CS5171, CS5172, CS5173, CS5174

http://onsemi.com

2

+

1

2

3

45

6

7

8

L1

5 V

C3

22

mF

FB

Test

SS

AGND

PGND

+

MBRS120T3

D1

22

mH

C2

22

mF

R3

1.28 k

3.72 k

R2

C1

SS

3.3 V

R1

5 k

0.01

mF

Figure 1. Applications Diagram

MAXIMUM RATINGS

Rating

Value

Unit

−40 to +150

°C

−65 to +150

°C

45

165

°C/W

°C/W

Lead Temperature Soldering: Reflow (Note 1)

230 Peak

°C

ESD, Human Body Model

1.2

kV

Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the

Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect

device reliability.

1. 60 second maximum above 183

°C.

MAXIMUM RATINGS

Pin Name

Pin Symbol

IC Power Input

35 V

−0.3 V

N/A

200 mA

Shutdown/Sync

SS

30 V

−0.3 V

1.0 mA

1.0 mA

Loop Compensation

6.0 V

−0.3 V

10 mA

10 mA

Voltage Feedback Input

FB

(CS5171/3 only)

10 V

−0.3 V

1.0 mA

1.0 mA

Negative Feedback Input

(transient, 10 ms)

NFB

(CS5172/4 only)

−10 V

10 V

1.0 mA

1.0 mA

Test Pin

Test

6.0 V

−0.3 V

1.0 mA

1.0 mA

Power Ground

PGND

0.3 V

−0.3 V

4 A

10 mA

Analog Ground

AGND

0 V

0 V

N/A

10 mA

Switch Input

40 V

−0.3 V

10 mA

3.0 A