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Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
FEATURES
Linearly Decreasing PWM Frequency Green-Mode under Light-Load and Zero-Load Conditions Constant Voltage (CV) and Constant Current (CC) No Secondary Feedback Low Startup Current (5uA) Low Operating Current (3.6mA) Leading-Edge Blanking Constant Power Limit Universal AC Input Range Synchronized Slope Compensation 150C OTP Sensor with Hysteresis VDD Over Voltage Clamping Cycle-by-Cycle Current Limiting Under Voltage Lockout (UVLO) Fixed PWM Frequency (65kHz/100kHz) Gate Output Maximum Voltage Clamped at 16.7V Small SOT-26 Package
DESCRIPTION
This highly integrated PWM controller provides several features to enhance the performance of low power flyback converters. To minimize standby power consumption, the proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load and zero-load conditions. This green-mode function enables the power supply to easily meet international power conservation requirements. The supply voltage VDD is also used for feedback compensation, to regulate the output voltage without requiring a conventional TL431 and a photo-coupler. Another advantage of the SG6849 is that the typical startup current is only 5uA, while the typical operating current can be as low as 3.6mA. A large startup resistance could be used to achieve even higher power conversion efficiency. Built-in synchronized slope compensation maintains the stability of peak current-mode control. Proprietary internal compensation ensures constant output power limiting over a universal range of AC input voltages, from 90VAC to 264VAC.The SG6849 provides many protection functions. Pulse-by-pulse current limiting ensures a constant output current, even if a short circuit occurs. Also, the internal protection circuit will disable PWM output, if VDD exceeds 22.7V. The gate output is clamped at 16.7V to protect the power MOS from over-voltage damage. The built-in over temperature protection (OTP) function will shutdown the controller at 150C with a 20C hysteresis. The SG6849 is designed to provide a low-cost total solution for flyback converters. It is available in a small footprint, 6-pin, SOT-26 package.
APPLICATIONS
Low-power flyback power converters, such as Battery chargers for cellular phones, cordless phones, PDAs, digital cameras, and power tools. Power adapters for ink jet printers, video game consoles, and portable audio players. Open-frame SMPS for TV/DVD standby and other auxiliary supplies, home appliances, consumer electronics, and PC 5V standby-power. Replacements for linear transformers and RCC SMPS.
TYPICAL IC APPLICATION
V IN
R IN D1
VDD G ATE
DO CO W AU X VO
Q1
C IN
SE NSE GN D
RS
(c) System General Corp. Version 1.0(IRO33.0002.B3)
-1-
www.sg.com.tw Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
MARKING INFORMATION
PIN CONFIGURATION
SOT-26
M: Mask Version MXYWW X: B= SG6849-65T C= SG6849-100T Y: Year 1 WW: Work Week GND FB NC 1 2 3 6 5 4 GATE VDD SENSE
8 ZZZ: 65 or 100
DIP-8
SG6849-ZZZD
XXXXXXXYYWWV
XXXXXXX: Wafer Lot YY: Year WW: Week V: Assembly Location
GATE VDD NC SENSE
1 2 3 4
8 7 6 5
GND FB NC NC
1
ORDERING INFORMATION
Part Number
SG6849-65T SG6849-100T SG6849-65D SG6849-100D
PWM Frequency
65kHz 100kHz 65kHz 100kHz
Package
6-Pin SOT-26 6-Pin SOT-26 8-pin DIP-8 8-pin DIP-8
PIN DESCRIPTIONS
Name
GATE VDD NC SENSE NC NC FB GND
Pin No. Type DIP-8 SOT-26
1 2 3 4 5 6 7 8 6 5 NA 4 3 NA 2 1 Supply
Function
Power supply. NC pin. Current sense. It senses the voltage across a sensed resistor. To provide over-current
Driver Output The totem-pole output driver to drive the power MOSFET.
Analog Input protection, PWM output is disabled if the voltage exceeds an internal threshold. This pin also provides current information for current-mode control. NC pin. NC pin. Feedback. The FB pin provides feedback information to the internal PWM comparator. Analog Input This feedback is used to control the duty cycle. When no feedback is provided, this pin is left open. Supply Ground.
