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
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MARKING
DIAGRAMS
16
16
1
PDIP−16
1
P SUFFIX
CASE 648C
16
16
1
SOIC−16W
DW SUFFIX
CASE 751G
x
A
WL
YY
WW
G
MC3x163DW
AWLYYWWG
1
MC3x163P
AWLYYWWG
•
•
•
•
•
•
•
•
•
•
•
•
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*
8
-
+
= 3 or 4
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
I
pk
Sense
I
Limit
9
Driver
Collector
PIN CONNECTIONS
LVI Output
1
2
3
4
16 Bootstrap Input
15
14
13
GND
5
12
11
10
Switch Collector
6
7
8
(Top View)
Switch
Emitter
V
CC
Timing
Capacitor
7
+
10
Switch
Collector
11
Voltage Feedback 2
Voltage Feedback 1
GND
6
OSC
5
GND
4
Voltage
Feedback 1
Voltage
Feedback 2
LVI Output
3
Control Logic
and Thermal
Shutdown
+
12
GND
13
14
Timing Capacitor
V
CC
I
pk
Sense
9 Driver Collector
2
LVI
1
+
+
-
+
+
-
VFB
15
Switch
Emitter
ORDERING INFORMATION
16
+
Bootstrap
Input
See detailed ordering and shipping information in the package
dimensions section on page 2 of this data sheet.
(Bottom View)
This device contains 114 active transistors.
Figure 1. Representative Block Diagram
©
Semiconductor Components Industries, LLC, 2008
*For additional information on our Pb−Free strategy
and soldering details, please download the
ON Semiconductor Soldering and Mounting
Techniques Reference Manual, SOLDERRM/D.
1
Publication Order Number:
MC34163/D
August, 2008
−
Rev. 6
MC34163, MC33163
MAXIMUM RATINGS
(Note 1)
Rating
Power Supply Voltage
Switch Collector Voltage Range
Switch Emitter Voltage Range
Switch Collector to Emitter Voltage
Switch Current (Note 2)
Driver Collector Voltage
Driver Collector Current
Bootstrap Input Current Range (Note 2)
Current Sense Input Voltage Range
Feedback and Timing Capacitor Input Voltage Range
Low Voltage Indicator Output Voltage Range
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)
Operating Junction Temperature
Operating Ambient Temperature (Note 3)
MC34163
MC33163
Storage Temperature Range
Symbol
V
CC
V
C(switch)
V
E(switch)
V
CE(switch)
I
SW
V
C(driver)
I
C(driver)
I
BS
V
Ipk (Sense)
V
in
V
C(LVI)
I
C(LVI)
Value
40
−1.0
to + 40
−
2.0 to V
C(switch)
40
3.4
−1.0
to +40
150
−100
to +100
(V
CC
−7.0)
to (V
CC
+1.0)
−1.0
to + 7.0
−1.0
to + 40
10
Unit
V
V
V
V
A
V
mA
mA
V
V
V
mA
°C/W
R
qJA
R
qJC
R
qJA
R
qJC
T
J
T
A
80
15
94
18
+150
0 to +70
−
40 to + 85
−
65 to +150
°C
°C
T
stg
°C
Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit
values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,
damage may occur and reliability may be affected.
1. This device series contains ESD protection and exceeds the following tests: Human Body Model 1500 V per MIL−STD−883, Method 3015.
Machine Model Method 150 V.
2. Maximum package power dissipation limits must be observed.
3. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
ORDERING INFORMATION
Device
MC33163DW
MC33163DWG
MC33163DWR2
MC33163DWR2G
MC33163P
MC33163PG
MC34163DW
MC34163DWG
MC34163DWR2
MC34163DWR2G
MC34163P
MC34163PG
Package
SOIC−16W
SOIC−16W
(Pb−Free)
SOIC−16W
SOIC−16W
(Pb−Free)
PDIP−16
PDIP−16
(Pb−Free)
SOIC−16W
SOIC−16W
(Pb−Free)
SOIC−16W
SOIC−16W
(Pb−Free)
PDIP−16
PDIP−16
(Pb−Free)
Shipping
†
47 Units / Rail
47 Units / Rail
1000 Units / Reel
1000 Units / Reel
25 Units / Rail
25 Units / Rail
47 Units / Rail
47 Units / Rail
1000 Units / Reel
1000 Units / Reel
25 Units / Rail
25 Units / Rail
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specifications Brochure, BRD8011/D.
