MAX5087BATE datasheet(3/13 Pages) MAXIM

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45V, 400mA, Low-Quiescent-Current

Linear Regulator with Adjustable Reset Delay

_______________________________________________________________________________________

Note 2: Limits at TA = -40°C are guaranteed by design.

Note 3: Output voltage is tested using a pulsed load current of less than 50ms duration.

Note 4: Dropout voltage is defined as (VIN - VOUT) when VOUT is 100mV below the value of VOUT for VIN = VOUT + 3V.

Note 5: Startup time measured from 50% of VIN to 90% of VOUT.

Note 6: Continuous short-circuit protection for VIN > 14V not guaranteed.

ELECTRICAL CHARACTERISTICS (continued)

(VIN = 14V, IOUT = 1mA, CIN = 47µF (low ESR), COUT = 15µF, VEN = 2.4V, 10k

Ω from RESET to OUT, TA = TJ = -40°C to +125°C,

unless otherwise noted. Typical specifications are at TA = +25°C.) (Note 2)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

VEN = 2.4V

0.35

Enable Input Current

IEN

VEN = 14V

3.4

µA

SET Reference Voltage

VSET

1.200

1.235

1.260

SET Input Leakage Current

ISET

-100

+0.5

+100

Load Regulation

ΔVOUT /

ΔIOUT

IOUT = 1mA to 400mA (Note 3)

0.1

0.35

Power-Supply Rejection Ratio

PSRR

IOUT = 10mA, f = 100Hz, 500mVP-P,

VOUT = 5V

Short-Circuit Current

ISC

VIN < 14V (Note 6)

640

Thermal Shutdown Temperature

TJ(SHDN)

175

°C

Thermal Shutdown Hysteresis

ΔTJ(SHDN)

°C

RESET Voltage Threshold

VRESET

% VOUT

RESET Threshold Hysteresis

VRHYST

2% VOUT

RESET Output Low Voltage

VRL

ISINK = 1mA

0.4

RESET Output Leakage Current

IRH

VRESET = 5V

µA

RESET Output Minimum Timeout

Period

When VOUT reaches RESET threshold,

CCT = Open

µs

ENABLE to RESET Minimum

Timeout Period

When EN goes high, CCT = open

170

µs

Delay Comparator Threshold

(Rising)

1.196

1.230

1.264

Delay Comparator Threshold

Hysteresis

100

CT Charge Current

124

µA

CT Discharge Current

5mA

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