Datasheet

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

General Description

The MAX5091 high-voltage linear regulator is designed to

operate from a +5V to +28V input voltage, and withstands

up to 40V transients. The device consumes only 45μA of

quiescent current at 100μA output current. The MAX5091

delivers up to 100mA of output current with low 50mV

maximum dropout voltage. The MAX5091 provides an

active-low open-drain microprocessor RESET output. The

reset timeout period is programmable and can be set with

an external capacitor. The MAX5091 includes an uncom-

mitted comparator for input voltage monitoring/power-

fail indication. The device is available with a fixed +5V

(MAX5091A) or +3.3V (MAX5091B) output. The MAX5091

is short-circuit protected and includes thermal shutdown.

The MAX5091 operates over the -40°C to +125°C auto-

motive temperature range and is available in 8-pin, ther-

mally enhanced TDFN-EP and SO-EP packages.

Applications

● Industrial

● Home Security/Safety

● Telecom/Networking

Features

● +5V to +28V Wide Operating Input Voltage Range

● Withstands 40V Input Voltage Transients

● Guaranteed 100mA Output Current

● 45μA Typical Quiescent Current at 100μA Output

Current

● Preset +5V (MAX5091A) or +3.3V (MAX5091B)

Output Voltage

● Stable with Only 10μF Output Capacitance

● RESET Output with Adjustable Timeout Period

● Uncommitted Comparator for Voltage Monitoring/

Power-Fail Indication

● Output Overload and Short-Circuit Protection

● Thermal Shutdown

● Available in 8-Pin TDFN (1.95W at T

= +70°C) and

8-Pin SO (1.5W at T

= +70°C)

● Operates Over -40°C to +125°C Automotive

Temperature Range

19-0654; Rev 1; 5/14

+Denotes a lead(Pb)-free/RoHS-compliant package.

*EP = Exposed pad.

T = Tape and reel.

Pin Configurations continued at end of data sheet.

PART TEMP RANGE PRESET V

OUT

(V) PIN-PACKAGE TOP MARK

MAX5091AATA+T -40°C to +125°C 5 8 TDFN-EP* +APB

MAX5091AASA+ -40°C to +125°C 5 8 SO-EP* —

MAX5091BATA+T -40°C to +125°C 3.3 8 TDFN-EP* +APC

MAX5091BASA+ -40°C to +125°C 3.3 8 SO-EP* —

µC

RESET

+5V TO +28V

288kΩ

10µF

0.1µF

OUT

10µF

100kΩ

+5V (MAX5091A)/

+3.3V (MAX5091B)

100mA

GND

RES

10kΩ

OUT

RES

POWER-

FAIL

OFF

10kΩ

MAX5091

1 3 4

6 5

OUT

RES GND

EN CTSI

TDFN

(3mm x 3mm)

TOP VIEW

MAX5091

EXPOSED PADDLE

MAX5091 28V, 100mA, Low-Quiescent-Current LDO

with Reset and Power-Fail Input/Output

Typical Application Circuit Pin Congurations

Ordering Information

Summary of content (13 pages)

