ACE708
Technology
Description
300mA Iout, 0.85V startup, 1MHz, Synchronous Boost Converter
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 1MHz 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
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Up to 95% Efficiency
1MHz 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 (IQ<1uA)
Available in SOT-23-5
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
EN, FB, OUT Voltage
Junction to Ambient Thermal Resistance
Maximum Power Dissipation
Operating Temperature Range
Storage Temperature
Symbol
V
IN
Max
-0.3~6
-0.3~6
190
0.45
-40~150
-55~150
O
Unit
V
V
C/ W
W
O
O
C
C
VER 1.2
1
ACE [ ACE TECHNOLOGY CO., LTD. ]
