LP8556SQX-E08 datasheet(7/63 Pages) TI1

Part #	LP8556SQX-E08

Description	High-Efficiency LED Backlight Driver for Tablets

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Manufacturer	TI1 [Texas Instruments]

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7

LP8556

www.ti.com

SNVS871I – JULY 2012 – REVISED MARCH 2016

Product Folder Links: LP8556

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(1)

All voltages are with respect to the potential at the GND pins.

(2)

Minimum (MIN) and Maximum (MAX) limits are verified by design, test, or statistical analysis. Typical numbers are for information only.

(3)

Verified by design and not tested in production.

7.5 Electrical Characteristics

Unless otherwise specified: VDD = 12 V, EN / VDDIO = 1.8 V, TA = 25°C

(1) (2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VDDIO

Supply voltage for digital I/Os

1.62

3.6

V

VDD

Input voltage for the internal LDO

2.7

20

V

IDD

Standby supply current

EN / VDDIO = 0 V, LDO disabled,

–30°C

≤ TA ≤ 85°C

1.6

μA

Normal mode supply current

LDO enabled, boost disabled

0.9

1.5

mA

LDO enabled, boost enabled, no load

2.2

3.65

fOSC

Internal oscillator frequency

accuracy

–4%

4%

–30°C

≤ TA ≤ 85°C

–7%

7%

VLDO

LDO output voltage

VDD ≥ 3.1 V

2.95

3.05

3.15

V

2.7 V

≤ VDD < 3.1 V

VDD – 0.05

TTSD

Thermal shutdown threshold

See(3)

150

°C

TTSD_hyst

Thermal shutdown hysteresis

20

°C

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