UNISONIC TECHNOLOGIES CO., LTD
UC33063A
DC TO DC CONVERTER
CONTROLLER
DESCRIPTION
The UTC
UC33063A
is a monolithic regulator subsystem,
intended for use as DC to DC converter. This device contains a
temperature compensated band gap 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.
LINEAR INTEGRATED CIRCUIT
FEATURES
* Operation from 3.0V to 40V.
* Short Circuit Current Limiting.
* Low Standby Current.
* Output Switch Current of 1.5A without External Transistors.
* Frequency of Operation from 100Hz to 100kHz.
* Step-up, Step-down or Inverting Switch Regulators.
ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UC33063AL-D08-T
UC33063AG-D08-T
UC33063AL-S08-T
UC33063AG-S08-T
Package
DIP-8
SOP-8
Packing
Tube
Tape Reel
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Copyright © 2010 Unisonic Technologies Co., Ltd
1 of 10
QW-R103-044.B
UC33063A
PIN CONFIGURATION
LINEAR INTEGRATED CIRCUIT
PIN DESCRIPTION
PIN NO
1
2
3
4
5
6
7
8
PIN NAME
Switch Collector
Switch Emitter
Timing Capacitor
GND
Comparator Inverting
Input
V
CC
I
PEAK
Sense
Driver Collector
I/O
I
O
DESCRIPTION
Internal Darlington pairs TI collector
Internal Darlington pairs TI emitter
The value of selected capacitor controls the internal oscillator run rate
Inverting input of comparator which can set & initiate the Darlington pairs
output switch
Current sense input to monitor the voltage drop across an external
resistor placed in series with V
CC
Internal Darlington pairs TI collector
I
I
I
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2 of 10
QW-R103-044.B
UC33063A
BLOCK DIAGRAM
LINEAR INTEGRATED CIRCUIT
E
Switch Collector
1
T1
Switch Emitter
2
A
Timing Capacitor
3
COMP.
T2
Q
S
R
D
C
Is
8
Drive Collector
7
I
PEAK
Sense
CT
OSCILLATOR
6
Vcc
GND
4
1.25V
REF
B
5
Comparator Inverting
Input
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QW-R103-044.B
UC33063A
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C )
PARAMETER
SYMBOL
V
CC
V
IN(COMP)
V
C(SW)
V
E(SW)
V
CE(SW)
V
C(DR)
I
SW
LINEAR INTEGRATED CIRCUIT
RATINGS
UNIT
Supply Voltage
40
V
Comparator Input Voltage Range
-0.3 ~ +40
V
Switch Collector Voltage
40
V
Switch Emitter Voltage
40
V
Switch Collector to Emitter Voltage
40
V
Driver Collector Voltage
40
V
Switch Current
1.5
A
DIP-8
1250
Power Dissipation (Ta=25°C)
P
D
mW
SOP-8
800
Junction Temperature
T
J
+150
°C
Operating Temperature
T
OPR
-40~ +90
°C
Storage Temperature
T
STG
-65 ~ +150
°C
Note: Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
Junction to Ambient
DIP-8
SOP-8
SYMBOL
θ
JA
RATINGS
100
150
UNIT
°C/W
ELECTRICAL CHARACTERISTICS
(V
CC
=5.0V, Ta=-40~+90°C, unless otherwise specified.)
PARAMETER
Oscillator
Charging Current
Discharging Current
Oscillator Amplitude
Discharge to Charge Current Ratio
Current limit Sense Voltage
Output Switch
Saturation Voltage 1(Note)
Saturation Voltage 2(Note)
DC Current Gain(Note)
Collector Off State Current(Note)
Comparator
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
Total Device
Supply Current
SYMBOL
I
CHG
I
DISCHG
V
OSC
K
V
SENSE
V
CE(SAT)1
V
CE(SAT)2
G
I (DC)
I
C(OFF)
V
THD
V
THD
I
I(BIAS)
I
CC
TEST CONDITIONS
V
CC
=5 to 40V, Ta=25°C
V
CC
=5 to 40V, Ta=25°C
Ta=25°C
V
7
=V
CC
, Ta=25°C
I
CHG
=I
DISCHG
, Ta=25°C
I
SW
=1.0A, V
C(DRIVER)
=V
C(SW)
I
SW
=1.0A, V
C(DRIVER)
=50mA
I
SW
=1.0A, V
CE
=5.0V, Ta=25°C
V
CE
=40.0V, Ta=25°C
MIN
22
140
5.2
250
TYP MAX UNIT
31
190
0.5
6.1
300
0.95
0.45
180
0.01
42
260
7.5
350
1.3
0.7
100
μA
μA
V
mV
V
V
μA
V
mV
nA
mA
50
V
CC
=3 ~ 40V
V
IN
=0V
1.21 1.24 1.29
2.0
5.0
50
400
2.7
4.0
V
CC
=5~40V, C
T
=0.001
V
7
=V
CC
, V
C
>V
THD
, Pin2=GND
Note: Output switch tests are performed under pulsed conditions to minimize power dissipation.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
4 of 10
QW-R103-044.B
UC33063A
STEP-UP CONVERTER
170μH
L
8
180
S Q
R
7
I
PK
R
SC
0.22
V
IN
12V
6
+
100
V
CC
+
- Comp.
5
R
2
R
1
2.2k
47k
330
1.25V
R
EF
R
EG
O
SC
C
T
3
C
T
1500pF
4
Q2
Q1
2
1
LINEAR INTEGRATED CIRCUIT
1N5819
1.0μH
+
C
O
V
OUT
28V/175mA
V
OUT
+
100
Optional Filter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Output Ripple With Optional Filter
Conditions
V
IN
= 8.0V ~ 16V, I
OUT
= 175mA
V
IN
= 12V, I
OUT
= 75mA ~ 175mA
V
IN
= 12V, I
OUT
= 175mA
V
IN
= 12V, I
OUT
= 175mA
V
IN
= 12V, I
OUT
= 175mA
Results
30mV = ±0.05%
10mV = ±0.017%
400mVp-p
87.7%
40mVp-p
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www.unisonic.com.tw
5 of 10
QW-R103-044.B
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