AP1520SG-13(2017) 查看數據表（PDF） - Diodes Incorporated.
零件编号
产品描述 (功能)
生产厂家
AP1520SG-13 Datasheet PDF : 9 Pages
| |||
AP1520
PWM CONTROL 2A STEP-DOWN CONVERTER
Description
AP1520 consists of step-down switching regulator with PWM control.
These devices include a reference voltage source, oscillation circuit,
error amplifier and internal PMOS.
Pin Assignments
(Top View)
AP1520 provides low-ripple power, high efficiency and excellent
transient characteristics. The PWM control circuit is able to vary the
duty ratio linearly from 0 up to 100%. This converter also contains an
error amplifier circuit. An enable function, an over current protection
and a short circuit protection are built inside, and when OCP or SCP
happens, the operation frequency will be reduced from 300kHz to
30kHz. Also, an internal compensation block is built in to minimum
external component count.
FB 1
EN 2
OCSET 3
VCC 4
AP1520
8 Vss
7 Vss
6 Output
5 Output
With the addition of an internal P-channel Power MOS, a coil,
capacitors, and a diode connected externally, these ICs can function
as step-down switching regulators. They serve as ideal power supply
units for portable devices when coupled with the SO-8 package,
providing such outstanding features as low current consumption.
Since this converter can accommodate an input voltage up to 23V, it is
also suitable for the operation via an AC adapter.
Features
Input Voltage: 3.6V to 23V
Output Voltage: 0.8V to VCC
Duty Ratio: 0% to 100% PWM Control
Oscillation Frequency: 300kHz Typ
Current Limit, Enable Function
Thermal Shutdown Function
Built-in Internal SW P-channel MOS
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free.“Green” Device (Note 3)
SO-8
Applications
PC Motherboard
LCD Monitor
Graphic Card
DVD-Video Player
Telecom Equipment
ADSL Modem
Printer and Other Peripheral Equipment
Microprocessor Core Supply
Networking Power Supply
Notes: 1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free,"Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Typical Applications Circuit
VIN
Vcc
Output
ROCSET COCSET
3K
Option
AP1520
CIN
OCSET
FB
680µF
EN
VSS
CVcc
REN
100K
0.1µF
CEN
0.1µF
L1
22µH
CC
Optional
D1
VOUT
RA
6.8K
++
C
- 0.1µF-
RB
1.3K
COUT
470µF
Note: VOUT=VFB x (1+RA/RB)
RB=0.7kΩ to 5kΩ
AP1520
Document number: DS31174 Rev. 6 - 2
1 of 9
www.diodes.com
December 2017
© Diodes Incorporated
Share Link: 