SC635 datasheet(3/12 Pages) SEMTECH

номер детали	SC635

подробное описание детали	Charge Pump Flash LED Driver

PDF	12 Pages

Scroll/Zoom	100%

производитель	SEMTECH [Semtech Corporation]

домашняя страница	http://www.semtech.com

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 2005SemtechCorp.

www.semtech.com

POWER MANAGEMENT

SC635

Parameter

Symbol

Conditions

Min

Typ

Max

Units

Flash Mode Start-up Time(1)

F-SU

t = 0 when FLASH goes high to I

OUT = 90%

of final value

Flash Mode Pulse Duration

FLASH

3.3V < V

VIN < 4.2V

OUT = 200mA, VVOUT > 2.8V

indefinite

Spotlight Mode Start-up Time(1)

S-SU

t = 0 when CTRL goes high to I

OUT = 90%

of final value

Oscillator Frequency

OSC

Device enabled

250

kHz

Oscillator Frequency Accuracy

OSC

-15

Short-circuit Output Current

Limit

VOUT shorted to GND

465

Input Current Limit

LIMIT

3.3V < V

VIN < 4.2V

1.0

2.1

Over-temperature Protection(1)

150

°C

Hysteresis

Logic Input High Threshold

FLASH, CTRL

1.5

Logic Input Low Threshold

FLASH, CTRL

0.4

Logic Input High Current

FLASH

µA

CTRL

Logic Input High Current

FLASH, CTRL

0.1

2.0

µA

ISET Ripple Voltage(1)

ISET(P-P)

Spotlight mode - I

OUT = 80mA

FLASH mode - I

OUT = 200mA

100

Notes:

(1)Guaranteedbydesign-nottestedinproduction.

ElectricalCharacteristics(Cont.)

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