LP3962 datasheet(6/36 Pages) TI

Part #	LP3962

Description	LP3962/LP3965 1.5A Fast Ultra Low Dropout Linear Regulators

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Manufacturer	TI [Texas Instruments]

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LP3962, LP3965

SNVS066H – MAY 2000 – REVISED APRIL 2013

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Electrical Characteristics

LP3962/LP3965 (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: VIN = VO(NOM) + 1V, IL = 10 mA, COUT = 33µF, VSD = VIN-0.3V.

Symbol

Parameter

Conditions

Typ (1)

LP3962/5 (2)

Units

Min

Max

TdON

Turn-on delay

IL = 1.5 A

25

µs

ISD

SD Input Current

VSD = VIN

1

nA

ERROR FLAG COMPARATOR

VT

Threshold

See (7)

10

5

16

%

VTH

Threshold Hysteresis

See (7)

5

2

8

%

VEF(Sat)

Error Flag Saturation

Isink = 100µA

0.02

0.1

V

Td

Flag Reset Delay

1

µs

Ilk

Error Flag Pin Leakage Current

1

nA

Imax

Error Flag Pin Sink Current

VError = 0.5V (over temp.)

1

mA

AC PARAMETERS

VIN = VOUT + 1.5V

60

COUT = 100uF

VOUT = 3.3V

PSRR

Ripple Rejection

dB

VIN = VOUT + 0.3V

40

COUT = 100uF

VOUT = 3.3V

ρn(l/f

Output Noise Density

f = 120Hz

0.8

µV

BW = 10Hz – 100kHz

150

en

Output Noise Voltage (rms)

µV (rms)

BW = 300Hz – 300kHz

100

(7)

Error Flag threshold and hysteresis are specified as percentage of regulated output voltage.

6

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