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TCM853 Datasheet(PDF) 2 Page - TelCom Semiconductor, Inc |
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TCM853 Datasheet(HTML) 2 Page - TelCom Semiconductor, Inc |
2 / 7 page 4-28 TELCOM SEMICONDUCTOR, INC. ABSOLUTE MAXIMUM RATINGS* Supply Voltage (VIN to GND) .................. – 0.3V to +10.5V VNEGOUT to GND ...................................... – 10.5V to 0.3V VIN to VNEGOUT ...............................................................– 0.3 to 21V VOUT to GND** ........................................ VNEGOUT to 0.3V SHDN or OSC (Pin 4) to GND ........ – 0.3V to (VIN + 0.3V) Power Dissipation (TA < 70°C) SOIC ........................................................... 470mW Operating Temperature Range C Device .............................................. 0 °C to 70°C E Device ....................................... – 40 °C to +85°C Storage Temperature Range ................ – 65 °C to +165°C Lead Temperature (Soldering, 10 sec) ................. +300 °C *This is a stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operational sections of the specifications is not implied. Exposure to Absolute Maximum Rating Conditions for extended periods may affect device reliability. **The output may be shorted to NEGOUT or GND if the package power dissipation is not exceeded. Typical short circuit current to GND is 50mA. ELECTRICAL CHARACTERISTICS: VIN between +5V and +10V; VOUT = – 4.1V; RL = Open Circuit; TA = TMIN to TMAX unless otherwise noted. A 100kHz, 50% duty cycle square wave between GND and VIN is applied to the OSC pin of the TCM852. Symbol Parameter Test Conditions Min Typ Max Unit VIN Supply Voltage Note 1 5 — 10 V VOUT Output Voltage TCM850-TCM852: VFB = 0V (Note 3) – 4.3 – 4.1 – 3.9 V TCM853: VCTRL = 4.1V – 4.2 — – 4 Output Voltage Range – 0.5 to – (VIN –1) V VFBSET Set Voltage TCM850-852: No Load – 1.32 – 1.28 – 1.24 V IQ Supply Current — 2 3 mA ISHUT Shutdown Supply Current TCM850/853: VIN = 10V, SHDN = 0V — 0.5 — µA TCM851: SHDN = 2V — 2 — TCM852: OSC Low — 0.5 — VOUT Load Regulation TCM850-TCM852: VFB = 0V (Note 3) — 4 8 mV/mA TCM853: VCTRL = 4.1V — 3 8 VOUT Ripple TCM850-TCM852 — 2 — mVp-p TCM853 — 1 — fOSC Oscillator Frequency TCM850-TCM853: TA = 25°C (Note 2) 80 100 120 kHz VIH Input High Voltage Pin 4 2 — — V VIL Input Low Voltage Pin 4 — — 0.5 V IIN Input Current Pin 4 — — ±1 µA CIN Input Capacitance Pin 4 — 10 — pF NOTES: 1. The supply voltage can drop to 4.5V, but the output is no longer guaranteed to sink 5mA at – 4.1V. 2. The TCM852 will operate with a 50kHz to 250kHz square wave of 40% to 60% duty cycle. For best performance, use an 80kHz to 120kHz square wave with 50% duty cycle. 3. IOUT = 0mA or 5mA. Reference Figures 3 and 5. REGULATED GaAs FET BIAS SUPPLY TCM850 TCM851 TCM852 TCM853 |
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