13

Dec. 2012 Rev. 2. 6

BCD Semiconductor Manufacturing Limited

HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR

AP2121

Data Sheet

Parameter

Symbol

Conditions

Min

Typ

Max

Unit

Output Voltage

VOUT

VIN=3.8V

1mA

≤IOUT≤30mA

2.744

2.8

2.856

V

Input Voltage

VIN

6V

Output Current

IOUT

VIN-VOUT=1V

200

mA

Load Regulation

VRLOAD

VIN=3.8V

1mA

≤IOUT≤80mA

12

40

mV

Line Regulation

VRLINE

3.3V

≤VIN≤6V

IOUT=30mA

416

mV

Dropout Voltage

VDROP

IOUT=10mA

20

40

mV

IOUT=100mA

150

300

IOUT=150mA

200

400

IOUT=200mA

250

500

Quiescent Current

IQ

VIN=3.8V, IOUT=0mA

25

50

μA

Standby Current

ISTD

VIN=3.8V

VCE in OFF mode

0.1

1

μA

Power Supply

Rejection Ratio

PSRR

Ripple 0.5Vp-p, f=1kHz

VIN=3.8V

70

dB

Output Voltage

Temperature Coefficient

ΔVOUT/ΔT

IOUT=30mA

±280

μV/oC

(

ΔVOUT/VOUT)/ΔT

±100

ppm/oC

Short Current Limit

ILIMIT

VOUT=0V

50

mA

RMS Output Noise

VNOISE

TA=25oC

10Hz

≤f≤100kHz

30

μVrms

CE "High" Voltage

CE input voltage "High"

1.5

V

CE "Low" Voltage

CE input voltage "Low"

0.25

V

CE Pull-down Resistance

RPD

2.5

5

10

M

Ω

Thermal Resistance

(Junction to Case)

θJC

SOT-23-3

74

oC/W

SOT-23-5

74

CSP-4

5

(VIN=3.8V, TJ=25oC, CIN=1μF, COUT=1μF, Bold typeface applies over -40oC≤TJ≤85oC, unless otherwise specified.)

Electrical Characteristics (Continued)

AP2121-2.8 Electrical Characteristics