LT3045 datasheet(16/45 Pages) AD

Part #	LT3045

Description	18V, 1A Step-Down Silent Switcher 3 with Ultra-Low Noise Reference

PDF	45 Pages

Scroll/Zoom	100%

Manufacturer	AD [Analog Devices]

Direct Link	http://www.analog.com

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16 / 45 page

Data Sheet

LT83201

analog.com

Rev. A 16 of 45

Figure 40. Switch Rising Edge

Figure 41. Switching Waveforms, Full Frequency

Continuous Operation

Figure 42. Switching Waveforms, Full Frequency

Discontinuous Operation

Figure 43. Switching Waveforms, Pulse-Skipping

Discontinuous Operation

Figure 44. Transient Response: Load Current

Stepped from 0.5A to 1A

Figure 45. Transient Response: Load Current

Stepped from 50mA to 1A

VIN = 12V

ILOAD = 1A

5ns/DIV

VSW

2V/DIV

12VIN TO 1VOUT AT 1A

fSW = 2MHz

500ns/DIV

VSW

5V/DIV

1A/DIV

12VIN TO 1VOUT AT 100mA

fSW = 2MHz

1µs/DIV

VSW

5V/DIV

500mA/DIV

12VIN TO 1VOUT AT 60mA

VSYNC = 0V

1µs/DIV

VSW

5V/DIV

500mA/DIV

VIN = 12V, VOUT = 3.3V, fSW = 2MHz, RC = 2.32kΩ, CC = 1.5nF

TYPICAL APPLICATION CIRCUIT

0.5A

20µs/DIV

ILOAD

500mA/DIV

VOUT

20mV/DIV

FORCED CONTINUOUS MODE

DISCONTINUOUS CONDUCTION MODE

VIN = 12V, VOUT = 3.3V, fSW = 2MHz, RC = 2.32kΩ, CC = 1.5nF

TYPICAL APPLICATION CIRCUIT

50mA

20µs/DIV

ILOAD

1A/DIV

VOUT

20mV/DIV

LT3045 Datasheet(PDF) 16 Page - Analog Devices

LT3045 Datasheet(HTML) 16 Page - Analog Devices

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