Page 1
查询NCS2550供应商
MC34063A, MC33063A,
NCV33063A
1.5 A, Step−Up/Down/
Inverting Switching
Regulators
The MC34063A Series is a monolithic control circuit containing the
primary functions required for DC−to−DC converters. These devices
consist of an internal temperature compensated reference, comparator,
controlled duty cycle oscillator with an active current limit circuit,
driver and high current output switch. This series was specifically
designed to be incorporated in Step−Down and Step−Up and
Voltage−Inverting applications with a minimum number of external
components. Refer to Application Notes AN920A/D and AN954/D
for additional design information.
Features
• Operation from 3.0 V to 40 V Input
• Low Standby Current
• Current Limiting
• Output Switch Current to 1.5 A
• Output Voltage Adjustable
• Frequency Operation to 100 kHz
• Precision 2% Reference
• Pb−Free Packages are Available
Q1
1
Switch
Collector
2
Switch
Emitter
3
Timing
Capacitor
45
GND
8
Drive
Collector
Q2
100
1.25 V
Reference
Regulator
Sense
V
Comparator
Inverting
Input
SQ
7
I
pk
Oscillator
6
CC
This device contains 51 active transistors.
R
I
pk
C
Comparator
+
−
(Bottom View)
T
Figure 1. Representative Schematic Diagram
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MARKING
DIAGRAMS
8
SOIC−8
8
1
8
1
x = 3 or 4
A = Assembly Location
L, WL = Wafer Lot
Y, YY = Year
W, WW = Work Week
G or G = Pb−Free Package
D SUFFIX
CASE 751
PDIP−8
P, P1 SUFFIX
CASE 626
1
8
1
8
1
3x063
ALYWA
G
3x063AP1
AWL
YYWWG
33063AVP
AWL
YYWWG
PIN CONNECTIONS
Switch
Collector
Switch
Emitter
Timing
Capacitor
GND
1
2
3
45
(Top View)
8
7
6
Driver
Collector
Ipk Sense
V
CC
Comparator
Inverting
Input
© Semiconductor Components Industries, LLC, 2005
December, 2005 − Rev. 18
See detailed ordering and shipping information in the package
ORDERING INFORMATION
dimensions section on page 11 of this data sheet.
1 Publication Order Number:
MC34063A/D
Page 2
MC34063A, MC33063A, NCV33063A
MAXIMUM RATINGS
Rating Symbol Value Unit
Power Supply Voltage V
Comparator Input Voltage Range V
Switch Collector Voltage V
Switch Emitter Voltage (V
= 40 V) V
Pin 1
Switch Collector to Emitter Voltage V
Driver Collector Voltage V
Driver Collector Current (Note 1) I
Switch Current I
CC
IR
C(switch)
E(switch)
CE(switch)
C(driver)
C(driver)
SW
Power Dissipation and Thermal Characteristics
Plastic Package, P, P1 Suffix
TA = 25°C P
Thermal Resistance
D
R
q
JA
SOIC Package, D Suffix
TA = 25°C P
Thermal Resistance
Operating Junction Temperature T
Operating Ambient Temperature Range T
D
R
q
JA
J
A
MC34063A 0 to +70
MC33063AV, NCV33063A −40 to +125
MC33063A −40 to +85
Storage Temperature Range T
stg
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. Maximum package power dissipation limits must be observed.
2. This device series contains ESD protection and exceeds the following tests: Human Body Model 4000 V per MIL−STD−883, Method 3015.
Machine Model Method 400 V.
3. NCV prefix is for automotive and other applications requiring site and change control.
40 Vdc
−0.3 to +40 Vdc
40 Vdc
40 Vdc
40 Vdc
40 Vdc
100 mA
1.5 A
1.25 W
100 °C/W
625 mW
160 °C/W
+150 °C
°C
−65 to +150 °C
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MC34063A, MC33063A, NCV33063A
ELECTRICAL CHARACTERISTICS (V
Characteristics
= 5.0 V, TA = T
CC
low
to T
[Note 4], unless otherwise specified.)
