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MC33095 Schematic ( PDF Datasheet ) - Motorola Semiconductors

Teilenummer MC33095
Beschreibung INTEGRAL ALTERNATOR REGULATOR
Hersteller Motorola Semiconductors
Logo Motorola Semiconductors Logo 




Gesamt 12 Seiten
MC33095 Datasheet, Funktion
Advance Information
Integral Alternator Regulator
The MCCF33095 (Flip–Chip) and MC33095 (Surface Mount) are
regulator control integrated circuits designed for use in automotive 12 V
alternator charging systems. Few external components are required for full
system implementation. These devices provide control for a broad range of
12 V alternator charging systems when used in conjunction with the
appropriate Motorola Power Darlington transistor to control the field current
of the specific alternator.
Both versions have internal detection and protection features to withstand
extreme electrical variations encountered in harsh automotive environments.
Flip–Chip Technology allows the MCCF33095 to operate at higher ambient
temperatures than the surface mount version in addition to withstanding
severe vibration and thermal shock with a high degree of reliability.
Constant Frequency with Variable Duty Cycle Operation
Adjusts System Charging to Compensate for Changes
in Ambient Temperature
Slew Rate Control to Reduce EMI
Lamp Pin to Indicate Abnormal Operating Conditions
Shorted Field Protection
Resumes Normal Operation Once Fault Condition Ceases
Operation from – 40°C to 170°C for Flip–Chip and – 40°C to 125°C
for SO–14
Surface Mount or Solder Bump Processed Flip–Chip Assembly Versions
Order this document by MCCF33095/D
MCCF33095
MC33095
INTEGRAL
ALTERNATOR
REGULATOR
SEMICONDUCTOR
TECHNICAL DATA
3 21
10
4
9
5 678
FLIP–CHIP CONFIGURATION
(Backside View)
Back marking is oriented as shown
4 (8)
Ignition
6 (4)
Oscillator
2 (11)
Sense
10 (14)
Short
Circuit
3 (10)
Stator
Simplified Block Diagram
VCC
1 (12)
Series
Regulator
+
Load Dump
Detection and
Protection
+
Oscillator
VReg
Timer
S
Q
R
S
Q
R
Thermal
Protection
9 (1)
Darlington
Drive
7 (3)
Roll–Off
VHV
One
Shot
5 (5)
Lamp
8 (2)
Ground
This device contains 145 active transistors.
14
1
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
Bump
1
2
3
4
5
6
7
8
9
10
Function
VCC
Sense
Stator
Ignition
Lamp
Oscillator
Roll–Off
Ground
Darlington Drive
Short Circuit
SO–14 (Note 1)
(12)
(11)
(10)
(8)
(5)
(4)
(3)(Note 2)
(2)
(1)
(14)
NOTES: 1. No connections to Pins 3, 6, 7, 9 and 13.
2. Connected to ground internal to package.
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MCCF33095 TA = – 40° to +170°C
MC33095D TA = – 40° to +125°C
Flip–Chip
SO–14
This document contains information on a new product. Specifications and information herein
arMe sOubTjeOctRtoOcLhaAngAe NwiAthLouOt nGotiIcCe. DEVICE DATA
© Motorola, Inc. 1996
Rev 1
1






