SC225KSIT

120 kHz Bandwidth, High Voltage Isolation

Current Sensor with Integrated Overcurrent Detection

6/13

Fault Enable (FAULT_EN

Pin) Input Low Voltage

Threshold

V

IL

–

–

0.1 × V

CC

V

Fault Enable (FAULT_EN

Pin) Input High Voltage

Threshold

V

IH

0.8 × V

CC

–

–

V

Fault Enable (FAULT_EN

Pin) Input Resistance

R

FEI

–

1

–

M

Ω

OVERCURRENT CHARACTERISTICS

Fault Enable (FAULT_EN

Pin) Delay

8

t

FED

Set FAULT_EN to low, V

V

exceeding the corresponding

overcurrent threshold; then reset

FAULT_EN from low to high and

measure the delay from the rising edge

of FAULT_EN to the falling edge of ¯

FAULT

–

15

–

μs

Fault Enable (FAULT_EN

Pin) Delay(Non-Latching

versions)9

t

Set FAULT_EN to low, V

V

exceeding the corresponding

overcurrent threshold; then reset

FAULT_EN from low to high and

measure the delay from the rising edge

of FAULT_EN to the falling edge of

FAULT

–

150

–

ns

Overcurrent Fault

Response Time

t

OC

FAULT_EN set to high for a minimum

of

20 μs before the overcurrent event;

switchpoint set at V

delay from IP exceeding overcurrent

–

1.9

–

μs

Undercurrent Fault

Response

Time(Non-Latching

versions)

t

UC

FAULT_EN set to high for a minimum

of 20

μs before the undercurrent event;

switchpoint set at V

delay from I

overcurrent faultthreshold to V

FAULT

> 0.8 × VCC , without external

C

–

3

–

μs

Overcurrent Fault Reset

Delay

t

OCR

Time from V

–

500

–

ns

Overcurrent Fault Reset

Hold Time

t

OCH

Time from V

–

250

–

ns

Overcurrent

Input

Pin

Resistance

R

OC

T

2

–

–

MΩ

VOLTAGE REFERENCE CHARACTERISTICS

Voltage Reference Output

V

ZCR

T

A

= 25 °C (Not a highly accurate

reference)

0.48×V

CC

0.5×V

V

Voltage Reference Output

Load Current

I

ZCR

Source current

3

–

–

mA

Sink current

50

–

–

μA

Voltage Reference Output

Drift

∆V

ZCR

–

±10

–

mV