LP5922 datasheet(6/24 Pages) TI1

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LP5922

SNVSAG0 – NOVEMBER 2016

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Electrical Characteristics (continued)

VIN = VOUT(NOM) + 0.5 V or 1.3 V, whichever is greater; VEN = 1.2 V, CIN = 22 μF, COUT = 22 μF, OUT connected to 50 Ω to

GND, VFB = 0.5 V, CSS/NR = 0.12 µF, CFF = 0.01 µF, and PG pin pulled up to VIN by 100-kΩ resistor (unless otherwise

noted).

(1)(2)(3)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

(9)

There is a 2-MΩ resistor between EN and ground (pulldown) on the device.

LOGIC INPUT THRESHOLDS

VIL(EN)

EN pin low threshold

VEN falling (↓) until output is OFF

0.35

VIH(EN)

EN pin high threshold

VEN rising (↑) until output is ON

1.2

IEN

Input current at EN pin (9)

VIN = 6 V, VEN = 6 V

µA

PGHTH

PG high threshold (% of

nominal VOUT)

VOUT rising (↑) until PG goes high

94%

PGLTH

PG low threshold (% of

nominal VOUT)

VOUT falling (↓) until PG goes low

90%

VOL(PG)

PG pin low-level output

voltage

VOUT < PGLTH, sink current = 1 mA

400

ILKG(PG)

PG pin leakage current

VOUT > PGHTH, VPG = 6 V

µA

SOFT START

ISS

SS/NR pin charging

current

6.2

µA

THERMAL SHUTDOWN

TSD

Thermal shutdown

temperature

165

°C

ΔTSD

Thermal shutdown

hysteresis

°C

TRANSITION CHARACTERISTICS

ΔVOUT

Line transients

ΔVIN = 0.5 V, VOUT = 2.8 V,

tRISE = tFALL = 5 μs

Load transients

VOUT = 3.3 V, IOUT = 10 mA to 2 A to 10 mA

tRISE = tFALL = 1 V/μs

RAD

Output discharge pull-

down resistance

VEN = 0 V, VIN = 2.3 V

400

(1)

Typically input capacitance placed close to the device is in the same order as output capacitance. See also Input Capacitor, CIN.

6.6 Input and Output Capacitors

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CIN

Input capacitance(1)

µF

COUT

Output capacitance

VOUT ≤ 0.8 V

µF

VOUT > 0.8 V

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