NIS5112

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2

Table 1. FUNCTIONAL PIN DESCRIPTION

Pin

Function

Description

3

Enable/Timer

A high level signal on this pin allows the device to begin operation. Connection of a capacitor will delay

turn on for timing purposes. A low input signal inhibits the operation.

1

Ground

Negative input voltage to the device. This is used as the internal reference for the IC.

4

ILimit

A resistor between this pin and the source pin sets the current limit level.

5,6,7

Source

Source of power FET, which is also the switching node for the load.

2

dV/dt

A capacitor from this pin to ground programs the slew rate of the output at turn on. This capacitor is

discharged by an internal discharge circuit when the device is disabled via the enable pin.

8

VCC

Positive input voltage to the device.

Table 2. MAXIMUM RATINGS (Maximum ratings are those, that, if exceeded, may cause damage to the device. Electrical

characteristics are not guaranteed over this range)

Rating

Symbol

Value

Unit

Input Voltage, Operating,

Steady−State (Input+ to Input−)

Transient (Conditions 1 ms)

Vin

−0.3 to 18

−0.3 to 25

V

Drain Voltage, Operating,

Steady−State (Drain to Input−)

Transient (Conditions 1 ms)

VDD

−0.3 to 18

−0.3 to 25

V

Drain Current, Peak (Internally Clamped)

IDpk

25

A

Drain Current, Continuous (TA=25°C), (Note 2)

IDavg

5.3

A

Thermal Resistance, Junction−to−Air

0.5 in2 Copper

1.0 in2 Copper

QJA

120

110

°C/W

°C/W

Thermal Resistance, Junction−to−Lead (Pin 8)

QJL

27

°C/W

Power Dissipation (TA = 25°C) (Note 1)

Pmax

1.0

W

Operating Temperature Range (Note 2)

TJ

−40 to 175

°C

Nonoperating Temperature Range

TJ

−55 to 175

°C

Lead Temperature, Soldering (10 Sec)

TL

260

°C

Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality

should not be assumed, damage may occur and reliability may be affected.

1. Mounted on FR−4 board, 1 in sq pad, 1 oz coverage.

2. Actual maximum junction temperature is limited by an internal protection circuit and will not reach the absolute maximum temperature as

specified.