AS3675 datasheet(8/81 Pages) AMSCO

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AS3675

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

Figure 2. DCDC Step Up Converter: Efficiency of +15V,

Figure 3. Charge Pump: Efficiency vs. VBAT

Step Up to 15V vs. Load Current at VBAT=3.8V

Figure 4. Charge Pump: Battery Current vs. VBAT

Figure 5. Current Sink CURR1 vs. V(CURRx)

Figure 6. Current Sink CURR1 Protection Current

Figure 7. Current Sink CURR3x vs. VBAT

0.010.020.030.040.05

0.06

Lo ad Cu rrent [A]

VOUT=14.2V

VOUT=17.2V

VOUT=22V

VOUT= 14.2V

fclk=550kHz

100

2.8

3.2

3.4

3.6

3.8

4.2

VBAT [V]

ILOAD=305mA

ILOAD=150mA

ILOAD=80mA

ILOAD=40mA

100

200

300

400

500

600

2.8

3.2

3.4

3.6

3.8

4.2

VBat[V]

ILOAD=305mA

ILOAD=150mA

ILOAD=80mA

ILOAD=40mA

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

0.00.5

1.01.5

2.0

VCURR1 [V]

ICURR1=2.4mA

ICURR1=19.2mAm

ICURR1=38.25mA

0,0

0,5

1,0

1,5

2,0

2,5

3,0

0,0

5,0

10,0

15,0

20,0

V(CURR1) [V]

curr_prot1_on=0

curr_prot1_on=1

4.5uA

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

0.0

0.5

1.0

1.5

2.0

VCURR30 [V]

ICURR30=2.4mA

ICURR30=19.2mAm

ICURR30=38.25mA

AS3675 Datasheet(PDF) 8 Page - ams AG

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