LM5050-2 datasheet(5/22 Pages) TI

Part #	LM5050-2

Description	LM5050-2 High Side OR-ing FET Controller

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0.0V

1.0V

0 mV

VSD(REV)

-500 mV

VSD(REG)

200 mV

VGATE

VIN > VOUT

VIN < VOUT

tGATE(OFF)

LM5050-2

www.ti.com

SNVS679B – NOVEMBER 2010 – REVISED MARCH 2013

Electrical Characteristics (continued)

Limits in standard type are for TJ = 25°C only; limits in boldface type apply over the operating junction temperature (TJ)

range of -40°C to +125°C. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical

values represent the most likely parametric norm at TJ = 25°C, and are provided for reference purposes only. Unless

otherwise stated the following conditions apply: VIN = 12.0V, VOUT = 12.0V, VOFF= 0.0V, CGATE= 47 nF, and TJ = 25°C.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

OFF Pin

VOUT = VIN-500 mV

VOFF(IH)

OFF Input High Threshold Voltage

-

1.55

1.73

VOFF Rising

V

VOUT = VIN - 500 mV

VOFF(IL)

OFF Input Low Threshold Voltage

1.09

1.41

-

VOFF Falling

ΔVOFF

OFF Threshold Voltage Hysteresis

VOFF(IH) - VOFF(IL)

-

160

-

mV

IOFF

OFF Pin Internal Pull-down

VOFF = 5.0V

2.0

5

8.0

µA

nFGD Pin

VOFF = 5V

FET Test Threshold Voltage

VSD(TST)

VOUT = 12V

250

350

450

mV

VIN < VOUT

VIN falling from 12V

ΔVSD(TST)

FET Test Threshold Voltage Hysteresis

-

95

-

mV

nFGD Output Low Voltage

VOFF = 5V

nFGDVOL

-

630

850

mV

nFGD Output = On

InFGD = 1 mA Sinking

nFGD Output Leakage Current

VOFF = 0V

nFGDIOL

-

0.001

0.7

µA

nFGD Output = Off

VnFGD = 5.5V

Figure 4. Gate Off Timing for Forward to Reverse Transition

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