MP8044 - 22V, 4A DUAL CHANNEL POWER HALF-BRIDGE

M8044 Rev. 1.0

www.MonolithicPower.com

3

5/5/2010

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© 2010 MPS. All Rights Reserved.

ELECTRICAL CHARACTERISTICS

Parameters

Symbol Condition

Min

Typ

Max

Units

VSP Operating Current

2.1

2.5

mA

VSP Shutdown Current

1.0

10

µA

Operating VSP Threshold Low

4.8

5.3

V

Operating VSP Threshold High

6.5

7.2

V

STBYB Threshold Low

0.9

1.1

V

STBYB Threshold High

1.9

2.2

V

PWM Input Bias Current

0.1

1.0

µA

SHDNB Threshold Low

0.9

1.1

V

SHDNB Threshold High

1.9

2.2

V

PWM1,2 Threshold Low

0.9

1.4

V

PWM1,2 Threshold High

1.8

2.2

V

POR-VFB Threshold High

1.25

V

POR-VFB hysteresis

104

mV

3.3

V

0.5

V

SW1/2 On Resistance

Side

0.2

Ω

4

A

SW1/2 Current Limit

(5)

4

A

SW1/2 Switching Frequency

0.6

MHz

SW1/2 Maximum Duty Cycle

(6)

99.5

%

SW1/2 Rise/Fall Time

10

ns

PWM Pulse Width

Pulse

200

ns

Dead Time

(5)

30

ns

PWM1,2 to SW1,2 Delay Time

Rising

40

ns

PWM1,2 to SW1,2 Delay Time

Falling

40

ns

Thermal Shutdown Temperature

(5)

150

°C

Notes:

5) Not production tested.

6) OUT drives low for 1.5µs every 300µs to charge the BST to SW capacitor.