Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - LDO voltage regulator Positive, fixed SOT 23 6

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.

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.

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

MAX8880/MAX8881

12V, Ultra-Low-I

, Low-Dropout

Linear Regulators with POK

________________________________________________________________ Maxim Integrated Products 1

GND

FBOUT

16POK

MAX8880

MAX8881

MAX8880

SOT23-6

TOP VIEW

SHDN

POK IN

GND OUT

2 3

6 5 4

TDFN

3mm x 3mm

SHDN

Pin Configurations

OUT

GND

4.7μF1μF

OFF

SHDN

2.5V TO 12V

REGULATION OK

OUT

1.25V TO 5V

UP TO 200mA

POK

MAX8881

Typical Operating Circuit

________________________Applications

19-1679; Rev 2; 12/07

Ordering Information

PART OUTPUT TEMP RANGE PIN-PACKAGE TOP MARK

MAX8880EUT-T Adjustable -40°C to +85°C 6 SOT23-6 AAHR

MAX8880ETT-T Adjustable -40°C to +85°C 6 TDFN AGS

MAX8881EUT18-T 1.8V -40°C to +85°C 6 SOT23-6 AAHS

MAX8881EUT25-T 2.5V -40°C to +85°C 6 SOT23-6 AAHT

MAX8881EUT33-T 3.3V -40°C to +85°C 6 SOT23-6 AAHU

MAX8881EUT50-T 5.0V -40°C to +85°C 6 SOT23-6 AAHV

Smoke Detectors

Battery-Powered Alarms

Remote Transmitters

Smart Battery Packs

PDAs

Handy Terminals

CMOS Backup Power

Real-Time Clocks

Summary of content (12 pages)

PAGE 1
9-1679; Rev 2; 12/07 12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK 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 battery life in applications with long standby periods.
PAGE 2
MAX8880/MAX8881 12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK ABSOLUTE MAXIMUM RATINGS 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 ...........................
PAGE 3
12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK (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 SYMBOL Thermal Shutdown Threshold TTSD OUT Noise Note 1: Note 2: Note 3: Note 4: CONDITIONS MIN TYP (Hysteresis = 15°C) VOUT(NOISE) f = 10Hz to 100kHz, IOUT = 1mA MAX UNITS 160 °C 300 μVRMS All devices are 100% production tested at TA = +25°C. All temperature limits are guaranteed by design.
PAGE 4
Typical Operating Characteristics (continued) (VIN = 5V, VOUT = 3.3V, IOUT = 30mA, COUT = 4.7µF, TA = +25°C, unless otherwise noted. See Figure 1.) SUPPLY CURRENT OUTPUT VOLTAGE ERROR OUTPUT VOLTAGE vs. LOAD CURRENT vs. LOAD CURRENT vs. INPUT VOLTAGE -0.1 -0.2 -0.3 -0.4 MAX8880/1-09 3.00 OUTPUT VOTLAGE (V) 3.7 SUPPLY CURRENT (μA) 0 3.50 MAX8880/1-08 0.1 OUTPUT VOLTAGE ERROR (%) 3.8 MAX8880/1-07 0.2 3.6 3.5 2.50 2.00 1.50 1.00 3.4 0.50 -0.5 3.3 -0.
PAGE 5
12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK PIN MAX888_ (SOT) NAME FUNCTION 1 MAX888_ (TDFN) 4 IN 2 2 GND Ground 3 3 OUT Output Voltage. Bypass with a 4.7µF capacitor (<0.5Ω ESR) to GND for load currents up to 200mA. For load currents up to 40mA, 1µF is acceptable. 4 1 FB Feedback Set Point, 1.25V (MAX8880 only). Output sense, connect to OUT externally (MAX8881 only). 5 5 SHDN ON/OFF Control. Regulator is ON when V SHDN > 2V. If unused, connect to IN.
PAGE 6
MAX8880/MAX8881 12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK IN SHDN REVERSE BATTERY PROTECTION MOS DRIVER WITH ILIMIT ERROR AMP P OUT FB SHUTDOWN LOGIC MAX8881 POK 1.25V REF THERMAL SENSOR POK 91% REF GND Figure 2. Functional Diagram Current Limiting VIN 2.5V TO 12V IN VOUT 1.25V TO 5.5V UP TO 200mA OUT C1 1μF C2 4.7μF R3 Thermal Overload Protection MAX8880 FB SHDN GND POK REGULATION OK R4 Figure 3.
PAGE 7
12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK (MAX ) where TJ(MAX) = +150°C, TA is the ambient temperature, θJC is the thermal resistance from the junction to the case, and θCA is the thermal resistance from the case through the PC board, copper traces, and other materials to the surrounding air. POK Output The open-drain POK output is useful as a simple error flag, as well as a delayed reset output. POK sinks current when the output voltage is 10% below the regulation point.
PAGE 8
Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 6LSOT.
PAGE 9
12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK PACKAGE OUTLINE, SOT 6L BODY 21-0058 I 2 2 _______________________________________________________________________________________ 9 MAX8880/MAX8881 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.
PAGE 10
Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information go to www.maxim-ic.com/packages.) 6, 8, &10L, DFN THIN.
PAGE 11
12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK COMMON DIMENSIONS PACKAGE VARIATIONS SYMBOL MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b [(N/2)-1] x e A 0.70 0.80 T633-2 6 1.50±0.10 2.30±0.10 0.95 BSC MO229 / WEEA 0.40±0.05 1.90 REF D 2.90 3.10 T833-2 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF E 2.90 3.10 T833-3 8 1.50±0.10 2.30±0.10 0.65 BSC MO229 / WEEC 0.30±0.05 1.95 REF A1 0.00 0.05 T1033-1 10 1.50±0.10 2.30±0.10 0.
PAGE 12
MAX8880/MAX8881 12V, Ultra-Low-IQ, Low-Dropout Linear Regulators with POK Revision History REVISION NUMBER REVISION DATE 2 12/07 DESCRIPTION Correction to Pin Description, updated Package Information, incorporated style changes PAGES CHANGED 1, 5, 8–11 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied.