LTC4376 datasheet(3/16 Pages) AD

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LTC4376

Rev 0

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Note 1: Stresses beyond those listed underAbsolute Maximum Ratings

may cause permanent damage to the device. Exposure to any Absolute

Maximum Rating condition for extended periods may affect device

reliability and lifetime.

Note 2: All currents into pins are positive, all voltages are referenced to

VSS unless otherwise specified.

Note 3: This voltage is set by the MOSFET’s body diode and will safely

exceed 0.3V during start-up for a limited time determined by the body

diode thermal dissipation.

Note 4: An internal clamp limits the GATE pin to a minimum of 10V above

CS or 90V above VSS. Driving this pin to voltages beyond the clamp may

damage the device.

Note 5: The IAS typical value is based on characterization and is not

production tested.

TYPICAL PERFORMANCE CHARACTERISTICS

INK Current in Regulation

INK Current in Shutdown

CS Current in Shutdown

VINK (V)

100

150

200

4376 G01

INK = CS = OUTK

SHDN = 0V

VINK (V)

4376 G02

TA = 125°C

TA = 85°C

TA = 25°C

TA = –40°C

INK = CS = OUTK

SHDN = 0V

VCS (V)

4376 G03

TA = 125°C

TA = 85°C

TA = 25°C

TA = –40°C

ELECTRICAL CHARACTERISTICS The

denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VINK = 4V to 40V, VIN = VINK, unless otherwise noted.

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

∆VSD(FWD) Body Diode Forward Voltage Drop (VIN – VOUT) IIN = 7A, MOSFET Off

0.55

0.77

RDS(ON)

Internal N-Channel MOSFET On Resistance

IIN = 7A

mΩ

IAS

Peak Avalanche Current

L = 0.1mH (Note 5)

IGATE(UP)

Gate Pull-Up Current

GATE = INK, ∆VSD = 0.1V

–6

–10

–17

µA

IGATE(DOWN) Gate Pull-Down Current

Fault Condition, ∆VGATE = 5V, ∆VSD = –1V

Shutdown Mode, ∆VGATE = 5V, ∆VSD = 0.7V

0.6

130

180

tOFF

Gate Turn-Off Delay Time

∆VSD = 0.1V to –1V, ∆VGATE < 2V

0.3

0.5

µs

VSHDN(TH) SHDN Pin Input Threshold

INK = 4V to 40V

0.6

1.2

VSHDN(FLT) SHDN Pin Float Voltage

INK = 4V to 40V

0.6

1.75

2.5

ISHDN

SHDN Pin Current

SHDN = 0.5V

SHDN = –40V

–0.5

–0.4

–3

–0.8

–5

–1.5

µA

ILEAK

SHDN Leakage Current

SHDN = 2.6V

µA

VCS(TH)

Reverse CS Threshold for GATE Off

GATE = 0V, IGATE(DOWN) = 1mA

–0.9

–1.8

–2.7

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