CR250
Alternator regulator for 28V systems
Application & Technical Summary
CR250 regulates the output voltage of a 28 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 LIN commands, the output voltage can be set to any desired value within the given range.
Product benefits
- Fully integrated alternator regulator
- LIN single wire interface
- Load response function
- Compliant to VDA LIN alternator regulator specification
- Various customer programming options at end of line
22.0 – 31.0 V set voltage
output voltage stabilized to constant value
Technical Features
Type
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Voltage regulator for 28V alternators
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Package
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Bare-die
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Robustness of operation
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Wake-up from V terminal if communication is missing
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Functions to protect alternator and battery
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Features
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Communication features
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LIN2.1 physical interface (12 V and 24 V) LIN2.1 and LIN1.3 compatible data link layer |
Operating voltage
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13 – 36 V
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Extended operating voltage
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8 – 54 V
|
Set voltage bzw. B+ |
22.0 – 31.0 V
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Setting |
LIN
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Regulation |
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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175°C
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