3.3V/5V or Adjustable / Step-Up/Down DC-DC Converters
Description
AVAILABLE
EVALUATION KIT AVAILABLE
MAX710/MAX711 3.
3V/5V or Adjustable, Step-Up/Down DC-DC Converters
_______________General Description
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.
They 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.
2µA).
Standby control turns off only the step-up converter and leaves the low-power linear regulator active (IQ = 7µA).
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.
________________________Applications
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
____________________________Features
o Step-Up/Down Voltage Conversion
o +1.
8V to +11V Input Range
o Output: 5V/250mA at VIN = 1.
8V 5V/500mA at VIN = 3.
6V
o No External FETs Required
o Load Disconnected from Input in Shutdown
o Battery Drain: 200µA No-Load (VIN = 4V) 7µA in Standby 0.
2µA when Off
o Low-Noise and High-Efficiency Modes
______________Ordering Information
PART MAX710C/D MAX710ESE MAX711C/D MAX711ESE
TEMP.
RANGE 0°C to +70°C -40°C to +85°C 0°C to +70°C -40°C to +85°C
PIN-PACKAGE Dice 16 Narrow SO Dice 16 Narrow SO
__________TypiFcuanl cOtpioenraaltiDngiaCgriracmusit __________________Pin Configuration
+1.
8V TO +11V INPUT
C1
ON
STBY 3.
3V
OFF ON
5V
N/E LBI+ LBO
SHDN MAX710
STBY 3/5
LX
PS OUT
LBI-
L1
C2
OUTPUT 3.
3V/5V C4
REF
C3 0.
1µ...
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