LM3530 datasheet(5/50 Pages) TI1

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LM3530

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SNVS606L – JUNE 2009 – REVISED DECEMBER 2014

7.5 Electrical Characteristics

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

ILED

Output current regulation

2.7 V

≥ VIN ≥ 5.5 V, Full-scale current = 19

17.11

18.6

20.08

mA, BRT Code = 0x7F, ALS Select Bit = 0,

I2C Enable = 1

VREG_CS

Regulated current sink

400

headroom voltage

VHR

Current sink minimum

ILED = 95% of nominal

200

headroom voltage

RDSON

NMOS switch on resistance

ISW = 100 mA

0.25

Ω

ICL

NMOS switch current limit

2.7 V

≤ VIN ≤ 5.5 V

739

839

936

ON Threshold, 2.7 V

≤ VIN ≤ 5.5 40-V

version

Output overvoltage

VOVP

25-V

protection

23.6

24.6

version

Hysteresis

fSW

Switching frequency

2.7 V

≤ VIN ≤ 5.5 V

450

500

550

kHz

DMAX

Maximum duty cycle

94%

DMIN

Minimum duty cycle

10%

Quiescent current, device

VHWEN = VIN

490

600

µA

not switching

IQ_SW

Switching supply current

ILED = 19 mA, VOUT = 36 V

1.35

ISHDN

Shutdown current

VHWEN = GND, 2.7 V ≥ VIN ≥ 5.5 V

µA

ILED_MIN

Minimum LED current

Full-scale current = 19 mA setting

9.5

µA

BRT = 0x01

VALS

Ambient light sensor

2.7 V

≥ VIN ≥ 5.5 V

(3)

0.97

1.03

reference voltage

Logic thresholds - logic low

0.4

VHWEN

Logic thresholds - logic high

1.2

VIN

TSD

Thermal shutdown

140

°C

Hysteresis

12.77

13.531

14.29

8.504

9.011

9.518

5.107

5.411

5.715

2.143

2.271

2.399

1.836

1.946

2.055

1.713

1.815

1.917

1.510

1.6

1.69

RALS1,

ALS input internal pull-down

2.7 V

≥ VIN ≥ 5.5 V

1.074

1.138

1.202

Ω

RALS2

resistors

0.991

1.050

1.109

0.954

1.011

1.068

0.888

0.941

0.994

0.717

0.759

0.802

0.679

0.719

0.760

0.661

0.700

0.740

0.629

0.666

0.704

(1)

All voltages are with respect to the potential at the GND pin.

(2)

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

likely norm.

(3)

The ALS voltage specification is the maximum trip threshold for the ALS zone boundary (Code 0xFF). Due to random offsets and the

mechanism for which the hysteresis voltage varies, it is recommended that only Codes 0x04 and above be used for Zone Boundary

Thresholds. See Zone Boundary Trip Points and Hysteresis and Minimum Zone Boundary Settings sections.

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