MB39C031 datasheet(18/69 Pages) CYPRESS

Part #	MB39C031

Description	2ch Buck DC/DC Converter 1ch LDO with I2C Interface and SW FET

PDF	69 Pages

Scroll/Zoom	100%

Manufacturer	CYPRESS [Cypress Semiconductor]

Direct Link	http://www.cypress.com

Logo

18 / 69 page

Document Number: 002-08407 Rev. *B

Page 18 of 69

MB39C031

10.

State Transition Diagram

Stand-by

Stand-by 2

General

Error

detection

(1)

(2)

(6)

(5)

(4)

(3)

(1)External CTLMAIN pin "H"

(2)External CTLMAIN pin "L"

(3)External CTL pin "H" / I

2C communication "relevant CH_ON"

(4)External CTL pin "L" / I

2C communication "relevant CH_OFF"

(5)Error detection (OCP, OCP_1ms continuation)

(6)Turning on the power supply again (equal to or less than uvlo_vcc reset voltage) or setting CTLMAIN to "L"

Notes:

 When executing the ON/OFF control for DD1, DD2 and LDO using the external pin, don't execute the ON/OFF control using

2C. Aside from the ON/OFF control, it is possible to control everything else using I2C.

 When executing the ON/OFF control for DD1, DD2 and LDO using I

2C, input "L" to the CTL* pin (the pin is open or in the GND

connection condition).

MB39C031 Datasheet(PDF) 18 Page - Cypress Semiconductor