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
__________Typical Operating Circuit
Functional Diagrams
C1
N/E
LBO
LBI+
STBY
3.3V
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
TEMP. RANGE
MAX710C/D
0°C to +70°C
MAX710ESE
MAX711C/D
MAX711ESE
-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
__________________Pin Configuration
TOP VIEW
+1.8V TO +11V
INPUT
ON
____________________________Features
OFF
SHDN
ON
MAX710
L1
C2
PS
OUTPUT
3.3V/5V
OUT
C4
REF
PGND
GND ILIM
STBY 5
MAX710
MAX711
13 REF
12 PS
3/5 (FB) 6
11 LBI+
N/E 7
10 LBI-
LBO 8
9
C3
0.1µF
Pin Configurations appear at end of data sheet.
Functional Diagrams continued at end of data sheet.
UCSP is a trademark of Maxim Integrated Products, Inc.
14 GND
ILIM 3
SHDN 4
3/5
LBI-
15 PGND
PGND 2
LX
STBY
5V
16 LX
LX 1
OUT
SO
( ) IS FOR THE MAX711.
For pricing, delivery, and ordering information, please contact Maxim Direct
at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.
19-1254; Rev 0; 7/97
