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APW7075OC-TRL 参数 Datasheet PDF下载

APW7075OC-TRL图片预览
型号: APW7075OC-TRL
PDF下载: 下载PDF文件 查看货源
内容描述: 升压型转换器和LDO组合 [Step-Up Converter and LDO Combo]
分类和应用: 转换器
文件页数/大小: 23 页 / 426 K
品牌: ANPEC [ ANPEC ELECTRONICS COROPRATION ]
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APW7075
Step-Up Converter and LDO Combo
Features
Built-In a 500mA LDO and Synchronous Step-Up
DC-DC Converter
Built-In PWM/PFM Operating Mode
Provided Dual Input Power Sources
Connect FB to OUT for 3.3V Output Voltage or
GND for 2.5V Output Voltage or an External
Resistor Divider for Adjustable Output Voltage.
General Description
The APW7075 is a PWM/PFM, high-efficiency and
step-up DC-DC converter with an integrated LDO input
switch for dual mode application. During battery mode
operation, the APW7075 acts as synchronous recti-
fier and step-up DC-DC converter with a fixed or ad-
justable output voltage. When the VIN pin sense 5V
input voltage, the APW7075 is switched to LDO op-
eration mode, maintaining the constant output voltage.
The input voltage ranges from 0.6 V to 4.5V for step-
up DC-DC converter. The start-up is guaranteed at1V
and the device is operating down to 0.6V. When the
device is at LDO operating mode, the suitable output
voltage 3.3V and loading current 500mA for maximum
power consumption are guaranteed.
The APW7075 is suited for dual mode and portable
battery powered appliance with low-battery detector.
In dual-mode applications, the APW7075 draws power
from any available 5V USB connection and reverts to
battery power when the USB power is removed.
Fixed 300KHz Operating Frequency
High Efficiency Up to 94% at 200mA Output
Current
0.6V to 4.5V Operating Voltage
1V Start Up Input Voltage
Low Battery Voltage Detection
Reverse Voltage Protection
Internal Synchronous Rectifier
Automatic Detection Input Voltage
Compact SOP-8-P and TSSOP-8 Packages
Lead Free Available (RoHS Compliant)
Applications
Dual Mode Power System
USB Peripheral
Camcorders and Digital Camera
Hand-held Instrument
PDAs
Pin Description
TSSOP-8 Top View
VIN
FB
SHDN
LBI
SOP-8-P Top View
VIN
FB
SHDN
LBI
1
2
3
4
8
7
6
5
OUT
LX
GND
LBO
1
2
3
4
8
7
6
5
OUT
LX
GND
LBO
= Thermal Pad
(connected to GND plane for better heat
dissipation)
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
©
ANPEC Electronics Corp.
Rev. A.5 - Aug., 2005
1
www.anpec.com.tw