MC34063AD [ARTSCHIP]
SMPS Controller;
| 型号： | MC34063AD |
| 厂家： | 
Artschip |
| 描述： | SMPS Controller |
| 文件： | 总10页 (文件大小：334K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
MC34063A MC33063A
MC34063A/MC33063A
SMPS Controller
DC-to-DC Converter
Control Circuits
PIN CONNECTIONS
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.
(Top View)
z Operation from 3.0V to 40V input
z Low Standby Current
ORDERING INFORMATION
z Current Limiting
Operating
Device
Package
z Output Switch Current to 1.5A
z Output Voltage Adjustable
z Frequency Operation to 100kHz
z Precision 2% Reference
Temperature Range
MC33063AD
MC33063AP1
MC34063AVD
MC34603AVP
MC34063AD
MC34063APS
SO-8
Plastic DIP
SO-8
TA=-40° to +85°C
TA=-40° to +125°C
TA=0° to +70°C
Plastic DIP
SO-8
DC-to-DC CONVERTER CONTROL CIRCUITS
SEMICONDUCTOR TECHNICAL DATA
Plastic DIP
Representative Schematic Diagram
P, P1 SUFFIX
PLASTIC PACKAGE
CASE 626
D SUFFIX
PLASTIC PACKAGE
CASE 751
(SO-8)
This device contains 51 active transistors.
www.artschip.com
1
MC34063A MC33063A
MAXIMUM RATINGS
Rating
Symbol
Value
Unit
Power Supply Voltage
Vcc
VIR
40
V dc
V dc
V dc
V dc
V dc
V dc
mA
Comparator Input Voltage Range
Switch Collector Voltage
-0.3 to +40
VC(switch)
VE(switch)
VCE(switch)
VC(driver)
IC(driver)
40
Switch Emitter Voltage (VPin 1=40V)
Switch Collector to Emitter Voltage
Driver Collector Voltage
40
40
40
Driver Collector current (Note 1)
Switch Current
100
1.5
I
A
sw
Power Dissipation and Thermal Characteristics
Plastic Package, P,P1 Suffix
TA=25℃
PD
1.25
100
W
℃/w
Thermal Resistance
R
ӨJA
SOIC Package, D Suffix
TA=25℃
PD
625
w
Thermal Resistance
R
160
℃/w
℃
ӨJA
Operating Junction Temperature
TJ
+150
Operating Ambient Temperature Range
MC34063A
TA
℃
0 to +70
MC33063AV
MC33063A
-40 to +125
-40 to +85
-65 to +150
Storage Temperature Range
T stg
℃
NOTES: 1. Maximum package power dissipation limits must be observed.
2. ESD data available upon request.
ELECTRICAL CHARACTERISTICS (VCC = 5.0V, TA=TIOW to Thigh [Note 3], unless otherwise specified.)
Characteristics
Symbol
F OSC
Min
Typ
Max
Unit
OSCILLATOR
Frequency (VPin 5=0 V, CT =10nF, TA =25℃)
24
24
33
35
42
42
kHz
µA
µA
-
Charge Current (VCC =5.0V to 40V, TA=25℃)
Discharge Current (VCC =5.0V to 40V, TA =25℃)
Discharge to Charge Current Ratio (Pin 7 to VCC, TA=25℃)
Current Limit Sense Voltage (I chg = I dischg, TA =25℃)
I
chg
I dischg
dischg / I chg
140
5.2
250
220
6.5
300
260
7.5
350
I
V ipk(sense)
mV
OUTPUT SWITCH (Note 4)
Saturation Voltage, Darlington Connection (Note 5)
(ISW =1.0A, Pins 1,8 connected)
VCE(sat0
VCE(sat)
—
—
1.0
1.3
0.7
V
V
Saturation Voltage, Darlington Connection
(ISW = 1.0A, RPin 8 =82Ω to VCC, Forced ß≌20)
DC Current Gain (ISW =1.0A, VCE = 5.0V, TA=25℃)
Collector Off-State Current (VCE = 40V)
0.45
h FE
50
—
75
—
—
IC(off)
0.01
0.01
µA
NOTES: 3. T
=0℃ for MC34063A, -40℃ for MC33063A, AV
Thigh = +70℃ for MC34063A, +85℃ for MC33063A, +125℃ for MC33063V
low
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
5. If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300mA) and high driver
currents(≥30mA), it may take up to 2.0µs for it to come out of saturation. This condition will shorten the off time at
frequencies≥30kHz, 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 ß of output switch:
*The 100Ω resistor in the emitter of the driver device requires about 7.0mA before the output switch conducts.
