MCP1601_13 datasheet(6/24 Pages) MICROCHIP

Part #	MCP1601

Description	500 mA Synchronous BUCK Regulator

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Manufacturer	MICROCHIP [Microchip Technology]

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MCP1601

DS21762B-page 6

 2003-2013 Microchip Technology Inc.

Note: Unless otherwise indicated, VIN = 4.2V, VOUT = 1.8V, L = 10 µH, COUT= 10 µF (X5R Ceramic), CIN = 10 µF (X5R

Ceramic), SYNC/PWM=VIN.

FIGURE 2-7:

Output Voltage vs. Load

Current.

FIGURE 2-8:

Output Voltage vs. Load

Current.

FIGURE 2-9:

Input to Output Voltage

Differential for 100% Duty Cycle vs. Load

Current.

FIGURE 2-10:

Switch Leakage vs.

Temperature.

FIGURE 2-11:

Typical PWM Mode of

Operation Waveforms.

FIGURE 2-12:

Typical PFM Mode of

Operation Waveforms.

1.700

1.720

1.740

1.760

1.780

1.800

1.820

0

100

200

300

400

500

Load Current (mA)

VOUT = 1.8V

Auto PWM/PFM

VIN = 2.7V

VIN = 3.6V

VIN = 4.2V

3.10

3.13

3.15

3.18

3.20

3.23

3.25

3.28

3.30

3.33

3.35

0

100

200

300

400

500

Load Current (mA)

VOUT = 3.3V

Auto PWM/PFM

VIN = 4.5V

VIN = 5.0V

VIN = 5.5V

0

50

100

150

200

250

300

350

400

450

0

100

200

300

400

500

Load Current (mA)

VOUT = 3.3V

VOUT = 2.7V

Dropout = (VIN-VOUT) in mV @ 97% of VOUT

0.0

1.5

3.0

4.5

-40

-15

10

35

60

85

Ambient Temperature (°C)

VIN = 5.0V

Synchronous NChannel

BUCK Switch PChannel

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MCP1601 Datasheet(PDF) 6 Page - Microchip Technology

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