AS3635B-ZWLT datasheet(7/21 Pages) AMSCO

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AS3635

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

VBAT = 3.6V, TA = +25ºC (unless otherwise specified). CFLASH=22µF, TCHARGE Transformer = TTRN-3822,

QIGBT=RJP4002ANS, ISW=750mA.

Figure 3. Charging Waveform

Figure 4. Charging Time vs. VBAT

VFLASH drop due to

load of measurement

500ms/Div

2.0

2.2

2.4

2.6

2.8

3.0

3.2

3.4

3.6

3.8

4.0

2.4

2.8

3.2

3.6

4.0

VBAT (V)

Figure 5. Charging Waveform VBAT=2.51V

Figure 6. Charging Waveform VBAT=4.2V

500ms/Div

Figure 7. Efficiency vs. VFLASH

Figure 8. Efficiency vs. Charging Time

100

150

200

250

300

350

Voltage on CFLASH (V)

VBAT=3.6V

VBAT=2.7V

VBAT=4.2V

Note: Efficiency is mostly defined

by external components used

and transformer TTRN-3822 is

optimized for size

0.0

0.5

1.0

1.5

2.0

2.5

3.0

3.5

4.0

Charging Time (s)

VBAT=3.6V

VBAT=2.7V

VBAT=4.2V

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