MP2910 – 5V/12V SYNCHRONOUS BUCK PWM DC-DC AND LINEAR POWER CONTROLLER

MP2910 Rev. 1.0

www.MonolithicPower.com

4

12/14/2011

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© 2011 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol

Condition

Min

Typ

Max

Units

Supply Current

Nominal Supply Current

UGATE AND LGATE OPEN

2.7

4

mA

Power-On Reset

POR Threshold

3.8

4.1

4.4

V

Hysteresis

0.15

0.4

V

Switcher Reference

Reference Voltage

0.784

0.8

0.816

V

Oscillator

Free Running Frequency

240

290

340

kHz

Ramp Amplitude

1.5

V

Error Amplifier

EA Transconductance

Gm

0.2

ms

Open Loop DC Gain

85

DB

Linear Regulator

DRV Driver Source

2.3

mA

Reference Voltage

0.784

0.8

0.816

V

PWM Controller Gate Drivers (VCC=12V)

Upper Gate Source

0.6

1

A

Upper Gate Sink

4

6

Ω

Lower Gate Source

0.6

1

A

Lower Gate Sink

2.8

3.8

Ω

Dead Time

25

100

ns

Protection

FB Under-Voltage Trip

FB Falling

75

82.5

90

%

FBL Under-Voltage Trip

FB and FBL Falling

75

82.5

90

%

OC Current Source

38

µA

Soft-Start Interval

2.5

ms

Power Good

Power Good Rising Threshold

90

%

Power Good Hysteresis

10

%

PG Sink Capability

0.02

0.4

V

Power Good Rising Delay

1

4

10

ms

Power Good Falling Delay

15

µs