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AP1515 Fiches technique(PDF) 1 Page - Anachip Corp

No de pièce AP1515
Description  150KHz, 1.5A PWM Buck DC/DC Converter
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AP1515 Fiches technique(HTML) 1 Page - Anachip Corp

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AP1515
150KHz, 1.5A PWM Buck DC/DC Converter
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.1.0 Oct 29, 2004
1/6
Features
- Output voltage: 3.3V and adjustable output
version
- Adjustable version output voltage range, 1.23V to
18V+4%
- 150KHz +15% fixed switching frequency
- Voltage mode non-synchronous PWM control
- Thermal-shutdown and current-limit protection
- Operating voltage can be up to 22V
- Output load current: 1.5A
- SIP-4L Pb-Free package
- Low power standby mode
- Built-in switching transistor on chip
- Very Low Cost
Applications
- Simple High-efficiency step-down regulator
- On-card switching regulators
- Positive to negative converter
General Description
The AP1515 series are monolithic IC designed for a
step-down DC/DC converter, and own the ability of
driving a 1.5A 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. If current
limit function occurred and VFB is down to 0.5V
below, the switching frequency will be reduced.
The AP1515 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
and an adjustable type. The packages are available
in a standard 4-lead SIP-4L package.
Pin Assignments
1515
12
4
3
1 : V
IN
2 : Output
3 : FB
4 : GND
(Front View)
SIP-4L
Pin Descriptions
Name
Description
VIN
Operating voltage input
Output
Switching output
FB
Output voltage feedback control
GND
Ground


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