LM3565 datasheet(4/35 Pages) TI

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LM3565

SNVS957 – JANUARY 2013

www.ti.com

ELECTRICAL CHARACTERISTICS

Limits in standard typeface are for TA = +25°C. Limits in boldface type apply over the full operating ambient temperature

range (

−30°C ≤ TA ≤ 85°C). Unless otherwise specified: 2.7V ≤ VIN ≤ 4.4V.

(1) (2)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CURRENT AND VOLTAGE SPECIFICATIONS

VOUT =7.5V

60 mA

≤ ILED ≤

ILED-OUT

LED Current accuracy

(–5%)

(+5%)

930 mA

VLED = 7.2V

VCSH

Current source headroom voltage

300

350

VOVP

Over-voltage protection range

Trip Point (Rising)

9.0

9.5

10.0

ISD

Shutdown current

µA

ISB

Standby current

µA

Operating quiescent current

Part switching

UVLO

Under-voltage lock out

Falling VIN

2.3

2.4

2.5

UVLOHYST UVLO Hysteresis

Rising VIN

100

150

CL Reg value = 00

2.07

2.3

2.53

CL Reg value = 01

2.34

2.6

2.86

ILIM

Peak current limit

CL Reg value = 10

2.61

2.9

3.19

CL Reg value = 11

2.97

3.3

3.63

RDSON_N

NFET pin-to-pin Resistance

RDSON_P

PFET pin-to-pin Resistance

110

OSCILLATOR AND TIMING SPECIFICATIONS (NON-I2C-COMPATIBLE INTERFACE TIMING)

3.8

4.2

fSW

Switching frequency

4.0

MHz

(–5%)

(+5%)

tR-STEP

LED current ramp up and down

µsec

From end of Command to ILED =

tRU

Current ramp up time

1.4

msec

Fullscale

tTORCH-DG

Torch deglitching time

6.3

11.7

msec

ANALOG-TO-DIGITAL (A/D) CONVERTER SPECIFICATIONS

ADCRES

A/D Resolution

Average step size

31.4

VOFF

Offset error

Bits

Gain error

VLED = 8 V

(–2%)

(+2%)

CONTROL INTERFACE VOLTAGE SPECIFICATIONS

Low-level threshold voltage (SCL SDA,

VIL

0.54

ENABLE, TX-MASK, TORCH)

High-level threshold voltage (SCL SDA,

VIH

ENABLE, TX-MASK, TORCH, STROBE

1.26

1.8V)

VOL

Low-level output threshold limit (SDA)

ILOAD = 3 mA

0.4

VIL

Low-level threshold voltage (STROBE 1.2V)

0.36

High-level threshold voltage (STROBE

VIH

0.84

1.2V)

(1)

Min and Max limits are specified by design, test, or statistical analysis. Typical (Typ) numbers are not verified, but do represent the most

likely norm. Unless otherwise specified, conditions for Typical specifications are: VIN = 3.6V and TA = 25°C.

(2)

Switching disabled.

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