AS3642 datasheet(8/27 Pages) AMSCO

Part #	AS3642

Description	Ultra Small 500mA Inductive White LED Flash Driver

PDF	27 Pages

Scroll/Zoom	100%

Manufacturer	AMSCO [ams AG]

Direct Link	http://www.ams.com

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www.austriamicrosystems.com/AS3642

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AS3642

Datasheet - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s

7 Typical Operating Characteristics

VVIN = 3.7V, TA = +25ºC (unless otherwise specified)

Figure 4. DCDC Efficiency vs. VVIN

Figure 5. Application Efficiency (PLED/PVIN) vs. VVIN

100

2,7

3,1

3,5

3,9

4,3

Input Voltage (V)

IOUT = 50mA

IOUT = 120mA

IOUT = 220mA

IOUT = 320mA

IOUT = 500mA

2,7

3,1

3,5

3,9

4,3

Input Voltage (V)

IOUT = 50mA

IOUT = 120mA

IOUT = 220mA

IOUT = 320mA

IOUT = 500mA

pulseskip is used

for currents above

320mA

Figure 6. ILED Startup (ILED_OUT=300mA)

Figure 7. IVIN Startup (ILED_OUT=300mA)

250µs/Div

Figure 8. ILED Startup (ILED_OUT=51.6mA)

Figure 9. VOUT / ILED_OUT ripple, ILED_OUT = 300mA

50µs/Div

100ns/Div

AS3642 Datasheet(PDF) 8 Page - ams AG

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