LTC4440A-5
12
4440a5f
For more information www.linear.com/LTC4440A-5
LINEAR TECHNOLOGY CORPORATION 2013
LT 0913 • PRINTED IN USA
relaTeD parTs
Typical applicaTion
240W 42V-56V
IN
to Unregulated 12V Half-Bridge Converter
5
46
A
B
11V12VV
IN
MMBT3904
15
LTC3723EGN-2
DRVB
SDRB
SDRA
COMP
V
CC
UVLO
12
62k
330pF
12V
150pF
1
0.47µF
1µF
DRVA
DPRG V
REF
RAMP SPRG GND SSCS FBC
T
470pF
0.47µF
4.7k
0.22µF
2N7002
B
CS
+
T3
1(1.5mH):0.5
T1
5:4:4:2:2
1µF
89 13
1k
22Ω
0.1µF
C1
2.2nF
250V
1µF
100V
1µF
100V
1µF
100V
1µF
100V
0.22µF
Si7370DP
×2
Si7852DP
×2
1
6
5
42
3
A
Si7370DP
×2
1500pF
100V
L2 0.22µH
L3
1mH
C3
68µF
V
F
•
•
11
3
2
8
1 9
5
4
16
10k
120Ω
7 10 14
7.5Ω
D4 D5
7.5Ω
220pF
100Ω
10k 3k
4.7k
1/4W
100pF
215k
15k
1/4W
SYNC PV
CC
CSF
+
V
F
LTC3901EGN
CSF
–
8
11 12
1
4 10 13 7
1µF
1µF
4440A5 TA04
–V
OUT
10V
1k
V
OUT
MF MF2
GND PGND GND2 PGND2 TIMER
V
CC
330pF
14 15
10k 3k
33.2k 100Ω
4.7k
1/4W
CSE
+
V
E
20Ω 1W
–V
OUT
V
OUT
V
OUT
–V
OUT
CSE
–
6 5
ME ME2
2 3 16
MMBT3904
Si7852DP
×2
0.56µH
72
4
CS
+
T2
70(980µH):1
8
7
1
3
12V
D2
D1
D3
3
5
1
6
•
••
•
•
•
•
9
11
V
E
+
LTC4440A-5
BOOSTINP
TG
TSGND
V
CC
11V
1µF
100V
V
IN
V
IN
–V
IN
48V
IN
1µF
100V
C2
180µF
16V
+
1µF
1µF, 100V TDK C4532X7R2A105M
C1: MURATA DE2E3KH222MB3B
C2: SANYO 16SP180M
C3: AVX TPSE686M020R0150
D1-D3: BAS21
D4, D5: MMBD914
L1: COILCRAFT DO1813P-561HC
L2: SUMIDA CDEP105-0R2NC-50
L3: COILCRAFT DO1608C-105
T1: PULSE PA0801.005
T2: PULSE P8207
T3: PULSE PA0785
PART NUMBER DESCRIPTION COMMENTS
LTC4444/LTC4444-5 High Voltage Synchronous N-Channel MOSFET Driver with
Shoot-Through Protection
Up to 100V Supply Voltage, 7.2V ≤ V
CC
≤ 13.5V, 3A Peak
Pull-Up/0.55Ω Peak Pull-Down
LTC4446 High V
oltage 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
LTC4441/L
TC4441-1 N-Channel MOSFET Gate Driver Up to 25V Supply Voltage, 5V ≤ V
CC
≤ 25V, 6A Peak Output Current
LTC3900 Synchronous Rectifier Driver for Forward Converters Programmable Time Out, Reverse Inductor Current Sense
LTC3901 Synchronous Rectifier Driver for Push-Pull and Full-Bridge
Converters
Programmable Time Out, Reverse Inductor Current Sense
LTC3722-1/LTC3722-2 Synchronous Dual Mode Phase Modulated Full-Bridge
Controllers
Adaptive Zero Voltage Switching, High Output Power Levels (Up to
Kilowatts)
LTC3723-1/LTC3723-2 Synchronous Push-Pull PWM Controllers Current Mode or Voltage Mode Controllers
LTC3765/LTC3766 Isolated Synchronous Forward Controller Chip Set Active Clamp Reset, Direct Flux Limit™ with Onboard Gate Drivers
Ideal for Medium Power 24V and 48V Input Applications
LT1952/LT1952-1 Synchronous Forward Active Clamp Controllers Ideal for Medium Power 24V and 48V Input Applications
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC4440A-5