MAX17127ETP+ datasheet(7/22 Pages) MAXIM

Part #	MAX17127ETP+

Description	Six-String WLED Driver with Integrated Step-Up Converter

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Manufacturer	MAXIM [Maxim Integrated Products]

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_______________________________________________________________________________________ 7

Six-String WLED Driver with Integrated

Step-Up Converter

Typical Operating Characteristics (continued)

(Circuit of Figure 1. VIN = 12V, TA = +25NC, unless otherwise noted.)

SWITCHING WAVEFORMS

(VS = 26V, BRIGHTNESS = 100%)

MAX17127 toc09

1µs/div

VLX

20V/div

0mA

200mA/div

INDUCTOR

CURRENT

0V

VOUT = 32V, IOUT = 120mA

STARTUP WAVEFORMS

(BRIGHTNESS = 100%)

MAX17127 toc10

1ms/div

VLX

20V/div

VOUT

20V/div

VEN

5V/div

0V

INDUCTOR

CURRENT

500mA/div

0A

0V

12V

STARTUP WAVEFORMS

(BRIGHTNESS = 20%)

MAX17127 toc11

2ms/div

VLX

20V/div

VOUT

20V/div

VEN

5V/div

0V

INDUCTOR

CURRENT

500mA/div

0A

0V

12V

LED CURRENT WAVEFORMS

(BRIGHTNESS = 50%)

MAX17127 toc12

1ms/div

VFB1

10V/div

0V

INDUCTOR

CURRENT

500mA/div

0mA

ILED

20mA/div

0mA

LED CURRENT WAVEFORMS

(BRIGHTNESS = 1%)

MAX17127 toc13

1ms/div

VFB1

10V/div

0V

INDUCTOR

CURRENT

500mA/div

0mA

IFB1

20mA/div

0mA

LED-OPEN FAULT PROTECTION

(BRIGHTNESS = 100%, LED OPEN ON FB1)

MAX17127 toc14

200ms/div

VOUT

10V/div

VFB1

1V/div

0V

VFB2

10V/div

0V

IFB2

10mA/div

10V

20mA

0mA

32V

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MAX17127ETP+ Datasheet(PDF) 7 Page - Maxim Integrated Products

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