LTC4440-5
14
44405fb
For more information www.linear.com/LTC4440-5
LINEAR TECHNOLOGY CORPORATION 2005
LT 1013 REV B • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC4440-5
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
4440 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
+
LTC4440-5ES6
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
LT
®
1161 Quad Protected High Side MOSFET Driver 8V to 48V Supply Range, t
ON
= 200µs, t
OFF
= 28µs
LTC1693 Family High Speed Dual MOSFET Drivers 1.5A Peak Output Current, 4.5V ≤ V
IN
≤ 13.2V
LT1952 Single Switch Synchronous Forward Controller 25W to 500W DC/DC Controller
LT3010/LT3010-5 50mA, 3V to 80V Low Dropout Micropower Regulators Low Quiescent Current (30µA), Stable with Small (1µF) Ceramic Capacitor
LT3430 High Voltage, 3A, 200kHz Step-Down Switching Regulator Input Voltages Up to 60V, Internal 0.1Ω Power Switch, Current Mode
Architecture, 16-Pin Exposed Pad TSSOP Package
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/
L
TC3723-2
Synchronous Push-Pull PWM Controllers Current Mode or Voltage Mode Push-Pull Controllers
LTC3900 Synchronous Rectifier Driver for Forward Converters Programmable Time Out, Reverse Inductor Current Sense
LTC3901 Secondary Side Synchronous Driver for Push-Pull and
Full-Bridge Converters
Programmable Time Out, Reverse Inductor Current Sense
LTC4440 High Speed, High Voltage, High Side Gate Driver High Side Source up to 100V, 8V to 15V Gate Drive Supply,
Undervoltage Lockout, 6-Lead ThinSOT or 8-Lead Exposed MSOP Package
LTC4441 6A MOSFET Driver Adjustable Gate Drive from 5V to 8V
, 5V ≤ V
IN
≤ 28V
