MAX1963 datasheet(3/12 Pages) MAXIM

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Low-Input-Voltage, 300mA LDO Regulators

with RESET in SOT and TDFN

_______________________________________________________________________________________

Note 1: Limits are 100% production tested at TA = +25°C. Limits over the operating temperature range are guaranteed by design.

Note 2: The dropout voltage is defined as VIN - VOUT, when VOUT is 4% lower than the value of VOUT when VIN = VOUT + 0.5V.

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RESET OUTPUT

Reset Threshold Accuracy

VOUT falling, (1.7% typical hysteresis)

82.5

%VOUT

IRESET = 100µA

100

RESET Output Low Voltage

VOL

VIN = +1.0V, IRESET = 100µA

400

TA = +25°C

0.001

RESET Output High Leakage

IOH

VRESET = 3.6V,

RESET not asserted

TA = +85°C

0.01

µA

MAX1963

2.2

3.2

5.5

Reset Delay

tRP

From VOUT high to RESET

rising

MAX1976

100

160

THERMAL PROTECTION

Thermal-Shutdown Temperature

TSHDN

+165

°C

Thermal-Shutdown Hysteresis

∆TSHDN

°C

Typical Operating Characteristics

(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = +25°C, unless otherwise noted.)

OUTPUT VOLTAGE ACCURACY

vs. LOAD CURRENT

LOAD CURRENT (mA)

250

200

150

100

-0.1

0.1

0.2

-0.2

300

VOUT = +3.0V

VOUT = +1.5V

VOUT = +0.75V

OUTPUT VOLTAGE ACCURACY

vs. INPUT VOLTAGE

INPUT VOLTAGE (V)

3.0

2.6

2.2

1.8

-0.25

0.25

0.50

-0.50

1.4

3.4

IOUT = 300mA

IOUT = 100mA

IOUT = 0mA

VOUT = 1.5V

OUTPUT VOLTAGE ACCURACY

vs. TEMPERATURE

TEMPERATURE (

°C)

-15

-1.0

-0.5

0.5

1.0

1.5

-1.5

-40

VOUT = +1.5V

IOUT = 0mA, 100mA, 300mA

ELECTRICAL CHARACTERISTICS (continued)

(VIN = (VOUT + 0.5V) or 1.8V, whichever is greater; SHDN = IN, CIN = 1µF, COUT = 4.7µF, TA = -40°C to +85°C, unless otherwise

noted. Typical values are at TA = +25°C.) (Note 1)

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