LP8556 datasheet(7/67 Pages) TI2

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LP8556

www.ti.com

SNVS871M – JULY 2012 – REVISED JUNE 2020

Product Folder Links: LP8556

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(1)

For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report (SPRA953).

7.4 Thermal Information

THERMAL METRIC(1)

LP8556

UNIT

YFQ (DSBGA)

RTW (WQFN)

20 PINS

24 PINS

RθJA

Junction-to-ambient thermal resistance

66.2

35.0

°C/W

RθJC(top)

Junction-to-case (top) thermal resistance

0.5

32.2

°C/W

RθJB

Junction-to-board thermal resistance

15.1

13.7

°C/W

ψJT

Junction-to-top characterization parameter

1.9

0.3

°C/W

ψJB

Junction-to-board characterization parameter

15.0

13.8

°C/W

RθJC(bot)

Junction-to-case (bottom) thermal resistance

n/a

3.3

°C/W

(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

VDD

Input voltage for the internal LDO

2.7

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

LDO enabled, boost enabled, no load

2.2

3.65

fOSC

Internal oscillator frequency

accuracy

–4%

–30°C

≤ TA ≤ 85°C

–7%

VLDO

LDO output voltage

VDD ≥ 3.1 V

2.95

3.05

3.15

2.7 V

≤ VDD < 3.1 V

VDD – 0.05

TTSD

Thermal shutdown threshold

See(3)

150

°C

TTSD_hyst

Thermal shutdown hysteresis

°C

LP8556 Datasheet(PDF) 7 Page - Texas Instruments

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