ADP1879(RevA) Просмотр технического описания (PDF) - Analog Devices

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Компоненты Описание

производитель

ADP1879
(Rev.:RevA)

Synchronous Buck Controller with Constant On Time and Valley Current Mode

Analog Devices 

Data
4heet

0.808

0.806

0.804

0.802

0.800

0.798

0.796

0.794

0.792

0

+125°C

+25°C

–40°C

VIN = 13V

VIN = 16.5V

1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000

LOAD CURRENT (mA)

Figure 16. Output Voltage Accuracy—600 kHz, VOUT = 0.8 V

1.818

1.816

1.814

1.812

1.810

1.808

1.806

1.804

1.802

1.800

1.798

1.796

1.794

1.792

1.790

1.788

1.786

1.784

1.782

1.780

1.778

1.776

1.774

1.772

1.770

0

1500

VIN = 13V

+125°C

+25°C

–40°C

VIN = 16.5V

+125°C

+25°C

–40°C

3000 4500 6000 7500 9000 10,500 12,000

LOAD CURRENT (mA)

Figure 17. Output Voltage Accuracy—600 kHz, VOUT = 1.8 V

5.030

5.025

5.020

5.015

5.010

5.005

5.000

4.995

4.990

4.985

4.980

4.975

4.970

0

+125°C

+25°C

–40°C

VIN = 13V

VIN = 16.5V

VIN = 20V

1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000

LOAD CURRENT (mA)

Figure 18. Output Voltage Accuracy—600 kHz, VOUT = 5 V

ADP1878/ADP1879

0.807

0.805

0.803

0.801

0.799

0.797

0.795

0.793

0.791

0.789

0.787

0

2000

VIN = 13V

+125°C

+25°C

–40°C

VIN = 16.5V

+125°C

+25°C

–40°C

4000

6000

8000

LOAD CURRENT (mA)

10,000

Figure 19. Output Voltage Accuracy—1.0 MHz, VOUT = 0.8 V

1.820

1.815

1.810

1.805

1.800

1.795

1.790

0

VIN = 13V

+125°C

+25°C

–40°C

VIN = 16.5V

+125°C

+25°C

–40°C

1000 2000 3000 4000 5000 6000 7000 8000 9000 10,000

LOAD CURRENT (mA)

Figure 20. Output Voltage Accuracy—1.0 MHz, VOUT = 1.8 V

5.04

5.03

5.02

5.01

5.00

4.99

4.98

4.97

4.96

4.95

4.94

4.93

4.92

4.91

4.90

0

VIN = 13V

+125°C

+25°C

–40°C

VIN = 16.5V

+125°C

+25°C

–40°C

800 1600 2400 3200 4000 4800 5600 6400 7200 8000 8800 9600

LOAD CURRENT (mA)

Figure 21. Output Voltage Accuracy—1.0 MHz, VOUT = 5 V

Rev. A | Page 9 of 40

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