5

LP8900

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SNVS542E – MAY 2008 – REVISED JUNE 2016

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Copyright © 2008–2016, Texas Instruments Incorporated

(1)

All limits are specified. All electrical characteristics having room-temperature limits are tested during production at TJ = 25°C or

correlated using Statistical Quality Control methods. Operation over the temperature specification is ensured by correlating the electrical

characteristics to process and temperature variations and applying statistical process control.

(2)

The minimum input voltage = VOUT(NOM) + 0.5 V or 1.8 V, whichever is greater.

(3)

Dropout voltage is voltage difference between input and output at which the output voltage drops to 100 mV below its nominal value.

This parameter is only specified for output voltages above 1.8 V.

(4)

The device maintains the regulated output voltage without a load.

(5)

Short circuit current is measured with VOUT pulled to 0 V.

(6)

This electrical specification is ensured by design.

(7)

EN Pin has an internal 3-M

Ω typical, resistor connected to GND.

7.5 Electrical Characteristics

Unless otherwise noted, VEN = 1.2 V, VIN = VOUT + 0.5 V, or 1.8 V, whichever is higher (where VOUT is the higher of VOUT1 and

VOUT2), CIN = COUT = 1 µF, and IOUT = 1 mA. Typical values apply for TA = 25°C; minimum and maximum values apply over the

full junction temperature range for operation,

−40 to +125°C, unless otherwise specified.

(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIN

Input voltage

TA = 25°C, see

(2)

1.8

5.5

V

ΔVOUT

Output voltage tolerance

VIN = VOUT(NOM) + 0.5 V to 5.5 V

ILOAD = 1 mA

1%

1%

VIN = 1.8 V to 5.5 V

ILOAD = 1 mA, VOUT = 1.2 V

–2.25%

2.25%

Line regulation error

VIN = VOUT(NOM) + 0.5 V to 5.5 V

IOUT = 1 mA

0.05

%/V

Load regulation error

IOUT = 1 mA to 200 mA

4

9

mV

VDO

Dropout voltage(3)

IOUT = 200 mA

VOUT = 3.6 V

55

82

mV

VOUT = 2.8 V

110

164

VOUT = 1.8 V

185

260

ILOAD

Load current

TA = 25°C, see

(4)

0

mA

See(4)

200

IQ

Quiescent current

VEN1 = 1.2 V, VEN2 = 0 V, IOUT = 0 mA

48

120

µA

VEN1 = 1.2 V, VEN2 = 1.2 V, IOUT = 0 mA

85

200

VEN1 = 1.2 V, VEN2 = 1.2 V, IOUT = 200 mA

210

VEN ≤ 0.4 V

0.003

1

ISC

Short-circuit current limit

VIN = 3.6 V

(5)

600

900

mA

PSRR

Power supply rejection

ratio(6)

ƒ = 1 kHz, IOUT = 200 mA

75

dB

ƒ = 10 kHz, IOUT = 200 mA

65

ƒ = 100 kHz, IOUT = 200 mA

45

ƒ = 1 MHz, IOUT = 200 mA

30

en

Output noise voltage(6)

BW = 10 Hz to 100

kHz,

VIN = 4.2 V, COUT = 1

µF

IOUT = 0 mA

6

µVRMS

IOUT = 1 mA

10

IOUT = 200 mA

6

TSHUTDOWN

Thermal shutdown

Temperature

155

°C

Hysteresis

15

ENABLE CONTROL CHARACTERISTICS

IEN

Maximum input current at

EN input(7)

VEN = 0 V, VIN = 5.5 V

0.003

µA

VEN = VIN = 5.5 V

4

VIL

Low input threshold

VIN = 1.8 V to 5.5 V

0.4

V

VIH

High input threshold

VIN = 1.8 V to 5.5 V

1.2

V