high
Symbol Min Typ Max Unit
OSCILLATOR
Frequency (V
Charge Current (VCC = 5.0 V to 40 V, TA = 25°C) I
Discharge Current (VCC = 5.0 V to 40 V, TA = 25°C) I
Discharge to Charge Current Ratio (Pin 7 to VCC, TA = 25°C) I
Current Limit Sense Voltage (I
= 0 V, CT = 1.0 nF, TA = 25°C) f
Pin 5
chg
= I
, TA = 25°C) V
dischg
osc
chg
dischg
dischg/Ichg
ipk(sense)
24 33 42 kHz
24 35 42
140 220 260
mA
mA
5.2 6.5 7.5 −
250 300 350 mV
OUTPUT SWITCH (Note 5)
Saturation Voltage, Darlington Connection
= 1.0 A, Pins 1, 8 connected)
(I
SW
Saturation Voltage (Note 6)
(I
= 1.0 A, R
SW
= 82 W to VCC, Forced b ] 20)
Pin 8
DC Current Gain (ISW = 1.0 A, VCE = 5.0 V, TA = 25°C) h
Collector Off−State Current (VCE = 40 V) I
V
CE(sat)
V
CE(sat)
C(off)
FE
− 1.0 1.3 V
− 0.45 0.7 V
50 75 − −
− 0.01 100
mA
COMPARATOR
Threshold Voltage
= 25°C
T
A
= T
T
to T
A
low
high
Threshold Voltage Line Regulation (VCC = 3.0 V to 40 V)
MC33063A, MC34063A
MC33063AV, NCV33063A
Input Bias Current (Vin = 0 V) I
Reg
V
th
line
IB
1.225
1.21
−
−
1.25−1.275
1.29
1.4
1.4
5.0
6.0
− −20 −400 nA
V
mV
TOTAL DEVICE
Supply Current (V
> Vth, Pin 2 = GND, remaining pins open)
V
Pin 5
4. T
= 0°C for MC34063A, −40°C for MC33063A, AV, NCV33063A
low
= +70°C for MC34063A, +85°C for MC33063A, +125°C for MC33063AV, NCV33063A
T
high
5. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
= 5.0 V to 40 V, CT = 1.0 nF, Pin 7 = VCC,
CC
I
CC
− − 4.0 mA
6. If the output switch is driven into hard saturation (non−Darlington configuration) at low switch currents (≤ 300 mA) and high driver currents
(≥ 30 mA), it may take up to 2.0 ms for it to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, and is
magnified at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non−Darlington configuration is used, the following output drive condition is recommended:
Forced b of output switch :
ICoutput
ICdriver – 7.0 mA *
w 10
*The 100 W resistor in the emitter of the driver device requires about 7.0 mA before the output switch conducts.
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MC34063A, MC33063A, NCV33063A
t
1000
μ
VCC = 5.0 V
500
Pin 7 = V
200
100
50
20
10
5.0
, OUTPUT SWITCH ON-OFF TIME ( s)
2.0
on−off
1.0
t
0.01 0.02 0.05 0.1 0.2 0.5 1.0 2.0 5.0 10
Figure 2. Output Switch On−Off Time versus
CC
Pin 5 = GND
T
= 25°C
A
C
, OSCILLATOR TIMING CAPACITOR (nF)
T
Oscillator Timing Capacitor
t
on
t
off
, OSCILLATOR VOLTAGE (V)
OSC
V
VCC = 5.0 V
Pin 7 = V
CC
Pin 2 = GND
Pins 1, 5, 8 = Open
= 1.0 nF
C
T
T
= 25°C
A
10 ms/DIV
Figure 3. Timing Capacitor Waveform
200 mV/DIV
1.8
1.7
1.6
1.5
1.4
1.3
, SATURATION VOLTAGE (V)
1.2
1.1
CE(sat)
V
1.0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
VCC = 5.0 V
Pins 1, 7, 8 = V
Pins 3, 5 = GND
T
= 25°C
A
(See Note 7)
IE, EMITTER CURRENT (A)
Figure 4. Emitter Follower Configuration Output
Saturation Voltage versus Emitter Current
400
380
VCC = 5.0 V
360
I
= I
chg
340
320
300
280
260
, CURRENT LIMIT SENSE VOLTAGE (V)
240
220
200
IPK(sense)
−55 −25 0 25 50 75 100 125
V
dischg
TA, AMBIENT TEMPERATURE (°C)
1.1
1.0
0.9
Darlington Connection
0.8
0.7
0.6
VCC = 5.0 V
Pin 7 = V
0.5
0.4
, SATURATION VOLTAGE (V)
CC
0.3
CC
Pins 2, 3, 5 = GND
T
= 25°C
A
(See Note 7)
Forced b = 20
0.2
CE(sat)
0.1
V
0
0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
IC, COLLECTOR CURRENT(A)
Figure 5. Common Emitter Configuration Outpu
Switch Saturation Voltage versus
Collector Current
3.6
3.2
2.8
2.4
2.0
1.6
1.2
, SUPPLY CURRENT (mA)
0.8
CC
I
0.4
0
0 5.0 10 15 20 25 30 35 40
VCC, SUPPLY VOLTAGE (V)
CT = 1.0 nF
Pin 7 = V
CC
Pin 2 = GND
Figure 6. Current Limit Sense Voltage
versus Temperature
Figure 7. Standby Supply Current versus
Supply Voltage
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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MC34063A, MC33063A, NCV33063A
170 mH
L
8
1
180
SQRQ2
Q1
V
12 V
7
I
R
sc
0.22
in
6
+
100
pk
V
CC
+
Comp.
