AP1538SG-U 查看數據表（PDF） - Diodes Incorporated.
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AP1538SG-U Datasheet PDF : 14 Pages
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AP1538
18V 3A 300KHz BUCK CONVERTER
Block Diagram
Vcc
Output
Oscillation
Circuit
Reference Voltage
Source with Soft Start
Thermal
Shutdown
PWM-Switched
+
Control Circuit
-
FB
VEN
90uA
Vss
EN
OCSET
Absolute Maximum Ratings
Symbol
Parameter
Rating
ESD HBM Human Body Model ESD Protection
7
ESD MM Machine Model ESD Protection
450
VCC
VFB
VEN
VOUT
VCC Pin Voltage
Feedback Pin Voltage
EN Pin Voltage
Switch Pin Voltage
VSS - 0.3 to VSS + 20
VSS - 0.3 to VCC
VSS - 0.3 to VCC
VSS - 0.3 to VCC
PD
Power Dissipation
Internally limited
TJ
Operating Junction Temperature Range
TST
Storage Temperature Range
-40 to +125
-65 to +150
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.
Unit
KV
V
V
V
V
V
mW
oC
oC
Recommended Operating Conditions
Symbol
Parameter
Min
Max
Unit
VIN
Input Voltage (Note 4)
IOUT
Output Current
TA
Operating Ambient Temperature
3.6
18
V
0
3
A
-20
+85
oC
Notes: 4. For the operations in low input voltage, AP1538 can tolerate down to 3.6V but max output current loading will be less than 3A. For nominal
applications in such low input voltage range, especially lower than 4V, a higher ROCSET with larger heat sink is recommended.
AP1538 Rev. 2
3 of 14
www.diodes.com
JUNE 2008
© Diodes Incorporated
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