AW3648CSR datasheet(13/37 Pages) AWINIC

13 / 37 page

AW3648

Jan 2018 V1.4

www.awinic.com.cn

Typical Characteristics (continued)

Ambient temperature is 25°C, input voltage is 3.6 V, HWEN = IN, CIN = COUT = 2×10 µF and L=1 µH, unless

otherwise noted .

ILED (500mA/DIV)

IIN (1A/DIV)

VOUT (2V/DIV)

TIME (500 μs/DIV)

ILED=1010mA

fSW=2Mhz

VLED=3.3V

Fig 33. Ramp Up

VOUT (2V/DIV)

ILED (500mA/DIV)

IIN (1A/DIV)

TIME (500 μs/DIV)

ILED=1010mA

fSW=2Mhz

VLED=3.3V

Fig 34. Ramp Down

1.60

1.64

1.68

1.72

1.76

1.80

1.84

1.88

1.92

1.96

2.00

2.04

2.08

2.12

2.16

2.20

2.5

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

4.3

VIN (V)

ILED=1.5A

fSW=2MHz

VLED=4.5V

ICL=1.9A

Fig 29. Inductor Current Limit vs Input Voltage

1.60

1.64

1.68

1.72

1.76

1.80

1.84

1.88

1.92

1.96

2.00

2.04

2.08

2.12

2.16

2.20

2.5

2.7

2.9

3.1

3.3

3.5

3.7

3.9

4.1

4.3

VIN (V)

ILED=1.5A

fSW=4MHz

VLED=4.5V

ICL=1.9A

Fig 30. Inductor Current Limit vs Input Voltage

1.4

1.6

1.8

2.0

2.2

2.4

2.6

2.8

3.0

2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9

VIN (V)

ILED=1.5A

fSW=2MHz

VLED=4.5V

ICL=2.8A

Fig 31. Inductor Current Limit vs Input Voltage

1.4

1.6

1.8

2.0

2.2

2.4

2.6

2.8

3.0

2.5 2.7 2.9 3.1 3.3 3.5 3.7 3.9 4.1 4.3 4.5 4.7 4.9

VIN (V)

ILED=1.5A

fSW=4MHz

VLED=4.5V

ICL=2.8A

Fig 32. Inductor Current Limit vs Input Voltage

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