DataSheet39.com

What is MC33129?

This electronic component, produced by the manufacturer "Motorola Semiconductors", performs the same function as "HIGH PERFORMANCE CURRENT MODE CONTROLLERS".


MC33129 Datasheet PDF - Motorola Semiconductors

Part Number MC33129
Description HIGH PERFORMANCE CURRENT MODE CONTROLLERS
Manufacturers Motorola Semiconductors 
Logo Motorola Semiconductors Logo 


There is a preview and MC33129 download ( pdf file ) link at the bottom of this page.





Total 16 Pages



Preview 1 page

No Preview Available ! MC33129 datasheet, circuit

Order this document by MC34129/D
High Performance
Current Mode Controllers
The MC34129/MC33129 are high performance current mode switching
regulators specifically designed for use in low power digital telephone
applications. These integrated circuits feature a unique internal fault timer
that provides automatic restart for overload recovery. For enhanced system
efficiency, a start/run comparator is included to implement bootstrapped
operation of VCC. Other functions contained are a temperature compensated
reference, reference amplifier, fully accessible error amplifier, sawtooth
oscillator with sync input, pulse width modulator comparator, and a high
current totem pole driver ideally suited for driving a power MOSFET.
Also included are protective features consisting of soft–start,
undervoltage lockout, cycle–by–cycle current limiting, adjustable deadtime,
and a latch for single pulse metering.
Although these devices are primarily intended for use in digital telephone
systems, they can be used cost effectively in many other applications.
Current Mode Operation to 300 kHz
Automatic Feed Forward Compensation
Latching PWM for Cycle–by–Cycle Current Limiting
Continuous Retry after Fault Timeout
Soft–Start with Maximum Peak Switch Current Clamp
Internally Trimmed 2% Bandgap Reference
High Current Totem Pole Driver
Input Undervoltage Lockout
Low Startup and Operating Current
Direct Interface with Motorola SENSEFET Products
MC34129
MC33129
HIGH PERFORMANCE
CURRENT MODE
CONTROLLERS
SEMICONDUCTOR
TECHNICAL DATA
14
1
P SUFFIX
PLASTIC PACKAGE
CASE 646
14
1
D SUFFIX
PLASTIC PACKAGE
CASE 751A
(SO–14)
PIN CONNECTIONS
CSoft–Start 12
7
Gnd
6
Vref 2.5V
5
RT/CT
Sync/Inhibit 4
Input
Simplified Block Diagram
Soft–Start
and
Fault Timer
Start/Run
13 Start/Run
Output
Undervoltage 14
Lockout
VCC
1.25V
Reference
8
Vref 1.25V
X2
Oscillator
Latching
PWM
Error Amp
9
+
10
Noninverting
Input
Inverting
11
Input
Feedback/
1 PWM Input
Drive Out
2
Drive Gnd
3
Ramp Input
Drive Output 1
Drive Ground 2
Ramp Input 3
Sync/Inhibit
Input
4
RT/CT 5
Vref 2.5 V 6
Gnd 7
14 VCC
13 Start/Run Output
12 CSoft–Start
Feedback/
11 PWM Input
10
Error Amp
Inverting Input
9 Error Amp
Noninverting Input
8 Vref 1.25 V
(Top View)
ORDERING INFORMATION
Device
Operating
Temperature Range
Package
MC34129D
MC34129P
TA = 0° to +70°C
SO–14
Plastic DIP
MC33129D
TA = – 40° to +85°C
MC33129P
SO–14
Plastic DIP
MOTOROLA ANALOG IC DEVICE DATA
© Motorola, Inc. 1996
Rev 1
1

line_dark_gray
MC33129 equivalent
MC34129 MC33129
Figure 7. Error Amp Open Loop DC Gain
versus Load Resistance
90
80
70
60 VCC = 10 V
VO = 1.25 V
RL to 1.25 Vref
TA = 25°C
50
0 20 40 60 80 100
RL, OUTPUT LOAD RESISTANCE (k)
Figure 8. Error Amp Output Saturation
versus Sink Current
1.0
VCC = 10 V
Pins 8 to 9, 6 to 10
0.8 Pins 2, 5, 7 to Gnd
TA = 25°C
0.6
0.4
0.2
0
0 2.0 4.0 6.0 8.0
ISink, OUTPUT SINK CURRENT (mA)
Figure 9. Soft–Start Buffer Output Saturation
versus Sink Current
1.0
VCC = 10 V
0.8
Pins 8 to 9
Pins 2, 5, 7, 10, 12 to Gnd
TA = 25°C
0.6
0.4
0.2
0
0 100 200 300 400 500
ISink, OUTPUT SINK CURRENT (µA)
Figure 10. Reference Output Voltage versus
Supply Voltage
3.2
TA = 25°C
Vref 2.5 V, RL = 2.5 k
2.4
1.6 Vref 1.25 V, RL =
0.8
0
0 4.0 8.0 12 16
VCC, SUPPLY VOLTAGE (V)
Figure 11. 1.25 V Reference Output Voltage
Change versus Source Current
0
VCC = 10 V
–4.0
–8.0
–12 +25°C
TA = – 40°C
+85°C
–16
–20
–24
0 2.0 4.0 6.0 8.0 10
Iref, REFERENCE OUTPUT SOURCE CURRENT (mA)
Figure 12. 2.5 V Reference Output Voltage
Change versus Source Current
0
VCC = 10 V
–4.0
–8.0
–12
TA = – 40°C
25°C 85°C
–16
–20
–24
0 0.4 0.8 1.2 1.6 2.0
Iref, REFERENCE OUTPUT SOURCE CURRENT (mA)
MOTOROLA ANALOG IC DEVICE DATA
5


line_dark_gray

Preview 5 Page


Part Details

On this page, you can learn information such as the schematic, equivalent, pinout, replacement, circuit, and manual for MC33129 electronic component.


Information Total 16 Pages
Link URL [ Copy URL to Clipboard ]
Download [ MC33129.PDF Datasheet ]

Share Link :

Electronic Components Distributor


An electronic components distributor is a company that sources, stocks, and sells electronic components to manufacturers, engineers, and hobbyists.


SparkFun Electronics Allied Electronics DigiKey Electronics Arrow Electronics
Mouser Electronics Adafruit Newark Chip One Stop


Featured Datasheets

Part NumberDescriptionMFRS
MC33121The function is LOW VOLTAGE SUBSCRIBER LOOP INTERFACE CIRCUIT. Motorola SemiconductorsMotorola Semiconductors
MC33128The function is POWER MANAGEMENT CONTROLLER. Motorola SemiconductorsMotorola Semiconductors
MC33129The function is HIGH PERFORMANCE CURRENT MODE CONTROLLERS. Motorola SemiconductorsMotorola Semiconductors

Semiconductors commonly used in industry:

1N4148   |   BAW56   |   1N5400   |   NE555   |  

LM324   |   BC327   |   IRF840  |   2N3904   |  



Quick jump to:

MC33     1N4     2N2     2SA     2SC     74H     BC     HCF     IRF     KA    

LA     LM     MC     NE     ST     STK     TDA     TL     UA    



Privacy Policy   |    Contact Us     |    New    |    Search