LT1619 Linear Technology, LT1619 Datasheet - Page 20

• Manufacturer Part Number: LT1619
• Description: Low Voltage Current Mode PWM Controller
• Manufacturer: Linear Technology

TYPICAL APPLICATIO
LT1619
RELATED PARTS
PART NUMBER
LT1370
LT1372
LT1613
LTC1624
LT1680
LT1698
LTC1871
LTC1872
LT1946
LT3710/LT3781 Isolated or Nonisolated 10W to 100W
20
4V TO 28V
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone] FAX: [phone]
V
IN
DESCRIPTION
500kHz, 6A Switching Regulator
500kHz, 1.5A Switching Regulator
1.4MHz, SOT-23 DC/DC Converter
Switching Regulator Controller
Synchronous Boost Controller
Isolated or Nonisolated 10W to 100W
Power Supply Solution with Multiple Outputs
No R
SOT-23 Boost Controller
1.2MHz, 65A DC/DC Converter
Power Supply Solution with Multiple Outputs
SENSE
C4, C5: VITRAMON VJ1825Y155MXB (1825/X7R)
C6: TAIYO YUDEN LMK325BJ106MN (1210/X7R)
C8: TAIYO YUDEN EMK316BJ105ML (1206/X7R)
T1: COILTRONICS VP1-0190 (ER11/5, 6 WINDINGS EACH 12.2 H)
Boost, Flyback, SEPIC Controller
(I
LOW LEVEL
C4
1.5 F
100V
ZT
= 50 A)
1N4687
4.3V
D4
Figure 19. 2.5W, 4V
U
R3
5.6k
Q1
FMMT3904
www.linear.com
C8
1 F
16V
V
S/S
IN
8
1
LT1619
GND V
DRV
7
4
SENSE
D3
MBRS0530T1
GATE
IN
C
FB
6
3
-28V
R9
2.2k
C9
2.2nF
5
2
IN
to 5V/0.5A Nonisolated Supply
C7
220pF
COMMENTS
Boost, Buck, Flyback, Forward, Inverting; 42V Switch Voltage
SO-8, 2.7V V
Fixed Frequency, 0.9V V
SO-8, Drives N-Ch MOSFET, 3.5V V
Synchronous Operation for High Current/High Efficiency
50% Lower Cost than Quarter Brick and Half Brick Modules
Fits the Foot Print
2.5V V
Adjustabe Frequency, MSOP-10
550kHz Fixed Frequency, Current Mode
MSOP-8, 5V to 12V/400mA
50% Lower Cost than Quarter Brick and Half Brick Modules
Fits the Foot Print
30
R7
IN
Q3
MMFT3055VL
R8
0.015
36V, Current Mode Control, 50kHz to 1MHz
10
7
2
5
3
6
1.5 F
IN
100V
3.74k
•
•
•
C5
T1
1%
R6
30V, 42V Switch Voltage
•
•
•
9
12
1
4
8
11
R10
1.24k
1%
IN
MBRS340T3
R5
100
10V, 36V Switch Voltage
C1
0.022 F
D2
LINEAR TECHNOLOGY CORPORATION 2000
LT/TP 1002 1K REV A • PRINTED IN USA
IN
1619 TA01
C6
10 F
10V
36V
V
5V
0.5A
OUT
1619fa