ACE708_12 Datasheet, PDF (1/8 Pages) ACE Technology Co., LTD. – 300mA Iout, 0.85V startup, 1.2MHz, Synchronous Boost Converter

ACE708
300mA Iout, 0.85V startup, 1.2MHz, Synchronous Boost Converter
Description
The ACE708 is a step-up converter that provides a boosted output voltage from a low voltage source.
Because of its proprietary design, it starts up at a very low input voltage down to 850mV, making it an
ideal choice for single cell alkaline/NiMH battery operations.
A switching frequency of 1.2MHz minimizes solution footprint by allowing the use of tiny, low profile
inductors and ceramic capacitors. The current mode PWM design is internally compensated, reducing
external parts count.
Features
 Up to 95% Efficiency
 1.2MHz Switching Frequency allows small inductor and output cap
 Input boost-strapping allows using small or no input cap
 Low Vin Start-up Voltage down to 850mV Ideal for Single Alkaline Cell operations
 Maximum Output Current up to 300mA
 Low Noise PWM control
 Internally Compensated Current Mode Control
 Internal Synchronous Rectifier
 Logic Control Shutdown (I_Q<1uA)
Application
 One to Three Cell Battery Operated Devices
 Medical Instruments
 Bluetooth Headsets
 Flash-Based MP3 Players
 Noise Canceling Headphones
Absolute Maximum Ratings
Parameter
SW Voltage
Max Unit
-0.3~6 V
EN, FB, OUT Voltage
-0.3~6 V
Junction to Ambient Thermal Resistance 190 ^OC/ W
Maximum Power Dissipation
Operating Temperature Range
Storage Temperature
0.45 W
-40~150 ^OC
-55~150 ^OC
Note: Exceed these limits to damage to the device.
Exposure to absolute maximum rating conditions may affect device reliability.
VER 1.4 1