15

LTC1643AL

LTC1643AL-1/LTC1643AH

1643afa

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.

Figure 9. System Without 3.3V Supply

Q1

IRF7413

R1

0.007

Ω

R6

10

Ω

R7

100

Ω

C1

0.047

µF

5V

5A

GND

–12V

100mA

12V

500mA

R3

10k

R4

10k

11

13

12

14

3

16

15

4

10

9

8

1

2

5

6

7

GND

ON

FAULT

PWRGD

LTC1643AH

TIMER

GATE

1643A G09

SYSTEM

POWER

SUPPLY

PCI

POWER

SYSTEM

CONTROLLER

C2

0.1

µF

4

3

2

1

GN Package

16-Lead Plastic SSOP (Narrow .150 Inch)

(Reference LTC DWG # 05-08-1641)

GN16 (SSOP) 0502

12

3

4

5

6

7

8

.229 – .244

(5.817 – 6.198)

.150 – .157**

(3.810 – 3.988)

16 15 14 13

.189 – .196*

(4.801 – 4.978)

12 11 10 9

.016 – .050

(0.406 – 1.270)

.015

± .004

(0.38

± 0.10)

× 45°

0

° – 8° TYP

.007 – .0098

(0.178 – 0.249)

.053 – .068

(1.351 – 1.727)

.008 – .012

(0.203 – 0.305)

.004 – .0098

(0.102 – 0.249)

.0250

(0.635)

BSC

.009

(0.229)

REF

.254 MIN

RECOMMENDED SOLDER PAD LAYOUT

.150 – .165

.0250 TYP

.0165

±.0015

.045

±.005

*DIMENSION DOES NOT INCLUDE MOLD FLASH. MOLD FLASH

SHALL NOT EXCEED 0.006" (0.152mm) PER SIDE

**DIMENSION DOES NOT INCLUDE INTERLEAD FLASH. INTERLEAD

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

INCHES

(MILLIMETERS)

NOTE:

1. CONTROLLING DIMENSION: INCHES

2. DIMENSIONS ARE IN

3. DRAWING NOT TO SCALE