LM3532 datasheet(6/52 Pages) TI2

6 / 52 page

LM3532

SNVS653E – JULY 2011 – REVISED AUGUST 2015

www.ti.com

Electrical Characteristics (continued)

Minimum and maximum limits apply over the full operating ambient temperature range (

−40°C ≤ TA ≤ +85°C), typical limits are

for TA = 25°C, and VIN = 3.6 V, unless otherwise specified.

(1)(2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

LOGIC INPUTS/OUTPUTS (PWM1, PWM2, HWEN, SCL, SDA, INT)

VIL

Input logic low

2.7 V

≤ VIN ≤ 5.5 V

0.4

VIH

Input logic high

2.7 V

≤ VIN ≤ 5.5 V

1.2

VIN

VOL

Output logic low (SCL, INT)

2.7 V

≤ VIN ≤ 5.5 V, ILOAD = 3 mA

0.4

PWM input internal pulldown

RPWM

100

Ω

resistance (PWM1, PWM2)

AMBIENT LIGHT SENSOR INPUTS (ALS1, ALS2)

ALS1, ALS2 Resistor Select

2.44

≤ VIN ≤ 5.5 V

RALS1,

ALS pin internal pulldown resistors

Ω

RALS2

ALS1, ALS2 Resistor Select

2.29

2.59

≤ VIN ≤ 5.5 V

2.7 V

≤ VIN ≤ 5.5 V

Ambient light sensor reference

VALS_REF

voltage

2.7 V

≤ VIN ≤ 5.5 V

1.94

2.06

2.7 V

≤ VIN ≤ 5.5 V

2.5

ALS input offset voltage

VOS

(Code 0-to-1 transition – VLSB)

2.7 V

≤ VIN ≤ 5.5 V

0.8

4.2

tCONV

Conversion time

154

µs

LSB

ADC resolution

2.7V

≤ VIN ≤ 5.5V

7.84

6.6 I

2C-Compatible Timing Specifications (SCL, SDA)

See

(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.

6.7 Switching Characteristics

over operating free-air temperature range (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

2.7 V

≤ VIN ≤ 5.5 V

500

ƒSW

Switching frequency

kHz

2.7 V

≤ VIN ≤ 5.5 V

450

550

−40°C ≤ TA ≤ 85°C

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