7

LT1944

TYPICAL APPLICATIO S

SW1

FB2

LT1944

4

3

L1

4.7

µH

D1

SHDN2

324k

1M

C2

10

µF

5V

40mA

3.3V

80mA

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

4.7

µF

FB1

2

5

1

SHDN1

L2

4.7

µH

D2

1M

604k

4.7pF

C3

10

µF

2-Cell Dual Output (3.3V, 5V) Boost Converter

LOAD CURRENT (mA)

0.1

110

100

1944 TA02a

90

85

80

75

70

65

60

55

50

LOAD CURRENT (mA)

0.1

1

10

100

1944 TA02b

90

85

80

75

70

65

60

55

50

2-Cell to 5V Efficiency

2-Cell to 3.3V Efficiency

PACKAGE DESCRIPTIO

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)

8

9

10

7 6

0.118

± 0.004*

(3.00

± 0.102)

0.118

± 0.004**

(3.00

± 0.102)