MCP1623(2010) Просмотр технического описания (PDF) - Microchip Technology

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MCP1623
(Rev.:2010)

Low-Voltage Input Boost Regulator for PIC® Microcontrollers

Microchip Technology 

MCP1623/24

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

1000

PWM / PFM

PWM ONLY

VOUT = 5.0V

VOUT = 2.0V

VOUT = 3.3V

100

10

0.8

VOUT = 2.0V

1.1 1.4 1.7

VOUT = 3.3V

VOUT = 5.0V

2 2.3 2.6 2.9 3.2 3.5

VIN (V)

FIGURE 2-13:

VIN.

Input No Load Current vs.

FIGURE 2-16:

MCP1624 3.3V VOUT PFM

Mode Waveforms.

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 2-17:

MCP1623 3.3V VOUT

PWM Mode Waveforms.

16

VOUT = 5.0V

14

VOUT = 2.0V

VOUT = 3.3V

12

10

8

6

4

2

0

0

0.5

1

1.5

2

2.5

3

3.5

4

VIN (V)

FIGURE 2-15:

Current vs. VIN.

PFM/PWM Threshold

FIGURE 2-18:

Waveforms.

MCP1623/24 High Load

 2010 Microchip Technology Inc.

DS41420B-page 7

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