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PDF MC33163 Data sheet ( Hoja de datos )
| Número de pieza | MC33163 | |
| Descripción | (MC33163 / MC33163) Step-Up/Down/Inverting Switching Regulators | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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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*
Ipk Sense 8
VCC 7
Timing
Capacitor
6
− ILimit
+
+
OSC
9
Driver
Collector
10
Switch
Collector
11
5
GND
4
Control Logic
and Thermal
Shutdown
+
12
GND
13
Voltage
Feedback 1
3
Voltage
Feedback 2
2
LVI Output 1
LVI
+
+
−
VFB
+
+
−
+
14
Switch
Emitter
15
16
Bootstrap
Input
(Bottom View)
This device contains 114 active transistors.
Figure 1. Representative Block Diagram
© Semiconductor Components Industries, LLC, 2005
October, 2005 − Rev. 5
1
16
1
http://onsemi.com
MARKING
DIAGRAMS
16
PDIP−16 1
P SUFFIX
CASE 648C
MC3x163P
AWLYYWWG
16
16
1
MC3x163DW
AWLYYWWG
SOIC−16W
DW SUFFIX
CASE 751G 1
x = 3 or 4
A = Assembly Location
WL = Wafer Lot
YY = Year
WW = Work Week
G = Pb−Free Package
PIN CONNECTIONS
LVI Output 1
Voltage Feedback 2 2
Voltage Feedback 1 3
4
GND
5
Timing Capacitor 6
VCC 7
Ipk Sense 8
16 Bootstrap Input
15 Switch
14 Emitter
13
GND
12
11
Switch Collector
10
9 Driver Collector
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
Publication Order Number:
MC34163/D
1 page  
MC34163, MC33163
0
VCC
Darlington Configuration
Emitter Sourcing Current to GND
− 0.4 Pins 7, 8, 10, 11 = VCC
Pins 4, 5, 12, 13 = GND
TA = 25°C, (Note 2)
− 0.8
Bootstrapped, Pin 16 = VCC + 5.0 V
−1.2
−1.6 Non−Bootstrapped, Pin 16 = VCC
− 2.0
0
0.8 1.6 2.4
IE, EMITTER CURRENT (A)
3.2
Figure 8. Output Switch Source Saturation
versus Emitter Current
1.2
1.0 Darlington, Pins 9, 10, 11 Connected
0.8
Grounded Emitter Configuration
0.6 Collector Sinking Current From VCC
Pins 7, 8 = VCC = 15 V
0.4
Pins 4, 5, 12, 13, 14, 15 = GND
TA = 25°C, (Note 2)
0.2 Saturated Switch, RPin9 = 110 W to VCC
GND
0
0 0.8 1.6 2.4 3.2
IC, COLLECTOR CURRENT (A)
Figure 9. Output Switch Sink Saturation
versus Collector Current
0
GND
− 0.4 IC = 10 mA
− 0.8
IC = 10 mA
− 1.2
− 1.6
− 2.0
− 55
VCC = 15 V
Pins 7, 8, 9, 10, 16 = VCC
Pins 4, 6 = GND
Pin 14 Driven Negative
− 25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 10. Output Switch Negative Emitter
Voltage versus Temperature
0.5
VCC = 5 V
0.4 TA = 25°C
0.3
0.2
0.1
0
0 2.0 4.0 6.0 8.0
Isink, OUTPUT SINK CURRENT (mA)
Figure 11. Low Voltage Indicator Output Sink
Saturation Voltage versus Sink Current
254
VCC = 15 V
252
250
248
246
− 55
− 25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 12. Current Limit Comparator Threshold
Voltage versus Temperature
1.6
VCC = 15 V
1.4 VIpk (Sense) = 15 V
1.2
1.0
0.8
0.6
− 55
− 25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
Figure 13. Current Limit Comparator Input Bias
Current versus Temperature
http://onsemi.com
5
5 Page 
MC34163, MC33163
RSC
8
0.25 V
+
−
+
Current
Limit
Vin
12 V
0.075
Cin
+7
+
330
CT
680 pF
6 Oscillator
5
Thermal
R
Q
S
Latch
4
+
9
10
Q1 11
Q2
12
60
13
Low Voltage
Indicator
Output
3
2
1
RLVI
1.0 k
+
+
−
LVI
45 k
+
+
+
−
Feedback
Comparator
1.25 V 15 k
2.0 mA
+
1.125 V
7.0 V
+
14
15
16
R1
2.2 k
R2
47 k
(Bottom View)
180 mH
L Coilcraft
LO451−A
1N5822
+ CO
330
Vout
28 V/600 mA
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Condition
Vin = 9.0 V to 16 V, IO = 0.6 A
Vin = 12 V, IO = 0.1 A to 0.6 A
Vin = 12 V, IO = 0.6 A
Vin = 12 V, IO = 0.6 A
Figure 23. Step−Up Converter
Results
30 mV = ± 0.05%
50 mV = ± 0.09%
140 mVpp
88.1%
89
89
7
+
6
5
10
Q1 11
Q2
12
7
+
6
5
10
Q1 11
Q2
12
4 + 13
3 14 Q3
2 15
4 + 13
3 14 Q3
2 15
1 16
+
(Bottom View)
Figure 24A. External NPN Switch
1 16
+
(Bottom View)
Figure 24B. External PNP Saturated Switch
Figure 24. External Current Boost Connections for Ipk (Switch) Greater Than 3.4 A
http://onsemi.com
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MC33163.PDF ] | |
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