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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www.sg.com.tw Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
BLOCK DIAGRAM
GND 8(1) OTP SENSE VDD Driver
1(6) GATE
Internal Supply VDD 2(5)
OSC
S R
Q PWM Comp Power Limiter Slope Compensation OCP Comp VDD Blanking Circuit 4.5V 4(4) SENSE
UVLO 17V/8V Green Mode Controller
VDD VDDZ 7(2) FB
DIP-8(SOT-26)
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter
DC Supply Voltage* VDD VFB VSENSE PD RJA RJC TJ TSTG TL Zener Clamp Zener Current FB Pin Input Voltage Sense Pin Input Voltage Power Dissipation Thermal Resistance (Junction to Air) Thermal Resistance (Junction to Case) Operating Junction Temperature Storage Temperature Range Lead Temperature (Soldering) ESD Capability, Human Body Model ESD Capability, Machine Model *All voltage values, except differential voltages, are given with respect to the network ground terminal. 20 sec 10 sec SOT-26 DIP-8 SOT-26 DIP-8 SOT-26 DIP-8
Value
25 30 10 -0.3 to 7 -0.3 to 7 300 243.3 113.0 115 67.1 150 -55 to +150 220 260 3.0 300
Unit
V V mA V V mW C/W C/W C C C kV V
OPERATING CONDITIONS
Symbol
VDD TA
Parameter
DC Supply Voltage Operating Ambient Temperature
Value
<22.7 -30 to +85
Unit
V C
ELECTRICAL CHARACTERISTICS (VDD=15V, TA=25C) Feedback Input Section
Symbol
IOZ VFB RFB VDDZ
Parameter
Zero Duty-Cycle FB Input Current Open Loop Voltage Input Impedance VDD Feedback Threshold Voltage*
Test Condition
Min.
Typ.
1.15 4.5
Max.
1.4
Unit
mA V k
FB Input Current = 0.1mA FB Input Current = 0mA FB Input Current = 0.8mA 20 18
2.4 22.7 20 25 22
V V
*The feedback input is pulled by a transistor that is controlled by the VDD signal while VDD VDDZ.
(c) System General Corp. Version 1.0(IRO33.0002.B3)
-4-
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
Current Sense Section
Symbol
TPD
Parameter
Propagation Delay
Test Condition
VDD = 20V
Min.
0.84 0.72 0.58 0.76 0.65 0.52
Typ.
100 0.89 0.77 0.63 0.81 0.70 0.57
Max.
0.94 0.82 0.68 0.86 0.75 0.62
Unit
ns V V V V V V
Current Limiting Valley Threshold Voltage for 65kHz VDD = 15V VTH,VA VDD = 10V VDD = 20V Current Limiting Valley Threshold Voltage for 100kHz VDD = 15V VDD = 10V
TON
TOFF
VLIMIT Ramp
VTH,FT
0.77V
High-Line Sense Voltage Low-Line Sense Voltage
VTH,VA
0V T1 T2
Oscillator Section
Symbol
FOSC FOSC FOSC-G-BK FOSC-G-OFF IFB-G-OFF FDV VDD-TH-G
Parameter
SG6849-65 Frequency SG6849-100 Frequency Green-Mode Burst Back Frequency* Green-Mode OFF Frequency* Green-Mode OFF FB Input Current Frequency Variation versus VDD Deviation VDD-Low Threshold Voltage for Exiting Green-Mode OFF
Test Condition
Min.
60 92 20 0.9
Typ.
65 100 25 0 1.15 VDD
OFF+1.5
Max.
70 108 30 1.4 2 VDD
OFF+2.0
Unit
kHz kHz kHz kHz mA % V
VDD = 10 to 20V VDD
OFF+1.0
*Please see the "Green-Mode Burst Back (FOSC-G-BK) and Green-Mode OFF Frequency (FOSC-G-OFF) vs. VDD" curves.
