Linear Regulators. MAX8880 Datasheet

MAX8880 Datasheet PDF, Equivalent


Part Number

MAX8880

Description

12V / Ultra-Low-IQ / Low-Dropout Linear Regulators

Manufacture

Maxim

Total Page 12 Pages
PDF Download
Download MAX8880 Datasheet PDF


MAX8880 Datasheet
19-1679; Rev 2; 12/07
12V, Ultra-Low-IQ, 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
VIN
2.5V TO 12V
1μF
IN OUT
FB
MAX8881
ON
OFF SHDN
POK
GND
VOUT
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.

MAX8880 Datasheet
12V, Ultra-Low-IQ, Low-Dropout
Linear Regulators with POK
ABSOLUTE MAXIMUM RATINGS
IN to GND ................................................................-14V to +14V
SHDN to GND .............................................-0.3V to (VIN + 0.3V),
-0.3V to +0.3V when VIN < 0V
OUT, FB to GND...............................-0.3V to +6V when VIN > 5.7V,
-0.3V to (VIN + 0.3V) when 0V VIN 5.7V,
-0.3V to +0.3V when VIN < 0V
POK to GND ...........................................................-0.3V to +14V
OUT Continuous Current...................................................200mA
OUT Short Circuit...........................................................Indefinite
Continuous Power Dissipation (TA = +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C)...........696mW
6-Pin TDFN (derate 24.4mW/°C above +70°C) ........1951mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature ......................................................+150°C
Storage Temperature.........................................-65°C to +165°C
Lead Temperature (soldering, 10s) .................................+300°C
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
ELECTRICAL CHARACTERISTICS
(VIN = VOUT + 1V, SHDN = IN, COUT = 4.7µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
Input Voltage Range
Supply Current
Shutdown Supply Current
Input Undervoltage Lockout
FB Voltage, Adjustable
Mode
OUT Voltage Accuracy
(Note 2)
OUT Voltage Range
OUT Line Regulation
OUT Load Regulation (Note 3)
Current Limit (Note 3)
Dropout Voltage (Notes 3, 4)
IN Reverse Leakage Current
Foldback Current Limit
SHDN Input Threshold
SHDN Input Bias Current
FB Input Bias Current
POK Trip Threshold
POK Off-Current
POK Low Voltage
SYMBOL
VIN
IIN
IIN(SHDN)
VUVLO
VFB
VOUT
IOUT
ΔVDO
IIN(REV)
IOUT(SC)
VIH
VIL
IFB
IPOK
VPOK
CONDITIONS
VIN = 12V
V SHDN = 0, VIN = 12V, VOUT = 0, TA = +25°C
MAX8880,
IOUT = 20mA
TA = +25°C
TA = 0°C to +85°C
TA = -40°C to +85°C
MAX8881,
IOUT = 20mA
TA = +25°C
TA = 0°C to +85°C
TA = -40°C to +85°C
MAX8880
VIN = VOUT + 1V to 12V
IOUT = 10μA to 100mA
IOUT = 50mA
VIN = -12V, V SHDN = 0
VIN = 5V, VOUT = 0
VIN = 2.5V to 12V
V SHDN = 0 to 12V, TA = +25°C
FB = 1.25V, TA = +25°C, MAX8880 only
Falling
TA = +25°C
TA = -40°C to +85°C
Hysteresis
VPOK = 12V, TA = +25°C
IPOK = 1mA
MIN
2.5
1.238
1.232
1.219
-1.5
-2
-3
1.25
200
2
-100
0
87.5
86
TYP
3.5
1.5
2.1
1.257
0.01
0.006
400
100
250
MAX
12
10
3
2.4
1.276
1.282
1.295
1.5
2
3
5.5
0.05
0.015
200
1
UNITS
V
μA
μA
V
V
%
V
%/V
%/mA
mA
mV
mA
mA
2
90.5
1.5
50
0.5
100
20
93.5
95
100
200
V
nA
nA
% of
VOUT
nA
mV
2 _______________________________________________________________________________________


Features Datasheet pdf 19-1679; Rev 0; 4/00 12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK General Description The MAX8880/MAX888 1 are ultra-low supply current, low-dro pout linear regulators, capable of deli vering up to 200mA. They are designed f or battery-powered applications where r everse battery protection and long batt ery life are critical. These regulators ’ low 3.5µA supply current extends b attery life in applications with long s tandby periods. Unlike PNP-based design s, a 2Ω PMOS device maintains ultra-l ow supply current throughout the entire operating range and in dropout. The pa rts are internally protected from outpu t short circuits, reverse battery conne ction, and thermal overload. An interna l powerOK (POK) comparator indicates wh en the output is out of regulation. The MAX8880 output is adjustable from 1.25 V to 5V using an external resistor-divi der. The MAX8881 provides only factory- preset output voltages of 1.8V, 2.5V, 3 .3V, or 5V (see Ordering Information). Both devices are available in.
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