HA16129 Ver la hoja de datos (PDF) - Hitachi -> Renesas Electronics

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HA16129

Single Watchdog Timer

Hitachi -> Renesas Electronics 

HA16129FPJ

Test Circuits

• Vout test circuit

VCC

Icont

A

Units: Resistors — Ω

Capacitors — F

Vout

VCC

STBY

NMI

RES

CS

CONT

HA16129FPJ

Vout

STBYadj

NMIsns

f = 1kHz

duty = 50%

Voadj

NMIadj

P-RUN

Rf

Cf

RR CR RT GND CRES

180k 3300p 180k 0.1µ 390k

1500p

Here, the Vout voltage is for a VCC

of 12V, and Icont is monitored as

Vout is varied.

• ICC test circuit

IIN

VCC

VCC

STBY

NMI

RES

CS

CONT

HA16129FPJ

Vout

STBYadj

NMIsns

f = 1kHz

duty = 50%

Voadj

NMIadj

P-RUN

Rf

Cf

RR CR RT GND CRES

180k 3300p 180k 0.1µ 390k

1500p

Iout

Vout

*ICC = IIN + Iout

• Test circuit for other parameters

VCC

VCC

STBY

NMI

RES

CS

CONT

HA16129FPJ

Vout

STBYadj

NMIsns

Voadj

NMIadj

V

P-RUN

Rf

Cf

RR CR RT GND CRES

f = 1kHz

duty = 50%

180k 3300p 180k

0.1µ 390k

1500p

NMI Vout

detection

R1

13k

NMI VCC

detection

R2

390k

16

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