(c) System General Corp. Version 1.0(IRO33.0002.B3)
-5-
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
Output Section
Symbol
DCYMAX Bnk VOL VOH TR TF VCLAMP
Parameter
Maximum Duty Cycle Leading Edge Blanking Time Output Voltage Low Output Voltage High Rising Time Falling Time Output Clamp Voltage
Test Condition
Min.
70
Typ.
75 310
Max.
80 1.5
Unit
% ns V V ns ns
VDD = 15V, IO = 10mA VDD = 15V, IO = 10mA VDD = 15V, CL = 1nF VDD = 15V, CL = 1nF VDD = 20V 8 200 80 16.7
18
V
Over Temperature Protection (OTP)
Symbol
Temp-Off Temp-Restart
*1 *2
Parameter
Protection Junction Temperature Restart Junction Temperature
*2 *1
Test Condition
Min.
Typ.
150 130
Max.
Unit
C C
When activated, the output is disabled and the latch is turned off. This is the threshold temperature for enabling the output again and resetting the latch, after over temperature protection has been
activated.
VDD Section
Symbol
VDD ON VDD OFF IDD ST IDD OP VDD CLAMP
Parameter
Turn-On Threshold Voltage Turn-Off Threshold Voltage Startup Current Operating Supply Current Zener Diode Breakdown Voltage
Test Condition
Min.
16 7.5
Typ.
17 8 5 3.6 28
Max.
18 8.5 30 6 30
Unit
V V uA mA V
VDD = 15V VDD = 15V GATE is Open IDD = 10mA
(c) System General Corp. Version 1.0(IRO33.0002.B3)
-6-
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
TYPICAL CHARACTERISTICS SG6849-65
Start-Up Current (I DD ST ) vs. Temperature
9.0
4.5
Operating Supply Current (I DD OP) vs. Temperature
8.0
4.3
VDD=15.0V
4.0 IDD OP (mA) VDD=15.0V
7.0 IDD ST (uA)
6.0
3.8
5.0
3.5
4.0
3.3
3.0 -40 -25 -10 5 20 35 50 65 80 95 110 125
3.0 -40 -25 -10 5 20 35 50 65 80 95 110 125
T EMPERATURE ()
T EMPERATURE ()
VFB Open Loop Voltage (VFB) vs. Temperature
5.0 80.0 4.8 VDD=15.0V 78.0
Maximum Duty Cycle (DCYMAX) vs. Temperature
VDD=15.0V
DCY MAX (%) -40 -30 -15 0 25 50 75 100 125
4.6 VFB (V)
76.0
4.4
74.0
4.2
72.0
4.0
70.0 -40 -25 -10 5 20 35 50 65 80 95 110 125
T EMPERATURE ()
T EMPERAT URE ()
Oscillator Frequency (F OSC) vs. Temperature
70.0 0.80
Valley Threshold Voltage (VTH,VA) vs. Temperature
65.0 FOSC (kHz)
0.78 VDD=15.0V 0.76 VDD=15.0V 0.74
60.0
55.0 0.72
50.0 -40 -25 -10 5 20 35 50 65 80 95 110 125
VTH,VA (V)
0.70 -40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERAT URE ()
T EMPERAT URE ()
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
Turn-On Threshold Voltage (VDD ON) vs. Temperature
9.00 18.0 17.5 17.0 VDD ON (V) 16.5 16.0 7.50 15.5 15.0 -40 -25 -10 5 20 35 50 65 80 95 110 125
Turn-Off Threshold Voltage (VDD OFF) vs. Temperature
8.50 VDD OFF (V)
8.00
7.00 -40 -25 -10 5 20 35 50 65 80 95 110 125 T EMPERAT URE ()
TEMPERAT URE ( )
Output Voltage Low (VOL) vs. Temperature
0.40 30.0
Green-Mode Burst Back(F OSC-G-BK) and Green-Mode OFF Frequency(F OSC-G-OFF) vs. VDD
FOSC-G-BK 25.0
0.30 20.0 0.20 FOSC (kHz) VOL (V)
15.0
0.10
10.0
5.0 0.00 -40 -25 -10 5 20 35 50 65 80 95 110 125 0.0 8 8.5 9 VDD (V) 9.5 10 FOSC-G-OFF
TEMPERAT URE ()
Valley Threshold Voltage(VTH,VA) vs. VDD
1.00
1.10
VLIMIT Ramp vs. Duty Cycle
0.90
1.05
VTH,VA (V)
Vlimit (V)
0.80
VDD=15.0V 1.00
0.70
0.60
0.95
0.50 9 10 11 12 13 14 15 16 17 18 19 20
0.90 10 15 20 25 Duty Cycle (%) 30 35 40
VDD (V)
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
OPERATION DESCRIPTION
SG6849 devices integrate many useful functions for low power switch mode power supplies. The following descriptions highlight the key features of the SG6849.
