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LM27953 Datasheet(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
Part # LM27953
Description  White LED Driver with Four LED Current Sinks and 3/2x Switched Capacitor Boost
PDF  11 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM27953 Datasheet(HTML) 7 Page - National Semiconductor (TI)

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Typical Performance Characteristics Unless otherwise specified: V
IN = 3.6V; VLED = 3.6V; EN = VIN;
RSET = 8.35k
Ω;C
IN,C1,C2 , and CPOUT = 1µF.
(Continued)
Charge Pump Switching Frequency
vs. Input Voltage
Diode Current (Dx)
vs. Headroom Voltage (Dx)
20128012
20128013
Diode Current (Dx)
vs. PWM Duty Cycle (EN)
Diode Current (Dx)
vs. R
SET
20128015
20128016
Input Voltage (Top)
and Output Voltage (Bottom) Waveforms
EN Signal (Top)
and Charge Pump Start-Up (Bottom) Waveforms
20128017
Vertical Scale = (100mV/div),
Horizontal Scale = 1µs/div)
20128018
Vertical Scale = (2V/div),
Horizontal Scale = 100µs/div)
www.national.com
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