Datasheet
LTC4440
14
4440fa
For more information www.linear.com/LTC4440
LINEAR TECHNOLOGY CORPORATION 2003
LT 1013 REV A • PRINTED IN USA
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com/LTC4440
relaTeD parTs
Typical applicaTion
PART NUMBER DESCRIPTION COMMENTS
LTC1155 Dual Micropower High/Low Side Drivers with
Internal Charge Pump
4.5V to 18V Supply Range
LT
®
1161 Quad Protected High Side MOSFET Driver 8V to 48V Supply Range, t
ON
= 200µs, t
OFF
= 28µs
LTC1163 Triple 1.8V to 6V High Side MOSFET Driver 1.8V to 6V Supply Range, t
ON
= 95µs, t
OFF
= 45µs
LT1339 High Power Synchronous DC/DC Controller Current Mode Operation Up to 60V, Dual N-Channel Synchronous Drive
LTC1535 Isolated RS485 Transceiver 2500V
RMS
of Isolation Between Line Transceiver and Logic Level Interface
LTC1693 Family High Speed Dual MOSFET Drivers 1.5A Peak Output Current, 4.5V ≤ V
IN
≤ 13.2V
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
LTC4441 6A MOSFET Driver Adjustable Gate Drive from 5V to 8V, 5V ≤ V
IN
≤ 28V
LTC3723-2/LTC4440/LTC3901 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
MMBZ5242B
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
30.1k
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
MMBZ5240B
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
L1
0.56µH
72
4
CS
+
T2
70(980H):1
8
7
1
3
12V
D2
D1
D3
3
5
1
6
•
••
•
•
•
•
9
11
V
E
+
LTC4440ES6
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