LT8636 datasheet(31/40 Pages) AD

Nome de Peças	LT8636

Descrição Electrónicos	5V 3A Output, 42V Input USB Charger with Cable Drop Compensation and Dataline Protection

PDF	40 Pages

Scroll/Zoom	100%

Fabricante Electrônico	AD [Analog Devices]

Página de início	http://www.analog.com

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31 / 40 page

LT8698S/LT8698S-1

Rev. A

For more information www.analog.com

APPLICATIONS INFORMATION

VBUS

(AT DEVICE)

D+ 100µA ISINK

PORTABLE

DEVICE

µCONTROLLER

INPUT TO

LT8698S

SEL(X) PINS

LT8698S

CHARGING

PORT

TIME

COMMENTS

STATUS DC LOW INDICATES NO

CONNECTION

STATUS OSCILLATING INDICATES

CONNECTION IN PROGRESS,

SEL(X) PIN LOCKED OUT

STATUS DC HIGH INDICATES

CONNECTION DONE, CDP

COMPONENTS LATCHED OFF

STATUS DC HIGH WITH CDP3

SELECTED INDICATES SUCCESFUL

CDP CONNECTION

TIME

IBUS

1.5A

2.5mA

0.6V

Off

D– 100µA ISINK

D+ 0.6V VSOURCE

D+ 100µA ISINK

D– 0.6V VSOURCE

DATALINE MUX

STATUS

DATALINE SWITCH

(CDP2 ONLY)

D– 0.6V VSOURCE

CDP1/2

CDP3

D+/D– PULLUP

Off

>40ms

<1s

<20ms

~9ms

<10ms

8698S F11

D+

D–

CHARGING DEVICE PORT (CDP) TIMING DIAGRAM

Figure 13. CDP Timing Diagram

Figure 14. CDP Sequence

1.5A CHARGING CURRENT

HIGH SPEED

USB 2.0

DATA

100ms/DIV

VBUS

2V/DIV

IMON

1A/DIV

D+ – D–

2V/DIV

STATUS

5V/DIV

8698S F14

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