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2
MC34163, MC33163
ELECTRICAL CHARACTERISTICS
(V
CC
= 15 V, Pin 16 = V
CC
, C
T
= 620 pF, for typical values T
A
= 25°C, for min/max values T
A
is
the operating ambient temperature range that applies (Note 5), unless otherwise noted.)
Characteristic
OSCILLATOR
Frequency
T
A
= 25°C
Total Variation over V
CC
= 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
T
A
= 25°C
Line Regulation (V
CC
= 2.5 V to 40 V, T
A
= 25°C)
Total Variation over Line, and Temperature
Input Bias Current (V
FB1
= 5.05 V)
FEEDBACK COMPARATOR 2
Threshold Voltage
T
A
= 25°C
Line Regulation (V
CC
= 2.5 V to 40 V, T
A
= 25°C)
Total Variation over Line, and Temperature
Input Bias Current (V
FB2
= 1.25 V)
CURRENT LIMIT COMPARATOR
Threshold Voltage
T
A
= 25°C
Total Variation over V
CC
= 2.5 V to 40 V, and Temperature
Input Bias Current (V
Ipk (Sense)
= 15 V)
DRIVER AND OUTPUT SWITCH
(Note 4)
Sink Saturation Voltage (I
SW
= 2.5 A, Pins 14, 15 grounded)
Non−Darlington Connection (R
Pin 9
= 110
W
to V
CC
, I
SW
/I
DRV
≈
20)
Darlington Connection (Pins 9, 10, 11 connected)
Collector Off−State Leakage Current (V
CE
= 40 V)
Bootstrap Input Current Source (V
BS
= V
CC
+ 5.0 V)
Bootstrap Input Zener Clamp Voltage (I
Z
= 25 mA)
LOW VOLTAGE INDICATOR
Input Threshold (V
FB2
Increasing)
Input Hysteresis (V
FB2
Decreasing)
Output Sink Saturation Voltage (I
sink
= 2.0 mA)
Output Off−State Leakage Current (V
OH
= 15 V)
TOTAL DEVICE
Standby Supply Current (V
CC
= 2.5 V to 40 V, Pin 8 = V
CC
,
Pins 6, 14, 15 = GND, remaining pins open)
I
CC
−
6.0
10
mA
V
th
V
H
V
OL(LVI)
I
OH
1.07
−
−
−
1.125
15
0.15
0.01
1.18
−
0.4
5.0
V
mV
V
mA
V
CE(sat)
V
−
−
−
0.5
V
CC
+ 6.0
0.6
1.0
0.02
2.0
V
CC
+ 7.0
1.0
1.4
100
4.0
V
CC
+ 9.0
mA
mA
V
V
th(Ipk Sense)
mV
−
230
−
250
−
1.0
−
270
20
mA
V
th(FB2)
1.225
−
1.213
−
0.4
1.25
0.008
−
0
1.275
0.03
1.287
0.4
V
%/V
V
mA
V
th(FB1)
4.9
−
4.85
−
5.05
0.008
−
100
5.2
0.03
5.25
200
V
%/V
V
mA
f
OSC
kHz
46
45
−
−
8.0
−
−
50
−
225
25
9.0
1.25
0.55
54
55
−
−
10
−
−
mA
mA
−
V
V
Symbol
Min
Typ
Max
Unit
I
chg
I
dischg
I
chg
/I
dischg
V
OSC(P)
V
OSC(V)
I
IB(FB1)
I
IB(FB2)
I
IB(sense)
I
C(off)
I
source(DRV)
V
Z
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient as possible.