MC33095 Datasheet, Funktion
MCCF33095 MC33095
FUNCTIONAL DESCRIPTION
Introduction
This ignition control circuit was originally designed and
offered as an MCCF33095 Flip–Chip for use in 12 V
automotive alternator charging systems. The MCCF33095
consists of many protection features which are entailed in a
ten pin flip–chip package. The device was subsequently
made available in a 14 pin surface mount version
(MC33095D). Both versions perform in a similar manner. The
Flip–Chip version has an advantage over the surface mount
version where minimized space and higher operating
ambient temperatures are of major concern. Device
operation and application suggestions for both versions are
given below.
Oscillator
The oscillator frequency is determined by the value of an
external capacitor from the Oscillator pin to ground (see
applications circuit). The oscillator frequency in a typical
application is approximately 175 Hz, but a range of 50 Hz to
500 Hz can reasonably be used. The waveform generated
consists of a positive linear slope followed by relatively fast
negative fall (sawtooth). The flip–flops are reset by the falling
edge of the sawtooth signal as shown on the logic diagram.
The oscillator signal peaks at approximately 3.0 V and
provides the timing required for the device.
Ignition
The Ignition input signal enables the device turn–on when
the Ignition pin voltage is greater than 1.4 V. This signal
normally originates from the ignition switch of automotive
systems.
Sense
The Sense pin functions as a voltage sensor. It
proportionally senses the battery voltage and determines the
amount of time the Darlington transistor is high over the next
cycle. A low voltage at the Sense pin will result in a long duty
cycle for the Darlington while a high voltage produces a short
duty cycle. In the application, proportional control is used to
determine the duty cycle. Proportional control is defined as
the sense ratio of battery voltage, present on the Sense pin,
required to obtain a 20% to 95% duty cycle range in the
application. The 20% duty cycle value will correlate to the
maximum battery in the application. Normally the sense ratio
of battery voltage is an end product trim adjustment.
Lamp
The Lamp output pin functions as a warning indicator for
overvoltage and stopped engine or broken belt conditions
existing in the system.
Stator
The Stator pin senses the voltage from the stator in the
application circuit, and keeps the device powered up while
the stator voltage is high. Furthermore, it acts as a sense for
a stopped engine or broken belt condition. If this condition is
detected, the Stator turns “on” the Lamp.
Power Supply, VCC
The VCC pin powers the entire device and disables all
outputs during any overvoltage condition.
Roll–Off
The Roll–Off pin provides thermal protection for the circuit.
This capability exists, but has not been characterized and is
not tested for at this time. Therefore, it is recommended that
this pin be connected to ground. The surface mount version
has this pin internally connected to ground.
Darlington Drive
The purpose of the Darlington Drive output pin is to turn on
an external power Darlington transistor. The Sense pin
voltage determines the duty cycle of the Darlington. The
oscillator is set to maintain a minimum duty cycle, except
during overvoltage and short circuit conditions.
Short Circuit
The Short Circuit pin monitors the field voltage. When the
Darlington Drive and Short Circuit pins are simultaneously
high for a duration greater than the slew rate period, a short
circuit condition is noted. The detection time required
prevents the device from reacting to false shorts. As a result
of short circuit detection, the output is disabled. During a short
circuit condition, the device automatically retries with a 2%
duty cycle (Darlington “on” time). Once the short circuit
condition ceases, normal device operation resumes.
Application Notes
A capacitor should be used in parallel with the VCC pin to
filter out noise transients on the supply or battery line.
Likewise, a capacitor should be used in parallel with the
Sense pin to create a dominant closed loop pole. Resistors
connected to inputs, as mentioned in Notes 1 through 5 of the
Electrical Characteristic table, should be used.
6 MOTOROLA ANALOG IC DEVICE DATA

6 Page









MC33095 pdf, datenblatt
MCCF33095 MC33095
Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding
the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and
specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters which may be provided in Motorola
data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All operating parameters, including “Typicals”
must be validated for each customer application by customer’s technical experts. Motorola does not convey any license under its patent rights nor the rights of
others. Motorola products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other
applications intended to support or sustain life, or for any other application in which the failure of the Motorola product could create a situation where personal injury
or death may occur. Should Buyer purchase or use Motorola products for any such unintended or unauthorized application, Buyer shall indemnify and hold Motorola
and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs, damages, and expenses, and reasonable attorney fees
arising out of, directly or indirectly, any claim of personal injury or death associated with such unintended or unauthorized use, even if such claim alleges that Motorola
was negligent regarding the design or manufacture of the part. Motorola and
are registered trademarks of Motorola, Inc. Motorola, Inc. is an Equal
Opportunity/Affirmative Action Employer.
How to reach us:
USA / EUROPE / Locations Not Listed: Motorola Literature Distribution;
P.O. Box 20912; Phoenix, Arizona 85036. 1–800–441–2447 or 602–303–5454
MFAX: [email protected] – TOUCHTONE 602–244–6609
INTERNET: http://Design–NET.com
JAPAN: Nippon Motorola Ltd.; Tatsumi–SPD–JLDC, 6F Seibu–Butsuryu–Center,
3–14–2 Tatsumi Koto–Ku, Tokyo 135, Japan. 03–81–3521–8315
ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd.; 8B Tai Ping Industrial Park,
51 Ting Kok Road, Tai Po, N.T., Hong Kong. 852–26629298
12
MOTOROLA ANALOG IC DEVICE DATA
*MCCF3309M5CC/F3D309*5/D

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