CR636
Alternator regulator for 14V systems with RVC interface
Application & Technical Summary
CR636 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. Via PWM commands, the output voltage can be set to any desired value within the given range.
Product benefits
- Fully integrated alternator regulator
- Pulse-width modulated regulator
- Load response function
- Multiwatt8 package or bare die
- Various customer programming options at end of line
11.0 – 15.5 V set voltage
via PWM interface
Technical Features
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Type
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Voltage regulator for 14V alternators
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Package
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MultiWatt8
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Robustness of operation
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Wake-up from V terminal if communication is missing
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Function to protect alternator and battery
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Features
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Communication features
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RVC interface acc. to GM specification GMW14036 + Update GMW8778
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Operating voltage
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6.5 – 18 V
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Extended operating voltage
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4 – 37 V
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Set voltage or B+
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11.0 – 15.5 V
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Setting
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PWM
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Regulation
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Digital
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Freewheeling
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Active
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Load response
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Yes
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High temperature shut-off
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Yes
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ESD handling
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all pins: ±8 kV (HBM, 1.5 kOhm, 100 pF to GND)
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Field protection
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Yes
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Tj min [°C]
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-40°C
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Tj max [°C]
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150°C
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-
MultiWatt 8 (in-line)
