LTC3721EGN-1#TRPBF Linear Technology, LTC3721EGN-1#TRPBF Datasheet - Page 16

• Manufacturer Part Number: LTC3721EGN-1#TRPBF
• Description: IC CTRLR PWM PUSH PULL HE 16SSOP
• Manufacturer: Linear Technology

Specifications of LTC3721EGN-1#TRPBF

• Pwm Type: Current Mode
• Number Of Outputs: 1
• Frequency - Max: 1MHz
• Duty Cycle: 50%
• Buck: No
• Boost: No
• Flyback: No
• Inverting: No
• Doubler: No
• Divider: No
• Cuk: No
• Isolated: Yes
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 16-SSOP
• Frequency-max: 1MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Supply: -

RELATED PARTS
LTC3721-1
TYPICAL APPLICATIO
PART NUMBER
LT1431
LT1681/LT3781
LTC1693-1
LT1950
LTC3722-1/LTC3722-2 Dual Mode Phase Modulated Full-Bridge Controllers
LT3804
LTC3901
LTC3723-1/LTC3723-2 Synchronous Push-Pull Controllers
LTC4440
16
V
IN
1nF
107k
100k
470Ω
470Ω
12V
MMBT3904LT1
9.1V
+V
–V
D1
IN
IN
IN
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
FMMT718
C2, C3, C4, C5
4x33µF
16V
270pF
15
5
1µF
V
UVLO
CC
DRVA
6
8
DESCRIPTION
Reference and Opto-Driver
Synchronous Forward Controllers
Dual MOSFET Gate Drivers
Single Switch Forward Converter Controller
Secondary Side Dual Output Controller with Opto Driver
Secondary Side Synchronous Driver for Push-Pull
and Full Bridge Converters
100V High Side MOSFET Driver
V
C
IN
T
4.7Ω
1/4W
●
12
R
5V
FAX: [phone]
LEB
73.2k
330pF
33k
5.1Ω
1/2W
10
LTC3721EGN-1
1nF
200V
GND
7
CS
2xSi7370DP
1.21k
FMMT718
13
FB
14
SS
U
DRVB
DPRG
4
9
68nF
COEV MGPWG-00001
EFD25 (1.28" x 1" x 0.504")
4T (42µH) CT: 10T CT: 10T CT
(PINS 1 TO 6, 7 TO 9, 11 TO 12)
●
4.7Ω
1/4W
10k
www.linear.com
R1
0.01Ω
1.5W
COMP
V
1
REF
5.1Ω
1/2W
1µF
1nF
200V
1.2k
2xSi7370DP
11
R2
0.01Ω
1.5W
1.5nF
6
5
4
1
3
6
MOC207
2.2nF
250V
•
C10
•
•
•
•
1
2
12
11
10
9
8
7
100k
1k
160Ω
2W
MBRB20200CT
MBRB20200CT
D2
9.1V
COMMENTS
Drives Opto-Coupler
High Efficiency 2-Switch Forward Control
High Speed MOSFET Gate Drivers
Auxillary Boost Converter, Programmable Volt-SPC Clamp
ZVS Full-Bridge Controllers
Regulates Two Secondary Outputs; Optocoupler Feedback Driver and
Second Output Synchronous Driver Controller
Fault Timer, Reverse Current Sense, SO8
Highest Efficiency Push-Pull Controllers
SOT-23 and MSOP; 1.6Ω Pull-Down, 2.4A Pull-Up
1
22µH
22µH
10nF
L1
L2
180pF
200V
GND-F
COLL
3
6
V
+
LT1431CS8
24V
GND-S RMID
COMP RTOP
1/4W
2
5
1.5k
2k
160Ω
2W
C64
180pF
200V
4
7
REF
24V
+
+
8
C6
56µF
35V
C7
56µF
35V
+V
–V
S
S
46.1k
2.49k
C8
0.1µF
100V
+V
–V
© LINEAR TECHNOLOGY CORPORATION 2004
92
91
90
89
88
S
S
1.0
10k
10.6V
4
1
1nF
100V
0.59mH
PULSE
P0353
1.5
IN
T2
LT/TP 0504 1K • PRINTED IN USA
NOTES:
T2, C1, C9 ARE OPTIONAL AND
REDUCE OUTPUT RIPPLE TO LESS
THAN 50mV
10mA MINIMUM LOAD REQUIRED.
START VOLTAGE 10.8V MAX.
C2-C5: TDK C4532X7R1336M (1812)
C10: MURATA DE2E3KH222MB3B
C1: TDK C3225X7R2A105M (1210)
C6, C7: SANYO 35MV56WX
C9: SANYO 100MV39AX
C8: TDK C3216X7R2A104M (X7R 1206)
D1, D2: MMBZ5239B
R1, R2: IRC LRC-LR2512-01-R010-G
L1, L2: TDK SLF12575T-220M4R0
LOAD CURRENT (A)
2.0
3
2
12V
+
IN
13.2V
2.5
P-P
100V
1µF
C9
39µF
100V
.
C1
IN
3.0
sn37211 37211fs
3.5
+V
48V/3.65A
–V
OUT
OUT
37211 TA02
4.0