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LM2754SQX Fiches technique(PDF) 7 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor.
No de pièce LM2754SQX
Description  800mA Switched Capacitor Flash LED Driver with Time-Out Protection
Download  11 Pages
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Fabricant  NSC [National Semiconductor (TI)]
Site Internet  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM2754SQX Fiches technique(HTML) 7 Page - National Semiconductor (TI)

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Typical Performance Characteristics Unless otherwise specified: T
A = 25˚C, VDx = 1V, V(IN, INSW) =
3.6V, V
EN =VIN,VT/F =VTX =VSEL = 0V, CIN =C1 =C2 = 2.2µF, COUT = 4.7µF. Capacitors are low-ESR multi-layer ceramic
capacitors (MLCC’s). (Continued)
Battery Ripple, Gain = 1.5x
Battery Ripple, Gain = 2x
20202814
VIN = Li-Ion Battery at 3.7V, Load = 400mA, LED = PWF1
CH1 (MID-TOP): VOUT; Scale: 20mV/Div, AC Coupled
CH2 (MID-BOTTOM): VIN; Scale: 50mV/Div, AC Coupled
CH3 (TOP): VIN; Scale: 1V/Div, DC Coupled
CH4 (BOTTOM): IIN; Scale: 500mA/Div
Time scale: 1µs/Div
20202815
VIN = Li-Ion Battery at 3.7V, Load = 400mA, LED = PWF1
CH1 (MID-TOP): VOUT; Scale: 20mV/Div, AC Coupled
CH2 (MID-BOTTOM): VIN; Scale: 50mV/Div, AC Coupled
CH3 (TOP): VIN; Scale: 1V/Div, DC Coupled
CH4 (BOTTOM): IIN; Scale: 500mA/Div
Time scale: 1µs/Div
Startup and Shutdown Response
Torch Mode (400mA)
20202816
VIN = 3.6V, Load = 400mA, LED = PWF1
CH1 (TOP): VOUT; Scale: 1V/Div, DC Coupled
CH4 (MIDDLE): IIN; Scale: 200mA/Div
CH3 (BOTTOM): IOUT; Scale: 200mA/Div
Time scale: 100ms/Div
www.national.com
7


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