LM3530 datasheet(6/50 Pages) TI1

6 / 50 page

t > tPWM_HIGH(MAX)

t < tPWM_HIGH(MIN)

t < tPWM_LOW(MIN)

t > tPWM_LOW(MAX)

SCL

SDIO

Data In

SDIO

Data Out

LM3530

SNVS606L – JUNE 2009 – REVISED DECEMBER 2014

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Electrical Characteristics (continued)

Typical (TYP) limits are for TA = 25°C; minimum (MIN) and maximum (MAX) apply over the full operating ambient

temperature range (

−40°C ≤ TA ≤ 85°C); VIN = 3.6 V, unless otherwise specified.

(1)(2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LOGIC VOLTAGE SPECIFICATIONS (SCL, SDA, PWM, INT)

VIL

Input logic low

2.7 V

≤ VIN ≤ 5.5 V

0.54

VIH

Input logic high

2.7 V

≤ VIN ≤ 5.5 V

1.26

VIN

VOL

Output logic low (SDA, INT)

ILOAD = 3 mA

400

7.6 I

2C-Compatible Timing Requirements (SCL, SDA)(1)

MIN

NOM

MAX

UNIT

SCL (Clock Period)

2.5

µs

Data in setup time to SCL high

100

Data out stable after SCL low

SDA low setup time to SCL low (start)

100

SDA high hold time after SCL High (stop)

100

(1)

SCL and SDA must be glitch-free in order for proper brightness control to be realized.

7.7 Simple Interface Timing

MIN

NOM

MAX

UNIT

tPWM_HIGH

Enable time, PWM pin must be held high

1.5

2.6

tPWM_LOW

Disable time, PWM pin must be held low

1.48

2.69

Figure 1. I2C-Compatible Timing

Figure 2. Simple Enable/Disable Timing

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