RT9953 Datasheet, PDF (2/19 Pages) Richtek Technology Corporation – 4+1 CH Power Management IC

RT9953
Typical Application Circuit
For 2AA
V_BAT
V_{OUT_CH2}
5V
10µF
C5
x2
2.L22µH
C4
10µF
R3
470k
R4
88.7k
RT9953
18 _LX2
LX1 ¹
17 _PVDD2
PVDD1 ²
21 _FB2
FB1 ²²
2.L21µH
C1
10µF
C3
R1
4.7pF 470k
1C02µF x 2
V_BAT
V_{OUT_CH1}
3.6V
R2
133k
3.6V
V_{OUT_CH4}
1.8V
1C0µ^1F1
3.6V
C10
10µF
4.7Lµ^4H
6 _PVDD4
7 _LX4
R7
470k
R8
374k
C12
33pF
V_BAT
4 _FB4
19 _SEL
16 _VDDM
C16
1µF
24 _EN1
Chip Enable
14 _EN2
3 _EN3
20 _EN4
8 _EN5
23, 25 (Exposed Pad) _GND
PVDD3 ¹³
LX3 ^{12 4.L73µH}
FB3 ¹⁵
C9
22pF
PVDD5 ¹¹
VOUT5 ⁹
FB5 ¹⁰
SS ⁵
C15
10pF
C17
0.47nF
C7
10µF
R5
768k
1C08µF
3.6V
V_{OUT_CH3}
2.5V
R6
360k
C13
1µF
R9
47k
3.6V
1Cµ^1F4
V_{OUT_CH5}
2.5V
R10
22.1k
www.richtek.com
2
DS9953-02 April 2011