19

LTC1553L

G Package

20-Lead Plastic SSOP (0.209)

(LTC DWG # 05-08-1640)

Dimension in inches (millimeters) unless otherwise noted.

Figure 11. Single Supply LTC1553L 5V to 1.8V-3.5V Application with Thermal Monitor

PWRGD

FAULT

OT

VID0 TO VID4

OUTEN

COMP

SS

SGND

SENSE

Q1*

Q2*

5V

2

µH

18A

LTC1553L

G1

G2

0.1

µF

5V

1.8k

1553L F11

0.01

µF

8.2k

5.6k

5.6k

5.6k

0.1

µF

0.1

µF

0.1

µF

20

Ω

1N5817

10

µF

GND

2.7k

1200

µF

× 4

330

µF

× 7

+

+

C1

150pF

+

5

PENTIUM II

SYSTEM

DALE

NTHS-1206N02

MOUNT THERMISTER

IN CLOSE THERMAL

PROXIMITY TO Q1

*SILICONIX SUD50N03-10

**SANYO 10MV1200GX

PANASONIC 12TS-2R5SP

G20 SSOP 0595

0.005 – 0.009

(0.13 – 0.22)

0

° – 8°

0.022 – 0.037

(0.55 – 0.95)

0.205 – 0.212**

(5.20 – 5.38)

0.301 – 0.311

(7.65 – 7.90)

12 3

4

5

6 7 89 10

0.278 – 0.289*

(7.07 – 7.33)

17

18

14 13 12 11

15

16

19

20

0.068 – 0.078

(1.73 – 1.99)

0.002 – 0.008

(0.05 – 0.21)

0.0256

(0.65)

BSC

0.010 – 0.015

(0.25 – 0.38)

DIMENSIONS DO NOT INCLUDE MOLD FLASH. MOLD FLASH

SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

DIMENSIONS DO NOT INCLUDE INTERLEAD FLASH. INTERLEAD

FLASH SHALL NOT EXCEED 0.010" (0.254mm) PER SIDE

*

**

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.