Datasheet

UNISONIC TECHNOLOGIES CO., LTD
UC34163
LINEAR INTEGRATED CIRCUIT
DC TO DC CONVERTER
CONTROLLER

DESCRIPTION
SOP-8
The UTC UC34163 is a monolithic regulator subsystem, intended
for use as DC-to-DC converter. This device contains a temperature
compensated reference, 2 comparators, a duty-cycle control
oscillator, driver and high current output switch.

FEATURES
* Maximum input voltage is 35V.
* Low standby current.
* Output switch current to 1.5A.
* Frequency of operation from 100Hz ~ 100kHz.
* Step-down switch regulators.

ORDERING INFORMATION
Ordering Number
Lead Free
Halogen Free
UC34163L-D08-T
UC34163G-D08-T
UC34163G-S08-R

DIP-8
Package
Packing
DIP-8
SOP-8
Tube
Tape Reel
MARKING
DIP-8
www.unisonic.com.tw
Copyright © 2014 Unisonic Technologies Co., Ltd
SOP-8
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QW-R103-037.D
UC34163
LINEAR INTEGRATED CIRCUIT

PIN CONFIGURATION

BLOCK DIAGRAM
Switch Collector
Vcc
1
2
SWC
SWE
VCC
R
Timing Capacitor
GND
3
4
TCAP
COMP
Q
GND 300mV
VREF
lSENSE
V
+ -
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
Switch Emitter
7
Comparator
Inverting Input
S
OSCILL
ATOR
CT
I
+ -
8
1.25V
VREF
ADJ
6
5
IPEAK Sense
Current Comparator
Voltage
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QW-R103-037.D
UC34163

LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS (TA=25C, unless otherwise specified)
PARAMETER
Supply Voltage
Comparator Input Voltage Range
Switch Collector Voltage
Switch Emitter Voltage
Switch Collector To Emitter Voltage
Output Switch Current
RATINGS
UNIT
35
V
-0.3 ~ +35
V
35
V
35
V
35
V
1.5
A
DIP-8
1250
mW
Power Dissipation (Ta=25C)
PD
SOP-8
625
mW
Operating Junction Temperature
TJ
+125
°C
Operating Temperature
TOPR
-20 ~ +85
°C
Storage Temperature
TSTG
-40 ~ +150
°C
Notes: 1. Absolute maximum ratings are those values beyond which the device which the device could be
permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is
not implied.
2. The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature
range and assured by design from -20°C ~+85°C, characteristic and correlation with static process control.

SYMBOL
VCC
VIN(COMP)
VC(SW)
VE(SW)
VCE(SW)
IOUT
THERMAL DATA
PARAMETER
Junction to Case

SYMBOL
DIP-8
SOP-8
RATINGS
100
160
θJC
UNIT
°C/W
ELECTRICAL CHARACTERISTICS (TA=25C, VCC = 5.0V, TA=0~70C, unless otherwise specified.)
PARAMETER
Oscillator
Frequency (CT=470pF, TA=25C)
Charging Current
Discharging Current
Oscillator Amplitude
Discharge to Charge Current Ratio
Output Switch
Saturation Voltage 1(Note)
Collector Off State Current (Note)
ADJ
Current limit Sense Voltage
Comparator
Threshold Voltage 1
Threshold Voltage 2
Threshold Voltage Line Regulation
Input Bias Current
Total Device
SYMBOL
FOSC
ICHG
TEST CONDITIONS
IDISCHG
VOSC
K
VCC=5 ~ 35V, TA=25C
VCC=5 ~ 35V, TA=25C
TA=25C
TA=25C
VCE(SAT)
IC(OFF)
ISW=1.0A
VCE=35.0V, TA=25C
MIN
TYP MAX UNIT
25
20
140
35
30
200
0.8
5.2
8.0
0.01
1.4
100
V
μA
280
300
360
mV
VTHD1
VTHD2
△VTHD1
IBIAS
1.21
280
1.24
300
2.0
50
1.29
360
5.0
400
V
mV
mV
nA
2.5
4.0
mA
ICC
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
kHz
μA
μA
V
VSENSE
VCC=5 ~ 35V
VIN=0V
VCC=5 ~ 35V, CT=470pF
V6=GND, V7>VTHD1
Note: Output switch tests are performed under pulsed conditions to minimize power dissipation.
Supply Current
45
40
260
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QW-R103-037.D
UC34163

LINEAR INTEGRATED CIRCUIT
TYPICAL APPLICATION CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
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QW-R103-037.D
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