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PDF MC34063A Data sheet ( Hoja de datos )
| Número de pieza | MC34063A | |
| Descripción | Step−Up / Down / Inverting Switching Regulators | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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 1. Datasheet PDF - SMPS Controller  Hay una vista previa y un enlace de descarga de MC34063A (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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MC34063A, MC33063A,
NCV33063A
1.5 A, Step−Up/Down/
Inverting Switching
Regulators
The MC34063A Series is a monolithic control circuit containing the
primary functions required for DC−to−DC converters. These devices
consist of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit,
driver and high current output switch. This series was specifically
designed to be incorporated in Step−Down and Step−Up and
Voltage−Inverting applications with a minimum number of external
components. Refer to Application Notes AN920A/D and AN954/D
for additional design information.
Features
• Operation from 3.0 V to 40 V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5 A
• Output Voltage Adjustable
• Frequency Operation to 100 kHz
• Precision 2% Reference
• Pb−Free Packages are Available
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Drive 8
Collector
Ipk 7
Sense
6
VCC
Comparator 5
Inverting
Input
S Q Q2
R
100
Q1
Ipk
Oscillator
CT
Comparator
+ 1.25 V
Reference
− Regulator
1
Switch
Collector
2 Switch
Emitter
3 Timing
Capacitor
4
GND
(Bottom View)
This device contains 51 active transistors.
Figure 1. Representative Schematic Diagram
http://onsemi.com
8
1
SOIC−8
D SUFFIX
CASE 751
MARKING
DIAGRAMS
8
3x063
ALYWA
G
1
8
1
PDIP−8
P, P1 SUFFIX
CASE 626
8
3x063AP1
AWL
YYWWG
1
8
33063AVP
AWL
YYWWG
1
x
A
L, WL
Y, YY
W, WW
G or G
= 3 or 4
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONNECTIONS
Switch
Collector
Switch
Emitter
1
2
Timing 3
Capacitor
GND 4
8
Driver
Collector
7 Ipk Sense
(Top View)
6 VCC
Comparator
5 Inverting
Input
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 11 of this data sheet.
© Semiconductor Components Industries, LLC, 2007
February, 2007 − Rev. 19
1
Publication Order Number:
MC34063A/D
1 page  
MC34063A, MC33063A, NCV33063A
8
180
7
Rsc
0.22
Vin 6
12 V +
100
5
170 mH
L
1
SQ
R
Q2
Q1
Ipk CT
OSC
VCC
+
− Comp.
1.25 V
Ref
Reg
2
1N5819
3
CT
1500
pF
4
R1 2.2 k
R2
47 k
Vout
28 V/175 mA
+
330 CO
1.0 mH
Vout
+
100
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Output Ripple With Optional Filter
Conditions
Vin = 8.0 V to 16 V, IO = 175 mA
Vin = 12 V, IO = 75 mA to 175 mA
Vin = 12 V, IO = 175 mA
Vin = 12 V, IO = 175 mA
Vin = 12 V, IO = 175 mA
Figure 8. Step−Up Converter
Results
30 mV = ±0.05%
10 mV = ±0.017%
400 mVpp
87.7%
40 mVpp
http://onsemi.com
5
5 Page 
MC34063A, MC33063A, NCV33063A
ORDERING INFORMATION
Device
Package
Shipping†
MC33063AD
SOIC−8
98 Units / Rail
MC33063ADG
SOIC−8
(Pb−Free)
98 Units / Rail
MC33063ADR2
SOIC−8
2500 Units / Tape & Reel
MC33063ADR2G
SOIC−8
(Pb−Free)
2500 Units / Tape & Reel
MC33063AP1
PDIP−8
50 Units / Rail
MC33063AP1G
PDIP−8
(Pb−Free)
50 Units / Rail
MC33063AVD
SOIC−8
98 Units / Rail
MC33063AVDG
SOIC−8
(Pb−Free)
98 Units / Rail
MC33063AVDR2
SOIC−8
MC33063AVDR2G
NCV33063AVDR2*
SOIC−8
(Pb−Free)
SOIC−8
2500 Units / Tape & Reel
NCV33063AVDR2G*
SOIC−8
(Pb−Free)
MC33063AVP
PDIP−8
50 Units / Rail
MC33063AVPG
PDIP−8
(Pb−Free)
50 Units / Rail
MC34063AD
SOIC−8
98 Units / Rail
MC34063ADG
SOIC−8
(Pb−Free)
98 Units / Rail
MC34063ADR2
SOIC−8
2500 Units / Tape & Reel
MC34063ADR2G
SOIC−8
(Pb−Free)
2500 Units / Tape & Reel
MC34063AP1
PDIP−8
50 Units / Rail
MC34063AP1G
PDIP−8
(Pb−Free)
50 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specification Brochure, BRD8011/D.
*NCV33063A: Tlow = −40°C, Thigh = +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and
change control.
http://onsemi.com
11
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet MC34063A.PDF ] | |
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