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RT7232 Datasheet(PDF) 7 Page - Richtek Technology Corporation

Part # RT7232
Description  4A, 18V, 650kHz, ACOTTM Synchronous Step-Down Converter
PDF  18 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT7232 Datasheet(HTML) 7 Page - Richtek Technology Corporation

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RT7231/32/33/34
7
DS7231/32/33/34-00
March 2013
www.richtek.com
©
Copyright
2013 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
Typical Application Circuit
* : VCC pin for TSSOP-14 (Exposed Pad) only.
VS pin for TSSOP-14 (Exposed Pad) only.
GND pin for TSSOP-14 (Exposed Pad) only.
PGOOD pin for TSSOP-14 (Exposed Pad) and WDFN-10L 3x3 only.
RT7231/32/33/34
FB
VCC*
VIN
10µF x 2
C1
0.1µF
C2
BOOT
L1
1.4µH
0.1µF
C6
22µF x 2
C7
SW
SS
3.9nF
C5
1µF
C4
VOUT
1.05V/4A
22k
R2
C3
VIN
VS*
8.25k
R1
EN
GND*
PGND
R3
100k
Input Signal
PGOOD*
VREG5
Power GOOD
Table 1. Suggested Component Values (VIN = 12V)
VOUT (V)
R1 (k
Ω)
R2 (k
Ω)
C3 (pF)
L1 (
μH)
C7 (
μF)
1
6.81
22.1
--
1.4
22 to 68
1.05
8.25
22.1
--
1.4
22 to 68
1.2
12.7
22.1
--
1.4
22 to 68
1.8
30.1
22.1
5 to 22
2
22 to 68
2.5
49.9
22.1
5 to 22
2
22 to 68
3.3
73.2
22.1
5 to 22
2
22 to 68
5
124
22.1
5 to 22
3.3
22 to 68
7
180
22.1
5 to 22
3.3
22 to 68



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