MAX5024TASA+ Maxim Integrated Products, MAX5024TASA+ Datasheet

MAX5024TASA+

Manufacturer Part Number

MAX5024TASA+

Description

IC REG LINEAR W/RESET 8-SOIC

Manufacturer

Maxim Integrated Products

Type

Linearr

Datasheet

1.MAX5024SASA.pdf (13 pages)

Specifications of MAX5024TASA+

Regulator Topology

Positive Fixed or Adjustable

Voltage - Output

3.3V, 2.5 ~ 11 V

Voltage - Input

6.5 ~ 65 V

Voltage - Dropout (typical)

0.9V @ 150mA

Number Of Regulators

Current - Output

150mA (Min)

Operating Temperature

-40°C ~ 125°C

Mounting Type

Surface Mount

Package / Case

8-SOIC (3.9mm Width)

Package

8SOIC EP

Function

Standard

Number Of Outputs

Input Voltage Range

65 to 6.5 V

Output Voltage

2.5 to 11|3.3 V

Maximum Output Current

0.15(Min) A

Output Type

Adjustable|Fixed

Typical Dropout Voltage @ Current

0.9@150mA V

Polarity

Positive

Reference Voltage

1.248(Typ) V

Output Current

0.15 A

Line Regulation

0.5 mV / V

Load Regulation

1 mV / mA

Dropout Voltage (max)

1.5 V

Input Voltage Max

65 V

Maximum Operating Temperature

+ 125 C

Minimum Operating Temperature

- 40 C

Maximum Power Dissipation

1538 mW

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

Current - Limit (min)

Lead Free Status / Rohs Status

Lead free / RoHS Compliant

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The MAX5023/MAX5024 high-voltage linear regulators

operate from a +6.5V to +65V input voltage and deliver

up to 150mA of output current. These devices consume

only 60µA of quiescent current with no load and with-

stand a -60V reverse-battery voltage at the input. The

MAX5023/MAX5024 include an active-low internal

microprocessor (µP) reset circuit that asserts when the

regulator output drops below the preset output voltage

threshold by 7.5% or 12.5%, depending on the device

selected. Both devices are available with a fixed +3.3V

or +5V output. These devices are short-circuit protected

and include thermal shutdown.

In addition to an enable input to turn on or off the regu-

lator, the MAX5023/MAX5024 include a HOLD input

that allows for the implementation of a self-holding

circuit without requiring external components. Setting

HOLD low after enabling the regulator, forces the regu-

lator to remain on even if EN is subsequently set low.

Releasing HOLD shuts down the regulator.

The MAX5023 includes a watchdog input that monitors a

pulse train from the µP and generates reset pulses if the

watchdog input remains high or low for a duration longer

than the 1.6s watchdog timeout period. The MAX5024

includes a SET input which, when connected to ground,

selects a preset output voltage of +3.3V (MAX5024S/

MAX5024T) or +5V (MAX5024L/MAX5024M). Set the

adjustable output voltage by connecting SET to the regu-

lator’s output through a resistive-divider network.

The MAX5023/MAX5024 operate over the automotive

temperature range (-40°C to +125°C) and are available

in a thermally enhanced, surface-mount 8-pin SO-EP

package.

65V, Low-Quiescent-Current, High-Voltage Linear

19-2619; Rev 2; 5/05

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

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

Regulators with µP Reset and Watchdog Timer

Automotive

Industrial

Home Security

TOP VIEW

________________________________________________________________ Maxim Integrated Products

General Description

RESET

GND

Fire/Smoke Alarms

Telecom/Networking

Applications

MAX5023

SO-EP

OUT

WDI

N.C.

