General Description
The MAX8569A/MAX8569B low-quiescent-current
boost regulators provide up to 200mA at output volt-
ages up to 5.5V from a 1.5V to 5.5V input source. The
built-in synchronous rectifier allows for over 90% effi-
ciency while achieving small size and low cost by elimi-
nating the need for an external Schottky diode.
The MAX8569A provides an adjustable output while the
MAX8569B is fixed at 3.0V or 3.3V. The MAX8569B fea-
tures a power-on reset output (RST) to signal that the
output has reached regulation. All devices connect the
battery input to the output during shutdown, allowing
the input battery to be used as a backup or real-time
clock supply when the converter is off.
Applications
Features
♦ Over 200mA Available Output Current
♦ 1.5V to 5.5V Input Voltage Range
♦ BATT Connected to OUT in Shutdown for Backup
Power
♦ Up to 95% Efficiency
♦ 7µA Typical Quiescent Current
♦ <1µA Shutdown Supply Current
♦ Internal Synchronous Rectifier
♦ 750mA Switch Current Limit
♦ RST Output (MAX8569B)
♦ Adjustable Output Voltage (MAX8569A)
♦ Fixed 3.0V or 3.3V Output Voltage (MAX8569B)
MAX8569A/MAX8569B
200mA Step-Up Converters in 6-Pin
SOT23 and TDFN
________________________________________________________________ Maxim Integrated Products 1
Pin Configurations
Ordering Information
19-3671; Rev 0; 5/05
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
EVALUATION KIT
AVAILABLE