−
OSC
C
T
1.25 V
Ref
Reg
5
R2
R1 2.2 k
47 k
2
3
C
T
1500
pF
4
330 C
1N5819
+
O
V
out
28 V/175 mA
Test Conditions Results
Line Regulation Vin = 8.0 V to 16 V, IO = 175 mA 30 mV = ±0.05%
Load Regulation Vin = 12 V, IO = 75 mA to 175 mA 10 mV = ±0.017%
Output Ripple Vin = 12 V, IO = 175 mA 400 mVpp
Efficiency Vin = 12 V, IO = 175 mA 87.7%
Output Ripple With Optional Filter Vin = 12 V, IO = 175 mA 40 mVpp
1.0 mH
Optional Filter
V
out
+
100
Figure 8. Step−Up Converter
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MC34063A, MC33063A, NCV33063A
s
V
8
7
R
sc
V
in
6
1
2
out
8
7
R
sc
V
in
6
1
2
R
R ³ 0 for
constant V
in
Figure 9. External Current Boost Connections for IC Peak Greater than 1.5 A
9a. External NPN Switch 9b. External NPN Saturated Switch
(See Note 8)
8. If the output switch is driven into hard saturation (non−Darlington configuration) at low switch currents (≤ 300 mA) and high driver current
(≥ 30 mA), it may take up to 2.0 ms to come out of saturation. This condition will shorten the off time at frequencies ≥ 30 kHz, and is magnified
at high temperatures. This condition does not occur with a Darlington configuration, since the output switch cannot saturate. If a
non−Darlington configuration is used, the following output drive condition is recommended.
V
out
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MC34063A, MC33063A, NCV33063A
V
Q1
1
2
1N5819
3
C
T
470
4
470 C
L
220 mH
pF
V
out
5.0 V/500 mA
1.0 mH
+
O
V
25 V
R
0.33
in
100
R1 1.2 k
8
SQ
Q2
R
7
I
sc
6
+
pk
V
CC
+
−
OSC
Comp.
C
T
1.25 V
Ref
Reg
5
R2
3.6 k
Test Conditions Results
Line Regulation Vin = 15 V to 25 V, IO = 500 mA 12 mV = ±0.12%
Load Regulation Vin = 25 V, IO = 50 mA to 500 mA 3.0 mV = ±0.03%
Output Ripple Vin = 25 V, IO = 500 mA 120 mVpp
Short Circuit Current
Vin = 25 V, RL = 0.1 W
1.1 A
Efficiency Vin = 25 V, IO = 500 mA 83.7%
Output Ripple With Optional Filter Vin = 25 V, IO = 500 mA 40 mVpp
+
100
Optional Filter
V
out
Figure 10. Step−Down Converter
8
1
8
7
R
sc
V
in
6
2
V
out
7
R
sc
V
in
6
1
2
Figure 11. External Current Boost Connections for IC Peak Greater than 1.5 A
11a. External NPN Switch 11b. External PNP Saturated Switch
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MC34063A, MC33063A, NCV33063A
4.5 V to 6.0 V
V
8
1
SQRQ2
Q1
R
sc
0.24
in
100
R2 8.2 k
7
I
pk
6
V
CC
OSC
C
T
+
+
Comp.
