参数资料
| 型号： | AP1539SDPG-13 |
| 厂商： | Diodes Inc |
| 文件页数： | 1/13页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 4A 8SOIC |
| 产品变化通告： | Copper Bond Wire Change 13/Jan/2012 |
| 标准包装： | 1 |
| 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： | 4A |
| 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： | 标准包装 |
| 供应商设备封装： | 8-SOP |
| 产品目录页面： | 1136 (CN2011-ZH PDF) |
| 其它名称： | AP1539SDPGDIDKR |
AP1539
18V 4A 300KHz BUCK CONVERTER
Features
General Description
?
?
?
?
?
?
?
?
?
?
Input voltage: 3.6V to 18V
Output voltage: 0.8V to V CC
Output current: up to 4A
Duty ratio: 0% to 99% PWM control
Oscillation frequency: 300KHz typ.
Soft-start like, Current limit and Enable function
Thermal Shutdown function
Built-in internal SW P-channel MOS
SOP-8L-DEP: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish / RoHS Compliant (Note 1)
AP1539 consists of step-down switching regulator with PWM
control. These devices include a reference voltage source,
oscillation circuit, error amplifier, internal PMOS.
AP1539 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 99%. 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 50KHz. 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-DEP 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
?
?
?
?
?
?
?
?
PC Motherboard
LCD Monitor
Graphic Card
DVD-Video Player
Telecom Equipment
ADSL Modem
Printer and other Peripheral Equipment
Microprocessor core supply
Typical Application Circuit
V IN
Vcc
Output
L1
22uH
V OUT = 5V/4A
C IN
R OCSET C OCSET
3.9K Option
OCSET
AP 1539
FB
Cc
Option *
R A
6.8K
+
C
+
C OUT
-
470uF
CVcc
0.1uF
R EN
100K
C EN
EN
V SS
D1 **
R B
1.3K
-
0.1uF
470uF ***
0.1uF
V OUT = V FB x (1+ R A /R B )
R B = 0.7K~5K ohm
Notes:
* Typical feedback compensation (Cc): 5600pF.
** Suggested DIODES Power Schottky P/N: B540 series or PDS540.
*** Suggested C OUT for V OUT < 1V; 680uF.
AP1539 Rev. 4
DS31477
1 of 13
OCTOBER 2009
? Diodes Incorporated
相关PDF资料 |
PDF描述 |
|---|---|
| AP1601M10G-13 | IC REG BOOST ADJ 1.2A 10MSOP |
| AP1603WL-7 | IC REG BOOST 3.3V 0.15A SOT26 |
| AP1604AWG-7 | IC REG BOOST ADJ 0.8A SOT25 |
| AP1605SL-13 | IC REG BUCK ADJ 3A 8SOIC |
| AP1609SG-U | IC REG BOOST ADJ 2.4A 8SOIC |
相关代理商/技术参数 |
参数描述 |
|---|---|
| AP-155 | 制造商:Amphenol Aerospace 功能描述:U-229-M55116/5, AUDIO PLUG 制造商:Amphenol Nexus 功能描述:AUDIO PLUG 5 CONDUCTOR - Bulk |
| AP-155/5-1 | 制造商:Amphenol Nexus 功能描述:PLUG - Bulk |
| AP-155/5-2 | 制造商:Amphenol Nexus 功能描述:PLUG - Bulk |
| AP-155/5-3 | 制造商:Amphenol Nexus 功能描述:PLUG - Bulk |
| AP-155/5-4 | 制造商:Amphenol Nexus 功能描述:PLUG - Bulk |
发布紧急采购，3分钟左右您将得到回复。