PAGE 1
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output General Description Features ●● ●● ●● ●● The MAX5091 high-voltage linear regulator is designed to operate from a +5V to +28V input voltage, and withstands up to 40V transients. The device consumes only 45μA of quiescent current at 100μA output current. The MAX5091 delivers up to 100mA of output current with low 50mV maximum dropout voltage. The MAX5091 provides an active-low open-drain microprocessor RESET output.
PAGE 2
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Absolute Maximum Ratings VS to GND..............................................................-0.3V to +28V VS to GND (t ≤ 1s)..................................................-0.3V to +40V VOUT to GND..........................................................-0.3V to +20V VS to OUT...............................................................-0.3V to +28V RES, SO to GND..................................................
PAGE 3
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Electrical Characteristics (MAX5091A) (continued) (VS = +14V, VOUT = 5V, EN unconnected, TA = TJ = -40°C to +125°C, CIN = 10μF, COUT = 10μF, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 85 90 94.
PAGE 4
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Electrical Characteristics (MAX5091B) (VS = +14V, VOUT = 3.3V, EN unconnected, TA = TJ = -40°C to +125°C, CIN = 10μF, COUT = 10μF, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 1) PARAMETER Output Voltage SYMBOL VOUT MIN TYP MAX TA = +25°C, IOUT = 1mA CONDITIONS 3.267 3.3 3.333 5V ≤ VS ≤ 28V, IOUT = 1mA to 50mA (Note 2) 3.234 3.3 3.
PAGE 5
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Electrical Characteristics (MAX5091B) (continued) (VS = +14V, VOUT = 3.3V, EN unconnected, TA = TJ = -40°C to +125°C, CIN = 10μF, COUT = 10μF, unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS 1.09 1.15 1.23 V 50 100 150 mV 0.
PAGE 6
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Typical Operating Characteristics (continued) (Typical Application Circuit, VS = +14V, CIN = 10μF, COUT = 10μF, VSI = 0V, VEN = +2.4V, VOUT = +5V, TA = +25°C, unless otherwise noted.) OUTPUT VOLTAGE vs. TEMPERATURE IOUT = 1mA 4.975 IOUT = 10mA 4.
PAGE 7
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Typical Operating Characteristics (continued) (Typical Application Circuit, VS = +14V, CIN = 10μF, COUT = 10μF, VSI = 0V, VEN = +2.4V, VOUT = +5V, TA = +25°C, unless otherwise noted.) IOUT = 100mA 200 150 100 50 -40 -5 65 100 4.44 30 65 100 0 135 4.3 4.4 MAX5091 toc15 4.5 4.7 4.6 SENSE THRESHOLD vs. TEMPERATURE SENSE OUTPUT vs. SENSE INPUT POWER-SUPPLY REJECTION RATIO vs. SUPPLY CURRENT 1.20 1.
PAGE 8
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Typical Operating Characteristics (continued) (Typical Application Circuit, VS = +14V, CIN = 10μF, COUT = 10μF, VSI = 0V, VEN = +2.4V, VOUT = +5V, TA = +25°C, unless otherwise noted.
PAGE 9
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output LDO PASS ELEMENT VS VINT 3µA MAX VOUT MAX5091 VREF GND ENABLE ALWAYS-ON EN VOUT ICT 2µA PREREGULATOR ALWAYS-ON VINT 3.6V (MAX) N DELAY COMPARATOR RES N 2.1V 0.9 x VREF SCLIM FAULT DETECTION (TEMP AND SC) CT VREF 1.25V SD VREF SO SI N VREF Figure 1. Functional Diagram www.maximintegrated.
PAGE 10
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Detailed Description SI/SO Comparator Regulator The MAX5091 high-voltage, LDO regulator operates from +5V to +28V input voltage. The device withstands up to 40V transients, providing protection against temporary overvoltage conditions like load dump. The MAX5091 incorporates internal feedback resistors for factory-preset voltages of either +5V (MAX5091A) or +3.3V (MAX5091B).
PAGE 11
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Applications Information Available Output Current Calculation The MAX5091 high-voltage regulator provides up to 100mA of output current. The input voltage extends to +28V. Package power dissipation limits the amount of output current available for a given input/output voltage and ambient temperature. Figure 2 depicts the maximum power dissipation curve for the 8-pin SO-EP package.
PAGE 12
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Pin Configurations (continued) Chip Information PROCESS: BiCMOS TOP VIEW VS 1 + SI 2 EN MAX5091 3 CT 4 EXPOSED PADDLE SO-EP www.maximintegrated.com 8 VOUT 7 SO 6 RES 5 GND Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only.
PAGE 13
MAX5091 28V, 100mA, Low-Quiescent-Current LDO with Reset and Power-Fail Input/Output Revision History REVISION NUMBER REVISION DATE 0 11/06 Initial release — 1 5/14 Removed “Automotive” from the Applications section 1 DESCRIPTION PAGES CHANGED For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.