LP2950

http://onsemi.com

4

otherwise noted.)

Characteristic

Unit

Max

Typ

Min

Symbol

Line Regulation (Vin = VO(nom) +1.0 V to 30 V) [Note 2]

Regline

%

LP2950C–XX/LP2951C/LP2951C–XX

–

0.08

0.20

LP2950AC–XX/LP2951AC/LP2951AC–XX

–

0.04

0.10

Load Regulation (IO = 100 µA to 100 mA)

Regload

%

LP2950C–XX/LP2951C/LP2951C–XX

–

0.13

0.20

LP2950AC–XX/LP2951AC/LP2951AC–XX

–

0.05

0.10

Dropout Voltage

VI – VO

mV

IO = 100 µA

–

30

80

IO = 100 mA

–

350

450

Supply Bias Current

ICC

IO = 100 µA

–

93

120

µA

IO = 100 mA

–

4.0

12

mA

Dropout Supply Bias Current (Vin = VO(nom) – 0.5 V,

IO = 100 µA) [Note 2]

ICCdropout

–

110

170

µA

Current Limit (VO Shorted to Ground)

ILimit

–

220

300

mA

Thermal Regulation

Regthermal

–

0.05

0.20

%/W

Output Noise Voltage (10 Hz to 100 kHz) [Note 3]

Vn

µVrms

CL = 1.0 µF

–

126

–

CL = 100 µF

–

56

–

LP2951A/LP2951AC ONLY

Reference Voltage (TJ = 25°C)

Vref

V

LP2951C/LP2951C–XX

1.210

1.235

1.260

LP2951AC/LP2951AC–XX

1.220

1.235

1.250

Reference Voltage (TJ = – 40 to +125°C)

Vref

V

LP2951C/LP2951C–XX

1.200

–

1.270

LP2951AC/LP2951AC–XX

1.200

–

1.260

Reference Voltage (TJ = – 40 to +125°C)

Vref

V

IO = 100 µA to 100 mA, Vin = 23 to 30 V

LP2951C/LP2951C–XX

1.185

–

1.285

LP2951AC/LP2951AC–XX

1.190

–

1.270

Feedback Pin Bias Current

IFB

–

15

40

nA

ERROR COMPARATOR

Output Leakage Current (VOH = 30 V)

Ilkg

–

0.01

1.0

µA

Output Low Voltage (Vin = 4.5 V, IOL = 400 µA)

VOL

–

150

250

mV

Upper Threshold Voltage (Vin = 6.0 V)

Vthu

40

45

–

mV

Lower Threshold Voltage (Vin = 6.0 V)

Vthl

–

60

95

mV

Hysteresis (Vin = 6.0 V)

Vhy

–

15

–

mV

SHUTDOWN INPUT

Input Logic Voltage

Vshtdn

V

Logic “0” (Regulator “On”)

0

–

0.7

Logic “1” (Regulator “Off”)

2.0

–

30

Shutdown Pin Input Current

Ishtdn

µA

Vshtdn = 2.4 V

–

35

50

Vshtdn = 30 V

–

450

600

Regulator Output Current in Shutdown Mode

Ioff

–

3.0

10

µA

(Vin = 30 V, Vshtdn = 2.0 V, VO = 0, Pin 6 Connected to Pin 7)

NOTES: 1. Low duty pulse techniques are used during test to maintain junction temperature as close to ambient as possible.

2. VO(nom) is the part number voltage option.

3. Noise tests on the LP2951 are made with a 0.01

µF capacitor connected across Pins 7 and 1.