GM1851

LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD

5 of 10

www.unisonic.com.tw

QW-R122-007,B

ABSOLUTE MAXIMUM RATINGS

PARAMETER

SYMBOL

RATINGS

UNIT

Supply Current

19

mA

Power Dissipation (Note 1)

1250

mW

Operating Temperature

-40 ~ +70

°C

Storage Temperature

-55 ~ +150

°C

Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.

Absolute maximum ratings are stress ratings only and functional device operation is not implied.

PARAMETER

TEST CONDITIONS

MIN

TYP MAX UNIT

DC CHARACTERISTICS

Power Supply Shunt Regulator Voltage

Pin 8, Average Value

22

26

30

V

Latch Trigger Voltage

Pin 7

15

17.5

20

V

Sensitivity Set Voltage

Pin 8 to Pin 6

6

7

8.2

V

Output Saturation Voltage

Pin 1, Without Fault

100

240

mV

Output Drive Current

Pin 1, With Fault

0.5

1

2.4

mA

Output External Current Sinking Capability

Pin 1, Without Fault

Vpin 1 Held to 0.3V (Note 4)

2.0

5

mA

Output Saturation Resistance

Pin 1, Without Fault

100

Ω

Noise Integration Sink Current Ratio

Pin 7, Ratio of Discharge Currents Between

No Fault and Fault Conditions

2.0

2.8

3.6 μA/μA

AC CHARACTERISTICS

Normal Fault Current Sensitivity

Figure 1 (Note 3)

3

5

7

mA

Normal Fault Trip Time

500Ω Fault, Figure 2 (Note 2)

18

mS

Normal Fault with Grounded Neutral Fault

Trip Time

500Ω Normal Fault, 2Ω Neutral, Figure 2

(Note 2)

18

mS

Note: 1.

2.

3.

4.

For operation in ambient temperatures above 25℃, the device must be debated based on a 125℃ maximum

junction temperature and a thermal resistance of 80℃/W junction to ambient for the DIP and 162/W for the

SO Package.

Average of 10 trials.

Required UL sensitivity tolerance is such that external trimming of UTC GM1851 sensitivity will be necessary.

This externally applied current is in addition to the internal ''output drive current '' source.

FIGURE 1.Normal Fault Sensitivity Test Circuit