Maxim MAX5091BASA+, MAX5091 Datasheet

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 uncommitted 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 auto­motive temperature range and is available in 8-pin,
thermally enhanced TDFN and SO-EP packages.

Applications

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

A

= +70°C) and

8-Pin SO (1.5W at T

A

= +70°C)

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

Temperature Range

MAX5091

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

with Reset and Power-Fail Input/Output

________________________________________________________________ Maxim Integrated Products 1

Pin Configurations

Ordering Information

μC
RESET

CT

SI

+5V TO +28V

R

H

288kΩ

C

IN

10μF

C

CT

0.1μF

C

OUT

10μF

R

L

100kΩ

+5V (MAX5091A)/

+3.3V (MAX5091B)

100mA

SO

GND

EN

R

RES

10kΩ

V

OUT

RES

POWER­FAIL

V

S

ON

OFF

V

IN

MAX5091

R

SO

10kΩ

Typical Application Circuit

19-0654; Rev 0; 11/06

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.

Note: All devices specified for -40°C to +125°C operating temperature range.

+Denotes lead-free package. *EP = Exposed paddle.

Pin Configurations continued at end of data sheet.

Automotive

Industrial

Home Security/Safety

Telecom/Networking

PART

MAX5091AATA+T 8 TDFN-8 5

MAX5091AASA+ 8 SO-EP* 5

MAX5091BATA+T 8 TDFN-8 3.3

MAX5091BASA+ 8 SO-EP* 3.3

PIN­PACKAGE

PRESET V

(V)

OUT

PKG

CODE

T833-2

S8E-14

T833-2

S8E-14

TOP

MARK

+APB

—

+APC

—

TOP VIEW

SO

V

OUT

8

+

134

V

S

(3mm x 3mm)

RES GND

7

MAX5091

EXPOSED PADDLE

2

EN CTSI

TDFN

65

MAX5091

28V, 100mA, Low-Quiescent-Current LDO
with Reset and Power-Fail Input/Output

2 _______________________________________________________________________________________

ABSOLUTE MAXIMUM RATINGS

ELECTRICAL CHARACTERISTICS (MAX5091A)

(VS= +14V, V

OUT

= 5V, EN unconnected, TA = TJ = -40°C to +125°C, C

IN

= 10µF, C

OUT

= 10µF, unless otherwise noted. Typical

specifications are at T

A

= +25°C.) (Note 1)

Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.

VSto GND ..............................................................-0.3V to +28V

V

S

to GND (t ≤ 1s) ..................................................-0.3V to +40V

V

OUT

to GND ..........................................................-0.3V to +20V

V

S

to OUT ...............................................................-0.3V to +28V

RES, SO to GND.....................................................-0.3V to +20V

RES, SO Output Sink Current................................................5mA

V

OUT

Short Circuit (VS≤ 16V)………… ......................Continuous

EN, SI to GND.........................................................-0.3V to +12V

CT to GND.............................-0.3V to the lower of V

OUT

or +12V

Continuous Power Dissipation (T

A

= +70°C)

8-Pin SO-EP (derate 19.2mW/°C above +70°C) .........1538mW*

Thermal Resistance (θ

JA

)................................................52°C/W

Thermal Resistance (θ

JC

)..................................................6°C/W

8-Pin TDFN-EP (derate 24.4mW/°C above +70°C).....1951mW**

Thermal Resistance (θ

JA

)................................................41°C/W

Thermal Resistance (θ

JC

)...............................................8.3°C/W

Operating Junction Temperature Range...........-40°C to +125°C

Maximum Junction Temperature .....................................+150°C

Storage Temperature Range .............................-60°C to +150°C

Lead Temperature (soldering, 10s) .................................+300°C

)

)

*As per JEDEC51 Standard (single-layer board).
**As per JEDEC51 Standard (multilayer board).

