MC34063A: Buck / Boost / Inverting Regulator, Switching, 1.5 A

The MC34063A Series is a monolithic control circuit containing the primary functions required for dc-to-dc converters. These Buck Boost Inverting Switching Regulators 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 (Buck), Step up (Boost) and Voltage-Inverting applications with a minimum number of external components. Refer to Application Notes AN920A/D and AN954/D for additional design information. The MC33063 is an extended temperature version. The NCV33063 is an extended temp version for automotive.

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
4x4mm DFN package option
MC34063A = 0 to +70degC
MC33063A = -40 to +85degC
MC33063AV / NCV33063A = -40 to +125degC

Benefits

Wide input voltage range usable for many applications
<100uA Collector Off-State Current
Adjustable current limit provides improved protection
Large 1.5A peak current capability provides up to ~1A of average current output
External resistor divider for various output voltage options
Optimize frequency for size or efficiency
Accurate system level performance
Exposed pad package allows for higher output current and improved thermal performance

Applications

For Higher Switching Frequency See NCP3063
For Dedicated ENABLE Pin and Higher Switching Frequency See NCP3064
Fan Controller
DC-DC Power Supply
For DFN package see MC33063MNTXG

End Products

Cigarette Lighter Adapter (CLA)
Power Supply

Design & Development Tools (1)

Document Title	Document ID/Size	Revision	Revision Date
MC34063 Design Worksheet	MC34063 DWS.XLS (283.0kB)	0

Package Drawings (2)

Document Title	Document ID/Size	Revision
8 LEAD PDIP	626-05 (35.0kB)	P
SOIC-8 Narrow Body	751-07 (62.6kB)	AK

Application Notes (1)

Document Title	Document ID/Size	Revision	Revision Date
Theory and Applications of the MC34063 and �A78S40 Switching Regulator Circuits	AN920/D (416kB)	6

Simulation Models (6)

Document Title	Document ID/Size	Revision	Revision Date
MC34063A Evaluation Circuit Simulation	MC34063A SPICE MODELS (70.0kB)	0
MC34063A IsSpice model - 3V Buck Boost	MC34063A 3V BUCK BOOST (79.0kB)	0
MC34063A IsSpice model - Boost	MC34063A BOOST (70.0kB)	0
MC34063A IsSpice model - Buck	MC34063A BUCK (66.0kB)	0
MC34063A ORCAD MODELS	MC34063A ORCAD MODELS (26.0kB)	0
MC34063A SPICE MODEL	MC34063A SPICE MODEL (70.0kB)	0

Evaluation Board Documents (32)

