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LT1944EMS#TRPBF

P1-P3P4-P6P7-P8
7
LT1944
TYPICAL APPLICATIO S
U
V
IN
SW1
FB2
LT1944
4
3
L1
4.7µH
D1
SHDN2
324k
1M
C2
10µF
5V
40mA
3.3V
80mA
V
IN
1.8V
TO 3V
C1: TAIYO YUDEN JMK212BJ475
C2, C3: TAIYO YUDEN JMK316BJ106
D1, D2: ON SEMI MBR0520
L1, L2: MURATA LQH3C4R7
(408) 573-4150
(408) 573-4150
(800) 282-9855
(814) 237-1431
1944 TA02
GND
7
PGND
9
PGND
6
810
SW2
4.7pF
C1
4.7µF
FB1
2
5
1
SHDN1
L2
4.7µH
D2
1M
604k
4.7pF
C3
10µF
2-Cell Dual Output (3.3V, 5V) Boost Converter
LOAD CURRENT (mA)
0.1
EFFICIENCY (%)
110100
1944 TA02a
90
85
80
75
70
65
60
55
50
V
IN
= 3V
V
IN
= 1.8V
LOAD CURRENT (mA)
0.1
EFFICIENCY (%)
1 10 100
1944 TA02b
90
85
80
75
70
65
60
55
50
V
IN
= 3V
V
IN
= 1.8V
2-Cell to 5V Efficiency 2-Cell to 3.3V Efficiency
PACKAGE DESCRIPTIO
U
MS10 Package
10-Lead Plastic MSOP
(LTC DWG # 05-08-1661)
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
MSOP (MS10) 1100
* DIMENSION DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. MOLD FLASH,
PROTRUSIONS OR GATE BURRS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
** DIMENSION DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS.
INTERLEAD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE
0.021
± 0.006
(0.53 ± 0.015)
0
° – 6° TYP
SEATING
PLANE
0.007
(0.18)
0.043
(1.10)
MAX
0.007 – 0.011
(0.17 – 0.27)
0.005
± 0.002
(0.13 ± 0.05)
0.034
(0.86)
REF
0.0197
(0.50)
BSC
12
3
45
0.193 ± 0.006
(4.90 ± 0.15)
8910
7
6
0.118 ± 0.004*
(3.00 ± 0.102)
0.118 ± 0.004**
(3.00 ± 0.102)
8
LT1944
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
(408) 432-1900
●
FAX: (408) 434-0507
●
www.linear.com
LINEAR TECHNOLOGY CORPORATION 2001
1944f LT/TP 1001 2K • PRINTED IN USA
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®
Operation DC/DC with Programmable Current Limit 1.5V Minimum, Precise Control of Peak Current Limit
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LT1611 1.4MHz Inverting Switching Regulator in 5-Lead SOT-23 –5V at 150mA from 5V Input, Tiny SOT-23 Package
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Burst Mode is a registered trademark of Linear Technology Corporation
V
IN
SW1
FB2
LT1944
4
3
L1
10µH
D1
D2B
D2A
SHDN2
140k
1M
C2
2.2µF
10V
5mA
20V
500µA
–6.5V
500µA
15mA
V
IN
2.7V
TO 4.2V
1944 TA03
GND
7
PGND
9
PGND
6
810
SW2
C8
1µF
C1
4.7µF
FB1
2
5
1
SHDN1
L2
10µH
D4
5 WHITE LEDs
82.5Ω
C4
0.1µF
C3
0.1µF
C6
2.2µF
C7
0.1µF
C1: TAIYO YUDEN JMK212BJ475
C2, C6: TAIYO YUDEN LMK212BJ225
C3, C4, C7: TAIYO YUDEN EMK107BJ104
C5, C8: TAIYO YUDEN TMK316BJ105
D1, D4: ON SEMI MBR0530
D2, D3: ZETEX BAT54S
L1, L2: SUMIDA CLQ4D10-100
Q1, Q2: ON SEMI MMBT3906
(408) 573-4150
(408) 573-4150
(408) 573-4150
(408) 573-4150
(800) 282-9855
(631) 543-7100
(847) 956-0666
(800) 282-9855
D3B
D3A
C5
1µF
140k
Q2
Q1
Four Output Power Supply for Color LCD Displays
U
TYPICAL APPLICATIO
P1-P3P4-P6P7-P8

LT1944EMS#TRPBF

Mfr. #:
Buy LT1944EMS#TRPBF
Manufacturer:
Analog Devices / Linear Technology
Description:
Switching Voltage Regulators 2x uP Boost DC/DC Conv
Lifecycle:
New from this manufacturer.
Delivery:
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