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage V

Dropout Voltage V

VS to V

OUT

Undervoltage

Line Regulation V

Load Regulation V

Current Limit I

Quiescent Current I

TA = +25°C, I

OUT

5.6V ≤ VS ≤ 28V, I

OUT

5.6V ≤ VS ≤ 40V, t ≤ 1s, I
(Note 2)

VS = +8V, I

= 1mA to 100mA 4.9 5 5.1

OUT

I

DP

VS = +4.75V

I

I

Difference in

V

OLO

LIM

VS = +4V, I

IO

+5.5V ≤ VS ≤ +28V, I

OL

1mA ≤ I

I

OUT

I

Q

OUT

I

OUT

= 35mA 0.4 V

OUT

≤ 100mA 17 50 mV

OUT

= 100µA 46 100

= 300µA 45 100

= 100mA 4.5 10 mA

= 1mA 4.95 5 5.05

OUT

OUT

OUT

OUT

= 1mA to 50mA (Note 2) 4.90 5 5.10

= 1mA to 30mA

OUT

4.9 5 5.1

= 10mA 0.1 0.25

= 50mA 0.2 0.4

= 100mA 0.3 0.5

= 1mA 0.6 5 mV

OUT

160 260 400 mA

V

V

µA

Shutdown Supply Current I

Thermal-Shutdown
Temperature

Thermal-Shutdown
Hysteresis

T

ΔT

SHDN

J(SHDN

J(SHDN

VEN ≤ +0.4V 17 30 µA

Temperature rising +165 °C

20 °C

MAX5091

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

with Reset and Power-Fail Input/Output

_______________________________________________________________________________________ 3

ELECTRICAL CHARACTERISTICS (MAX5091A) (continued)

(VS= +14V, V

OUT

= 5V, EN unconnected, TA = TJ = -40°C to +125°C, C

IN

= 10µF, C

OUT

= 10µF, unless otherwise noted. Typical

specifications are at T

A

= +25°C.) (Note 1)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RESET

Reset Threshold Voltage V

Reset Threshold
Hysteresis

Reset Pulse Delay t

RES Output Low Voltage V

RES Output High

Leakage Current

Delay Comparator
Threshold

Delay Comparator
Threshold Hysteresis

SENSE

Sense Threshold V

Sense Threshold
Hysteresis

Sense Output
Low Voltage

Sense Output
Leakage Current

Sense Input Current I

ENABLE

Enable Voltage V

Enable Internal
Pullup Current

RT

V

RTH

RD

RL

I

RH

V

CTTH

ST

V

SL

I

SH

SI

EN

I

EN

V

falling 85 90 94.5 %V

OUT

CCT = 100nF, tR ≥ 100µs 55 110 180 ms

VS ≥ +1.5V,R

V

= 5V 1.0 µA

RES

VCT rising 1.9 2.1 2.4 V

V

falling 1.10 1.16 1.24 V

SI

VSI ≤ 1.10V, VS ≥ 4V, RSO = 10kΩ to V

VSO = 5V, VSI ≥ 1.5V 1 µA

VSI = 3.3V -1 +1 µA

EN = high, regulator on 2.4

EN = low, regulator off 0.4

EN is internally pulled up to 3.6V (max) 3 µA

= 10kΩ to V

RES

OUT

OUT

30 65 100 mV

100 mV

50 100 150 mV

OUT

0.4 V

0.4 V

V

MAX5091

28V, 100mA, Low-Quiescent-Current LDO
with Reset and Power-Fail Input/Output

4 _______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (MAX5091B)

(VS= +14V, V

OUT

= 3.3V, EN unconnected, TA= TJ= -40°C to +125°C, C

IN

= 10µF, C

OUT

= 10µF, unless otherwise noted. Typical

specifications are at T

A

= +25°C.) (Note 1)

)

)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

Output Voltage V

VS to V

OUT

Undervoltage

Line Regulation V

Load Regulation V

Current Limit I

Quiescent Current I

Shutdown Supply
Current

Thermal-Shutdown
Temperature

Thermal-Shutdown
Hysteresis

RESET CIRCUIT

OUT

TA = +25°C, I
5V ≤ VS ≤ 28V, I

= 1mA 3.267 3.3 3.333

OUT

OUT

5V ≤ VS ≤ 40V, t < 1s, I
(Note 2)

