Datasheet

16
LTC1159
LTC1159-3.3/LTC1159-5
Figure 10. High Efficiency 8V to 20V Input 2.5/5A Output Regulator
4
3
21
P-GATE
V
IN
V
CC
P-DRIVE
V
CC
C
T
I
TH
SENSE
–
CAP
SHDN2
EXTV
CC
N-GATE
PGND
SGND
V
FB
SENSE
+
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1159
0.15µF
SHUTDOWN
0.1µF
1N4148
1N4148
1000pF
2k 10k
10k
1%
0.047µF
3.3µF
1000pF
100pF
100Ω
100Ω
IRF7201IRF7201 MBRS330
1µF
WIMA
47µF
25V × 2
OS-CON
V
IN
8V TO 20V5V
L*
15µH
R
SENSE
**
0.02Ω
330µF
6.3V × 3
AVX
LTC1159 • F10
V
OUT
2.5V/5A
*MAGNETICS 77120-A7 CORE, 16T 18GA. WIRE
**KRL SL-1-R020J
IRF7205
10k
1%
+
+
+
Figure 11. 5:1 Input Range (4V to 20V) High Efficiency 3.3V/2.5A Regulator
4
3
21
P-GATE
V
IN
V
CC
P-DRIVE
V
CC
C
T
I
TH
SENSE
–
CAP
SHDN2
EXTV
CC
N-GATE
PGND
SGND
SHDN1
SENSE
+
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
LTC1159-3.3
0.15µF
0.1µF
1N4148 1N4148
270pF
1k
3300pF
1µF
0.01µF
1µF
SHUTDOWN
Si9410DY MBRS130LT3
0.1µF
47µF
25V
OS-CON
V
IN
4V TO 20V
L*
20µH
R
SENSE
**
0.04Ω
330µF
6.3V × 2
AVX
LTC1159 • F11
V
OUT
3.3V/2.5A
*COILTRONICS CTX20-4
**KRL SL-1/2-R040J
Si9435DY
VN2222LL
BAT85
BAT85
BAT85
0.22µF
+
+
+
+
TYPICAL APPLICATIO S
U