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AP1501 Datasheet

  • AP1501

  • 150 Khz, 3A PWM Buck DC/DC Converter

  • 476.00KB

  • 13頁

  • ANACHIP   ANACHIP

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AP1501
150Khz, 3A PWM Buck DC/DC Converter
Features
-
Output voltage: 3.3V, 5V, 12V and adjustable
output version
-
Adjustable version output voltage range, 1.23V to
37V+4%
-
150Khz +15% fixed switching frequency
-
Voltage mode non-synchronous PWM control
-
Thermal-shutdown and current-limit protection
-
ON/OFF shutdown control input
-
Operating voltage can be up to 40V
-
Output load current: 3A
-
TO220-5L TO220-5L(R) and TO263-5L packages
-
Low power standby mode
-
Built-in switching transistor on chip
General Description
The AP1501 series are monolithic IC that design for
a step-down DC/DC converter, and own the ability
of driving a 3A load without additional transistor
component. Due to reducing the number of external
component, the board space can be saved easily.
The external shutdown function can be controlled
by logic level and then come into standby mode.
The internal compensation makes feedback control
have good line and load regulation without external
design. Regarding protected function, thermal
shutdown is to prevent over temperature operating
from damage, and current limit is against over
current operating of the output switch. The AP1501
series operates at a switching frequency of 150Khz
thus allowing smaller sized filter components than
what would be needed with lower frequency
switching regulators. Other features include a
guaranteed +4% tolerance on output voltage under
specified input voltage and output load conditions,
and +15% on the oscillator frequency. The output
version included fixed 3.3V, 5V, 12V, and an
adjustable type. The packages are available in a
standard 5-lead TO-220 package and a 5-lead
TO-263.
Applications
-
Simple High-efficiency step-down regulator
-
On-card switching regulators
-
Positive to negative converter
Pin Assignments
( Top View )
5 SD
4 FB
3 Gnd
2 Output
1 V
IN
Pin Descriptions
Name
V
IN
Output
Gnd
FB
SD
Description
Operating voltage input
Switching output
Ground
Output voltage feedback control
ON/OFF Shutdown
Metal Tab GND
TO263-5L
( Top View )
5 SD
4 FB
3 Gnd
2 Output
1 V
IN
TO220-5L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. A7 Feb. 10, 2004
1/11

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