−
1.25 V
Ref
Reg
5
R1
953
2
88 mH
L
3
+
1500
pF
1N5819
4
1.0 mH
V
out
−12 V/100 mA
1000 mf
C
O
+
Optional Filter
Test Conditions Results
Line Regulation Vin = 4.5 V to 6.0 V, IO = 100 mA 3.0 mV = ± 0.012%
Load Regulation Vin = 5.0 V, IO = 10 mA to 100 mA 0.022 V = ± 0.09%
Output Ripple Vin = 5.0 V, IO = 100 mA 500 mVpp
Short Circuit Current
Vin = 5.0 V, RL = 0.1 W
910 mA
Efficiency Vin = 5.0 V, IO = 100 mA 62.2%
Output Ripple With Optional Filter Vin = 5.0 V, IO = 100 mA 70 mVpp
V
out
100
+
Figure 12. Voltage Inverting Converter
8
7
V
in
6
1
8
2
V
out
7
V
in
6
1
V
out
2
Figure 13. External Current Boost Connections for IC Peak Greater than 1.5 A
13a. External NPN Switch 13b. External PNP Saturated Switch
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MC34063A, MC33063A, NCV33063A
5.45′′
(Top view, copper foil as seen through the board from the component side)
2.500′′
MC34063A
MC34063A
(Top View, Component Side) *Optional Filter.
Figure 14. Printed Circuit Board and Component Layout
(Circuits of Figures 8, 10, 12)
INDUCTOR DATA
Converter
Step−Up 170 38 Turns of #22 AWG
Step−Down 220 48 Turns of #22 AWG
Voltage−Inverting 88 28 Turns of #22 AWG
All inductors are wound on Magnetics Inc. 55117 toroidal core.
Inductance (mH)
Turns/Wire
MC34063A
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MC34063A, MC33063A, NCV33063A
x)
Calculation
ton/t
off
(ton + t
t
off
t
on
C
T
I
pk(switch)
R
sc
L
(min)
)
off
ǒ
C
O
V
= Saturation voltage of the output switch.
sat
V
= Forward voltage drop of the output rectifier.
F
The following power supply characteristics must be chosen:
V
− Nominal input voltage.
in
− Desired output voltage,
V
out
I
− Desired output current.
out
f
− Minimum desired output switching frequency at the selected values of Vin and IO.
min
V
NOTE: For further information refer to Application Note AN920A/D and AN954/D.
− Desired peak−to−peak output ripple voltage. In practice, the calculated capacitor value will need to be increased due to its
ripple(pp)
equivalent series resistance and board layout. The ripple voltage should be kept to a low value since it will directly affect the
line and load regulation.
Step−Up Step−Down Voltage−Inverting
V
out
2I
out(max)
(V
in(min)
) VF* V
V
in(min)
ton) t
t
on
t
off
(ton + t
4.0 x 10−5 t
0.3/I
pk(switch)
* V
I
pk(switch)
I
out
9
V
ripple(pp)
|V
out
in(min)
* V
sat
1
f
off
) 1
) − t
off
off
on
t
on
ǒ
t
t
| + 1.25ǒ1 )
off
sat
on
) 1
)
Ǔ
Ǔ
t
on(max)
R2
R1
Ǔ
ǒ
(V
in(min)
V
in(min)
(ton + t
4.0 x 10−5 t
* V
I
pk(switch)
I
pk(switch)
V
out
* V
ton) t
t
on
t
off
2I
out(max)
0.3/I
pk(switch)
sat
8V
ripple(pp)
) V
sat
1
f
) 1
) − t
off
* V
(ton) t
off
off
on
F
* V
out
)
off
Ǔ
out
t
on(ma
)
ǒ
2I
(V
in(min)
|V
out
Vin* V
ton) t
t
on
t
off
(ton + t
4.0 x 10−5 t
out(max)
0.3/I
* V
I
pk(switch)
9
V
| ) V
sat
1
f
off
) 1
) − t
off
t
on
ǒ
t
off
pk(switch)
)
sat
I
t
on
out
ripple(pp)
F
off
on
) 1
Ǔ
Ǔ
t
on(max)
Figure 15. Design Formula Table
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MC34063A, MC33063A, NCV33063A
ORDERING INFORMATION
Device Package Shipping
MC33063AD SOIC−8 98 Units / Rail
MC33063ADG SOIC−8
MC33063ADR2 SOIC−8 2500 Units / Tape & Reel
MC33063ADR2G SOIC−8
MC33063AP1 PDIP−8 50 Units / Rail
MC33063AP1G PDIP−8
MC33063AVD SOIC−8 98 Units / Rail
MC33063AVDG SOIC−8
MC33063AVDR2 SOIC−8
MC33063AVDR2G SOIC−8
NCV33063AVDR2* SOIC−8
NCV33063AVDR2G* SOIC−8
MC33063AVP PDIP−8 50 Units / Rail
MC33063AVPG PDIP−8
MC34063AD SOIC−8 98 Units / Rail
MC34063ADG SOIC−8
MC34063ADR2 SOIC−8 2500 Units / Tape & Reel
MC34063ADR2G SOIC−8
MC34063AP1 PDIP−8 50 Units / Rail
MC34063AP1G PDIP−8
†For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging
Specification Brochure, BRD8011/D.
