LP3923 datasheet(10/37 Pages) TI1

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LP3923

SNVS567B – APRIL 2010 – REVISED MAY 2013

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LDO4 (A-Type) Electrical Characteristics

Unless otherwise noted, VIN=VIN2=BATT=3.6V, GND = 0V, CV!N1-2 = 10 µF, CLDOx= 1 µF, TCXO_EN high. 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

−3

Default Output Voltage

3.0

IOUT

Output Current

VINMIN ≤ VIN ≤ 5.5V

Output Current Limit

VOUT = 0V

400

VDO

Dropout Voltage

IOUT =80 mA

(2) (3)

ΔVOUT

Line Regulation

VINMIN + ≤ VIN ≤ 5.5V, IOUT = 1 mA

Load Regulation

1 mA

≤ IOUT ≤ 80 mA

Output Noise Voltage

10 Hz

≤ f ≤ 100 kHz,

µVRMS

COUT = 1 µF

(2)

PSRR

Power Supply Ripple Rejection

F = 10 kHz,

Ratio

COUT = 1 µF, IOUT = 20 mA

(2)

tSTART-UP

Start-Up Time from Shut-down

COUT = 1 µF, IOUT = 80 mA

(2)

µs

TTransient

Start-Up Transient Overshoot

COUT = 1 µF, IOUT = 80 mA

(2)

(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.

LDO5, LDO6, LDO7 (A-Type) Electrical Characteristics

Unless otherwise noted, VIN=VIN2=BATT=3.6V, GND = 0V, CV!N1-2 = 10 µF, CLDOx= 1 µF, RX_EN, TX_EN high. 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

−3

Default Output Voltage

3.0

IOUT

Output Current

VINMIN ≤ VIN ≤ 5.5V

150

Output Current Limit

VOUT = 0V

400

VDO

Dropout Voltage

IOUT = 150 mA

(2) (3)

100

150

ΔVOUT

Line Regulation

VINMIN ≤ VIN ≤ 5.5V

IOUT = 1 mA

Load Regulation

1 mA

≤ IOUT ≤ 150 mA

Output Noise Voltage

10 Hz

≤ f ≤ 100 kHz,

µVRMS

COUT = 1 µF

(2)

PSRR

Power Supply Ripple Rejection

F = 10 kHz, COUT = 1 µF, IOUT = 20 mA

(2)

Ratio

(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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