HOLD

♦ Wide Operating Input Voltage Range

♦ Thermally Enhanced 8-Pin SO Package with

♦ Guaranteed 150mA Output Current

♦ 60µA No-Load Supply Current

♦ -60V Reverse-Battery Protection

♦ Preset +3.3V or +5.0V Output Voltage

♦ Thermal and Short-Circuit Protection

♦ Operate Over -40°C to +125°C Temperature Range

♦ Integrated µP Reset Circuit

♦ Watchdog Timer with 1.6s Timeout Period

♦ Regulator Enable and Hold Inputs Implement

♦ SET Input for Adjustable Output Voltage

Note: These parts offer a choice of reset thresholds, reset

threshold tolerances, and regulator output voltages. From the

Selector Guide, insert the desired suffix letter into the blank to

complete the part number.

*EP = Exposed Paddle.

Selector Guide and Typical Operating Circuit appear at end

of data sheet.

MAX5023_ ASA

MAX5024_ ASA

+6.5V to +65V

Exposed Pad Dissipates 1.5W

(MAX5023)

Self-Holding Circuit

(MAX5024)

PART

RESET

GND

-40°C to +125°C

TEMP RANGE

MAX5024

Ordering Information

SO-EP

Pin Configurations

OUT

SET

N.C.

HOLD

PIN-PACKAGE

8 SO-EP*

Features

Related parts for MAX5024TASA+

MAX5024TASA+ Summary of contents

Page 1

... EN 2 GND 3 RESET 4 ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com. ♦ Wide Operating Input Voltage Range +6.5V to +65V ♦ Thermally Enhanced 8-Pin SO Package with Exposed Pad Dissipates 1.5W ♦ ...

Page 2

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer ABSOLUTE MAXIMUM RATINGS IN to GND ................................................................-60V to +70V EN to GND ...................................................-0. HOLD to GND...........................................-0. SET, WDI, OUT to GND .......................................-0.3V to +13.2V RESET ...

Page 3

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer ELECTRICAL CHARACTERISTICS (continued +14V 1mA 10µ OUT IN unless otherwise noted. Typical specifications are at T PARAMETER SYMBOL ∆V Load Regulation ...

Page 4

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer (V = +14V 10µ 15µ OUT OUTPUT VOLTAGE vs. INPUT VOLTAGE 5.5 5.0 4.5 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ...

Page 5

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer (V = +14V 10µ 15µ OUT INPUT VOLTAGE STEP RESPONSE MAX5023 toc10 5V V OUT 1V/div 65V V IN 20V/div V = ...

Page 6

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer (V = +14V 10µ 15µ OUT GROUND-CURRENT DISTRIBUTION (T = +40° ...

Page 7

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer Detailed Description The MAX5023/MAX5024 high-voltage linear regulators include an integrated µP reset circuit and watchdog timer/adjustable output voltage. The devices guarantee 150mA load drive and are available with preset ...

Page 8

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer BATT V BATT WHEN WATCHDOG IS HELD WDI OV OUT HIGH AND EN = HIGH RESET OUT POR BATT V BATT IN EN ...

Page 9

... POWER-ON RESET 4) HOLD ACTIVE, CLAMPED TO GND BY EXTERNAL µP 5) ENABLE INACTIVE, CLAMPED BY INT, PULLDOWN RESISTOR Figure 3. Enable and Hold Behavior Dual Mode is a trademark of Maxim Integrated Products, Inc. _______________________________________________________________________________________ load conditions. Thermal protection protects the MAX5023/MAX5024 in the event of fault conditions. For continuous operation, do not exceed the absolute maxi- mum junction temperature rating +150° ...

Page 10

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer Table 1. Truth Table for Regulator Output State HOLD ORDER EN OUT Initial state. EN has 5MΩ internal resistor to ground. 1 Low X Off HOLD has internal current ...

Page 11

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer Example +95° +14V +5V OUT Find the maximum allowable output current. First calcu- late package dissipation at the given temperature ...

Page 12

Low-Quiescent-Current, High-Voltage Linear Regulators with µP Reset and Watchdog Timer PRESET V OUT PART 5V 3.3V ✔ MAX5023L — ✔ MAX5023M — ✔ MAX5023T — ✔ MAX5023S — ✔ MAX5024L — ✔ MAX5024M — ✔ MAX5024T — ✔ MAX5024S ...

Page 13

... 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. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 13 © 2005 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products, Inc ...

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