MIC2127A datasheet(13/38 Pages) MICROCHIP

Part #	MIC2127A

Description	75V, Synchronous Buck Controller Featuring Adaptive On-Time Control

PDF	38 Pages

Scroll/Zoom	100%

Manufacturer	MICROCHIP [Microchip Technology]

Direct Link	http://www.microchip.com

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13 / 38 page

 2016 Microchip Technology Inc.

DS20005676B-page 13

MIC2127A

Note:

Unless otherwise indicated, VVIN =12V, fSW =300 kHz, RILIM =1.3 k, L = 10 µH, VEXTVDD =VOUT, TA =+25°C

(refer to the Typical Application circuit).

FIGURE 2-43:

VDD UVLO Threshold-

Rising.

FIGURE 2-44:

VDD UVLO Threshold-

Falling.

FIGURE 2-45:

Enable into Output Short.

FIGURE 2-46:

Power-Up into Output Short.

FIGURE 2-47:

Output Current Limit

Threshold.

FIGURE 2-48:

Output Short Circuit.

VSW

5V/div

VOUT

2V/div

VVIN = Rising

VOUT =5V

IOUT =0A

4ms/div

VVDD

1V/div

VSW

5V/div

VOUT

2V/div

VVIN = Falling

VOUT =5V

IOUT =0A

100 ms/div

VVDD

1V/div

5A/div

VOUT

500 mV/div

VVIN =48V

VOUT =5V

Load =Short

RILIM =1.3 k

4ms/div

VEN

2V/div

5A/div

VOUT

500 mV/div

VVIN = 0V to 48V

VOUT =5V

Load = Short

RILIM =1.3 k

10 ms/div

VVIN

20V/div

IOUT

5A/div

VVIN =48V

VOUT =5V

RILIM =1.3 k

2ms/div

VOUT

2V/div

5A/div

VVIN =48V

VOUT =5V

Load = Short

RILIM =1.3 k

2ms/div

VOUT

2V/div

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