ADD5207 Ver la hoja de datos (PDF) - Analog Devices

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componentes Descripción

Fabricante

ADD5207

Four-String, White LED Driver for LCD Backlight Applications

Analog Devices 

ADD5207

Data Sheet

SPECIFICATIONS

STEP-UP SWITCHING REGULATOR SPECIFICATIONS

VIN = 12 V, SHDN = high, TA = −25°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.

Table 1.

Parameter

SUPPLY

Input Voltage Range

BOOST OUTPUT

Output Voltage

SWITCH

On Resistance

Leakage Current

Peak Current Limit

OSCILLATOR

Switching Frequency

Maximum Duty Cycle

SOFT START

Soft Start Time

OVERVOLTAGE PROTECTION

Overvoltage Rising Threshold on OVP Pin

Overvoltage Hysteresis on OVP Pin

Symbol

VIN

VOUT

RDS(ON)

ILKG

ICL

fSW

DMAX

tSS

VOVPR

VOVP_HYS

Test Conditions/Comments Min Typ Max Unit

6

21

V

36

V

VIN = 12 V, ISW = 100 mA

Duty cycle (D) = DMAX

150

300

mΩ

1

µA

1.5

A

RF = 97 kΩ

RF = 97 kΩ

800 1000 1200 kHz

84

90

%

1.1

ms

36.5 39

40

V

0.1 0.7

1.4

V

Rev. A | Page 4 of 16

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