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参数资料
| 型号： | AP1513SL-U |
| 厂商： | Diodes Inc |
| 文件页数： | 1/9页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 2A 8SOIC |
| 标准包装： | 100 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 18 V |
| 输入电压： | 3.6 V ~ 18 V |
| 频率 - 开关： | 300kHz |
| 电流 - 输出： | 2A |
| 同步整流器： | 无 |
| 工作温度： | -20°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
| 供应商设备封装： | 8-SOP |
AP1513
PWM CONTROL 2A STEP-DOWN CONVERTER
Features
General Description
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Input voltage: 3.6V to 18V
Output voltage: 0.8V to V CC
Duty ratio: 0% to 100% PWM control
Oscillation frequency: 300KHz typ.
Soft-start, Current limit, Enable function
Thermal Shutdown function
Built-in internal SW P-channel MOS
SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
AP1513 consists of step-down switching regulator with PWM
control. These devices include a reference voltage source,
oscillation circuit, error amplifier, and internal PMOS.
AP1513 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 as well as a soft-start circuit that
prevents overshoot at startup. An enable function, an over
current protect function and a short circuit protect function 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.
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
SOP–8L mini-package, providing such outstanding features as
low current consumption. Since this converter can accommodate
an input voltage up to 18V, it is also suitable for the operation via
an AC adapter.
Applications
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PC Motherboard
LCD Monitor
Graphic Card
DVD-Video Player
Telecom Equipment
ADSL Modem
Printer and other Peripheral Equipment
Microprocessor core supply
Networking power supply
Typical Application Circuit
V IN
C IN
R OCSET C OCSET
3K Option
Vcc
OCSET
AP1513
Output
FB
L1
33uH
C C
Optional
R A
6.8K
+
C
V OUT = 5V/2A
+
C OUT
470uF
CVcc
0.1uF
R EN
100K
C EN
0.1uF
EN
V SS
D1
SBR2U30P1
- 0.1uF -
R B
1.3K
470uF
Note: V OUT = V FB x (1+R A /R B )
R B =0.7K~5K ohm
V IN = 12V, I MAX = 2A
AP1513 Rev. 4
DS31053
V OUT
L1 Value
2.5V 3.3V
22uH 27uH
1 of 9
www.diodes.com
5V
33uH
JULY 2009
? Diodes Incorporated
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