Over Temperature Protection (OTP)
The SG6849 has a built-in temperature sensing circuit to shut down PWM output once the junction temperature exceeds 150C. While PWM output is shut down, the VDD voltage will gradually drop to the UVLO voltage. Some of the SG6849's internal circuits will be shut down, and VDD will gradually start increasing again. When VDD reaches 17V, all the internal circuits, including the temperature sensing circuit, will start operating normally. If the junction temperature is still higher than 150C, the PWM controller will be shut down immediately. This situation will continue until the temperature drops below 130C. The PWM output will then be turned back on. The temperature hysteresis window for the OTP circuit is 20C.
Startup Current
The required startup current is only 5uA. This allows a high-resistance, low-wattage startup resistor to be used to supply the controller's startup power. A 1.5 M/0.25W startup resistor can be used over a wide input range (100V-240V AC) with very little power loss.
Operating Current
The operating current is normally 3.6mA. The low operating current results in higher efficiency and reduces the required VDD hold-up capacitance. A 10uF/25V VDD hold-up capacitor can be used over a wide input range (100V-240V AC) with very little power loss.
VDD Over Voltage Clamping
VDD over voltage clamping is built in to prevent damage from over-voltage conditions. When VDD exceeds 22.7V, PWM output is shut down. Over-voltage conditions may be caused by an open photo-coupler loop or a short circuit in the output.
Green Mode Operation
The proprietary green-mode function provides off-time modulation to linearly decrease the switching frequency under light-load and zero-load conditions. The on-time is limited to provide better protection against brownouts and other abnormal conditions. This green-mode function dramatically reduces power consumption under light-load and zero-load conditions. Power supplies using the SG6849 can easily meet international restrictions regarding standby power-consumption.
Oscillator Operation
The oscillation frequency is fixed at 65kHz for the SG6849-65, and at 100kHz for the SG6849-100.
Leading Edge Blanking
Each time the power MOSFET is switched on, a turn-on spike will inevitably occur at the sense-resistor. To avoid premature termination of the switching pulse, a 310ns leading-edge blanking time is built in. Conventional RC filtering is not necessary. During this blanking period, the current-limit comparator is disabled, and it cannot switch off the gate drive.
Constant Voltage (CV) and Constant Current (CC) without Feedback
The SG6849 can tightly regulate the output voltage and provide over current protection without requiring secondary-side feedback signals. For improved CV and CC accuracy, the transformer leakage inductance should be reduced as much as possible.
Constant Output Power Limit
When the SENSE voltage across the sense resistor RS reaches the threshold voltage (around 1.0V), the output GATE drive will be turned off following a small -9-
(c) System General Corp. Version 1.0(IRO33.0002.B3)
www.sg.com.tw
Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback propagation delay TPD. This propagation delay will introduce an additional current proportional to TPD*VIN/LP. The propagation delay is nearly constant regardless of the input line voltage VIN. Higher input line voltages will result in larger additional currents. Thus, under high input-line voltages the output power limit will be higher than under low input-line voltages. Over a wide range of AC input voltages, the variation can be significant. To compensate for this, the threshold voltage is adjusted by adding a positive ramp. This ramp signal can vary from 0.77V to 1.05V for SG6849-65 and 0.70 to 1.03V for SG6849-100, and it flattens out at 1.05V and 1.03V respectively. A smaller threshold voltage forces the output GATE drive to terminate earlier, thus reducing total PWM turn-on time and making the output power equal to that of the low line input. This proprietary internal compensation feature ensures a constant output power limit over a wide range of AC input voltages (90VAC to 264VAC).
