Document
Inverting Regulator - Buck, Boost, Switching
1.5 A
MC34063A, MC33063A, SC33063A, NCV33063A
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 • NCV Prefix for Automotive and Other Applications Requiring
Unique Site and Control Change Requirements; AEC−Q100 Qualified and PPAP Capable
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Drive 8 Collector
S Q Q2
1 Switch Collector
Ipk 7 Sense
R 100
Ipk Oscillator
CT
Q1
2 Switch Emitter
6 VCC
Comparator 5 Inverting Input
Comparator + -
1.25 V Reference Regulator
(Bottom View)
3 Timing Capacitor
4 GND
This device contains 79 active transistors.
Figure 1. Representative Schematic Diagram
DATA SHEET www.onsemi.com
8 1
SOIC−8 D SUFFIX CASE 751
MARKING DIAGRAMS
8
3x063 ALYWA
G 1
8
3x063V 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
ORDERING INFORMATION
See detailed ordering and shipping information in the package dimensions section on page 12 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
1
May, 2023 − Rev. 26
Publication Order Number: MC34063A/D
MC34063A, MC33063A, SC33063A, NCV33063A
Switch Collector
1
Switch Emitter
2
Timing 3 Capacitor
GND 4
8
Driver Collector
7 Ipk Sense
(Top View)
6 VCC
Comparator 5 Inverting
Input
ÇÇ Switch Collector ÇÇ Switch Emitter ÇÇ Timing Capacitor
ÇÇÇÇ GND
EP Flag
ÇDriver Collector ÇIpk Sense ÇVCC ÇComparator ÇInverting Input
(Top View)
Figure 2. Pin Connections
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage Comparator Input Voltage Range Switch Collector Voltage Switch Emitter Voltage (VPin 1 = 40 V) Switch Collector to Emitter Voltage Driver Collector Voltage Driver Collector Current (Note 1) Switch Current Power Dissipation and Thermal Characteristics
VCC
40
Vdc
VIR
−0.3 to + 40
Vdc
VC(switch)
40
Vdc
VE(switch)
40
Vdc
VCE(switch)
40
Vdc
VC(driver)
40
Vdc
IC(driver)
100
mA
ISW
1.5
A
Plastic Package, P, P1 Suffix
TA = 25°C Thermal Resistance SOIC Package, D Suffix
PD RqJA
1.25
W
115
°C/W
TA = 25°C Thermal Resistance Thermal Resistance DFN Package TA = 25°C Thermal Resistance Operating .