T
high
= + 70°C for MC34163
5. T
low
= 0°C for MC34163
=
−
40°C for MC33163
= + 85°C for MC33163
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3
MC34163, MC33163
t on -t off , OUTPUT SWITCH ON-OFF TIME (
μ
s)
Δ
f OSC, OSCILLATOR FREQUENCY CHANGE (%)
100
V
CC
= 15 V
T
A
= 25°C
1) t
on
, R
DT
=
∞
2) t
on
, R
DT
= 20 k
3) t
on
, t
off
, R
DT
= 10 k
4) t
off
, R
DT
= 20 k
5) t
off
, R
DT
=
∞
2.0
V
CC
= 15 V
C
T
= 620 pF
0
1
2
3
4
5
10
- 2.0
- 4.0
1.0
0.1
1.0
C
T
, OSCILLATOR TIMING CAPACITOR (nF)
10
- 6.0
- 55
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
Figure 2. Output Switch On−Off Time
versus Oscillator Timing Capacitor
Figure 3. Oscillator Frequency Change
versus Temperature
140
IIB , INPUT BIAS CURRENT (
μ
A)
V
CC
= 15 V
V
FB1
= 5.05 V
120
V th(FB2) , COMPARATOR 2 THRESHOLD VOLTAGE (mV)
1300
1280
1260
1240
V
th
Min = 1225 mV
1220
1200
- 55
V
CC
= 15 V
V
th
Max = 1275 mV
V
th
Typ = 1250 mV
100
80
60
- 55
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
Figure 4. Feedback Comparator 1 Input Bias
Current versus Temperature
I source (DRV), BOOTSTRAP INPUT CURRENT SOURCE (mA)
Figure 5. Feedback Comparator 2 Threshold
Voltage versus Temperature
V Z, BOOTSTRAP INPUT ZENER CLAMP VOLTAGE (V)
2.8
V
CC
= 15 V
Pin 16 = V
CC
+ 5.0 V
2.4
7.6
I
Z
= 25 mA
7.4
2.0
7.2
1.6
7.0
1.2
- 55
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
6.8
- 55
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
Figure 6. Bootstrap Input Current
Source versus Temperature
Figure 7. Bootstrap Input Zener Clamp
Voltage versus Temperature
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4
MC34163, MC33163
0
VCE (sat), SOURCE SATURATION (V)
VCE (sat), SINK SATURATION (V)
V
CC
- 0.4
- 0.8
-1.2
-1.6
- 2.0
Darlington Configuration
Emitter Sourcing Current to GND
Pins 7, 8, 10, 11 = V
CC
Pins 4, 5, 12, 13 = GND
T
A
= 25°C, (Note 2)
1.2
1.0
0.8
0.6
0.4
0.2
0
Grounded Emitter Configuration
Collector Sinking Current From V
CC
Pins 7, 8 = V
CC
= 15 V
Pins 4, 5, 12, 13, 14, 15 = GND
T
A
= 25°C, (Note 2)
Saturated Switch, R
Pin9
= 110
W
to V
CC
GND
0
0.8
1.6
2.4
I
C
, COLLECTOR CURRENT (A)
3.2
Darlington, Pins 9, 10, 11 Connected
Bootstrapped, Pin 16 = V
CC
+ 5.0 V
Non-Bootstrapped, Pin 16 = V
CC
0
0.8
1.6
2.4
I
E
, EMITTER CURRENT (A)
3.2
Figure 8. Output Switch Source Saturation
versus Emitter Current
Figure 9. Output Switch Sink Saturation
versus Collector Current
V OL (LVI) , OUTPUT SATURATION VOLTAGE (V)
0
GND
V E , EMITTER VOLTAGE (V)
- 0.4
- 0.8
- 1.2
- 1.6
- 2.0
- 55
I
C
= 10 mA
V
CC
= 15 V
Pins 7, 8, 9, 10, 16 = V
CC
Pins 4, 6 = GND
Pin 14 Driven Negative
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
I
C
= 10
mA
0.5
0.4
0.3
0.2
0.1
0
V
CC
= 5 V
T
A
= 25°C
0
2.0
4.0
6.0
I
sink
, OUTPUT SINK CURRENT (mA)
8.0
Figure 10. Output Switch Negative Emitter
Voltage versus Temperature
Figure 11. Low Voltage Indicator Output Sink
Saturation Voltage versus Sink Current
V th (Ipk Sense) , THRESHOLD VOLTAGE (mV)
254
IIB (Sense), INPUT BIAS CURRENT (
μ
A)
V
CC
= 15 V
1.6
1.4
1.2
1.0
0.8
0.6
- 55
V
CC
= 15 V
V
Ipk (Sense)
= 15 V
252
250
248
246
- 55
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
- 25
0
25
50
75
T
A
, AMBIENT TEMPERATURE (°C)
100
125
Figure 12. Current Limit Comparator Threshold
Voltage versus Temperature
Figure 13. Current Limit Comparator Input Bias
Current versus Temperature
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