MAX711

Step-Up/Down Voltage Conversion
+1.8V to +11V Input Range
Output: 5V/250mA at VIN = 1.8V 5V/500mA at VIN = 3.6V
No External FETs Required
Load Disconnected from Input in Shutdown
Battery Drain: 200A No-Load (VIN = 4V) 7A in Standby 0.2A when Off
Low-Noise and High-Efficiency Modes

Single-Cell, Lithium-Powered Portable Devices Digital Cameras 2- to 4-Cell AA Alkaline Hand-Held Equipment 3.3V and Other Low-Voltage Systems 2-, 3-, and 4-Cell Battery-Powered Equipment Battery-Powered Devices with AC Input Adapters

PS, LX, OUT to GND................................................................-0.3V to +11.5V
ILIM, SHDN, STBY, FB, 3/5, N/E, LBO,
LBI-, LBI+, REF to GND ..................................................-0.3V to (VPS + 0.3V)
PGND to GND ...........................................................................-0.3V to +0.3V
REF Short Circuit to GND ...............................................................Continuous
IOUT.....................................................................................................700mA
Continuous Power Dissipation (TA = +70°C)
SO (derate 8.70mW/°C above +70°C)..............................................696mW
Operating Temperature Range ............................................-40°C to +85°C
Storage Temperature Range .............................................-65°C to +160°C
Junction Temperature.........................................................................+150°C
Lead Temperature (soldering, 10sec) ................................................+300°C

The MAX710/MAX711 integrate a step-up DC-DC converter with a linear regulator to provide step-up/down voltage conversion. They are optimized for battery applications where the input varies above and below the regulated output voltage. MAX711 have an input range from +1.8V to +11V. Typical efficiency when boosting battery inputs is 85%.

The MAX710/MAX711 can be configured for minimum noise or optimum efficiency. Shutdown control turns off the part completely, disconnecting the input from the output (ISHDN = 0.2A). Standby control turns off only the step-up converter and leaves the low-power linear regulator active (IQ = 7A).

The MAX710 has a preset 3.3V or 5V output voltage. The MAX711 has an adjustable output that can be set from +2.7V to +5.5V with two resistors. Both devices come in 16-pin narrow SO packages.