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RT8249 Datasheet(PDF) 11 Page - Richtek Technology Corporation

Part # RT8249
Description  Dual-Channel Synchronous DC/DC Step-Down Controller with 5V/3.3V LDOs
PDF  23 Pages
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Manufacturer  RICHTEK [Richtek Technology Corporation]
Direct Link  http://www.richtek.com
Logo RICHTEK - Richtek Technology Corporation

RT8249 Datasheet(HTML) 11 Page - Richtek Technology Corporation

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RT8249A/B/C
11
DS8249A/B/C-02
June 2014
www.richtek.com
©
Copyright
2014 Richtek Technology Corporation. All rights reserved.
is a registered trademark of Richtek Technology Corporation.
C17
3.3V
RT8249C
PHASE1
LGATE1
BOOT1
UGATE1
VIN
12
15
17
18
16
PHASE2
LGATE2
BOOT2
UGATE2
FB2
VIN
10µF
10
8
9
11
4
C13
R8
C10
0.1µF
5.2V to 25V
Q2
L2
C11
0.1µF
R9 0
R14
130k
L1
C2
C3
5V
0.1µF
R3 0
R12
150k
R13
100k
R15
200k
BYP1
14
FB1
2
10µF
C1
PGOOD
7
LDO3
3
C16
1µF
3.3V Always On
VOUT2
VOUT1
0
R4 0
R10 0
BSC0909
NS
10µF
C12
Q1
BSC0909
NS
Q3
BSC0909
NS
3.3µH
R5*
C4*
220µF
C18*
Q4
BSC0909
NS
R11*
C14*
2.2µH
220µF
C21*
LDO5
13
C9
1µF
5V
PGOOD Indicator
CS1
1
CS2
5
R1
16k
R2
16k
21 (Exposed Pad)
GND
EN1
20
Channel 1 Enable
EN2
6
Channel 2 Enable
Off
On
SKIPSEL
19
DEM : 3.3V
ASM : GND
* : Optional
0.1µF
C23



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