LP3923

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SNVS567B – APRIL 2010 – REVISED MAY 2013

LDO1, LDO2 (LILO) Electrical Characteristics (continued)

Unless otherwise noted, if SEL=GND, then VIN=VIN1=BATT=3.6V, if SEL=BATT, then VIN=VIN1=VBUCK, GND = 0V, CV!N1-2

= 10 µF, CLDOx= 1 µF. Note VINMIN is the greater of 3.0V or VOUT +0.5V. Typical values and limits appearing in normal type

apply for TJ = 25°C. Limits appearing in boldface type apply over the entire junction temperature range for operation, TA = TJ

=

−40°C to +125°C.

(1)

Limit

Unit

Symbol

Parameter

Conditions

Typical

s

Min

Max

IOUT

Output Current

VINMIN ≤ VIN ≤ 5.5V

300

mA

Output Current Limit

VOUT = 0V

600

VDO

Dropout Voltage

IOUT =300 mA

(2) (3)

135

180

mV

ΔVOUT

Line Regulation

VINMIN ≤ VIN ≤ 5.5V

2

IOUT = 1 mA

mV

Load Regulation

1 mA

≤ IOUT ≤ 300 mA

5

PSRR

Power Supply Ripple

F = 10 kHz, COUT = 1 µF,

60

dB

Rejection Ratio

VOUT = 3.0V, IOUT = 20 mA

(2)

tSTART-UP

Start-Up Time from Shut-

COUT = 1 µF, IOUT = 300 mA

(2)

35

µs

down

TTransient

Start-Up Transient

COUT = 1 µF, IOUT = 300 mA

(2)

30

mV

Overshoot

(2)

Ensured by design.

(3)

Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This

specification does not apply in cases it implies operation with an input voltage below the 2.5V minimum appearing under Operating

Ratings. For example, this specification does not apply for devices having 1.5V outputs because the specification would imply operation

with an input voltage at or about 1.5V.

LDO3 (D-Type) Electrical Characteristics

Unless otherwise noted, VIN=VIN2=BATT=3.6V, GND = 0V, CV!N1-2 = 10 µF, CLDOx= 1 µF. Note VINMIN is the greater of 3.0V or

VOUT +0.5V. Typical values and limits appearing in normal type apply for TJ = 25°C. Limits appearing in boldface type apply

over the entire junction temperature range for operation, TA = TJ = −40°C to +125°C.

(1)

Limit

Symbol

Parameter

Conditions

Typical

Units

Min

Max

VOUT

Output Voltage Accuracy

IOUT = 1 mA, VOUT = 3.0V

−2

+2

%

−3

+3

Default Output Voltage

3.0

V

IOUT

Output Current

VINMIN ≤ VIN ≤ 5.5V

300

mA

Output Current Limit

VOUT = 0V

600

VDO

Dropout Voltage

IOUT = 300 mA

(2) (3)

135

250

mV

ΔVOUT

Line Regulation

VINMIN ≤ VIN ≤ 5.5V

2

IOUT = 1 mA

mV

Load Regulation

1 mA

≤ IOUT ≤ 300 mA

5

eN

Output Noise Voltage

10 Hz

≤ f ≤ 100 kHz,

35

µVRMS

COUT = 1 µF

(2)

PSRR

Power Supply Ripple Rejection

F = 10 kHz,

Ratio

COUT = 1 µF,

60

dB

IOUT = 20 mA

(2)

tSTART-UP

Start-Up Time from Shut-down

COUT = 1 µF, IOUT = 300 mA

(2)

35

µs

TTransient

Start-Up Transient Overshoot

COUT = 1 µF, IOUT = 300 mA

(2)

30

mV

(1)

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

and cold limits are ensured by correlating the electrical characteristics to process and temperature variations and applying statistical

process control.

(2)

Ensured by design.

(3)

Dropout voltage is the input-to-output voltage difference at which the output voltage is 100 mV below its nominal value. This

specification does not apply in cases it implies operation with an input voltage below the 2.5V minimum appearing under Operating

Ratings. For example, this specification does not apply for devices having 1.5V outputs because the specification would imply operation

with an input voltage at or about 1.5V.

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