Datasheet

20
LT1619
1619fa
LT/TP 1002 1K REV A • PRINTED IN USA
 LINEAR TECHNOLOGY CORPORATION 2000
PART NUMBER DESCRIPTION COMMENTS
LT1370 500kHz, 6A Switching Regulator Boost, Buck, Flyback, Forward, Inverting; 42V Switch Voltage
LT1372 500kHz, 1.5A Switching Regulator SO-8, 2.7V ≤ V
IN
≤ 30V, 42V Switch Voltage
LT1613 1.4MHz, SOT-23 DC/DC Converter Fixed Frequency, 0.9V ≤ V
IN
≤ 10V, 36V Switch Voltage
LTC1624 Switching Regulator Controller SO-8, Drives N-Ch MOSFET, 3.5V ≤ V
IN
≤ 36V
LT1680 Synchronous Boost Controller Synchronous Operation for High Current/High Efficiency
LT1698 Isolated or Nonisolated 10W to 100W 50% Lower Cost than Quarter Brick and Half Brick Modules
Power Supply Solution with Multiple Outputs Fits the Foot Print
LTC1871 No R
SENSE
Boost, Flyback, SEPIC Controller 2.5V ≤ V
IN
≤ 36V, Current Mode Control, 50kHz to 1MHz
Adjustabe Frequency, MSOP-10
LTC1872 SOT-23 Boost Controller 550kHz Fixed Frequency, Current Mode
LT1946 1.2MHz, 65A DC/DC Converter MSOP-8, 5V to 12V/400mA
LT3710/LT3781 Isolated or Nonisolated 10W to 100W 50% Lower Cost than Quarter Brick and Half Brick Modules
Power Supply Solution with Multiple Outputs Fits the Foot Print
RELATED PARTS
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
TYPICAL APPLICATIO
U
V
IN
DRV
LT1619
GATE
SENSE
FB
S/S
14
R9
2.2k
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 12.2µH)
R7
30Ω
D3
MBRS0530T1
Q3
MMFT3055VL
D2
MBRS340T3
Q1
FMMT3904
D4
1N4687
4.3V
LOW LEVEL
(I
ZT
= 50µA)
C9
2.2nF
C8
1µF
16V
C7
220pF
3
876
6
3
5
2
5
2
GND V
C
R8
0.015Ω
R10
1.24k
1%
R5
100Ω
R6
3.74k
1%
C1
0.022µF
C6
10µF
10V
V
OUT
5V
0.5A
1619 TA01
C5
1.5µF
100V
••
••
10
T1
7
11
8
4
1
12
9
••
C4
1.5µF
100V
V
IN
4V TO 28V
R3
5.6k
Figure 19. 2.5W, 4V
IN
-28V
IN
to 5V/0.5A Nonisolated Supply