Datasheet

ManualsBrandsMAXIM INTEGRATED ManualsPMICsPMIC - LDO voltage regulator Positive, fixed or adjustable SOIC 8 N

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

Features

o Foldback Current Limiting

o High-Power (1.5W) 8-Pin SO Package

o Dual Mode Operation: Fixed or Adjustable

Output from 1.25V to 11V

o Large Input Range (2.7V to 11.5V)

o Internal 1.1Ω p-Channel Pass Transistor

Draws No Base Current

o Low 220mV Dropout Voltage at 200mA

Output Current

o 11µA (typ) Quiescent Current

o 1µA (max) Shutdown Mode or 7µA (typ)

Standby Mode

o Low-Battery Detection Comparator

o Reverse-Current Protection

o Thermal-Overload Protection

MAX882/MAX883/MAX884

5V/3.3V or Adjustable, Low-Dropout,

Low I

, 200mA Linear Regulators

________________________________________________________________

Maxim Integrated Products

Pin Configuration

Typical Operating Circuit

19-0275; Rev 4; 7/09

Ordering Information continued at end of data sheet.

Dice are tested at T

= +25°C, DC parameters only.

Contact factory for availability.

Dual Mode is a trademark of Maxim Integrated Products, Inc.

MAX882

MAX883

MAX884

O.1μF

OUT

2.2μF

OUTPUT

VOLTAGE

INPUT

VOLTAGE

BATTERY

LBI

OFF (STBY)

( ) ARE FOR MAX882.

OUT

GNDSET

ON/OFF

LBI

OFF (STBY)

( ) ARE FOR MAX882.

GND

OUT

GND

SET

LBO

DIP/SO

TOP VIEW

MAX882

MAX883

MAX884

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

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.

Summary of content (17 pages)

