SECOS SGSC34063

SGSC34063
Elektronische Bauelemente
Universal DC To DC Converter
RoHS Compliant Product
SOP-8
Description
0.19
0.25
0.40
0.90
45
o
0.375 REF
6.20
5.80
The SGSC34063 is a monolithic regulator subsystem,
intended for use as DC to DC conv erter.
This device contains a temperature put switch.
It can be used for step down, compensated band
gap reference, a duty-cycle control oscillator,
driver and high current out step-up
or inverting switching regulators
as well as for series pass regulators.
0.25
3.80
4.00
1.27 Typ.
0.35
0.49
0.10 0.25
4.80
5.00
1.35
1.75
o
0
o
8
Dimensions in millimeters
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.
8
Date Code
7
6
5
3
4
34063
1
2
Pin Configuration & Representative Schematic Diagram
rogrammed by
pacitor CT to ground .Operation 500kHz
nts up to
This is the reference output .It provides charging current for capacitor CT
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 1 of 5
SGSC34063
Elektronische Bauelemente
Universal DC To DC Converter
Absolute Maximum Ratings at Ta = 25 °C
Parameter
Symbol
Value
Unit
Operating Junction Temperature
Tj
150
°C
Operating Ambient Temperature Range
Ta
0 ~ 70
°C
Storage Temperature Range
Tstg
-65 ~ 150
°C
Supply Voltage
Vcc
40
V
Vi(comp)
-0.3 ~ +40
V
Switch Collector Voltage
Vc(sw)
40
V
Switch Emitter Voltage
Ve(sw)
40
V
Switch Collector to Emitter Voltage
Vce(dr)
40
V
Switch Current
Isw
1.5
A
Power Dissipation
Pd
625
mW
RθJA
160
°C / W
Comparator Input Voltage Range
Thermal Resistance
Electrical Characteristics (0 °C≦TA≦70°C, Vcc=5V unless otherwise specified)
Parameter
Symbol
Test Conditions
Min.
Typ.
Max.
Unit.
Frequency
fosc
VPin5=0 V, CT=1.0 nF, Ta=25°C
24
42
48
kHz
Charging Current
Ichg
Vcc = 5 to 40, Ta = 25°C
22
31
42
uA
Idischg
Vcc = 5 to 40, Ta = 25°C
140
190
260
uA
Oscillator
Discharging Current
Discharge to Chart Current Ratio
Current Limit Sense Voltage
K
Vsense
Pin7 to Vcc, Ta = 25°C
5.2
6.1
7.5
Ichg = Idischg, Ta = 25°C
250
300
350
mV
Output Switch
Saturation Voltage 1 (note)
Vce(sat)1
Isw = 1A, Vc(driver) = Vc(sw)
0.95
1.3
V
Saturation Voltage 2 (note)
Vce(sat)2
Isw = 1A, Vc(driver) = 50mA
0.45
0.7
V
100
uA
DC Current Gain (note)
Collect Off State Current (note)
Gi(DC)
Ic(off)
Isw = 1A, Vce = 5V, Ta = 25°C
50
Vce = 40V, Ta = 25°C
180
0.01
Comparator
Vcc = 5V, Ta = 25°C
Threshold Voltage
Threshold Voltage Line Regulation
Input Bias Current
Vth
Vth
Ibias
34063A
1.241
1.25
1.259
V
34063B
1.237
1.25
1.262
V
34063C
1.225
1.25
1.275
V
Vcc = 3 ~ 40V
2
5
mV
Vi = 0V
50
400
nA
Vcc = 5 ~ 40V,
Ct = 0.001,
Pin7 to Vcc,
Vc > Vth,
Pin2 = GND
2.7
4
mA
Total Device
Supply Current
Icc
Note : Output switch tests are performed under pulsed conditions to minimize power dissipation.
ht tp://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 2 of 5
SGSC34063
Elektronische Bauelemente
Universal DC To DC Converter
Characteristics Curve
(UVLO)
ht tp://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 3 of 5
SGSC34063
Elektronische Bauelemente
Universal DC To DC Converter
Application Circuit
(1) Step-Up Converter
Test
Line Regulation
Load Regulation
Output Ripple
Efficiency
Output Ripple With Optional Filter
Conditions
Vin = 8V to 16V, Io = 175mA
Vin = 12V, Io = 75mA to 175mA
Vin = 12V,Io = 175Ma
Vin = 12V, Io = 175mA
Vin = 12V, Io = 175mA
30mV = ± 0.05%
10mV = ± 0.017%
400mVp-p
87.7%
40mVp-p
Results
External Current Boost Connections for Ic Peak Greater than 1.5A
External NPN Switch
NOTE
External NPN Saturated Switch (NOTE)
If the switch is driven into hard saturation (non-Darlington configuration) at low switch currents ( 300mA) and high driver currents ( 30mA) it may
take up to 2.0 us 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.
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
Page 4 of 5
SGSC34063
Elektronische Bauelemente
Universal DC To DC Converter
(2) Step-Down Converter
Test
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
Output Ripple With Optional Filter
Conditions
Vin = 15V to 25V, Io = 50mA
Vin = 25V, Io = 50mA to 500mA
Vin = 25V,Io = 500mA
Vin = 25V, RL = 0.1
Vin = 25V, Io = 500mA
Vin = 25V, Io = 500mA
12mV = ± 0.12%
3mV = ± 0.03%
120mVp-p
1.1A
83.7%
40mVp-p
Results
External Current Boost Connections for Ic Peak Greater than 1.5A
External NPN Switch
ht tp://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
External PNP Saturated Switch
Any changing of specification will not be informed individual
Page 5of 5
SGSC34063
Elektronische Bauelemente
Universal DC To DC Converter
Voltage Inverting Converter
Test
Line Regulation
Load Regulation
Output Ripple
Short Circuit Current
Efficiency
Output Ripple With Optional Filter
Conditions
Vin = 4.5V to 6.0V, Io = 100mA
Vin = 5V, Io = 10mA to 100mA
Vin = 5V,Io = 100mA
Vin = 5V, RL = 0.1
Vin = 5V, Io = 100mA
Vin = 5V, Io = 100mA
Results
3mV = ± 0.12%
0.022V = ± 0.09%
500mVp-p
910mA
62.2%
70mVp-p
External Current Boost Connections for Ic Peak Greater than 1.5A
External NPN Switch
ht tp://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
External PNP Saturated Switch
Any changing of specification will not be informed individual
Page 6 of 6