MC34063AP [FAIRCHILD]
SMPS Controller; SMPS控制器
| 型号： | MC34063AP |
| 厂家： | 
FAIRCHILD SEMICONDUCTOR |
| 描述： | SMPS Controller |
| 文件： | 总8页 (文件大小：48K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
www.fairchildsemi.com
MC34063A/MC33063A
SMPS Controller
Features
Description
• Operation from 3.0 to 40V input
• Short circuit current limiting
• Low standby current
• Output switch current of 1.5A without external transistors
• Output voltage adjustable
The MC34063A/MC33063A is a monolithic regulator sub
system intended for use as DC to DC converter. This device
contains a temperature compensated bandgap reference, a
duty cycle control oscillator, driver and high current output
switch. It can be used for step down, step up or inverting
switching regulators as well as for series pass regulators.
• Frequency of operation from 100Hz to 100KHz
• Step up, Step down or inverting switching regulators
8-DIP
1
8-SOP
1
Internal Block Diagram
Rev. 1.0.2
©2001 Fairchild Semiconductor Corporation
MC34063A/MC33063A
Absolute Maximum Ratings
Parameter
Supply Voltage
Symbol
Value
Unit
V
V
40
CC
I(COMP)
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage
V
- 0.3 ~ + 40
V
V
40
V
C(SW)
E(SW)
V
40
V
Switch Collector To Emitter Voltage
Driver Collector Voltage
Switch Current
V
40
40
V
CE(SW)
V
V
C(DR)
I
1.5
A
SW
Storage Temperature Range
T
STG
- 65 ~ + 150
°C
Electrical Characteristics
(V
CC
= 5.0V, T = 0°C to +70°C for the MC34063, T = -40°C to the +85°C for the MC33063, unless otherwise
A
A
specified)
Parameter
Symbol
Conditions
Min. Typ. Max. Unit
OSCILLATOR
V
= 5 to 40V
CC
Charging Current
I
22
31
42
µA
µA
CHG
T = 25°C
A
V
= 5 to 40V
CC
T = 25°C
Discharging Current
I
DISCHG
140 190 260
A
Oscillator Amplitude
V
T = 25°C
-
0.5
6.1
-
V
-
(OSC)
K
A
Discharge To Charge Current Ratio
V = V
T = 25°C
CC , A
5.2
7.5
7
Current Limit Sense
Voltage
I
= I
CHG
A
DISCHG
T = 25°C
V
250 300 350
mV
SENSE(C.L)
OUTPUT SWITCH
I
= 1.0A
SW
C
Saturation Voltage 1 (Note)
V
1
2
-
-
0.95 1.3
0.45 0.7
V
V
CE(SAT)
CE(SAT)
V (driver) = V (SW)
C
I
= 1.0A,
SW
C
Saturation Voltage 2 (Note)
DC Current Gain (Note)
V
V (driver) = 50mA
I
V
= 1.0A,
= 5.0V, T = 25°C
A
SW
CE
G
I(DC)
50
-
180
-
-
Collector off State Current (Note)
COMPARATOR
I
V
= 40V, T = 25°C
0.01 100
µA
C(OFF)
CE
A
Threshold Voltage
V
TH
-
1.21 1.24 1.29
V
Threshold Voltage Line Regulation
Input Bias Current
∆V
V
= 3 to 40V
-
-
2.0
50
5.0
mV
nA
TH
CC
I
V = 0V
I
400
BIAS
TOTAL DEVICE
Supply Current
MC34063
V
= 5 to 40V
CC
C = 0.001uF
-
-
-
-
4.0
5.0
T
I
CC
mA
V = V
V >V
5 TH
7
CC,
pin2 = GND
MC33063
Note :
Output switch tests are performed under pulsed conditions to minimize power dissipation
2
MC34063A/MC33063A
Typical Performance Characteristics
Temperature (°C)
Figure 1. Temperature Drift (V
Temperature (°C)
Figure 2. Temperature Drift (I
)
)
OC
TH
3
MC34063A/MC33063A
Mechanical Dimensions
Package
8-DIP
6.40 ±0.20
0.252 ±0.008
#1
#4
#8
#5
3.30 ±0.30
0.130 ±0.012
5.08
0.200
MAX
7.62
3.40 ±0.20
0.134 ±0.008
0.300
0.33
0.013
MIN
+0.10
–0.05
0.25
+0.004
–0.002
0.010
4
MC34063A/MC33063A
Mechanical Dimensions (Continued)
Package
8-SOP
0.1~0.25
0.004~0.001
MIN
1.55 ±0.20
0.061 ±0.008
#8
#5
#1
#4
6.00 ±0.30
0.236 ±0.012
1.80
0.071
MAX
3.95 ±0.20
0.156 ±0.008
5.72
0.225
0.50 ±0.20
0.020 ±0.008
5
MC34063A/MC33063A
Ordering Informatio
Product Number
MC34063AP
MC34063AD
MC33063AP
MC33063AD
Package
8-DIP
Operating Temperature
0 ~ + 70°C
8-SOP
8-DIP
-40 ~ + 85°C
8-SOP
6
MC34063A/MC33063A
7
MC34063A/MC33063A
DISCLAIMER
FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY
PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY
LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; NEITHER
DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.
LIFE SUPPORT POLICY
FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES
OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR
CORPORATION. As used herein:
1. Life support devices or systems are devices or systems
which, (a) are intended for surgical implant into the body,
or (b) support or sustain life, and (c) whose failure to
perform when properly used in accordance with
instructions for use provided in the labeling, can be
reasonably expected to result in a significant injury of the
user.
2. A critical component in any component of a life support
device or system whose failure to perform can be
reasonably expected to cause the failure of the life support
device or system, or to affect its safety or effectiveness.
www.fairchildsemi.com
6/21/01 0.0m 001
Stock#DSxxxxxxxx
2001 Fairchild Semiconductor Corporation
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