Difference in

ΔT

T

J

V

IO

OL

OLO

LIM

Q

I

SHDN

( SHDN

J(SHDN

VS = +8V, I

VS = 3.5V, I

5V ≤ VS ≤ 28V, I
1mA ≤ I

I

= 100µA 45 100

OUT

I

= 300µA 45 100

OUT

I

= 100mA 4.4 10 mA

OUT

VEN ≤ 0.4V 17 30 µA

Temperature rising +165 °C

= 1mA to 100mA 3.234 3.3 3.366

OUT

= 35mA 0.2 0.4 V

OUT

OUT

≤ 100mA 11 40 mV

OUT

= 1mA to 50mA (Note 2) 3.234 3.3 3.366

= 1mA to 30mA

OUT

3.234 3.3 3.366

= 1mA 0.6 5 mV

160 260 400 mA

V

µA

20 °C

Reset Threshold Voltage V

Reset Threshold
Hysteresis

Reset Pulse Delay t

RES Output-Low Voltage V

RES Output-High

Leakage Current

Delay Comparator
Threshold

V

Delay Comparator
Threshold Hysteresis

RT

V

RTH

RD

RL

I

RH

CTTH

falling 85 90 94.5 %V

V

OUT

20 45 80 mV

CCT = 100nF, tR ≥ 100µs 55 105 180 ms

VS ≥ 1.5V, R

V

= 3.3V 1.0 µA

RES

= 4kΩ to V

RES

OUT

VCT rising 1.9 2.1 2.4 V

100 mV

OUT

0.4 V

MAX5091

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

with Reset and Power-Fail Input/Output

_______________________________________________________________________________________ 5

Note 1: Limits at TA= -40°C are guaranteed by design and not production tested.
Note 2: Maximum output current is limited by the power dissipation capability of the package.

ELECTRICAL CHARACTERISTICS (MAX5091B) (continued)

(VS= +14V, V

OUT

= 3.3V, EN unconnected, TA= TJ= -40°C to +125°C, C

IN

= 10µF, C

OUT

= 10µF, unless otherwise noted. Typical

specifications are at T

A

= +25°C.) (Note 1)

Typical Operating Characteristics

(Typical Application Circuit, VS= +14V, CIN= 10µF, C

OUT

= 10µF, VSI= 0V, VEN= +2.4V, V

OUT

= +5V, TA= +25°C, unless other-

wise noted.)

OUTPUT VOLTAGE vs. INPUT VOLTAGE

MAX5091 toc01

VS (V)

V

OUT

(V)

10

5

15

3

4

5

6

2

0

MAX5091AV

OUT

AT NO LOAD, 100μA,

1mA, 10mA, 100mA

OUTPUT VOLTAGE vs. INPUT VOLTAGE

MAX5091 toc02

VS (V)

V

OUT

(V)

54321

1

2

3

4

0

06

MAX5091BV

OUT

AT NO LOAD, 100μA,

1mA, 10mA, 100mA

OUTPUT VOLTAGE vs. OUTPUT CURRENT

MAX5091 toc03

I

OUT

(mA)

V

OUT

(V)

1010.1

4.92

4.94

4.96

4.98

5.00

5.02

5.04

4.90

0.01 100

MAX5091A

VS = 14V

VS = 6V

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

SENSE

Sense Threshold V

Sense Threshold
Hysteresis

Sense Output-Low
Voltage

Sense Output
Leakage Current

Sense Input Current I

ENABLE

Enable Voltage V

Enable Internal
Pullup Current

ST

V

SL

I

SH

SI

EN

I

EN

VSI falling 1.09 1.15 1.23 V

VSI ≤ 1.09V, VS ≥ 4V, RSO = 10kΩ to V

VSO = 3.3V, VSI ≥ 1.5V 1 µA

VSI = 3.3V -1 +1 µA

EN = high, regulator on 2.4

EN = low, regulator off 0.4

EN is internally pulled up to 3.6V (max) 3 µA

OUT

50 100 150 mV

0.4 V

V