SG6849
Gate Output
The SG6849 BiCMOS output stage is a fast totem pole gate driver. Cross-conduction has been avoided to minimize heat dissipation, increase efficiency, and enhance reliability. The output driver is clamped by an internal 16.7V Zener diode in order to protect the power MOSFET transistors against any harmful over-voltage gate signals.
Slope Compensation
The sensed voltage across the current sense resistor is used for current mode control and pulse-by-pulse current limiting. The built-in slope compensation function improves power supply stability. Furthermore, it prevents sub-harmonic oscillations that normally would occur because of peak current mode control. A positively sloped, synchronized ramp is activated by the SG6849 with every switching cycle. The slope of the ramp is
Under Voltage Lockout (UVLO)
The turn-on/turn-off thresholds of the SG6849 are fixed internally at 17V/8V. To enable the SG6849 during startup, the hold-up capacitor must first be charged to 17V through the startup resistor. The hold-up capacitor will continue to supply VDD before energy can be delivered from the auxiliary winding of the main transformer. VDD must not drop below 8V during this startup process. This UVLO hysteresis window ensures that the hold-up capacitor can adequately supply VDD during startup.
0.33 x Duty . Duty (max)
Noise Immunity
Noise from the current sense or the control signal may cause significant pulse width jitter, particularly in continuous-conduction mode. Slope compensation helps alleviate this problem. Good placement and layout practices should be followed. The designer should avoid long PCB traces and component leads. Compensation and filter components should be located near the SG6849. Finally, increasing the power-MOS gate resistance is advised.
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
REFERENCE CIRCUIT 3W Flyback 5V/0.6A Circuit, without Secondary-Side Feedback
1
L
F1 CX1
2-
1
L1
2
BD1
+4
C1
+
R1 C2
1
C3 R5
R3 R4
10
T1
1,2
D4
2 1 1
L2
2
N
VO
3
R2
D1
22
9
R10
8 5
C7 C8
+
1
1 2 3
U4 GND FB NC SG6849 GATE VDD SENSE
6 5 4
R7
D5
2
+
C9
1 3
Q1
7 3,4
GND
R6 D2
1 2
R8
+
CY1 C4
BOM
Symbol
BD1 CX1 CY1 C2 C1 C3 C4 C7 C8 C9 D1 D2 D4 D5 F1 (Option) (Option) (Option) (Option)
Component
BD 1A/500V YC 472pF/400V (Y1) YC 102pF/400V (Y1) EC 10uF/400V 105 CC 103pF/500V CC 1000pF/500V EC 10uF/50V CC 102pF/100V 1206 EC 470uF/10V 105 EC 220uF/10V 105 Diode FRI07 Diode FR102 Diode SB360 ZD 6.8V 0.5W R 1/0.5W
Symbol
L1 L2 Q1 R1,R2 R3,R4 R5 R6 R7 R8 R10 T1 U4 (Option)
Component
20mH 6*8mm 10uH 6mm MOSFET 1A/600V R 750k 1206 R 47k 1206 R 47 1206 R 4.7 1206 R 100 0805 R 10 1206 R 10 1206 EE-16 IC SG6849 (Green PWM IC)
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
3W Flyback 5V/0.6A Circuit, with Secondary-Side Feedback
1
L
F1 1 BD1 +4 +
L1 2 C3 C2 R5 R4 10 1 9 8 5 Q1 1 3 2 1 R10 22 C7 + C8 T1 1,2 2 D4 1 1 L2 2 R3
2-
+ C1
N
R1 3
Vo
D1
D5
+ C9
R7
7 R6 1 2 3 C6 U1 SG6849 GND FB NC GATE VDD SENSE R2 6 R8 5 4 + C4 1 D2 2
3,4
GND
R11 U2 4 3 1 R14 2 3 C10 CY1 U3 1 R12 2 R13
BOM
Symbol
BD1 CY1 C2 C1 C3 C4 C6 C7 C8 C9 C10 D1 D2 D4 D5 F1 L1 BD1 (Reference only) (Option) (Reference only) (Option)
Component
