LP85571 datasheet(6/49 Pages) TI2

6 / 49 page

LP8557, LP85571

SNVSA15B – DECEMBER 2013 – REVISED DECEMBER 2015

www.ti.com

7.8 PWM Interface Characteristics (PWM Pin)

See

(1)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ƒPWM

PWM frequency(2)

25000

tMIN_ON

Minimum pulse ON time(2)

µs

tMIN_OFF

Minimum pulse OFF time(2)

µs

Turnon delay from standby to backlight

PWM pin goes from low to

tON

on(2)

switching.

Turnoff delay from backlight off to

PWM pin goes from switching to

tSTBY

standby(2)

low.

ƒIN < 2.4 kHz

ƒIN < 4.8 kHz

PWMRES

PWM input resolution(2)

ƒIN < 9.6 kHz

bits

ƒIN < 19.5 kHz

ƒIN < 25 kHz

(1)

Minimum (Min) and Maximum (Max) limits are specified by design, test, or statistical analysis.

(2)

Verified by design and not tested in production.

7.9 Logic Interface Characteristics

(PWM, FSET/SDA, ISET/SCL Pins)

Limits apply over the full operating ambient temperature range –30°C

≤ TA ≤ 85°C

(1).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

VIL

Input low level

0.4

VIH

Input high level

1.44

Input current

–1

µA

VOL

Output low level

ISDA = 3 mA

0.5

Output leakage

VSDA = 2.8 V

µA

(1)

Minimum (Min) and Maximum (Max) limits are specified by design, test, or statistical analysis.

Submit Documentation Feedback

Product Folder Links: LP8557 LP85571

LP85571 数据表(PDF) 6 Page - Texas Instruments

LP85571 数据表(HTML) 6 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 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49

数据表下载