LM27964 datasheet(8/22 Pages) TI1

Part #	LM27964

Description	LM27964 White LED Driver System with I2C Compatible Brightness Control

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Manufacturer	TI1 [Texas Instruments]

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LM27964

SNOSAL6D – MAY 2005 – REVISED MAY 2013

www.ti.com

Typical Performance Characteristics (continued)

Unless otherwise specified: VIN = 3.6V; VLEDxA = 3.6V, VLEDxB = 3.6V; RSETA = RSETB = RSETK = 16.9kΩ; C1=C2=1µF , and CIN =

CPOUT = 2.2µF.

BankB Diode Current

Keypad Driver Current

vs

BankB Headroom Voltage

Input Voltage

Figure 8.

Figure 9.

Keypad Driver Current

Keypad Diode Current

vs.

vs

Brightness Register Code

Keypad Headroom Voltage

Figure 10.

Figure 11.

Keypad Driver Current

vs

Keypad RSET Resistance

Figure 12.

8

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