Ap1533, Block diagram, Absolute maximum ratings – Diodes AP1533 User Manual

Page 3: Recommended operating conditions, Pwm control 1.8a step-down converter

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AP1533

PWM CONTROL 1.8A STEP-DOWN CONVERTER

AP1533 Rev. 4

3 of 9

JULY 2009

DS31192

www.diodes.com

©

Diodes Incorporated

Block Diagram


Oscillation

Circuit

Reference

Voltage Source

PWM-Switched
Control Circuit

+

-

V

SS

V

EN

EN

90uA

OCSET

FB

V

CC

Thermal

Shutdown

Output


Absolute Maximum Ratings


Symbol

Parameter

Rating

Unit

ESD HBM Human Body Model ESD Protection

8

KV

ESD MM Machine Model ESD Protection

500

V

V

CC

V

CC

Pin Voltage

V

SS

- 0.3 to V

SS

+ 24

V

V

FB

Feedback Pin Voltage

V

SS

- 0.3 to V

CC

V

V

EN

EN Pin Voltage

V

SS

- 0.3 to V

IN

+ 0.3

V

V

OUT

Switch

Pin

Voltage

V

SS

- 0.3 to V

IN

+ 0.3

V

P

D

Power Dissipation

Internally limited

mW

T

J

Operating Junction Temperature Range

-20 to +125

o

C

T

ST

Storage Temperature Range

-65 to +150

o

C

Caution: The absolute maximum ratings are rated values exceeding which the product could suffer physical damage.

These values must therefore not be exceeded under any conditions.


Recommended Operating Conditions


Symbol

Parameter

Min

Max

Unit

V

IN

Input

Voltage

4

23

V

I

OUT

Output

Current

0

1.8

A

T

A

Operating Ambient Temperature

-25

85

o

C


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