Document Title	Document ID/Size	Revision
MC34063LBBGEVB Bill of Materials ROHS Compliant	MC34063LBBGEVB_BOM_ROHS.PDF (589.0kB)	0
MC34063LBBGEVB Gerber Layout Files (Zip Format)	MC34063LBBGEVB_GERBER.ZIP (212.0kB)	1
MC34063LBBGEVB Schematic	MC34063LBBGEVB_SCHEMATIC.PDF (1595.0kB)	1
MC34063LBBGEVB Test Procedure	MC34063LBBGEVB_TEST_PROCEDURE.PDF (651.0kB)	1
MC34063LBGEVB Bill of Materials ROHS Compliant	MC34063LBGEVB_BOM_ROHS.PDF (136.0kB)	1
MC34063LBGEVB Gerber Layout Files (Zip Format)	MC34063LBGEVB_GERBER.ZIP (212.0kB)	1
MC34063LBGEVB Schematic	MC34063LBGEVB_SCHEMATIC.PDF (67.0kB)	1
MC34063LBGEVB Test Procedure	MC34063LBGEVB_TEST_PROCEDURE.PDF (63.0kB)	1
MC34063LBKEV Bill of Material (ROHS Compliant)	MC34063LBKEVB_BOM_ROHS.PDF (40kB)	1
MC34063LBKEVB Gerber Layout Files (Zip Format)	MC34063LBKEVB_GERBER.ZIP (212.0kB)	1
MC34063LBKEVB Schematic	MC34063LBKEVB_SCHEMATIC.PDF (68.0kB)	1
MC34063LBKEVB Test Procedure	MC34063LBKEVB_TEST_PROCEDURE.PDF (68.0kB)	1
MC34063LINVEVB Bill of Materials ROHS Compliant	MC34063LINVEVB_BOM_ROHS.PDF (55.0kB)	0
MC34063LINVEVB Gerber Layout Files (Zip Format)	MC34063LINVEVB_GERBER.ZIP (212.0kB)	1
MC34063LINVEVB Schematic	MC34063LINVEVB_SCHEMATIC.PDF (68.0kB)	1
MC34063LINVEVB Test Procedure	MC34063LINVEVB_TEST_PROCEDURE.PDF (68.0kB)	1
MC34063SMDBBGEVB Bill of Materials ROHS Compliant	MC34063SMDBBGEVB_BOM_ROHS.PDF (62.0kB)	0
MC34063SMDBBGEVB Gerber Layout Files (Zip Format)	MC34063SMDBBGEVB_GERBER.ZIP (212.0kB)	1
MC34063SMDBBGEVB Schematic	MC34063SMDBBGEVB_SCHEMATIC.PDF (82.0kB)	0
MC34063SMDBBGEVB Test Procedure	MC34063SMDBBGEVB_TEST_PROCEDURE.PDF (104.0kB)	1
MC34063SMDBGEVB Bill of Materials ROHS Compliant	MC34063SMDBGEVB_BOM_ROHS.PDF (58.0kB)	0
MC34063SMDBGEVB Gerber Layout Files (Zip Format)	MC34063SMDBGEVB_GERBER.ZIP (212.0kB)	1
MC34063SMDBGEVB Schematic	MC34063SMDBGEVB_SCHEMATIC.PDF (67.0kB)	1
MC34063SMDBGEVB Test Procedure	MC34063SMDBGEVB_TEST_PROCEDURE.PDF (68.0kB)	1
MC34063SMDBKGEVB Bill of Materials ROHS Compliant	MC34063SMDBKGEVB_BOM_ROHS.PDF (79.0kB)	0
MC34063SMDBKGEVB Gerber Layout Files (Zip Format)	MC34063SMDBKGEVB_GERBER.ZIP (212.0kB)	1
MC34063SMDBKGEVB Schematic	MC34063SMDBKGEVB_SCHEMATIC.PDF (514.0kB)	1
MC34063SMDBKGEVB Test Procedure	MC34063SMDBKGEVB_TEST_PROCEDURE.PDF (523.0kB)	1
MC34063SMDINVEVB Bill of Materials RoHS Compliant	MC34063SMDINVEVB_BOM_ROHS.PDF (55.0kB)	0
MC34063SMDINVEVB Gerber Layout Files (Zip Format)	MC34063SMDINVEVB_GERBER.zip (212.0kB)

Data Sheets (1)

Document Title	Document ID/Size	Revision	Revision Date
Buck / Boost / Inverting Regulator, Switching, 1.5 A	MC34063A/D (1137kB)	24

Evaluation/Development Tool Information

Product	Status	Compliance	Short Description
MC34063LBBGEVB	Active	Pb-free	Switching Control Circuit Evaluation Board
MC34063LBGEVB	Active	Pb-free	Boost Regulator Evaluation Board
MC34063LBKEVB	Active		Leaded Buck Regulator Evaluation Board
MC34063LINVEVB	Active		Inverting Regulator Evaluation Board
MC34063SMDBBGEVB	Active	Pb-free	Buck-Boost Regulator Evaluation Board
MC34063SMDBGEVB	Active	Pb-free	Switching Control Circuit Evaluation Board
MC34063SMDBKGEVB	Active	Pb-free	MC34063 PB-FREE EVAL BOAR
MC34063SMDINVEVB	Active		SMD Voltage Inverting Regulator Evaluation Board

Order Information

Product	Status	Compliance	Package		MSL*	Container		Budgetary Price/Unit
MC34063ADG	Active	Pb-free Halide free	SOIC-8	751-07	1	Tube	98	$0.3703
MC34063ADR2G	Active	Pb-free Halide free	SOIC-8	751-07	1	Tape and Reel	2500	$0.3703
MC34063AP1G	Active	Pb-free Halide free	PDIP-8	626-05	NA	Tube	50	$0.396
MCX34063ADR2G	Consult Sales Office	Pb-free Halide free	SOIC-8	751-07	1	Tape and Reel	2500

Specifications

Product	Topology	Control Mode	VCC Min (V)	VCC Max (V)	VO Typ (V)	IO Typ (A)	fSW Typ (kHz)
MC34063ADG	Step-Up/Step-Down Step-Down Step-Up	Voltage Mode	3	40	1.25 to 40	1.5	100
MC34063ADR2G	Step-Up Step-Up/Step-Down Step-Down	Voltage Mode	3	40	1.25 to 40	1.5	100
MC34063AP1G	Step-Up/Step-Down Step-Down Step-Up	Voltage Mode	3	40	1.25 to 40	1.5	100