LM3528 datasheet(10/34 Pages) TI1

Numer części	LM3528

Szczegółowy opis	High Efficiency, Multi Display LED Driver

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Producent	TI1 [Texas Instruments]

Strona internetowa	http://www.ti.com

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LM3528

SNVS513B – AUGUST 2008 – REVISED MAY 2013

www.ti.com

Typical Performance Characteristics (continued)

VIN = 3.6V, LEDs are Nichia (NSSW008C), COUT = 1µF (LED Mode), COUT = 2.2µF (OLED Mode), CIN = 1µF, L = TDK

VLF4012AT-100MR79, (RL = 0.3Ω), RSET = 12.1kΩ, UNI = '1', ILED = ISUB + IMAIN, TA = +25°C unless otherwise specified.

Start-Up Waveform (LED Mode)

Start-Up Waveform (OLED Mode)

(2 × 5 LEDs, 20mA per string)

(VOUT = 18V, IOUT = 60mA)

Channel 2: SDA (5V/div)

Channel 1: SDA (5V/div)

Channel 1: VOUT (10V/div)

Channel 2: VOUT (10V/div)

Channel 3: ILED (20mA/div)

Channel 3: IOUT (20mA/div)

Channel 4: IIN (200mA/div)

Time Base: 400µs/div

Figure 29.

Figure 30.

Line Step (LED Mode)

Load Step (OLED Mode)

(2 × 5 LEDs, 20mA per String, COUT = 1µF, VIN from 3V to

(VOUT = 18V, COUT = 2.2µF)

3.6V)

Channel 3: ISUB (5mA/div)

Channel 2: VOUT (AC Coupled, 500mV/div)

Channel 4: IMAIN (5mA/div)

Channel 3: IOUT (20mA/div)

Channel 2: VIN (AC Coupled, 500mV/div)

Time Base: 200µs/div

Time Base: 100µs/div

Figure 31.

Figure 32.

Line Step (OLED Mode)

(VOUT = 18V, COUT = 2.2µF, VIN from 3V to 3.6V)

HWEN Functionality

Channel 2: VOUT (AC Coupled, 100mV/div)

Channel 4: ISUB (20mA/div)

Channel 3: VIN (AC Coupled, 500mV/div)

Channel 3: IMAIN (20mA/div)

Time Base: 200µs/div

Channel 2: HWEN (5V/div)

Time Base: 200ns/div

Figure 33.

Figure 34.

10

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