MP2953B – DIGITAL PWM CONTROLLER WITH PMBUS FOR VR12.5

MP2953B Rev. 1.01

www.MonolithicPower.com

8

10/9/2015

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unless otherwise noted.

Parameter

Symbol Condition

Min

Typ

Max

Units

Power Management Features

VIN UVLO Turn-On

Threshold

Adjustable via the PMBus

10.2

V

VIN UVLO Turn-Off

Threshold

Adjustable via the PMBus

9

V

Thermal Protection

Threshold

DBh = 961Eh

150

Thermal Protection

Hysteresis

DBh = 961Eh

30

PMBus DC Characteristics (ALT_P, SDA_P, SCL_P)

Input High Voltage

SCL_P, SDA_P

2.4

V

Input Low Voltage

SCL_P, SDA_P

0.8

V

Input Leakage Current

SCL_P, SDA_P, ALT_P

-10

10

μA

Output Low Voltage

ALT_P Sinks 2mA

400

mV

Maximum Voltage

Transient

Voltage

including

Ringing

-0.3

3.3

3.6

V

Pin Capacitance

(5)

10

pF

PMBus Timing characteristics

(5)

Operating Frequency Range

10

400

kHz

Bus Free Time

Period between Stop and Start

Condition

4.7

μs

Holding Time

4.0

μs

Repeated Start Condition

Setup Time

4.7

μs

Stop Condition Setup Time

4.0

μs

Data Hold Time

300

ns

Data Setup Time

250

ns

Clock Low Time Out

25

35

ms

Clock Low Period

4.7

μs

Clock High Period

4.0

50

μs

Clock/Data Fall Time

300

μs

Clock/Data Rise Time

1000

μs

Notes:

5)

Guaranteed by design or characterization data, not tested in production.