Fairchild MC33063 Smps controller Datasheet

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MC34063A/MC33063A
SMPS Controller
Features
Description
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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.
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
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
Symbol
Value
Unit
VCC
40
V
VI(COMP)
- 0.3 ~ + 40
V
Switch Collector Voltage
VC(SW)
40
V
Switch Emitter Voltage
VE(SW)
40
V
VCE(SW)
40
V
VC(DR)
40
V
ISW
1.5
A
TSTG
- 65 ~ + 150
°C
Supply Voltage
Comparator Input Voltage Range
Switch Collector To Emitter Voltage
Driver Collector Voltage
Switch Current
Storage Temperature Range
Electrical Characteristics
(VCC = 5.0V, TA = 0°C to +70°C for the MC34063, TA= -40°C to the +85°C for the MC33063, unless otherwise
specified)
Parameter
Symbol
Conditions
Min.
Typ. Max.
Unit
OSCILLATOR
ICHG
VCC = 5 to 40V
TA = 25°C
22
31
42
µA
Discharging Current
IDISCHG
VCC = 5 to 40V
TA = 25°C
140
190
260
µA
Oscillator Amplitude
V(OSC)
TA = 25°C
-
0.5
-
V
V7 = VCC , TA = 25°C
5.2
6.1
7.5
-
ICHG = IDISCHG
TA = 25°C
250
300
350
mV
Charging Current
Discharge To Charge Current Ratio
Current Limit Sense
Voltage
K
VSENSE(C.L)
OUTPUT SWITCH
Saturation Voltage 1 (Note)
VCE(SAT)1
ISW = 1.0A
VC(driver) = VC(SW)
-
0.95
1.3
V
Saturation Voltage 2 (Note)
VCE(SAT)2
ISW = 1.0A,
VC(driver) = 50mA
-
0.45
0.7
V
DC Current Gain (Note)
GI(DC)
ISW = 1.0A,
VCE = 5.0V, TA = 25°C
50
180
-
-
Collector off State Current (Note)
IC(OFF)
VCE = 40V, TA = 25°C
-
0.01
100
µA
1.21
1.24
1.29
V
COMPARATOR
Threshold Voltage
-
VTH
Threshold Voltage Line Regulation
∆VTH
VCC = 3 to 40V
-
2.0
5.0
mV
Input Bias Current
IBIAS
VI = 0V
-
50
400
nA
-
-
4.0
TOTAL DEVICE
Supply Current
MC34063
MC33063
ICC
VCC = 5 to 40V
CT = 0.001uF
V7 = VCC, V5>VTH
pin2 = GND
Note :
Output switch tests are performed under pulsed conditions to minimize power dissipation
2
mA
-
-
5.0
MC34063A/MC33063A
Typical Performance Characteristics
Temperature (°C)
Figure 1. Temperature Drift (VTH)
Temperature (°C)
Figure 2. Temperature Drift (IOC)
3
MC34063A/MC33063A
Mechanical Dimensions
Package
2.54
0.100
5.08
MAX
0.200
7.62
0.300
3.40 ±0.20
0.134 ±0.008
+0.10
0.25 –0.05
+0.004
0~15°
4
0.010 –0.002
3.30 ±0.30
0.130 ±0.012
0.33
MIN
0.013
0.060 ±0.004
#5
1.524 ±0.10
#4
0.018 ±0.004
#8
9.60
MAX
0.378
#1
9.20 ±0.20
0.362 ±0.008
(
6.40 ±0.20
0.252 ±0.008
0.46 ±0.10
0.79
)
0.031
8-DIP
MC34063A/MC33063A
Mechanical Dimensions (Continued)
Package
8-SOP
MIN
#5
6.00 ±0.30
0.236 ±0.012
8°
0~
+0.10
0.15 -0.05
+0.004
0.006 -0.002
MAX0.10
MAX0.004
1.80
MAX
0.071
3.95 ±0.20
0.156 ±0.008
5.72
0.225
0.41 ±0.10
0.016 ±0.004
#4
1.27
0.050
#8
5.13
MAX
0.202
#1
4.92 ±0.20
0.194 ±0.008
(
0.56
)
0.022
1.55 ±0.20
0.061 ±0.008
0.1~0.25
0.004~0.001
0.50 ±0.20
0.020 ±0.008
5
MC34063A/MC33063A
Ordering Informatio
Product Number
6
Package
MC34063AP
8-DIP
MC34063AD
8-SOP
MC33063AP
8-DIP
MC33063AD
8-SOP
Operating Temperature
0 ~ + 70°C
-40 ~ + 85°C
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.
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 2001 Fairchild Semiconductor Corporation
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