LM3414HVMRX datasheet(6/30 Pages) TI1

Il numero della parte	LM3414HVMRX

Spiegazioni elettronici	Common Anode-Capable Constant Current Buck LED Driver

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Produttore elettronici	TI1 [Texas Instruments]

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LM3414, LM3414HV

SNVS678F – JUNE 2010 – REVISED NOVEMBER 2015

www.ti.com

Electrical Characteristics (continued)

MIN and MAX limits apply for TJ = –40°C to 125°C unless specified otherwise. VIN = 24 V unless otherwise indicated.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

INTERNAL VOLTAGE REGULATOR

CVCC = 1 µF, No Load to IVCC = 2

4.7

5.4

6

V

mA

VCC

VCC regulator output voltage

(3)

VIN = 4.5 V, 2-mA Load

3.8

4.2

V

MAIN SWITCH

RLX

Resistance across LX and GND

Main Switch Turned ON

1.8

Ω

THERMAL PROTECTION

TSD

Thermal shutdown temperature

TJ Rising

170

°C

Thermal shutdown temperature

TSD-HYS

TJ Falling

10

°C

hysteresis

(3)

VCC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading to the pin.

6.6 Typical Characteristics

All curves taken at VIN = 48 V with configuration in typical application for driving twelve power LEDs with ILED = 1 A shown in

this data sheet. TA = 25°C, unless otherwise specified.

Figure 1. IOUT vs VIN, (4 - 8 LED), LM3414HV

Figure 2. IOUT vs VIN, (10 - 18 LED), LM3414HV

Figure 3. Efficiency vs VIN, (4 - 8 LED), LM3414HV

Figure 4. Efficiency vs VIN, (10 - 18 LED), LM3414HV

6

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