroelectronics

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May 2008
Rev 3
1/12
1
A6902D
Up to 1 A 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 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
Applications
■ Automotive applications
■ Adjustable current generator
■ Simple step-down converters with adjustable
current limit
SO-8
Figure 1.
Application schematic
R1
5.6kO
R2
3.3kO
R3
5.1kO
Rsense
100mO
C1
10µF
35V
C2
22nF
C3
220pF
C4
100µF
10V
L1 22µH
D1
STPS340U
L6902D
VCC
VREF
COMP
GND
FB
OUT
CS+
CS-
VIN=8V to 36V
VOUT=3.3V
VIN=8V to 36V
R1
5.6kO
R2
3.3kO
R3
5.1kO
Rsense
100mO
C1
10µF
35V
C2
22nF
C3
220pF
C4
100µF
10V
L1 22µH
D1
STPS340U
L6902D
VCC
VREF
COMP
GND
FB
OUT
CS+
CS-
VIN=8V to 36V
VOUT=3.3V
VIN=8V to 36V
www.st.com


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