NCP305 데이터 시트보기 (PDF) - ON Semiconductor

부품명

상세내역

일치하는 목록

NCP305

Voltage Detector Series

ON Semiconductor 

NCP304, NCP305

VDD

RH

2 Input

VDD

RL

NCP3015

LSQN27T1

1

Reset Output

Microprocessor

Reset

3 GN-

GN-

D

D

Figure 29. Microprocessor Reset Circuit with Additional Hysteresis

Comparator hysteresis can be increased with the addition of

resistor RH. The hysteresis equations have been simplified and

do not account for the change of input current Iin as Vin crosses

the comparator threshold. The internal resistance, Rin is simply

calculated using Iin = 0.26 mA at 2.6 V.

Vin Decreasing:

ǒ Ǔ Vth +

RH

Rin

)

1

ǒVDET*Ǔ

Vin Increasing:

ǒ Ǔ Vth +

RH ) 1

Rin ø RL

ǒVDET*

)

V

Ǔ

HYS

VHYS = Vin Increasing − Vin Decreasing

Test Data

Vth Decreasing

(mV)

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

2.70

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

2.70

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

2.70

ÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁÁ 2.70

Vth Increasing

(mV)

2.84

2.87

2.88

2.91

2.90

2.94

2.98

2.70

3.04

3.15

VHYS

(mV)

RH RL

(W) (kW)

0.135 0

−

0.17 100 10

0.19 100 6.8

0.21 100 4.3

0.20 220 10

0.24 220 6.8

0.28 220 4.3

0.27 470 10

0.34 470 6.8

0.35 470 4.3

5.0 V

100 k

C

2 Input

82 k

NCP3012

HLSNQ27T1

1

Reset Output

3 GN-

D

C (mF)

0.01

0.1

1.0

Test Data

fOSC (kHz)

2590

490

52

IQ (mA)

21.77

21.97

22.07

Figure 30. Simple Clock Oscillator

http://onsemi.com

17

Share Link: