LP8720

www.ti.com

SNVS575B – JULY 2008 – REVISED MAY 2013

A-Type LDO Electrical Characteristics

Unless otherwise noted, VVBATT = VVINB = VVIN1 = VVIN2 = 3.6V, GND = GNDB = 0V, CVBATT = CVIN1 = CVIN2 = 2.2 µF, CVINB = 10

µF. 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, TJ= -40 to +125°C

(1)

Limit

Parameter

Test Conditions

LDO#

Typ

Units

Min

Max

VOUT

Output Voltage Accuracy

IOUT = 1mA, VOUT = 2.85V

-2%

+2%

2,3

-3%

+3%

ISC

Output Current Limit

VOUT = 0V

2,3

600

mA

VDO

Dropout Voltage

IOUT = IMAX

(2)

2,3

200

400

mV

ΔVOUT

Line Regulation

VOUT + 0.5V ≤ VIN ≤ 4.5V

2,3

1

mV

IOUT = IMAX

Load Regulation

1 mA

≤ IOUT ≤ IMAX

2,3

5

mV

eN

Output Noise Voltage

10Hz

≤ f ≤ 100kHz COUT = 1 µF

(3)

2,3

15

µVRMS

PSRR

Power Supply Ripple

f = 10 kHz, COUT = 1 µF, IOUT = 20

2,3

70

dB

Rejection Ratio

mA(3)

tstartup

Startup Time from Shutdown

COUT = 1 µF, IOUT = IMAX

(3)

2,3

35

µs

VTransient

Startup Transient Overshoot

COUT = 1 µF, IOUT = IMAX

(3)

2,3

30

mV

COUT

External output capacitance

2,3

1.0

0.5

20

µF

for stability

(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)

Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV 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.

(3)

Ensured by design.

D-Type and LO-Type LDO Electrical Characteristics

Unless otherwise noted, VVBATT = VVINB = VVIN1 = VVIN2 = 3.6V, GND = GNDB = 0V, CVBATT = CVIN1 = CVIN2 = 2.2 µF, CVINB = 10

µF. 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, TJ= -40 to +125°C

(1)

Limit

Parameter

Test Conditions

LDO#

Typ

Units

Min

Max

VOUT

Output Voltage Accuracy

IOUT = 1mA, VOUT = 2.85V

-2%

+2%

1,5

-3%

+3%

IOUT = 1mA, VOUT = 1.20V

-2%

+2%

4

-3%

+3%

IOUT = 1mA, VOUT = 2.60V

-3%

+3%

4

-4%

+4%

ISC

Output Current Limit

VOUT = 0V

1,4,5

600

mA

VDO

Dropout Voltage

IOUT = IMAX

(2)

1,4,5

190

400

mV

ΔVOUT

Line Regulation

VOUT + 0.5V ≤ VIN ≤ 4.5V

1,4,5

2

mV

IOUT = IMAX

Load Regulation

1mA

≤ IOUT ≤ IMAX

1,4,5

5

mV

eN

Output Noise Voltage

10Hz

≤ f ≤ 100kHz, COUT = 1 µF

(3)

1,4,5

100

µVRMS

(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)

Dropout voltage is the input-to-output voltage difference at which the output voltage is 100mV 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.

(3)

Ensured by design.

Copyright © 2008–2013, Texas Instruments Incorporated

Submit Documentation Feedback

15

Product Folder Links: LP8720