DI106 1A/600V YC 102p/400V 10uF/400V 10*16mm 105 103p/500V (0.01uF/500V) 1000p/500V CER 10u/50V 5mm 472p 0805 102p/100V 1206 470u/10V 8*11.5mm 105 470u/10V 8*11.5mm 105 222p 0805 FR107 FR102 SB360 (3A/60V; Schottky) ZD/6.8V 0.5W 11/2W Resistor 20mH 6*8mm DI106 1A/600V
Symbol
L2 Q1 R1,R2 R4,R3 R5 R6 R7 R10 R8 R11 R12 R13 R14 T1 U1 U2 U3 L2
Component
10uH 6mm MOSFET 1A/600V 750k 1206 47k/1206 47 1206 3.7 1206 100 0805 10 1206 5 1206 100 1/8W 33k 0805 33k 1/8W 4.7k 0805 EE-16 SG6849 (Green PWM IC) PC817 TL431 10uH 6mm
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
PACKAGE INFORMATION The SOT-26 Package
D b 6 4 Detail A
E1
E
1 e1
e3
c
1
R
A2
A
L A1 L1
1 Detail A
Dimensions:
Symbol
A A1 A2 b c D E E1 e e1 L L1 L2 R R1 1
Millimeters Min. Typ. Max.
1.45 0.15 1.30 0.50 0.22
Inches Min. Typ. Max.
0.057 0.006 0.051 0.020 0.009
0.90 0.30 0.08
1.15
0.036 0.011 0.003
0.045
0.30
2.90 2.80 1.60 0.95 1.90 0.45 0.60 0.25
0.60
0.020
0.114 0.110 0.063 0.037 0.075 0.018 0.024 0.010
0.10 0.10 0 5
4 10
0.25 8 15
0.004 0.004 0 5
4 10
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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L2
R1

0.24
0.25 8 15
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Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
The DIP-8 Package
D
8 5
E1
E
eB
1
4
A1
A2
L b1 b e
Dimensions:
Symbol
A A1 A2 b b1 D E E1 e L eB
Millimeter Min. Typ.
0.381 3.175
A
Max.
5.334
Inch Min.
0.015 0.125
Typ.
Max.
0.210
9.017 6.223 2.921 8.509 0
3.302 1.524 0.457 9.271 7.620 6.350 2.540 3.302 9.017 7
3.429
10.160 6.477 3.810 9.525 15
0.355 0.245 0.115 0.335 0
0.130 0.060 0.018 0.365 0.300 0.250 0.100 0.130 0.355 7
0.135
0.400 0.255 0.150 0.375 15
(c) System General Corp. Version 1.0(IRO33.0002.B3)
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Dec.29, 2003
Product Specification Low-Power Green-Mode PWM Flyback Power Controller without Secondary Feedback
SG6849
DISCLAIMERS
LIFE SUPPORT
System General's products are not designed to be used as components in devices intended to support or sustain human life. Use of System General's products in components intended for surgical implant into the body, or other applications in which the failure of System General's products could create a situation where personal death or injury may occur, is not authorized without the express written approval of System General's Chief Executive Officer. System General will not be held liable for any damages or claims resulting from the use of its products in medical applications.
MILITARY
System General's products are not designed for use in military applications. Use of System General's products in military applications is not authorized without the express written approval of System General's Chief Executive Officer. System General will not be held liable for any damages or claims resulting from the use of its products in military applications.
RIGHT TO MAKE CHANGES
System General reserves the right to change this document and/or this product without notice. Customers are advised to consult their System General sales representative before ordering. (c) System General Corp. Version 1.0(IRO33.0002.B3) - 15 -
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