LP2953_15 datasheet(6/41 Pages) TI

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LP2952-N, LP2952A, LP2953, LP2953A

SNVS095F – MAY 2004 – REVISED MARCH 2015

www.ti.com

6.7 Electrical Characteristics: All Voltage Options

Limits are assured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.

Unless otherwise specified, MIN (minimum) and MAX (maximum) specifications in apply over the full Operating Temperature

Range and TYP (typical) values apply at TJ = 25°C, VIN = VOUT(NOM) + 1 V, IOUT = 1 mA, COUT = 2.2 μF for 5-V parts and 4.7

μF for 3.3-V parts. FEEDBACK pin is tied to VTAP pin, OUT pin is tied to SENSE pin.

LP2952AI, LP2953AI,

LP2952I, LP2953I,

LP2952AI-3.3, LP2953AI-3.3(1)

LP2952I-3.3, LP2953I-3.3

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

MIN

TYP

MAX

REGULATOR

Output voltage

temperature

See(2)

100

150

ppm/°C

coefficient

TJ = 25°C

0.03%

0.1%

0.03%

0.2%

Output voltage

VIN = VOUT(NOM) + 1 V to 30 V

line regulation

VIN = VOUT(NOM) + 1 V to 30 V

0.03%

0.2%

0.03%

0.4%

TJ = 25°C

0.04%

0.16%

0.04%

0.20%

Output voltage

IOUT = 1 mA to 250 mA

load regulation(3)

IOUT = 0.1 mA to 1 mA

0.04%

0.20%

0.04%

0.30%

TJ = 25°C, IOUT = 1 mA

100

IOUT = 1 mA

150

IOUT = 50 mA

240

300

240

300

IOUT = 50 mA

240

420

240

420

Dropout

VIN – VOUT

voltage(4)

TJ = 25°C, IOUT = 100 mA

310

400

310

400

IOUT = 100 mA

310

520

310

520

TJ = 25°C, IOUT = 250 mA

470

600

470

600

IOUT = 250 mA

470

800

470

800

TJ = 25°C, IOUT = 1 mA

130

170

130

170

μA

IOUT = 1 mA

130

200

130

200

TJ = 25°C, IOUT = 50 mA

1.1

IOUT = 50 mA

1.1

2.5

1.1

2.5

Ground pin

IGND

current(5)

TJ = 25°C, IOUT = 100 mA

4.5

IOUT = 100 mA

4.5

TJ = 25°C, IOUT = 250 mA

IOUT = 250 mA

VIN = VOUT(NOM) − 0.5 V

165

210

165

210

Ground pin

IGND

current at

μA

IOUT = 100 μA

165

240

165

240

dropout

–40°C

≤ TJ ≤ 125°C

Ground pin

IGND

current at

TJ = 25°C, VSHUTDOWN ≤ 1.1 V

105

140

105

140

μA

shutdown(5)

TJ = 25°C, VOUT = 0

380

500

380

500

ILIMIT

Current limit

VOUT = 0

380

530

380

530

Thermal

TJ = 25°C; see

(6)

0.05

0.2

0.05

0.2

%/W

regulation

(1)

Drive SHUTDOWN pin with TTL or CMOS low level to shut off regulator, high level to turn on regulator.

(2)

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

(3)

Load regulation is measured at constant junction temperature using low duty-cycle pulse testing. Two separate tests are performed, one

for the range of IOUT = 100 μA to 1 mA and one for the range of IOUT =1 mA to 250 mA. Changes in output voltage due to heating

effects are covered by the thermal regulation specification.

(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

1-V differential. At very low values of programmed output voltage, the input voltage minimum of 2 V (2.3 V 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 200-mA load pulse at VIN = VOUT(NOM) + 15 V (3-W pulse) for t = 10 ms.

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