CR719

Application & Technical Summary

CR719 regulates the output voltage of a 14 V alternator to a constant value.

The regulator continuously senses the alternator’s output voltage, rpm, temperature, excitation current. It adjusts the excitation current to keep the output voltage on a constant level.

Product benefits

Fully integrated alternator regulator
MFR Multi functional regulator
Load response function
Available in Multiwatt8 or bare die

14.55 V regulation voltage

output voltage stabilized to constant value (CR719N: 14.25 V)

Technical Features


Type	Voltage regulator for 14V alternators
Package	MultiWatt8
Robustness of operation	Self start from V terminal
Functions to protect alternator and battery	Power stage shutdown at extreme temperature Short circuit protection / recovery on DF power stage
Features	Short circuit protection / recovery on DF power stage High-side DMOS regulated dynamo field (DF) by fixed frequency PWM Integrated freewheeling diode on DF DF duty cycle range up to 100 % LR Boost and fast loads Active handling of over-voltage Accepts jump start with 28 V
Operating voltage	7.5 – 24 V
Extended operating voltage	4 – 24 V
Set voltage or B+	14.55 V or 14.25 V (CR719N)
Setting	Fixed
Regulation	Analog
Freewheeling	Passive
Load response	Yes
High temperature shut-off	Yes
ESD handling	all pins: ±8 kV (HBM, 1.5 kOhm, 100 pF to GND) except DFM ±2 kV
Field protection	Yes
Tj min [°C]	-40°C
Tj max [°C]	150°C

MultiWatt 8 (in-line)

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CR719

Application & Technical Summary

14.55 V regulation voltage

Technical Features

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Product information

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