www.artschip.com
2
MC34063A MC33063A
ELECTRICAL CHARACTERISTICS (continued) (VCC = 5.0V, TA = T
to Thigh [Note 3], unless otherwise specified.)
low
Characteristics
OSCILLATO
Symbol
Min
Typ
Max
Unit
Threshold Voltage
V
V
th
TA = 25℃
1.225
1.21
1.25
—
1.275
1.29
TA = T
to T
high
low
Threshold Voltage Line Regulation (VCC = 3.0 V to 40V)
MC33063A, MC34063A
Regline
IIB
mV
nA
—
—
—
1.4
1.4
-20
5.0
6.0
MC33363V
Input Bias Current (V in = 0V)
-400
TOTAL DEVICE
Supply Current (VCC = 5.0V to 40V, CT = 1.0nF, Pin 7 = VCC
,
ICC
—
—
4.0
mA
V
> V , Pin 2 = Gnd, remaining pins open)
th
Pin 5
NOTES: 3. Tlow =0℃ for MC34063A, -40℃ for MC33063A, AV
T
high
= +70℃ for MC34063A, +85℃ for MC33063A, +125℃ for MC33063AV
4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
5. If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300mA) and high driver
currents(≥30mA), it may take up to 2.0µs for it to come out of saturation. This condition will shorten the off time at
frequencies≥30kHz, 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 ß of output switch:
*The 100Ω resistor in the emitter of the driver device requires about 7.0mA before the output switch conducts.
Figure 1. Output Switch On-Off Time Versus
Oscillator Timing Capacitor
Figure 2. Timing Capacitor Waveform
www.artschip.com
3
MC34063A MC33063A
Figure 3. Emitter Follower Configuration Output
Saturation Voltage Versus Emitter Current
Figure 4. Common Emitter Configuration Output
Switch Saturation Voltage versus
Collector Current
Figure 5. Current Limit Sense Voltage
Versus Temperature
Figure 6. Standby Supply Current versus
Supply Voltage
NOTE: 4. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
www.artschip.com
4
MC34063A MC33063A
Figure 7. Step-Up Converter
Test
Conditions
Results
30mV = ±0.05%
10mV =±0.017%
400mVpp
Line Regulation
Load Regulation
Output Ripple
Efficiency
V in=8.0V to 16 V, I = 175mA
O
V in=12V, I = 75mA to 175mA
O
V in=12V, I = 175mA
O
V in=12V, I = 175mA
87.7%
O
Output Ripple With Optional Filter
V in=12V, I = 175mA
40mVpp
O
Figure 8. External Current Boost Connections for IC Peak Greater than 1.5A
8b. External NPN Saturated Switch
(See Note 5)
8a. External NPN Switch
NOTE: 5. If the output switch is driven into hard saturation (non-Darlington configuration) at low switch currents (≤300mA) and high driver
currents(≥30mA), it may take up to 2.0µs for it to come out of saturation. This condition will shorten the off time at frequencies≥30kHz, 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:
www.artschip.com
5
MC34063A MC33063A
Figure 9. Step-Down Converter
Test
Conditions
V in=15V to 25 V, I = 500mA
Results
12mV = ±0.12%
3.0mV =±0.03%
120mVpp
Line Regulation
Load Regulation
Output Ripple
O
V in=25V, I = 50mA to 500mA
O
V in=25V, I = 500mA
O
Short Circuit Current
1.1A
V
in=25V, R = 0.1Ω
L
Efficiency
V in=25V, I = 500mA
83.7%
O
Output Ripple With Optional Filter
