MCP1640(2015) 查看數據表（PDF） - Microchip Technology

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MCP1640
(Rev.:2015)

0.65V Start-Up Synchronous Boost Regulator with True Output Disconnect or Input/Output Bypass Option

Microchip Technology 

MCP1640/B/C/D

Note: Unless otherwise indicated, VIN = EN = 1.2V, COUT = CIN = 10 µF, L = 4.7 µH, VOUT = 3.3V, ILOAD = 15 mA, TA = +25°C.

VOUT

1V/DIV

VIN

1V/DIV

VEN

1V/DIV

FIGURE 2-19:

500 µs/DIV

3.3V Start-Up After Enable.

VOUT

100 mV/DIV

AC

Coupled

IOUT

50 mA/DIV

MCP1640B PWM

Mode Only

ISTEP = 1 mA to 75 mA

100 µs/DIV

FIGURE 2-22:

MCP1640B 3.3V VOUT Load

Transient Waveforms.

VOUT

1V/DIV

VIN

1V/DIV

VEN

1V/DIV

FIGURE 2-20:

VIN = VENABLE.

500 µs/DIV

3.3V Start-Up when

VOUT

100 mV/DIV

AC

Coupled

IOUT

50 mA/DIV

PWM

MODE

PFM

MODE

ISTEP = 1 mA to 75 mA

100 µs/DIV

FIGURE 2-21:

MCP1640 3.3V VOUT Load

Transient Waveforms.

MCP1640B PWM

Mode Only

VOUT

50 mV/DIV

AC

Coupled

IOUT

50 mA/DIV

ISTEP = 1 mA to 50 mA

100 µs/DIV

FIGURE 2-23:

MCP1640B 2.0V VOUT Load

Transient Waveforms.

VOUT

50 mV/DIV

AC

Coupled

VIN

1V/DIV

FIGURE 2-24:

Waveforms.

VSTEP from

1V to 2.5V

200 µs/DIV

3.3V VOUT Line Transient

DS20002234D-page 8

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