MP5424

– 5V POWER MANAGEMENT IC WITH I2C AND MTP

MP5424 Rev. 1.0

MonolithicPower.com

10

12/6/2021

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ELECTRICAL CHARACTERISTICS (continued)

VIN1 = VIN2 = VIN3 = VIN4 = VIN5 = VAVIN = 5V, TJ = -40°C to +125°C (11), typical values are tested at

TJ = 25°C, unless otherwise noted. (12)

Parameter

Symbol

Condition

Min

Typ

Max

Units

I2C Interface Specifications (14)

Input logic high

VIN_HIGH

1.4

V

Input logic low

VIN_LOW

0.4

V

Output voltage logic low

VOUT_LOW

RSTO pin, 4mA sink

0.4

V

SCL clock frequency

fSCL

3.4

MHz

SCL high time

tHIGH_SCL

60

ns

SCL low time

tLOW_SCL

160

ns

Data setup time

tSU_DATA

10

ns

Data hold time

tHD_DATA

70

ns

Set-up time for repeated

start

tSU.START

160

ns

Hold time for repeated start

tHOLD.START

160

ns

Bus free time between a

start and a stop condition

tBUS_FREE

160

ns

Set-up time for stop

condition

tSU_STOP

160

ns

Rise time of SCL and SDA

tRISE

10

300

ns

Fall time of SCL and SDA

tFALL

10

300

ns

Suppressed spike pulse

width

tSPIKE

0

50

ns

Capacitance for each bus

line

CBUS

400

pF

Notes:

11) Guaranteed by over-temperature correlation. Not tested in production.

12) Tested with default version (MP5424GRM-0000), unless otherwise noted.

13) Guaranteed by engineering sample characterization.

14) It is recommended to use I2C function after the start-up sequence is complete (e.g. all enabled power rails have completed start up). Figure

2 shows the I2C timing diagram for reading the I2C interface specifications.

I2C TIMING DIAGRAM

Figure 2: I2C Timing Diagram