V in=25V, I = 500mA
40mVpp
O
Figure 10. External Current Boost Connections for IC Peak Greater than 1.5A
10a. External NPN Switch 10b. External PNP Saturated Switch
www.artschip.com
6
MC34063A MC33063A
Figure 11.Voltage Inverting Converter
Test
Conditions
V in=4.5V to 6.0V, I = 100mA
Results
3.0mV = ±0.012%
0.022mV =±0.09%
500mVpp
Line Regulation
Load Regulation
Output Ripple
O
V in=5.0V, I = 10mA to 100mA
O
V in=5.0V, I = 100mA
O
Short Circuit Current
910A
V
in=5.0V, R = 0.1Ω
L
Efficiency
V in=5.0V, I = 100mA
62.2%
O
Output Ripple With Optional Filter
V in=5.0V, I = 100mA
70mVpp
O
Figure 12. External Current Boost Connections for I Peak Greater than 1.5A
C
12a. External NPN Switch
12b. External PNP Saturated Switch
www.artschip.com
7
MC34063A MC33063A
Figure 13. Printed Circuit Board and Component Layout
(Circuits of Figures 7,9,11)
(Top view, copper foil as seen through the board from the component side)
(Top View, Component Side)
*Optional Filter.
INDUCTOR DATA
Inductance (µH)
Converter
Step-Up
Turns/Wire
170
220
88
38 Turns of #22 AWG
48 Turns of #22 AWG
28 Turns of #22 AWG
Step-Down
Voltage-Inverting
All inductors are wound on Magnetics Inc. 55117 toroidal core.
www.artschip.com
8
MC34063A MC33063A
Figure 14. Design Formula Table
V
sat=Saturation voltage of the output switch.
VF = Forward voltage drop of the output rectifier.
The following power supply characteristics must be chosen:
V
V
in – Nominal input voltage.
– Desired output voltage, | V out | = 1.25 (1 + R2/R1)
out
I
f
– Desired output current.
min – Minimum desired output switching frequency at the selected values of V and I .
out
in
O
Vripple (pp) – Desired peak-to-peak output ripple voltage. In practice, the calculated capacitor value will need to be increase due to its
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.
NOTE: For further information refer to Application Note AN920A/D and AN954/D.
www.artschip.com
9
MC34063A MC33063A
OUTLINE DIMENSIONS
P, P1 SUFFIX
PLASTIC PACKAGE
CASE 626-05
ISSUE K
Note:
1. DIMENSIONL TO CENTER OF LEAD WHEN FORMED
PARALLEL
2. PACKAGE CONTOUR OPTIONAL (ROUND OR SQUARE
CORNERS).
3. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M,1982.
D SUFFIX
PLASTIC PACKAGE
CASE 751-05
(SO-8)
ISSUE P
NOTES:
1. DIMENSIONING AND TOLERANCING PER ANSI Y14.5M,
1982.
2. CONTROLLING DIMENSION: MILLIMETER.
3. DIMENSIONS
PROTRUSION
A
AND
B
DO NOTINCLUDE MOLD
4. MAXIMUM MOLD PROTRUSION 0.15 (0.006) PER SIDE.
5. DIMENSION DOES NOT INCLUDE DAMBAR
D
PROTRUSION. ALLOWABLE DAMBAR PROTRUSION
SHALLBE 0.127 (0.005) TOTAL IN EXCESS OF THE D
DIMENSION AT MAXIMUM MATERIAL CONDITION.
www.artschip.com
10
相关型号：
MC34063AD-TR
Switching Regulator/Controller, Voltage-mode, 0.1A, 100kHz Switching Freq-Max, BIPolar, PDSO8
MOTOROLA
MC34063ADR2G
1.5A SWITCHING REGULATOR, 100kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOIC-8
ROCHESTER
©2020 ICPDF网 联系我们和版权申明