*NCV33063A: T
change control.
= −40°C, T
low
= +125°C. Guaranteed by design. NCV prefix is for automotive and other applications requiring site and
high
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
(Pb−Free)
98 Units / Rail
2500 Units / Tape & Reel
50 Units / Rail
98 Units / Rail
2500 Units / Tape & Reel
50 Units / Rail
98 Units / Rail
2500 Units / Tape & Reel
50 Units / Rail
†
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MC34063A, MC33063A, NCV33063A
SOIC−8 NB
PACKAGE DIMENSIONS
D SUFFIX
CASE 751−07
ISSUE AG
−Y−
−Z−
−X−
A
58
B
1
S
0.25 (0.010)
4
M
M
Y
K
G
C
SEATING
PLANE
0.10 (0.004)
H
D
0.25 (0.010) Z
M
Y
SXS
N
X 45
_
M
J
NOTES:
1. DIMENSIONING AND TOLERANCING PER
ANSI Y14.5M, 1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSION A AND B DO NOT INCLUDE
MOLD PROTRUSION.
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006)
PER SIDE.
5. DIMENSION D DOES NOT INCLUDE DAMBAR
PROTRUSION. ALLOWABLE DAMBAR
PROTRUSION SHALL BE 0.127 (0.005) TOTAL
IN EXCESS OF THE D DIMENSION AT
MAXIMUM MATERIAL CONDITION.
6. 751−01 THRU 751−06 ARE OBSOLETE. NEW
STANDARD IS 751−07.
MILLIMETERS
DIMAMIN MAX MIN MAX
4.80 5.00 0.189 0.197
B 3.80 4.00 0.150 0.157
C 1.35 1.75 0.053 0.069
D 0.33 0.51 0.013 0.020
G 1.27 BSC 0.050 BSC
H 0.10 0.25 0.004 0.010
J 0.19 0.25 0.007 0.010
K 0.40 1.27 0.016 0.050
M 0 8 0 8
____
N 0.25 0.50 0.010 0.020
S 5.80 6.20 0.228 0.244
INCHES
SOLDERING FOOTPRINT*
1.52
0.060
7.0
0.275
0.6
0.024
4.0
0.155
1.270
0.050
SCALE 6:1
mm
ǒ
inches
Ǔ
*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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PDIP−8
NOTE 2
−T−
SEATING
PLANE
H
MC34063A, MC33063A, NCV33063A
58
−B−
14
F
−A−
C
N
D
G
0.13 (0.005) B
PACKAGE DIMENSIONS
P, P1 SUFFIX
CASE 626−05
ISSUE L
NOTES:
1. DIMENSION L TO CENTER OF LEAD WHEN
FORMED PARALLEL.
2. PACKAGE CONTOUR OPTIONAL (ROUND OR
SQUARE CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI
Y14.5M, 1982.
DIM MIN MAX MIN MAX
A 9.40 10.16 0.370 0.400
B 6.10 6.60 0.240 0.260
C 3.94 4.45 0.155 0.175
D 0.38 0.51 0.015 0.020
L
J
K
M
M
A
T
M
M
F 1.02 1.78 0.040 0.070
G 2.54 BSC 0.100 BSC
H 0.76 1.27 0.030 0.050
J 0.20 0.30 0.008 0.012
K 2.92 3.43 0.115 0.135
L 7.62 BSC 0.300 BSC
M −−− 10 −−− 10
N 0.76 1.01 0.030 0.040
INCHESMILLIMETERS
__
SENSEFET is a trademark of Semiconductor Components Industries, LLC.
ON Semiconductor and are registered trademarks of Semiconductor Components Industries, LLC (SCILLC). SCILLC reserves the right to make changes without further notice
to any products herein. SCILLC makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does SCILLC assume any liability
arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation special, consequential or incidental damages.
“Typical” parameters which may be provided in SCILLC data sheets and/or specifications can and do vary in different applications and actual performance may vary over time. All
operating parameters, including “Typicals” must be validated for each customer application by customer’s technical experts. SCILLC does not convey any license under its patent rights
nor the rights of others. SCILLC products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the SCILLC product could create a situation where personal injury or death may occur. Should
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MC34063A/D
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