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Motorola Electronic Components Datasheet

MC33163 Datasheet

POWER SWITCHING REGULATORS

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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


Motorola Electronic Components Datasheet

MC33163 Datasheet

POWER SWITCHING REGULATORS

No Preview Available !

MC34163 MC33163
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
Switch Collector Voltage Range
Switch Emitter Voltage Range
Switch Collector to Emitter Voltage
Switch Current (Note 1)
Driver Collector Voltage
Driver Collector Current
Bootstrap Input Current Range (Note 1)
Current Sense Input Voltage Range
Feedback and Timing Capacitor Input
Voltage Range
VCC
40
VC(switch)
–1.0 to + 40
VE(switch)
– 2.0 to VC(switch)
VCE(switch)
40
ISW 3.4
VC(driver)
–1.0 to +40
IC(driver)
150
IBS –100 to +100
VIpk (Sense) (VCC–7.0) to (VCC+1.0)
Vin –1.0 to + 7.0
V
V
V
V
A
V
mA
mA
V
V
Low Voltage Indicator Output Voltage
Range
VC(LVI)
–1.0 to + 40
V
Low Voltage Indicator Output Sink Current
Thermal Characteristics
P Suffix, Dual–In–Line Case 648C
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case
(Pins 4, 5, 12, 13)
DW Suffix, Surface Mount Case 751G
Thermal Resistance, Junction–to–Air
Thermal Resistance, Junction–to–Case
(Pins 4, 5, 12, 13)
IC(LVI)
RθJA
RθJC
RθJA
RθJC
10 mA
°C/W
80
15
94
18
Operating Junction Temperature
Operating Ambient Temperature (Note 3)
MC34163
MC33163
TJ
TA
+150
0 to +70
– 40 to + 85
°C
°C
Storage Temperature Range
Tstg
– 65 to +150
°C
ELECTRICAL CHARACTERISTICS (VCC = 15 V, Pin 16 = VCC, CT = 620 pF, for typical values TA = 25°C, for min/max values TA is
the operating ambient temperature range that applies (Note 3), unless otherwise noted.)
Characteristic
Symbol Min Typ Max Unit
OSCILLATOR
Frequency
TA = 25°C
Total Variation over VCC = 2.5 V to 40 V, and Temperature
Charge Current
Discharge Current
Charge to Discharge Current Ratio
Sawtooth Peak Voltage
Sawtooth Valley Voltage
FEEDBACK COMPARATOR 1
Threshold Voltage
TA = 25°C
Line Regulation (VCC = 2.5 V to 40 V, TA = 25°C)
Total Variation over Line, and Temperature
fOSC
Ichg
Idischg
Ichg/Idischg
VOSC(P)
VOSC(V)
Vth(FB1)
46
45
8.0
4.9
4.85
50
225
25
9.0
1.25
0.55
5.05
0.008
kHz
54
55
µA
µA
10 –
–V
–V
5.2 V
0.03 %/V
5.25 V
Input Bias Current (VFB1 = 5.05 V)
IIB(FB1) – 100
NOTES: 1. Maximum package power dissipation limits must be observed.
2. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
3. Tlow = 0°C for MC34163
= – 40°C for MC33163
Thigh = + 70°C for MC34163
= + 85°C for MC33163
200 µA
2 MOTOROLA ANALOG IC DEVICE DATA


Part Number MC33163
Description POWER SWITCHING REGULATORS
Maker Motorola
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MC33163 Datasheet PDF






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