LM27961 datasheet(9/16 Pages) TI1

Part #	LM27961

Description	Dual-Display White LED Driver with 3/2x Switched Capacitor Boost

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Manufacturer	TI1 [Texas Instruments]

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RSET (:)

LM27961

www.ti.com

SNVS326 – NOVEMBER 2004

Typical Performance Characteristics (continued)

Unless otherwise specified: VIN = 3.6V; VLEDxA = 3.6V; VLEDxB = 3.6V; ENA = VIN and ENB = GND, or ENA = GND and ENB =

VIN; RSETA = RSETB = 8.35kΩ; CIN, C1, C2 , and CPOUT = 1µF.

Diode Current (DxA)

Input Voltage (Top)

vs. RSETx

and Output Voltage (Bottom) Waveforms

Figure .

Figure 2. Vertical Scale = (100mV/div),

Horizontal Scale = 1µs/div)

ENx Signal (Top)

and Charge Pump Start-Up (Bottom) Waveforms

Figure 3. Vertical Scale = (2V/div),

Horizontal Scale = 100µs/div)

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