MCP1601_13 datasheet(5/24 Pages) MICROCHIP

Part #	MCP1601

Description	500 mA Synchronous BUCK Regulator

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Manufacturer	MICROCHIP [Microchip Technology]

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 2003-2013 Microchip Technology Inc.

DS21762B-page 5

MCP1601

2.0

TYPICAL PERFORMANCE CURVES

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 2-1:

Efficiency vs. Load Current

(VOUT = 1.2V).

FIGURE 2-2:

Efficiency vs. Load Current

(VOUT = 1.8V).

FIGURE 2-3:

Efficiency vs. Load Current

(VOUT = 3.3V).

FIGURE 2-4:

PFM Mode Quiescent

Current vs. Input Voltage.

FIGURE 2-5:

Oscillator Frequency vs.

Input Voltage.

FIGURE 2-6:

Output Voltage vs. Load

Current.

Note:

The graphs and tables provided following this note are a statistical summary based on a limited number of

samples and are provided for informational purposes only. The performance characteristics listed herein

are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified

operating range (e.g., outside specified power supply range) and therefore outside the warranted range.

40

50

60

70

80

90

100

0

100

200

300

400

500

Load Current (mA)

VOUT = 1.2V

Auto PWM/PFM

VIN = 2.7V

VIN = 3.6V

VIN = 4.2V

50

60

70

80

90

100

110

0

100

200

300

400

500

Load Current (mA)

VOUT = 1.8V

Auto PWM/PFM

VIN = 2.7V

VIN = 3.6V

VIN = 4.2V

50

60

70

80

90

100

110

0

100

200

300

400

500

Load Current (mA)

VOUT = 3.3V

Auto PWM/PFM

VIN = 5.0V

VIN = 4.5V

VIN = 5.5V

100

110

120

130

2.7

3.1

3.5

3.9

4.3

4.7

5.1

5.5

Input Voltage (V)

VOUT = 1.8V

PFM Mode

ILOAD = 0

TA = - 40°C

TA = + 0°C

TA = + 85°C

TA = + 25°C

680.0

700.0

720.0

740.0

760.0

780.0

2.73.1

3.53.9

4.34.7

5.15.5

Input Voltage (V)

TA = + 125°C

TA = - 40°C

TA = + 25°C

TA = 0°C

ILOAD = 10 mA

Forced PWM Mode

1.100

1.125

1.150

1.175

1.200

1.225

1.250

1.275

1.300

0

100

200

300

400

500

Load Current (mA)

VOUT = 1.2V

Auto PWM/PFM

VIN = 2.7V

VIN = 3.6V

VIN = 4.2V

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