MAX882_08 Datasheet, PDF (1/17 Pages) Maxim Integrated Products – 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators

19-0275; Rev 3; 9/08
5V/3.3V or Adjustable, Low-Dropout,
Low I_Q, 200mA Linear Regulators
General Description
The MAX882/MAX883/MAX884 linear regulators maxi-
mize battery life by combining ultra-low supply currents
and low dropout voltages. They feature 200mA output
current capability at up to +125°C junction temperature
and come in a 1.5W SOIC package. The 1.5W package
(compared to 0.47W for standard SOIC packages)
allows a wider operating range for the input voltage and
output current. The MAX882/MAX883/MAX884 use a P-
channel MOSFET pass transistor to maintain a low 11µA
(15µA max) supply current from no-load to the full
200mA output. Unlike earlier bipolar regulators, there are
no PNP base current losses that increase with output
current. In dropout, the MOSFET does not suffer from
excessive base currents that occur when PNP transistors
go into saturation. Typical dropout voltages are 220mV
at 5V and 200mA, or 320mV at 3.3V and 200mA.
The MAX882 features a 7µA standby mode that disables
the output but keeps the reference, low-battery compara-
tor, and biasing circuitry alive. The MAX883/MAX884 fea-
ture a shutdown (OFF) mode that turns off all circuitry,
reducing supply current to less than 1µA. All three
devices include a low-battery-detection comparator, fold-
back current limiting, reverse-current protection, and
thermal-overload protection.
The output is preset at 3.3V for the MAX882/MAX884
and 5V for the MAX883. In addition, all devices employ
Dual Mode™ operation, allowing user-adjustable outputs
from 1.25V to 11V using external resistors. The input volt-
age supply range is 2.7V to 11.5V.
For low-dropout linear regulators with output currents up
to 500mA, refer to the MAX603/MAX604 data sheet.
Applications
Pagers and Cellular Phones
3.3V and 5V Regulators
1.25V to 11V Adjustable Regulators
High-Efficiency Linear Regulators
Battery-Powered Devices
Portable Instruments
Solar-Powered Instruments
Pin Configuration
TOP VIEW
LBO 1
SET 2
GND 3
OUT 4
MAX882
MAX883
MAX884
8 LBI
7 ^{OFF (STBY)}
6 GND
5 IN
Features
♦ Foldback Current Limiting
♦ High-Power (1.5W) 8-Pin SO Package
♦ Dual Mode Operation: Fixed or Adjustable
Output from 1.25V to 11V
♦ Large Input Range (2.7V to 11.5V)
♦ Internal 1.1Ω P-Channel Pass Transistor
Draws No Base Current
♦ Low 220mV Dropout Voltage at 200mA
Output Current
♦ 11µA (typ) Quiescent Current
♦ 1µA (max) Shutdown Mode or 7µA (typ)
Standby Mode
♦ Low-Battery Detection Comparator
♦ Reverse-Current Protection
♦ Thermal-Overload Protection
Ordering Information
PART
TEMP RANGE
PIN-
PACKAGE
MAX882CPA
0°C to +70°C
8 PDIP
MAX882CSA
0°C to +70°C
8 SO
MAX882C/D
0°C to +70°C
Dice*
MAX882EPA
-40°C to +85°C 8 PDIP
MAX882ESA
-40°C to +85°C 8 SO
Ordering Information continued at end of data sheet.
*Dice are tested at T_J = +25°C, DC parameters only.
**Contact factory for availability.
Typical Operating Circuit
ON/OFF
OFF (STBY)
INPUT
VOLTAGE
BATTERY
C_IN
O.1μF
MAX882
IN
MAX883 ^OUT
LBI _MAX884
SET GND
OUTPUT
VOLTAGE
C_OUT
2.2μF
( ) ARE FOR MAX882.
DIP/SO
( ) ARE FOR MAX882.
Dual Mode is a trademark of Maxim Integrated Products.
________________________________________________________________ Maxim Integrated Products 1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim's website at www.maxim-ic.com.