© 2013 Littelfuse, Inc.

Specifications are subject to change without notice.

Revised: 04/24/13

General Purpose ESD Protection - SP724 Series

Absolute Maximum Ratings

Parameter

Rating

Units

Continuous Supply Voltage, (V+) - (V-)

+20

V

Forward Peak Current, I

(Refer to Figure 5)

±2.2, 100µs

A

Thermal Information

Parameter

Rating

Units

Thermal Resistance (Typical, Note 3)

o

C/W

SOT Package

220

o

C/W

Maximum Storage Temperature Range

-65 to 150

o

C

Maximum Junction Temperature

150

o

C

Maximum Lead Temperature

(Soldering 20-40s) (SOT - Lead Tips Only)

260

o

C

CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause

permanent damage to the device. This is a stress only rating and operation of the device

at these or any other conditions above those indicated in the operational sections of this

specification is not implied.

Parameter

Symbol

Test Conditions

Min

Typ

Max

Units

Operating Voltage Range,

V

V

SUPPLY

1

-

20

V

Forward Voltage Drop

Forward Voltage Drop

IN to V-

V

FWDL

I

-

2

-

V

IN to V+

V

FWDH

-

2

-

V

Input Leakage Current

I

IN

-10

1

10

nA

Quiescent Supply Current

I

QUIESCENT

V+ = 20V, V- = GND

-

-

100

nA

Equivalent SCR ON Threshold

(Note 6)

-

1.1

-

V

Equivalent SCR ON Resistance

V

-

1.0

-

Ω

Input Capacitance

C

IN

-

3

-

pF

Notes:

4. In automotive and other battery charging systems, the SP724 power supply lines should be externally protected for load dump and reverse battery. When the V+ and V- Pins are connected

to the same supply voltage source as the device or control line under protection, a current limiting resistor should be connected in series between the external supply and the SP724

supply pins to limit reverse battery current to within the rated maximum limits.

5. Bypass capacitors of typically 0.01µF or larger should be connected closely between the V+ and V- Pins for all applications.

6. Refer to the Figure 3 graph for definitions of equivalent “SCR ON Threshold” and “SCR ON Resistance”.These characteristics are given here for information to determine peak current and

dissipation under EOS conditions.

Note:

ESD Ratings and Capability - See Figure 1, Table 1

Typical Application of the SP724

INPUT

DRIVERS

SP724 INPUT PROTECTION CIRCUIT (1 OF 4 SHO WN)

OR

SIGNAL

SOURCES

IN 1, 3, 4 AND 6

SP724

V-

LINEAR OR

DIGITAL IC

INTERFACE

V+

0.001µF

Application as an Input Clamp for Over-voltage, Greater than 1V

BE

Above V+ or less than -1V