Datasheet

ADP1621 Data Sheet
Rev. B | Page 24 of 32
ADP1621
IN
GATE
PGND
AGND
FB
SDSN
COMP
FREQ
GND
PIN
CS
R1
88.7kΩ
1%
R2
10kΩ
1%
C1
47µF
6.3V
L1
10µH
M1
C
COMP
330pF
C
OUT1
10µF
16V
×2
f
OSC
= 600kHz
C1 = MURATA GRM31CR60J476M
C
OUT2
= RUBYCON 25ZL330M8x16
L1 = COILCRAFT MSS1260-103ML
M1 = IRF7470
D1 = VISHAY SSC53L
D2 = SIGNAL DIODE
R
S
200Ω
R3
700Ω
R
FREQ
31.6kΩ
1%
C
OUT2
330µF
25V
×2
V
OUT
= 12V
1A
D1
D2
C3
1µF
10V
C4
0.1µF
10V
C2
220pF
R
COMP
51.5kΩ
V
IN
= 3.3V
06090-033
Figure 34. Bootstrapped Application Circuit for V
OUT
> 5.5 V
ADP1621
IN
GATE
PGND
AGND
FB
SDSN
COMP
FREQ
GND
PIN
CS
R1
88.7kΩ
1%
R2
10kΩ
1%
C1
47µF
6.3V
L1
10µH
M1
C
COMP
330pF
C
OUT1
10µF
16V
×2
f
OSC
= 600kHz
C1 = MURATA GRM31CR60J476M
C
OUT2
= RUBYCON 25ZL330M8x16
L1 = COILCRAFT MSS1260-103ML
Q1 = SIGNAL NPN TRANSISTOR
M1 = IRF7470
D1 = VISHAY SSC53L
D2, D3 = SIGNAL DIODE
R
S
200Ω
R3
1.5kΩ
R
FREQ
31.6kΩ
1%
C
OUT2
330µF
25V
×2
V
OUT
= 12V
1A
D1
D2
Q1
C3
1µF
10V
C4
0.1µF
10V
C2
220pF
R
COMP
51.5kΩ
D3
V
IN
= 3.3V
06090-034
Figure 35. Bootstrapped Application Circuit for V
OUT
> 5.5 V