AP1513 ANACHIP [Anachip Corp], AP1513 Datasheet - Page 6

• Manufacturer Part Number: AP1513
• Description: PWM Control 2A Step-Down Converter
• Manufacturer: ANACHIP [Anachip Corp]

PWM Control 2A Step-Down Converter
PWM Control
The AP1513 consists of DC/DC converters that
employ a pulse-width modulation (PWM) system.
In converters of the AP1513, 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 AP1513
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
V
Anachip Corp.
www.anachip.com.tw
CC
rises above 3.5V.
Function Description
Marking Information
8
1
AP1513
YY WW X
( Top View )
6/7
5
4
R
The current limit threshold is setting by the external
resistor connecting from V
internal 100uA sink current crossing the resistor
sets the voltage at the pin of OCSET. When the
PWM voltage is less than the voltage at OCSET, an
over-current condition is triggered.
See above formula for setting the current limit
value.
DS(ON)
Year: "01" =2001
Xth week: 01~52
Part no.
ID code: internal
Logo
Current Limiting
I
LOAD
"02" =2002
×
R
DS(ON)
=
CC
I
OCSET
supply to OCSET. The
×
R
Rev. 1.3 Nov 17, 2005
AP1513
OCSET