MCP1256 データシートの表示（PDF） - Microchip Technology

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MCP1256

Regulated 3.3V, Low-Ripple Charge Pump with Low-Operating Current SLEEP Mode or BYPASS Mode

Microchip Technology 

MCP1256/7/8/9

TYPICAL PERFORMANCE CURVES (CONTINUED)

NOTE: Unless otherwise indicated, CIN = COUT = 10 μF, C1 = C2 = 1 μF, IOUT = 10 mA, and TA= +25°C.

2.0

1.8

1.6

1.4

1.2

1.0

1.8 2.1 2.4 2.7 3.0 3.3 3.6

Input Voltage (V)

FIGURE 2-13:

BYPASS Impedance

(RBYPASS) vs. Supply Voltage (VIN).

0.04

0.03

0.02

VIN = 2.4V

IOUT = 100 mA

0.01

0.00

-0.01

-0.02

-0.03

-0.04

0 1 2 3 4 5 6 7 8 9 10

Time (μs)

FIGURE 2-16:

Output Voltage Ripple vs.

Time - Normal 2x Mode.

0.04

0.03

0.02

VIN = 2.4V

IOUT = 10 mA

0.01

0.00

-0.01

-0.02

-0.03

-0.04

0 1 2 3 4 5 6 7 8 9 10

Time (μs)

FIGURE 2-14:

Output Voltage Ripple vs.

Time - Normal 2x Mode.

0.04

0.03

0.02

VIN = 3.0V

IOUT = 10 mA

0.01

0.00

-0.01

-0.02

-0.03

-0.04

0 1 2 3 4 5 6 7 8 9 10

Time (μs)

FIGURE 2-17:

Output Voltage Ripple vs.

Time - Normal 1.5x Mode.

0.04

0.03

0.02

VIN = 2.4V

IOUT = 50 mA

0.01

0.00

-0.01

-0.02

-0.03

-0.04

0 1 2 3 4 5 6 7 8 9 10

Time (μs)

FIGURE 2-15:

Output Voltage Ripple vs.

Time - Normal 2x Mode.

0.04

0.03

0.02

VIN = 3.0V

IOUT = 50 mA

0.01

0.00

-0.01

-0.02

-0.03

-0.04

0 1 2 3 4 5 6 7 8 9 10

Time (μs)

FIGURE 2-18:

Output Voltage Ripple vs.

Time - Normal 1.5x Mode.

DS21989A-page 8

© 2006 Microchip Technology Inc.

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