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MC34163_05 Datasheet(PDF) 1 Page - ON Semiconductor

Part No. MC34163_05
Description  3.4 A, Step−Up/Down/Inverting Switching Regulators
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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© Semiconductor Components Industries, LLC, 2005
October, 2005 − Rev. 5
1
Publication Order Number:
MC34163/D
MC34163, MC33163
3.4 A, Step−Up/Down/
Inverting Switching
Regulators
The MC34163 series are monolithic power switching regulators that
contain the primary functions required for dc−to−dc converters. This
series is specifically designed to be incorporated in step−up,
step−down, and voltage−inverting applications with a minimum
number of external components.
These devices consist of two high gain voltage feedback
comparators, temperature compensated reference, controlled duty
cycle oscillator, driver with bootstrap capability for increased
efficiency, and a high current output switch. Protective features consist
of cycle−by−cycle current limiting, and internal thermal shutdown.
Also included is a low voltage indicator output designed to interface
with microprocessor based systems.
These devices are contained in a 16 pin dual−in−line heat tab plastic
package for improved thermal conduction.
Features
Output Switch Current in Excess of 3.0 A
Operation from 2.5 V to 40 V Input
Low Standby Current
Precision 2% Reference
Controlled Duty Cycle Oscillator
Driver with Bootstrap Capability for Increased Efficiency
Cycle−by−Cycle Current Limiting
Internal Thermal Shutdown Protection
Low Voltage Indicator Output for Direct Microprocessor Interface
Heat Tab Power Package
Moisture Sensitivity Level (MSL) Equals 1
Pb−Free Packages are Available*
16
9
10
11
12
13
14
15
8
7
6
5
4
3
2
Control Logic
and Thermal
Shutdown
LVI
OSC
+
+
Voltage
Feedback 2
Voltage
Feedback 1
GND
Timing
Capacitor
VCC
Ipk Sense
Bootstrap
Input
Switch
Emitter
GND
Switch
Collector
Driver
Collector
+
+
+
ILimit
VFB
Figure 1. Representative Block Diagram
(Bottom View)
+
+
+
1
LVI Output
This device contains 114 active transistors.
116
15
14
13
12
11
10
9
2
3
4
5
6
7
8
(Top View)
LVI Output
Voltage Feedback 2
Voltage Feedback 1
GND
Timing Capacitor
VCC
Ipk Sense
Bootstrap Input
Switch
Emitter
GND
Switch Collector
Driver Collector
PIN CONNECTIONS
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
ORDERING INFORMATION
MARKING
DIAGRAMS
x
= 3 or 4
A
= Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G
= Pb−Free Package
PDIP−16
P SUFFIX
CASE 648C
1
16
SOIC−16W
DW SUFFIX
CASE 751G
http://onsemi.com
16
1
MC3x163DW
AWLYYWWG
16
1
MC3x163P
AWLYYWWG
16
1
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.




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