LTC4444
14
4444fb
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
© LINEAR TECHNOLOGY CORPORATION 2007
LT 0111 REV B • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
LTC3780 High Efficiency 8V to 80V V
IN
to 12V/5A Buck-Boost DC/DC Converter
PART NUMBER DESCRIPTION COMMENTS
LTC4446 High Voltage Synchronous N-Channel MOSFET
Driver without Shoot-Through Protection
Up to 100V Supply Voltage, 7.2V ≤ V
CC
≤ 13.5V, 3A Peak Pull-Up/
0.55Ω Peak Pull-Down
LTC4440/LTC4440-5 High Speed, High Voltage, High Side Gate Driver Up to 80V Supply Voltage, 8V ≤ V
CC
≤ 15V, 2.4A Peak Pull-Up/
1.5Ω Peak Pull-Down
LTC4442 High Speed Synchronous N-Channel MOSFET Driver Up to 38V Supply Voltage, 6V ≤ V
CC
≤ 9.5V, 3.2A Peak Pull-Up/
4.5A Peak Pull-Down
LTC4449 High Speed Synchronous N-Channel MOSFET Driver Up to 38V Supply Voltage, 4.5V ≤ V
CC
≤ 6.5V, 3.2A Peak Pull-Up/
4.5A Peak Pull-Down
LTC4441/LTC4441-1 N-Channel MOSFET Gate Driver Up to 25V Supply Voltage, 5V ≤ V
CC
≤ 25V, 6A Peak Output Current
LTC1154 High Side Micropower MOSFET Driver Up to 18V Supply Voltage, 85µA Quiescent Current, H-Grade Available
PGOOD
SS
SENSE
+
SENSE
–
I
TH
V
OSENSE
SGND
RUN
FCB
PLLFLTR
PLLIN
STBYMD
BOOST1
TG1
SW1
V
IN
EXTV
CC
INTV
CC
BG1
PGND
BG2
SW2
TG2
BOOST2
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
LTC3780EG
10k
100
20k
100
V
OS
+
150k
113k
1%
8.06k
1%
0.01µF
47pF
V
IN
D4
0.1µF
100pF
68pF
0.1µF
0.1µF
2.2µF, 100V, TDK C4532X7R2A225MT
100µF, 100V SANYO 100ME 100AX
C1: SANYO 16ME330WF
D1: DIODES INC. BAV19WS
D2: DIODES INC. 1N5819HW-7-F
D3: DIODES INC. B320A-13-F
D4: DIODES INC. MMBZ5230B-7-F
D5: DIODES INC. B1100-13-F
L1: SUMIDA CDEP147-8R0
0.1µF
16V
6V
10µF
10V
TG1
SW1
1µF
16V
0.22µF
16V
0.22µF
16V
L1 8µH
2.2µF
100V
s5
100µF
100V
s2
V
IN
8V TO 80V
1µF
16V
0.1µF
16V
V
BIAS
12V
V
BIAS
12V
D1
SENSE
+
SENSE
–
6V
D2
6V
1
2
4
TG1
6
7
8
9
3
V
CC
GND
TG
BOOST
TINP
BINP
LTC4444
TSBG
+
22µF
16V
s3
C1
330µF
s2
V
OUT
12V, 5A
10
V
OS
+
+
4444 TA03
D5
SENSE
+
SENSE
–
D3
SW1
0.005
1W
10
10
