300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR

AP2128

Data Sheet

8

Sept. 2010 Rev. 2.0

BCD Semiconductor Manufacturing Limited

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Output Voltage

VOUT

VIN=VOUT+1V

1mA

≤IOUT≤300mA

98%

×

VOUT

102%

×

VOUT

V

Input Voltage

VIN

2.5

6

V

Maximum Output Current

IOUT(MAX)

VIN-VOUT=1V,

VOUT=98%×VOUT

300

400

mA

Current Limit

ILIMIT

VIN-VOUT=1V

450

mA

Load Regulation

∆VOUT

/(

∆IOUT*VOUT)

VIN-VOUT=1V,

1mA

≤IOUT≤300mA

0.6

%/A

Line Regulation

∆VOUT

/(

∆VIN*VOUT)

VOUT+0.5V≤VIN≤6V,

IOUT=30mA

0.06

%/V

Dropout Voltage

VDROP

VOUT=2.5V, 2.8V, 3.0V, 3.3V,

3.9V, 4.2V, IOUT=300mA

170

300

mV

VOUT=4.75V and 5.2V,

IOUT=300mA

140

300

Quiescent Current

IQ

VIN=VOUT+1V, IOUT=0mA

60

90

µA

Standby Current

ISTD

VIN=VOUT+1V,

VSHUTDOWN in off mode

0.1

1.0

µA

Power Supply

Rejection Ratio

PSRR

AP2128-2.5V to

4.2V, Ripple

1Vp-p

VIN=VOUT+1V

f=100Hz

68

dB

f=1KHz

68

f=10KHz

54

AP2128-4.75V ,

Ripple 0.5Vp-p

VIN=VOUT+1V

f=100Hz

63

f=1KHz

63

f=10KHz

45

AP2128-5.2V ,

Ripple 0.5Vp-p

VIN=6V

f=100Hz

63

f=1KHz

63

f=10KHz

45

Output Voltage

Temperature Coefficient

(

∆VOUT/VOUT)

/

∆T

IOUT=30mA, -40oC≤TA≤85oC

±100

ppm/oC

Short Current Limit

ISHORT

VOUT=0V

50

mA

(AP2128-2.5V/2.8V/3.0V/3.3V/3.9V/4.2V/4.75V, VIN=VOUT+1V; AP2128-5.2V, VIN=6V, CIN=1µF, COUT=1µF, Bold type-

face applies over -40oC

≤TA≤85oC, unless otherwise specified.)

Electrical Characteristics (Continued)