Si9120
Vishay Siliconix
www.vishay.com
2
Document Number: 70006
S-40760—Rev. G, 19-Apr-04
ABSOLUTE MAXIMUM RATINGS
Voltages Referenced to −VIN (Note: VCC < +VIN + 0.3 V)
VCC 15 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+VIN 450 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Logic Inputs (RESET
SHUTDOWN, OSC IN, OSC OUT) −0.3 V to VCC + 0.3 V. . . . . . . . . . . . . . .
Linear Input
(FEEDBACK, SENSE, BIAS, VREF)−0.3 V to 7 V. . . . . . . . . . . . . . . . . . . . . .
HV Pre-Regulator Input Current (continuous) 5 mAa
. . . . . . . . . . . . . . . . . . . .
Continuous Output Current (Source or Sink) 125 mA. . . . . . . . . . . . . . . . . . .
Storage Temperature −65 to 150_C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operating Temperature −40 to 85_C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Junction Temperature (TJ) 150_C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Dissipation (Package)b
16-Pin Plastic DIP (J Suffix)c750 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16-Pin SOIC (Y Suffix)d900 mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Impedance (QJA)
16-Pin Plastic DIP 167_C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
16-Pin SOIC 140_C/W. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Notes
a. Continuous current may be limited by the applications maximum input
voltage and the package power dissipation.
b. Device mounted with all leads soldered or welded to PC board.
c. Derate 6 mW/_C above 25_C.
d. Derate 7.2 mW/_C above 25_C.
RECOMMENDED OPERATING RANGE
Voltages Referenced to −VIN
VCC 9.5 V to 13.5 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
+VIN 10 V to 450 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
fOSC 40 kHz to 1 MHz. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
ROSC 25 kW to 1 MW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Linear Inputs 0 to VCC − 3 V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Digital Inputs 0 to VCC
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPECIFICATIONSa
Specific Test Conditions
DISCHARGE = −V
= 0 V,
LIMITS
D Suffix −40 to 85_C
Parameter Symbol
,
VCC = 10 V +VIN = 300 V
RBIAS = 390 kW, ROSC = 330 kWTEMPBMINCTYPDMAXCUnit
Reference
Output Voltage VROSC IN = − VIN (OSC Disabled)
RL = 10 MW
Room
Full
3.88
3.82
4.0 4.12
4.14 V
Output ImpedanceeZOUT Room 15 30 45 kW
Short Circuit Current ISREF VREF = −VIN Room 70 100 130 mA
Temperature StabilityeTREF Full 0.5 1.0 mV/_C
Oscillator
Maximum FrequencyefMAX ROSC = 0 Room 1 3 MHz
CSTRAY Pin 9 5 pF
ROSC = 330 kWRoom 80 100 120
Initial Accuracy fOSC CSTRAY Pin 9 5 pF
ROSC = 150 kWRoom 160 200 240
kHz
Voltage Stability Df/f Df/f = f(13.5 V) − f(9.5 V) / f(9.5 V) Room 10 15 %
Temperature CoefficienteTOSC Full 200 500 ppm/_C
Error Amplifier
Feedback Input Voltage VFB FB Tied to COMP
OSC IN = − VIN (OSC Disabled) Room 3.92 4.08 V
Input BIAS Current IFB OSC IN = − VIN, VFB = 4 V Room 25 500 nA
Input OFFSET Voltage VOS OSC IN = − VIN Room 15 40 mV
Open Loop Voltage GaineAVOL OSC IN = − VIN Room 60 80 dB
Unity Gain BandwidtheBW OSC IN = − VIN Room 1.0 1.5 MHz