MCP1612T-ADJI/MF(2005) 查看數據表（PDF） - Microchip Technology

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MCP1612T-ADJI/MF
(Rev.:2005)

Single 1A, 1.4 MHz Synchronous Buck Regulator

Microchip Technology 

MCP1612

TYPICAL PERFORMANCE CURVES (Continued)

Note: Unless otherwise indicated, VIN = VCC = VSHDN = 3.3V, COUT = CIN = 10 µF, L = 3.3 µH, ILOAD = 100 mA,

TA = +25°C. Boldface specifications apply over the TA range of -40°C to +85°C.

Start-up from VIN = 0V to 3.3V

VIN

2.0V/DIV

VOUT

100 mV/DIV

IOUT = 100 mA to 800 mA

VIN = 5.0V

VOUT = 3.3V

VOUT

1.0V/DIV

FIGURE 2-7:

VOUT = 1.8V

1.0 ms/DIV

Power-Up from VIN.

Start-up from SHDN

SHDN

2.0V/DIV

VOUT

1.0V/DIV

FIGURE 2-8:

VOUT

200 mV/DIV

VOUT = 1.8V

1.0 ms/DIV

Power-Up from Shutdown.

IOUT = 100 mA to 800 mA

IOUT

500 mA/DIV

FIGURE 2-9:

VOUT = 1.8V

50 µs/DIV

Load Transient Response.

IOUT

500 mA/DIV

FIGURE 2-10:

500 µs/DIV

Load Transient Response.

Line Step Response, VIN = 3.0V to 4.0V

VIN

2.0V/DIV

VOUT

50 mV/DIV

FIGURE 2-11:

VOUT = 1.8V

IOUT = 800 mA

200 µs/DIV

Line Transient Response.

Line Step Response, VIN = 4.5V to 5.5V

VIN

2.0V/DIV

VOUT

50 mV/DIV

FIGURE 2-12:

VOUT = 3.3V

IOUT = 800 mA

200 µs/DIV

Line Transient Response.

© 2005 Microchip Technology Inc.

DS21921B-page 7

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