Datasheet

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

AVAILABLE

Functional Diagrams

Pin Configurations appear at end of data sheet.

Functional Diagrams continued at end of data sheet.

UCSP is a trademark of Maxim Integrated Products, Inc.

For pricing, delivery, and

ordering information, please contact Maxim Direct

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

_______________General Description

The MAX603/MAX604 low-dropout, low quiescent cur-

rent, linear regulators supply 5V, 3.3V, or an adjustable

output for currents up to 500mA. They are available in a

1.8W SO package. Typical dropouts are 320mV at 5V

and 500mA, or 240mV at 3.3V and 200mA. Quiescent

currents are 15µA typ and 35µA max. Shutdown turns

off all circuitry and puts the regulator in a 2µA off mode.

A unique protection scheme limits reverse currents

when the input voltage falls below the output. Other fea-

tures include foldback current limiting and thermal

overload protection.

The output is preset at 3.3V for the MAX604 and 5V for

the MAX603. In addition, both devices employ Dual

Mode™ operation, allowing user-adjustable outputs

from 1.25V to 11V using external resistors. The input

voltage supply range is 2.7V to 11.5V.

The MAX603/MAX604 feature a 500mA P-channel

MOSFET pass transistor. This transistor allows the

devices to draw less than 35µA over temperature, inde-

pendent of the output current. The supply current

remains low because the P-channel MOSFET pass tran-

sistor draws no base currents (unlike the PNP transis-

tors of conventional bipolar linear regulators). Also,

when the input-to-output voltage differential becomes

small, the internal P-channel MOSFET does not suffer

from excessive base current losses that occur with sat-

urated PNP transistors.

________________________Applications

5V and 3.3V Regulators

1.25V to 11V Adjustable Regulators

Battery-Powered Devices

Pagers and Cellular Phones

Portable Instruments

Solar-Powered Instruments

____________________________Features

♦ 500mA Output Current, with Foldback Current

Limiting

♦ High-Power (1.8W) 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 500mA P-Channel Pass Transistor

♦ 15µA Typical Quiescent Current

♦ 2µA (Max) Shutdown Mode

♦ Thermal Overload Protection

♦ Reverse-Current Protection

______________Ordering Information

* Dice are tested at T

= +25°C, DC parameters only.

** Contact factory for availability.

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

Low I

, 500mA Linear Regulators

OUT

GND

SET

GND

OFF

MAX603

MAX604

DIP/SO

TOP VIEW

__________________Pin Configuration

MAX603

MAX604

OUT

SETGND

OFF

OUT

10µF

BATTERY

OUTPUT

VOLTAGE

__________Typical Operating Circuit

19-0269; Rev 0; 9/94

PART

MAX603CPA

MAX603CSA

MAX603C/D 0°C to +70°C

0°C to +70°C

TEMP. RANGE PIN-PACKAGE

8 Plastic DIP

8 SO

Dice*

MAX603EPA

MAX603ESA -40°C to +85°C

-40°C to +85°C 8 Plastic DIP

8 SO

MAX603MJA -55°C to +125°C 8 CERDIP**

MAX604CPA

MAX604CSA

MAX604C/D 0°C to +70°C

0°C to +70°C

0°C to +70°C 8 Plastic DIP

8 SO

Dice*

MAX604EPA

MAX604ESA -40°C to +85°C

-40°C to +85°C 8 Plastic DIP

8 SO

MAX604MJA -55°C to +125°C 8 CERDIP**

™ Dual Mode is a trademark of Maxim Integrated Products.

MAX603/MAX604

Summary of content (12 pages)

