LP5922 datasheet(5/24 Pages) TI1

5 / 24 page

LP5922

www.ti.com

SNVSAG0 – NOVEMBER 2016

Product Folder Links: LP5922

Submit Documentation Feedback

(1)

All voltages are with respect to the GND pin.

(2)

Minimum and maximum limits are design targeted limits over the junction temperature (TJ) range of –40°C to +125°C, unless otherwise

stated. Typical values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only.

(3)

CIN, COUT: Low-ESR surface-mount-ceramic capacitors (MLCCs) used in setting electrical characteristics.

(4)

Dropout voltage is the voltage difference between the input and the output at which the FB voltage drops to 97% of its nominal value.

(5)

Short-circuit current (ISC) is equivalent to current limit. To minimize thermal effects during testing, ISC is measured with VOUT pulled to

100 mV below its nominal voltage.

(6)

Ground current is defined here as the total current flowing to ground as a result of all voltages applied to the device

IGND = ( (IIN – IOUT) + IEN + ILKG(PG))

(7)

Ground current in shutdown mode, IGND(SD), does NOT include current from PG pin.

(8)

This specification is verified by design.

6.5 Electrical Characteristics

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

SUPPLY VOLTAGE

VIN

Input voltage range

1.3

UVLO

Undervoltage lock-out

threshold

VIN Rising (↑) until output is ON

1.2

1.25

ΔUVLO

UVLO hysteresis

VIN Falling (↓) from UVLO threshold until output is

OFF

160

OUTPUT VOLTAGE AND REGULATION

VOUT

Output voltage range

0.5

ΔVOUT

Line regulation

IOUT = 5 mA, 1.3 V ≤ VIN ≤ 6 V

0.02

%/V

Load regulation

5 mA

≤ IOUT ≤ 2 A

0.1

%/A

VDO

Dropout voltage(4)

VIN = 1.4 V, IOUT = 2 A

220

400

VIN = 2.5 V, IOUT = 2 A

100

180

VIN = 5.3 V, IOUT = 2 A

160

VFB

FB voltage

IOUT = 5 mA to 2 A

492.5

500

507.5

IFB

FB pin input current

VFB = 0.5 V

–100

100

CURRENT LEVELS

Maximum load current

VIN ≥ 1.3 V

ISC

Short-circuit current limit(5)

2.2

3.8

IGND

Ground-current minimum

load(6)

VIN = 6 V, IOUT = 0 mA

0.7

Ground-current maximum

load(6)

VIN = 1.3 V, IOUT = 2 A

IGND(SD)

Shutdown current(7)

VIN = 6 V, VEN = 0 V, VPG = 0 V

0.1

µA

VIN to VOUT RIPPLE REJECTION

(8)

PSRR

Power-supply rejection

ratio

VIN ≥ 1.4 V, ƒ = 1 kHz, IOUT = 2 A

VIN ≥ 1.4 V, ƒ = 10 kHz, IOUT = 2 A

VIN ≥ 1.4 V, ƒ = 100 kHz, IOUT = 2 A

VIN ≥ 1.4 V, ƒ = 1 MHz, IOUT = 2 A

OUTPUT NOISE VOLTAGE

Noise voltage(8)

VIN= 2.5 V, VOUT= 1.8 V

BW = 10 Hz to 100 kHz

µVRMS

LP5922 Datasheet(PDF) 5 Page - Texas Instruments

LP5922 Datasheet(HTML) 5 Page - Texas Instruments

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

Datasheet Download

Link URL