AP1537 데이터 시트보기 (PDF) - Anachip Corporation
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AP1537 Datasheet PDF : 7 Pages
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PWM Control 3A Step-Down Converter
AP1537
Function Description
PWM Control
The AP1537 consists of DC/DC converters that
employ a pulse-width modulation (PWM) system.
In converters of the AP1537, the pulse width varies
in a range from 0 to 100%, according to the load
current. The ripple voltage produced by the
switching can easily be removed through a filter
because the switching frequency remains constant.
Therefore, these converters provide a low-ripple
power over broad ranges of input voltage and load
current.
Under Voltage Lockout
The under voltage lockout circuit of the AP1537
assures that the high-side MOSFET driver outputs
remain in the off state whenever the supply voltage
drops below 3.3V. Normal operation resumes once
VCC rises above 3.5V.
RDS(ON) Current Limiting
The current limit threshold is setting by the internal
circuit.
Marking Information
( Top View )
8
5
AP1537
YY WW X
1
4
Logo
Part no.
ID code: internal
Xth week: 01~52
Year: "01" =2001
"02" =2002
Anachip Corp.
www.anachip.com.tw
Rev. 1.3 May 09, 2006
6/7
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