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A6902D_0808 Datasheet, PDF (1/12 Pages) STMicroelectronics – Up to 1 A step down switching regulator with adjustable current limit for automotive applications | |||
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A6902D
Up to 1 A step down switching regulator with adjustable
current limit for automotive applications
Features
â Qualified following the AEC-Q100
requirements (temperature grade 3), see
PPAP for more details.
â Up to 1 A DC output current
â Operating input voltage from 8 V to 36 V
â Output voltage adjustable from 1.235 V to 35 V
â Precise 3.3 V (±2 %) reference voltage
â 250 kHz Internally fixed frequency
â Voltage feedforward
â Zero load current operation
â Internal current limiting
â Protection against feedback disconnection
â Thermal shutdown
Applications
â Automotive applications
â Adjustable current generator
â Simple step-down converters with adjustable
current limit
SO-8
Figure 1. Application schematic
VIN=8V to 36V
C1
10µF
35V
VIN=8V to 36V
C3
220pF
VCC
VREF
COMP
C2
22nF
R3
5.1kO
L6902D
GND
OUT
CS+
CS-
FB
L1 22µH
D1
STPS340U
Rsense
100mO
VOUT=3.3V
R1
5.6kO
R2
3.3kO
C4
100µF
10V
August 2008
Rev 4
1/12
www.st.com
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