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MC3425

Power Supply Supervisory/Over and Undervoltage Protection Circuit

ON Semiconductor 

MC3425

ELECTRICAL CHARACTERISTICS (4.5 V ≤ VCC ≤ 40 V; TA = Tlow to Thigh [Note 2], unless otherwise noted.)

Characteristics

Symbol

Min

Typ

REFERENCE SECTION

Sense Trip Voltage (Referenced Voltage)

VCC = 15 V

TA= 25°C

Tlow to Thigh (Note 2)

Line Regulation of VSense

4.5 V ≤ VCC ≤ 40 V; TJ = 25°C

Power Supply Voltage Operating Range

Power Supply Current

VCC = 40 V; TA = 25°C; No Output Loads

O.V. Sense (Pin 3) = 0 V;

U.V. Sense (Pin 4) = VCC

O.V. Sense (Pin 3) = VCC;

U.V. Sense (Pin 4) = 0 V

VSense

Regline

VCC

ICC(off)

ICC(on)

2.4

2.5

2.33

2.5

−

7.0

4.5

−

−

8.5

−

16.5

INPUT SECTION

Input Bias Current, O.V. and U.V. Sense

Hysteresis Activation Voltage, U.V. Sense

VCC = 15 V; TA = 25°C;

IH = 10%

IH = 90%

Hysteresis Current, U.V. Sense

VCC = 15 V; TA = 25°C; U.V. Sense (Pin 4) = 2.5 V

Delay Pin Voltage (IDLY = 0 mA)

Low State

High State

Delay Pin Source Current

VCC = 15 V; VDLY = 0 V

Delay Pin Sink Current

VCC = 15 V; VDLY = 2.5V

OUTPUT SECTION

Drive Output Peak Current (TA = 25°C)

Drive Output Voltage

IDRV = 100 mA; TA = 25° C

Drive Output Leakage Current

VDRV = 0 V

Drive Output Current Slew Rate (TA = 25°C)

Drive Output VCC Transient Rejection

VCC = 0 V to 15 V at dV/dt = 200 V μs;

O.V. Sense (Pin 3) = 0 V; TA = 25°C

Indicator Output Saturation Voltage

IIND = 30 mA; TA = 25°C

Indicator Output Leakage Current

VOH(IND) = 40 V

Output Comparator Threshold Voltage (Note 3)

Propagation Delay Time

(VCC = 15 V; TA = 25°C)

Input to Drive Output or Indicator Output

100 mV Overdrive, CDLY = 0 μF

Input to Delay

2.5 V Overdrive (0 V to 5.0 V Step)

IIB

VH(act)

IH

−

1.0

−

0.6

−

0.8

9.0

12.5

VOL(DLY)

VOH(DLY)

IDLY(source)

IDLY(sink)

−

VCC−0.5

140

0.2

VCC−0.15

200

1.8

3.0

IDRV(peak)

VOH(DRV)

IDRV(leak)

di/dt

IDRV(trans)

200

VCC−2.5

300

VCC−2.0

−

15

−

2.0

−

1.0

VIND(sat)

−

560

IIND(leak)

−

25

Vth(OC)

2.33

2.5

tPLH(IN/OUT)

−

1.7

tPLH(IN//DLY)

−

700

NOTES: 2. Tlow to Thigh = 0° to +70°C

3. The Vth(OC) limits are approximately the VSense limits over the applicable temperature range.

Max

2.6

2.63

15

40

10

19

2.0

−

−

16

0.5

−

260

−

−

−

200

−

−

800

200

2.63

−

−

Unit

Vdc

mV

Vdc

mA

mA

μA

V

μA

V

μA

mA

mA

V

nA

A/μs

mA

(Peak)

mV

nA

V

μs

ns

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