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PDF MC33163 Data sheet ( Hoja de datos )
| Número de pieza | MC33163 | |
| Descripción | POWER SWITCHING REGULATORS | |
| Fabricantes | Motorola Semiconductors | |
| Logotipo |  |
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Power 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.
• 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
MC34163
MC33163
POWER SWITCHING
REGULATORS
SEMICONDUCTOR
TECHNICAL DATA
16
1
P SUFFIX
PLASTIC PACKAGE
CASE 648C
(DIP–16)
16
1
DW SUFFIX
PLASTIC PACKAGE
CASE 751G
(SOP–16L)
Representative Block Diagram
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.
MOTOROLA ANALOG IC DEVICE DATA
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
Device
Operating
Temperature Range Package
MC34163DW
MC34163P
TA = 0° to +70°C
SOP–16L
DIP–16
MC33163DW
MC33163P TA = – 40° to +85°C
SOP–16L
DIP–16
© Motorola, Inc. 1996
Rev 2
1
1 page  
MC34163 MC33163
Figure 9. Output Switch Negative Emitter
Voltage versus Temperature
0
Gnd
– 0.4 IC = 10 µA
Figure 10. Low Voltage Indicator Output Sink
Saturation Voltage versus Sink Current
0.5
VCC = 5 V
0.4 TA = 25°C
– 0.8
– 1.2
– 1.6
– 2.0
– 55
IC = 10 mA
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)
0.3
0.2
0.1
0
0
2.0 4.0 6.0
Isink, OUTPUT SINK CURRENT (mA)
8.0
Figure 11. Current Limit Comparator Threshold
Voltage versus Temperature
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 Input Bias
Current 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. Standby Supply Current
versus Supply Voltage
8.0
6.0
4.0
Pins 7, 8, 16 = VCC
2.0 Pins 4, 6, 14 = Gnd
Remaining Pins Open
TA = 25°C
0
0 10 20 30 40
VCC, SUPPLY VOLTAGE (V)
Figure 14. Standby Supply Current
versus Temperature
7.2
VCC = 15 V
Pins 7, 8, 16 = VCC
6.4 Pins 4, 6, 14 = Gnd
Remaining Pins Open
5.6
4.8
4.0
– 55
– 25 0 25 50 75 100 125
TA, AMBIENT TEMPERATURE (°C)
MOTOROLA ANALOG IC DEVICE DATA
5
5 Page 
MC34163 MC33163
Figure 22. Step–Up Converter
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
–
LVI
1.0 k
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 µH
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
Results
30 mV = ± 0.05%
50 mV = ± 0.09%
140 mVpp
88.1%
Figure 23. External Current Boost Connections for Ipk (Switch) Greater Than 3.4 A
Figure 23A. External NPN Switch
Figure 23B. External PNP Saturated Switch
89
7
+
6
5
10
Q1 11
Q2
12
4 + 13
3 14 Q3
2 15
1 16
+
(Bottom View)
89
7
+
6
5
10
Q1 11
Q2
12
4 + 13
3 14 Q3
2 15
1 16
+
(Bottom View)
MOTOROLA ANALOG IC DEVICE DATA
11
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet MC33163.PDF ] | |
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