MCP1640(2015) Просмотр технического описания (PDF) - Microchip Technology

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производитель

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.

10000

PWM / PFM

PWM Only

1000

100

VOUT = 2.0V

VOUT = 5.0V

VOUT = 3.3V

VOUT = 2.0V VOUT = 3.3V

VOUT = 5.0V

10

0.8 1.1 1.4 1.7

2 2.3 2.6 2.9 3.2 3.5

VIN (V)

FIGURE 2-13:

VIN.

Input No Load Current vs.

5

4

P - Channel

3

2

1

N - Channel

0

1 1.5 2 2.5 3 3.5 4 4.5 5

> VIN or VOUT

FIGURE 2-14:

N-Channel and P-Channel

RDSON vs. > of VIN or VOUT.

FIGURE 2-16:

MCP1640 3.3V VOUT PFM

Mode Waveforms.

VOUT

20 mV/DIV

AC

Coupled

VSW

2V/DIV

IOUT = 1 mA

IL

0.05 mA/DIV

1 µs/DIV

FIGURE 2-17:

MCP1640B 3.3V VOUT

PWM Mode Waveforms.

60

50

VOUT = 3.3V

VOUT = 5.0V

40

VOUT = 2.0V

30

20

10

0

0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5

VIN (V)

FIGURE 2-15:

Average of PFM/PWM

Threshold Current vs. VIN.

FIGURE 2-18:

Waveforms.

MCP1640/B High Load

 2010-2015 Microchip Technology Inc.

DS20002234D-page 7

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