Datasheet

18
LTC1266
LTC1266 -3.3/LTC1266 -5
(Layout Assist Schematics)
Figure 13. All N-Channel 5V to 3.3V/5A Converter with Drivers Powered from External PWR V
IN
Supply
Figure 12. 5V to 12V/500mA High Efficiency Boost Regulator
V
OUT
12V/500mA
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TDRIVE
PWR V
IN
PINV
BINH
V
IN
C
T
I
TH
SENSE
–
BDRIVE
PGND
LB
OUT
LB
IN
SGND
SHDN
V
FB
SENSE
+
LTC1266
1000pF
BINH
Si9410DY
+
C
0UT
100µF
20V
C
C
3300pF
R
C
1k
C
T
200pF
1266 F12
DALE LPT4545-A002
COILTRONICS CTX20-4
MMBT2222ALT1
*
**
0.1µF
C
IN
100µF
20V
1M
1M
15k
1%
180k
100k
1N4148
SHUTDOWN
D1
MBRS130LT3
100pF
0.068Ω
L*
20µH
127k
1%
V
IN
4.3V TO 10V
(V
IN (MIN)
= 3.5V IF I
LOAD
< 100mA
+
Q1**
V
IN
4V TO PWR V
IN
– 4.5V
(V
IN(MIN)
= 3.5V IF I
LOAD
< 2.5A)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
TDRIVE
PWR V
IN
PINV
BINH
V
IN
C
T
I
TH
SENSE
–
BDRIVE
PGND
LB
OUT
LB
IN
SGND
SHDN
NC
SENSE
+
LTC1266-3.3
1µF
1000pF
SHUTDOWN
BINH
R
SENSE
0.02Ω
L*
5µH
Si9410DY
D1
MBRS140T3
Si9410DY
+
C
IN
100µF
20V
2 ×
+
C
OUT
220µF
10V
2 ×
V
OUT
3.3V
5A
C
C
3300pF
R
C
470Ω
C
T
180pF
1266 F13
*TOKO 919AS-4R7M
PWR V
IN
V
IN
+ 4.5V TO 18V
+
TYPICAL APPLICATIO S
U