LTC3723-2 Linear Technology, LTC3723-2 Datasheet - Page 20

• Manufacturer Part Number: LTC3723-2
• Description: Synchronous Push-Pull PWM Controllers
• Manufacturer: Linear Technology

RELATED PARTS
LTC3723-1/LTC3723-2
TYPICAL APPLICATIO
PART NUMBER
LT
LTC3705/LTC3706/
LTC3725/LTC3726/
LTC3722-1/LTC3722-2 Dual Mode Phase Modulated Full-Bridge Controllers
LT3804
LTC3901
LT4430
LTC4440
PolyPhase is a registered trademark of Linear Technology Corporation. ThinSOT is a trademark of Linear Technology Corporation.
20
–V
66.5k
383k
®
V
IN
IN
1952
90
89
88
87
100V
94
93
92
91
86
V
1µF
IN
A
5
48V
30k
IN
50k
150Ω
1/4W
100pF
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
0.33µH
10
L1
10V
LOAD CURRENT (A)
V
15
REF
5
1µF
MMBT2369
15
8.66k
V
UVLO
GND SS
C
1µF
100V
×2
CC
T
DRVA
7
A
DESCRIPTION
Single Switch Synchronous Forward Controller
Isolated Power Supply DC/DC Converter Chipset
Secondary-Side Dual Output Controller with Opto Driver
Secondary-Side Synchronous Driver for Push-Pull and
Full Bridge Converters
Secondary-Side Optocoupler Driver
High Speed High Voltage High Side Gate Driver
V
20
IN
6
14
●
68nF
FAX: [phone]
C
T
25
C
T
8
1µF, 100V TDK C3225X7R2A105M (1210)
100µF, 6.3V TDK C3225X5R0J107M (1210)
2.2nF, 630V TDK C3216JB2J222K
470µF, 6.3V SANYO 6TPD470M
D1: MMBZ5240B
L1: COILCRAFT DO1813P-331HC
L2: PULSE PA1292.910
L3: COILCRAFT DO1608C-105
T1: PULSE PA810.007 (7:6:6:1:1:1T)
T2: PULSE PA0184 (1:1T)
LTC3723-1 100W, 36V
220pF
10k
30
LTC3723EGN-1
SPRG
DRVB
16
33k
RLEB
4
U
12
FB
120pF
820Ω
13
●
Si7450DP
DPRG
www.linear.com
0.47µF
CS
9
150k
10
V
V
REF
68µF
REF
20V
0.03Ω
1W
120K
1
V
IN
COMP
REF
SDRB
+
10V
4.7nF
to 72V
1mH
2
11
L3
2.2nF
630V
V
23.4mm × 20.1mm × 9.4mm PLANAR
IN
REF
820Ω
BAS21
to 3.3V/30A Isolated Forward Converter
BAS21
6
220pF
V
2
4
3
5
1
6
IN
T1
5
MOC207
2.2nF
250V
2.2nF
COMMENTS
High Efficiency, Adjustable Volt-Second Clamp, True PWM Soft-Start
Simple as Buck Circuit, No Opto-Coupler, Fast Transient Response,
PolyPhase
ZVS Full-Bridge Controllers
Regulates Two Secondary Outputs; Optocoupler Feedback Driver and
Second Output Synchronous Driver Controller
Drives N-Channel Synchronous MOSFETs, Programmable Timeout,
Reverse Current Limit
Overshoot Control on Start-Up and Short-Circuit Recovery,
600mV Reference, ThinSOT™ Package
80V Operation, 100V Tolerant, 1.5Ω Pull-Down, 2.4A Pull-Up
7
8
10
11
1/2W
5.1Ω
1
8
T2
1
2
330Ω
10nF
4
5
®
V
560Ω
X
Operation Capability, Scalable for Higher Power
Si7336ADP
×2
8
5
6
2.2nF
SYNC
1/2W
5.1Ω
FG
4.7nF
COMP
OPTO
5
LT4430ES6
CS
GND
+
1
V
845Ω
V
1.00k
IN
LTC3900ES8
B
1
2
GND
330Ω
Si7336ADP
×2
CS
6
OC
© LINEAR TECHNOLOGY CORPORATION 2003
2
–
562Ω
3
FB
47nF
CG
4
3
www.DataSheet4U.com
TIMER
V
V
V
V
CC
OUT
X
B
100µF
4
B0540W
B0540W
27.4k
6.04k
6.3V
0.85µH
×2
L2
7
V
OUT
LT 1105 • PRINTED IN USA
1k
26.1k
+
470pF
1nF
1/4W
15Ω
–V
V
OUT
OUT
470µF
6.3V
372312 TA06
V
–V
D1
10V
OUT
OUT
–V
OUT
372312f
0.47µF
25V