MAX8880_07 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – 12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK

19-1679; Rev 2; 12/07
12V, Ultra-Low-I_Q, Low-Dropout
Linear Regulators with POK
General Description
The MAX8880/MAX8881 are ultra-low supply current,
low-dropout linear regulators, capable of delivering up
to 200mA. They are designed for battery-powered
applications where reverse battery protection and long
battery life are critical.
These regulators’ low 3.5µA supply current extends bat-
tery life in applications with long standby periods. Unlike
PNP-based designs, a 2Ω PMOS device maintains ultra-
low supply current throughout the entire operating range
and in dropout. The parts are internally protected from
output short circuits, reverse battery connection, and
thermal overload. An internal power-OK (POK) com-
parator indicates when the output is out of regulation.
The MAX8880 output is adjustable from 1.25V to 5V
using an external resistor-divider. The MAX8881 pro-
vides only factory-preset output voltages of 1.8V, 2.5V,
3.3V, or 5V (see Ordering Information). The devices are
available in 6-pin SOT23 and 6-pin TDFN packages.
________________________Applications
Smoke Detectors
Battery-Powered Alarms
Remote Transmitters
Smart Battery Packs
PDAs
Handy Terminals
CMOS Backup Power
Real-Time Clocks
Pin Configurations
Features
♦ 3.5µA Supply Current at 12V
♦ Reverse Battery Protection
♦ 2.5V to 12V Input Voltage Range
♦ ±1.5% Output Voltage Accuracy
♦ 200mA max Output Current
♦ 2Ω PMOS Output Device
♦ Short-Circuit and Thermal Overload Protection
♦ POK Output for Out-of-Regulation Indicator
♦ Fixed 1.8V, 2.5V, 3.3V, and 5V (MAX8881)
Adjustable from 1.25V to 5V (MAX8880)
♦ Tiny 6-Pin SOT23 Package
♦ Thin 6-Pin TDFN Package
Typical Operating Circuit
TOP VIEW
IN 1
6 POK
GND 2 ^MAX8880 5 SHDN
MAX8881
OUT 3
4 FB
SOT23-6
POK SHDN IN
6 54
MAX8880
1 23
FB GND OUT
TDFN
3mm x 3mm
V_IN
2.5V TO 12V
1μF
IN
OUT
FB
MAX8881
ON
OFF
SHDN
POK
GND
V_OUT
1.25V TO 5V
UP TO 200mA
4.7μF
REGULATION OK
Ordering Information
PART
MAX8880EUT-T
MAX8880ETT-T
MAX8881EUT18-T
MAX8881EUT25-T
MAX8881EUT33-T
MAX8881EUT50-T
OUTPUT
Adjustable
Adjustable
1.8V
2.5V
3.3V
5.0V
TEMP RANGE
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C
PIN-PACKAGE
6 SOT23-6
6 TDFN
6 SOT23-6
6 SOT23-6
6 SOT23-6
6 SOT23-6
TOP MARK
AAHR
AGS
AAHS
AAHT
AAHU
AAHV
________________________________________________________________ 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.