Diodes AP1533 - Manual (Page 3)

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