PAGE 1
MAX603/MAX604 LE AVAILAB 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators _______________General Description The MAX603/MAX604 low-dropout, low quiescent current, linear regulators supply 5V, 3.3V, or an adjustable output for currents up to 500mA. They are available in a 1.8W SO package. Typical dropouts are 320mV at 5V and 500mA, or 240mV at 3.3V and 200mA. Quiescent currents are 15µA typ and 35µA max. Shutdown turns off all circuitry and puts the regulator in a 2µA off mode.
PAGE 2
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators ABSOLUTE MAXIMUM RATINGS Supply Voltage (IN or OUT to GND).......................-0.3V to +12V Output Short-Circuit Duration ..............................................1 min Continuous Output Current ...............................................600mA SET, OFF Input Voltages ...........................-0.3V to the greater of (IN + 0.3V) or (OUT + 0.3V) Continuous Power Dissipation (TA = +70°C) Plastic DIP (derate 9.
PAGE 3
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators ELECTRICAL CHARACTERISTICS (continued) (VIN = 6V (MAX603) or 4.3V (MAX604), CIN = COUT = 10µF, OFF = VIN, SET = GND, TJ = TMIN to TMAX, unless otherwise noted. Typical values are at TJ = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS TYP MAX MAX603 6 20 VOUT = 3.0V MAX604 6 20 VIN = 0V, VOUT = 4.5V (MAX603) VOUT = 3.0V (MAX604) 0.
PAGE 4
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators __________________________________________Typical Operating Characteristics (VIN = 7V for MAX603, VIN = 5.3V for MAX604, OFF = VIN, SET = GND, CIN = COUT = 10µF, RL = 1kΩ, TJ = +25°C, unless otherwise noted.) 0.96 0.95 0.1 5 10 1 100 0 700 MAX604, VIN = 5.3V, VOUT = 3.3V 10 1 100 LOAD CURRENT (mA) OUTPUT VOLTAGE vs. TEMPERATURE QUIESCENT CURRENT vs.
PAGE 5
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators _____________________________Typical Operating Characteristics (continued) (VIN = 7V for MAX603, VIN = 5.3V for MAX604, OFF = VIN, SET = GND, CIN = COUT = 10µF, RL = 1kΩ, TJ = +25°C, unless otherwise noted.) OVERSHOOT AND TIME EXITING SHUTDOWN MODE LOAD-TRANSIENT RESPONSE B 5V A A B MAX603 VOUT = 5V 0V 2ms/div 500µs/div A: OFF PIN VOLTAGE (1V/div) RISE TIME = 13µs B: MAX603 OUTPUT VOLTAGE (1V/div) DELAY = 4.
PAGE 6
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators IN SHUTDOWN ERROR AMP OFF MOSFET DRIVER WITH FOLDBACK CURRENT LIMIT REVERSE CURRENT PROTECTION P SHUTDOWN LOGIC OUT SET R1 THERMAL SENSOR 1.20V REFERENCE DUAL-MODE COMPARATOR GND 80mV R2 MAX603 MAX604 Figure 2.
PAGE 7
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators Output Voltage Selection The MAX603/MAX604 feature dual-mode operation. In preset voltage mode, the output of the MAX603 is set to 5V and the output of the MAX604 is set to 3.3V using internal, trimmed feedback resistors. Select this mode by connecting SET to ground. In adjustable mode, an output between 1.25V and 11V is selected using two external resistors connected as a voltage divider to SET (Figure 3).
PAGE 8
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators MAXIMUM OUTPUT CURRENT vs. SUPPLY VOLTAGE 1.5 1.4 MAX603, VOUT = 5V 8-PIN SO PACKAGE PAPER EPOXY BOARD SINGLE SIDED 1oz. COPPER TJ = +125°C TA = +25°C STILL AIR 1.3 1.2 1.1 1.0 0.2 1.3 1 6.5 10 65 600 500 400 300 200 100 0 20 (in2) 130 (cm2) HIGH-POWER SOIC PLASTIC DIP OPERATING REGION AT TA = +25°C TJ = +125°C 4 5 6 MAX603/4-FIG-04A 1.
PAGE 9
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators __________Applications Information OUT IN OFF CIN BATTERY OUTPUT VOLTAGE MAX603 MAX604 COUT 10µF GND SET Figure 6. 3.3V or 5V Linear-Regulator Application Figure 6 illustrates the typical application for the MAX603/MAX604. Capacitor Selection and Regulator Stability Normally, use 0.1µF to 10µF capacitors on the input and 10µF on the output of the MAX603/MAX604.
PAGE 10
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators Input-Output (Dropout) Voltage A regulator’s minimum input-output voltage differential, or dropout voltage, determines the lowest usable supply voltage. In battery-powered systems, this will determine the useful end-of-life battery voltage. Because the MAX603/MAX604 use a P-channel MOSFET pass transistor, their dropout voltage is a function of rDS(ON) multiplied by the load current (see Electrical Characteristics).
PAGE 11
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators ________________________________________________________Package Information D E DIM E1 A A1 A2 A3 B B1 C D1 E E1 e eA eB L A3 A A2 L A1 0° - 15° e C B1 eA B eB D1 P PACKAGE PLASTIC DUAL-IN-LINE DIM PINS D D D D D D DIM D 0°-8° A e 0.101mm 0.005in. B A1 E C H L S PACKAGE SMALL OUTLINE INCHES MAX MIN 0.200 – – 0.015 0.175 0.125 0.080 0.055 0.022 0.016 0.065 0.045 0.012 0.008 0.080 0.005 0.325 0.
PAGE 12
MAX603/MAX604 5V/3.3V or Adjustable, Low-Dropout, Low IQ, 500mA Linear Regulators ___________________________________________Package Information (continued) DIM E1 E D A 0°-15° Q L L1 e C B1 B S1 S J PACKAGE (0.300 in.) CERDIP DUAL-IN-LINE A B B1 C E E1 e L L1 Q S S1 INCHES MIN MAX – 0.200 0.014 0.023 0.038 0.065 0.008 0.015 0.220 0.310 0.290 0.320 0.100 0.125 0.200 0.150 – 0.015 0.070 – 0.098 0.005 – DIM PINS D D D D D D 8 14 16 18 20 24 MILLIMETERS MIN MAX – 5.08 0.36 0.58 0.97 1.65 0.