PAGE 1
9-0275; Rev 4; 7/09 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators 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 Features o Foldback Current Limiting o High-Power (1.5W) 8-Pin SO Package o Dual Mode Operation: Fixed or Adjustable Output from 1.25V to 11V o Large Input Range (2.7V to 11.5V) o Internal 1.
PAGE 2
MAX882/MAX883/MAX884 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators ABSOLUTE MAXIMUM RATINGS High-Power SO (derate 18.75mW/°C above +70°C) .......1.5W CERDIP (derate 8.00mW/°C above +70°C) .................640mW Operating Temperature Ranges MAX88_C_A ........................................................0°C to +70°C MAX88_E_A .....................................................-40°C to +85°C Junction Temperature .....................................................
PAGE 3
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators (VIN = 6V (MAX883) or VIN = 4.3V (MAX882/MAX884), COUT = 2.2µF, STBY or OFF = VIN, SET = GND, LBI = VIN, TJ = -40°C to +85°C, unless otherwise noted. Typical values are at TJ = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS STBY = 0, VIN = 6V, SET = OUT STBY Quiescent Current (Note 4) OFF Quiescent Current IQ STBY IQ OFF STBY = 0, VIN = 11.
PAGE 4
MAX882/MAX883/MAX884 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators ELECTRICAL CHARACTERISTICS (continued) (VIN = 6V (MAX883) or VIN = 4.3V (MAX882/MAX884), COUT = 2.2µF, STBY or OFF = VIN, SET = GND, LBI = VIN, TJ = -40°C to +85°C, unless otherwise noted. Typical values are at TJ = +25°C.
PAGE 5
V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators OUTPUT VOLTAGE vs. TEMPERATURE 25 VOUT = 5V (MAX883) VOUT = 3.3V (MAX882/MAX884) 99 20 98 15 97 10 IQ OUTPUT VOLTAGE NORMALIZED TO OUTPUT VOLTAGE AT 1mA 96 5 0.1 1 10 100 103 102 101 100 99 98 97 96 0 95 0.01 MAX882/4-04a 100 104 NORMALIZED OUTPUT VOLTAGE (%) 30 MAX882/4-01 101 QUIESCENT CURRENT (mA) NORMALIZED OUTPUT VOLTAGE (%) OUTPUT VOLTAGE AND QUIESCENT CURRENT vs.
PAGE 6
Typical Operating Characteristics (continued) (VIN = 7V for MAX883, VIN = 5.3V for MAX882/MAX884, OFF or STBY = VIN, SET = GND, LBI = VIN, LBO = OPEN, CIN = COUT = 2.2µF, RL = 1kΩ, TA = +25°C, unless otherwise noted.
PAGE 7
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators PIN MAX882 MAX883/ MAX884 NAME DESCRIPTION 1 1 LBO Low-Battery Output is an open-drain output that goes low when LBI is less than 1.2V. Connect to IN or OUT through a pull-up resistor. LBO is undefined during shutdown mode (MAX883/MAX884). 2 2 SET Feedback for setting the output voltage. Connect to GND to set the output voltage to the preselected 3.3V or 5V. Connect to an external resistor network for adjustable-output operation.
PAGE 8
MAX882/MAX883/MAX884 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators IN LBI LOW-BATTERY COMPARATOR LBO MOSFET DRIVER WITH FOLDBACK CURRENT LIMIT N REVERSECURRENT PROTECTION P ERROR AMP SHUTDOWN LOGIC OFF (STBY) OUT 1.20V REFERENCE SET DUAL-MODE COMPARATOR THERMAL SENSOR R1 R2 65mV GND ( ) ARE FOR MAX882. Figure 1. MAX882/MAX883/MAX884 Functional Diagram In adjustable mode, the user selects an output voltage in the 1.
PAGE 9
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators IN OUTPUT VOLTAGE OUT R1 MAX882 OFF (STBY) MAX883 MAX884 CIN O.1µF GND IN LBI INPUT VOLTAGE LBI R1 LOAD SET R2 COUT 2.2µF CIN O.1µF R2 VSTBY TRIP = VSTBY R1 + R2 , VSET = 1.20V R2 Figure 2. Adjustable Output Using External Feedback Resistors MAX882 STBY ( ) ARE FOR MAX882. VOUT = VSET OUTPUT VOLTAGE OUT GND SET COUT 2.2µF R1+ R2 , VSTBY = 1.20V R2 Figure 3.
PAGE 10
1.2 1.1 1.0 0.9 0.1cm2 0.0155in2 10cm2 1.55in2 MAXIMUM POWER DISSIPATION LIMIT 200 150 100 50 HIGHPOWER SOIC PLASTIC DIP CERAMIC DIP OPERATING REGION AT TA = +25°C TJ = +125°C 0 1cm2 0.155in2 MAX882/4-05a MAXIMUM CURRENT 100cm2 15.5in2 2 MAXIMUM SUPPLY VOLTAGE LIMIT 1.3 250 TYPICAL DROPOUT VOLTAGE LIMIT 1.4 MAX883, VOUT = 5V 8-PIN SO PACKAGE 77.4cm2, SINGLE-SIDED BOARD 1oz COPPER GLASS EPOXY, TJ = +125°C, TA = +25°C, STILL AIR MAXIMUM OUTPUT CURRENT (mA) 1.5 MAX882/4-fig04 1.
PAGE 11
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators R1 CIN R2 O.1µF GND R3 MAX882 MAX883 MAX884 SET INPUT VOLTAGE OUT IN POWERCOUT FAIL INDICATION 2.2µF R1 + R2 , VLBI = 1.20V R2 Figure 6. Using the Low-Battery Comparator to Monitor Battery Voltage Reverse-Current Protection The MAX882/MAX883/MAX884 have a unique protection scheme that limits reverse currents when the input voltage falls below the output.
PAGE 12
70 A: COUT = 1µF B: COUT = 10µF C: COUT = 100µF 50 60 IOUT = 1mA MAX882/4-8b 60 MAX882/4-8a 80 40 50 PSRR (dB) PSRR (dB) MAX882/MAX883/MAX884 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators 40 30 C 30 20 MAX884 ∆VIN = 1VP-P CIN = 0µF COUT = 2.2µF 20 10 IOUT = 100mA A 0 0 100 101 102 103 104 105 106 FREQUEN Y (Hz) Figure 8a. Power-Supply Rejection Ratio vs.
PAGE 13
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators INPUT VOLTAGE OUTPUT VOLTAGE IN OUT LBI R1 COUT 2.2µF MAX882 D2 STBY CIN O.1µF R2 GND SET BACKUP BATTERY Figure 9. Short-Term Battery Backup Using the MAX882 When operating from sources other than batteries, supply-noise rejection and transient response can be improved by increasing the values of the input and output capacitors and employing passive filtering techniques.
PAGE 14
MAX882/MAX883/MAX884 5V/3.
PAGE 15
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators PACKAGE CODE DOCUMENT NO. 8 PDIP P8-T 21-0043 8 SO S8-6F 21-0041 PDIPN.EPS PACKAGE TYPE ______________________________________________________________________________________ 15 MAX882/MAX883/MAX884 Package Information For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only.
PAGE 16
Package Information (continued) For the latest package outline information and land patterns, go to www.maxim-ic.com/packages. Note that a "+", "#", or "-" in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. DIM A A1 B C e E H L N E H INCHES MILLIMETERS MAX MIN 0.053 0.069 0.010 0.004 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.
PAGE 17
5V/3.3V or Adjustable, Low-Dropout, Low IQ, 200mA Linear Regulators REVISION NUMBER REVISION DATE 3 9/08 Added information for rugged plastic product. 14 4 7/09 Revised Ordering Information table. 14 DESCRIPTION PAGES CHANGED Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.