mc33092 Unisonic Technologies, mc33092 Datasheet - Page 3

• Manufacturer Part Number: mc33092
• Description: Alternator Voltage Regulator
• Manufacturer: Unisonic Technologies

UTC MC33092 LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
NOTE: * Pins 8, 9 and 20(24**) are test points only.
UTC
Package
20-pin
6, 15
15,6
10
11
12
13
14
16
17
18
19
20
1
2
3
4
5
7
8
9
** For 24-pin package.
PIN No.
16,17,18,
Package
24-pin
19,20
6,15
15,6
24**
10
11
12
13
14
21
22
23
1
2
4
5
7
8
9
3
UNISONIC TECHNOLOGIES CO., LTD.
Oscillator Adjust A resistor to ground on this pin adjusts the internal oscillator frequency.
Power-Up/Down
Lamp Collector
Undervoltage
PIN NAME
Lamp Base
Oscillator *
Regulation
Ground
Ground
Ground
Source
Vref0 *
Supply
Sense
Phase
VCC3
VCC1
Vref *
Rate
Gate
N/C
and
FB
This pin provides a filtered result of the Sense input (if the Sense input
is used) or the Supply Regulation input (if the Sense input is not used).
The Sense input is a remote, low current battery voltage reference
input used to give an accurate representation of the true battery
voltage. This input is also used to monitor overvoltage or load dump
conditions.
This pin connects to the collector of the transistor (Q2) used to drive
the fault lamp. It is also used to sense a closed ignition switch (voltage
sense) which then turns power on to the IC.
The Lamp Base pin provides base current to the fault lamp drive
transistor (Q2).
Grounded to provide a ground return for the fault lamp control logic
circuit.
IC ground reference pins.
This is a test point for the 1.1 V to 1.4 V reference voltage. It has a zero
temperature coefficient. The reference is used internally for phase
signal and undervoltage detection.
Test point for checking the operation of the internal oscillator.
The Phase input detects the existence of a magnetic field rotating
within the alternator.
The Rate pin is used to select a slow mode (floating) or fast mode
(ground) Load
Response Control recovery rate.
The voltage on the Supply Regulation pin is used as a representation
of the alternator output voltage. This input also used to monitor
overvoltage or load dump conditions.
Positive supply for the internal Charge Pump.
Positive supply for the entire IC except for the Charge Pump.
Ground reference for the IC.
No connection.
Controls the Gate of the MOSFET used to energize the field winding.
Field winding control MOSFET source reference.
If the voltage at this pin goes below 1.0 V, the fault lamp is guaranteed
to turn on. The IC will continue to function, but with limited
performance.
Test point for the 1.7 V to 2.3 V Bandgap reference voltage. This
voltage has a negative temperature coefficient of approximately –11
mV/ G C.
DESCRIPTION
QW-R121-006,A
3