LM3533TME-40ASLASHNOPB datasheet(5/63 Pages) TI1

5 / 63 page

LM3533

www.ti.com

SNOSC68C – APRIL 2012 – REVISED SEPTEMBER 2015

6.5 Electrical Characteristics

Unless otherwise specified VIN = 3.6 V; typical limits are for TA = 25°C and minimum and maximum limits apply over the full

operating ambient temperature range (

−40°C ≤ TA ≤ +85°C).

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ISHDN

Shutdown current

2.7 V

≤ VIN ≤ 5.5 V, HWEN = GND

µA

Full-scale current = 20.2 mA

ILED_MIN

Minimum LED current

9.5

µA

Exponential mapping

Thermal shutdown

140

TSD

°C

Hysteresis

BOOST CONVERTER

Output current regulation

2.7 V

≤ VIN ≤ 5.5 V

IHVLED(1/2)

20.2

(HVLED1 or HVLED2)

full-scale current = 20.2mA, brightness code = 0xFF

HVLED1 to HVLED2

Both current sinks are assigned

IMATCH_HV

2.7 V

≤ VIN ≤ 5.5 V

–2%

matching (1)

to Control Bank A

Regulated current sink

VREG_CS

400

headroom voltage

Minimum current sink

ILED = 95% of nominal

VHR_HV

headroom voltage for

190

250

full-scale current = 20.2 mA

HVLED current sinks

NMOS switch on

RDSON

ISW = 500 mA

0.3

Ω

resistance

ICL_BOOST

NMOS switch current limit

VIN = 3.6 V

880

1000

1120

ON threshold, 2.7 V

≤ VIN ≤ 5.5 V

Output overvoltage

OVP select bits = 11

VOVP

protection

Hysteresis

Boost frequency select bit = 0

450

500

550

ƒSW

Switching frequency

2.7 V

≤ VIN ≤ 5.5 V

kHz

Boost frequency select bit = 1

900

1000

1100

DMAX

Maximum duty cycle

94%

CHARGE PUMP

ILVLED(1/2/3/ Output current regulation

2.7 V

≤ VIN ≤ 5.5 V, full-scale current = 20.2 mA

20.2

4/5)

(low-voltage current sinks) brightness code = 0xFF

LVLED current sink

IMATCH_LV

2.7 V

≤ VIN ≤ 5.5 V

–2%

matching (2)

Minimum current sink

VHR_LV

headroom voltage for

ILED = 95% of nominal, full-scale current = 20.2 mA

110

LVLED current sinks

Threshold for gain

VGTH

VLVLED falling

110

transition

1× gain

180

350

3 V

≤ VIN ≤ 5.5 V,

ICL_PUMP

Charge-pump current limit

output referred

2× gain

240

Charge-pump output

ROUT

1× gain

1.1

Ω

resistance

HWEN INPUT

Logic low

0.4

VHWEN

Logic thresholds

Logic high

1.2

VIN

PWM INPUT

VPWM_L

Input logic low

2.7 V

≤ VIN ≤ 5.5 V

400

VPWM_H

Input logic high

2.7 V

≤ VIN ≤ 5.5 V

1.25

VIN

(1)

LED current sink matching between HVLED1 and HVLED2 is given by taking the difference between either (IHVLED1 or IHVLED2) and

the average current between the two, and dividing by the average current between the two. This simplifies to (IHVLED1 (or IHVLED2) –

IHVLED(AVE))/(IHVLED(AVE)) × 100. In this test, both HVLED1 and HVLED2 are assigned to Bank A.

(2)

LED current sink matching in the low-voltage current sinks (LVLED1 through LVLED5) is given as the maximum matching value

between any two current sinks, where the matching between any two low voltage current sinks (X and Y) is given as (ILVLEDX (or

ILVLEDY) – IAVE(X-Y))/(IAVE(X-Y)) × 100. In this test all LVLED current sinks are assigned to Bank C.

Submit Documentation Feedback

Product Folder Links: LM3533

LM3533TME-40A/NOPB Datasheet(PDF) 5 Page - Texas Instruments

LM3533TME-40A/NOPB Datasheet(HTML) 5 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 50 51 52 53 54 55 56 57 58 59 60 61 62 63

Datasheet Download

Link URL