SC1462A 查看數據表（PDF） - Semtech Corporation

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SC1462A

High Efficency Charge Pump Doubler

Semtech Corporation 

5+"$ )

POWER MANAGEMENT

Typical Characteristics

T ypi cal Iin v s V in @ T a = 25 Deg . C .

1 80E -6

1 60E -6

1 40E -6

1 20E -6

1 00E -6

80E -6

60E -6

40E -6

20E -6

Io = 0mA

0 00 E + 0

1.0

2.0

3.0

4.0

5.0

6.0

Vin (V)

Typical Iin vs Vin Io = 0mA

2 50E -6

2 00E -6

1 50E -6

T ypi c a l Iin v s T a @ Io = 0 mA

Vin = 5. 5V

Vin = 4. 5V

Vin = 3. 6V

Vin = 2. 5V

Vin = 1. 5V

1 00E -6

50E -6

0 00 E + 0

-4 0

-2 0

0

20

40

60

80

Ta (D eg. C .)

Typical Iin vs Ta Io = 0mA

1 00 %

T yp ic a l E ff ic i e nc y v s Io u t

@ T a = 2 5 D eg . C .

96 %

8 00.0 E-3

7 00.0 E-3

6 00.0 E-3

5 00.0 E-3

Typ ic a l D ro p ou t V ol ta ge v s Io u t

@ Ta = 25 Deg . C.

Vin = 1.5 V

Vin = 2.5 V

Vin = 3.6 V

Vin = 4.5 V

Vin = 5.5 V

4 00.0 E-3

3 00.0 E-3

2 00.0 E-3

1 00.0 E-3

0 00 .0 E + 0

0 00 E + 0

5 E-3

10 E-3

15 E-3

Io u t (A )

20 E-3

25 E-3

30 E-3

Typical Dropout vs Iout

6 00 E-3

T yp ic a l D r opo u t V o lta ge v s T a

5 50 E-3

5 00 E-3

V in = 2 .5 V , Iou t = 1 0mA

V in = 5 .5 V , Iou t = 1 5mA

4 50 E-3

4 00 E-3

3 50 E-3

3 00 E-3

2 50 E-3

2 00 E-3

-4 0

-2 0

0

20

40

60

80

T a (D e g. C .)

Typical Dropout vs Ta

Vout Ripple

100mV/Div.

92 %

88 %

84 %

80 %

3E -3

8E -3

Vin = 5. 5V

Vin = 4. 5V

Vin = 3. 6V

Vin = 2. 5V

Vin = 1. 5V

13E -3

18E -3

Io ut (A )

23E -3

Typical Efficiency vs Iout

 2001 Semtech Corp.

28E -3

Vin = 2.5V

Iout = 8mA

Cin = Cout = Cbucket = 1.0uF

Typical Output Ripple

8

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