LP2960

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SNVS112C – APRIL 1999 – REVISED APRIL 2013

Electrical Characteristics (continued)

Limits in standard typeface are for TJ = 25°C, and limits in boldface type apply over the full operating temperature range.

Unless otherwise specified: CIN = 4.7 μF, VIN = VO(NOM) + 1V, IL = 1 mA, COUT = 10 μF for 5V parts or COUT = 22 μF for 3.3V

parts, Feedback pin is tied to VTAP pin, Output pin is tied to Sense pin, VS/D = 2V.

LP2960AI(1)

LP2960I(1)

Symbol

Parameter

Conditions

Typ

Units

Min

Max

Min

Max

VIN − VO

30

30

IL = 1 mA

12

50

50

250

250

IL = 100 mA

180

350

350

Dropout Voltage(4)

mV

350

350

IL = 200 mA

260

450

450

600

600

IL = 500 mA

470

800

800

IGND

600

600

IL = 1 mA

450

μA

750

750

4.0

4.0

IL = 100 mA

2.6

5.0

5.0

Ground Pin Current(5)

8

8

IL = 200 mA

2.5

mA

10

10

35

35

IL = 500 mA

21

40

40

IGND

Ground Pin Current at

VIN = VO(NOM) − 0.5V

3

3

1.8

mA

Dropout(5)

IL = 100 μA

5

5

Ground Pin Current at

VSD ≤ 1.1V

300

400

400

μA

Shutdown(5)

ILIMIT

1500

1500

Current Limit

RL = 0.5Ω

1000

mA

1600

1600

Thermal Regulation

See(6)

0.05

0.2

0.2

%/W

en

COUT = 10 μF

300

Output Noise Voltage

μV

@ IL = 100 mA

COUT = 47 μF

210

RMS

(10 Hz–100kHz)

COUT = 47 μF

(7)

130

VREF

1.220

1.250

1.210

1.260

Reference Voltage

1.235

V

1.210

1.265

1.195

1.275

Reference Voltage

0.1

0.2

See(8)

0.05

%

Line Regulation

0.30

0.4

Reference Voltage

0.6

1.2

IREF = 0–200 μA

0.45

%

Load Regulation

0.9

1.5

Reference Voltage

See(9)

20

ppm/°C

Temperature Coefficient

IB(FB)

Feedback Pin Bias

−50

−50

−20

nA

Current

−70

−70

(4)

Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below the value measured with a

1V differential. At very low values of programmed output voltage, the input voltage minimum of 2V (2.3V over temperature) must be

observed.

(5)

Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the ground pin current,

output load current, and current through the external resistive divider (if used).

(6)

Thermal regulation is the change in output voltage at a time T after a change in power dissipation, excluding load or line regulation

effects. Specifications are for a 400 mA load pulse at VIN = VO(NOM) + 15V (6W pulse) for T = 10 ms.

(7)

Connect a 0.1

μF capacitor from the output to the feedback pin.

(8)

Two separate tests are performed for reference voltage line regulation, one covering 2.5V

≤ VIN ≤ VO(NOM) + 1V and the other test for

VO(NOM) + 1V ≤ VIN ≤ 30V.

(9)

Output or reference voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range.

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