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TC1222ECH Datasheet(PDF) 2 Page - Microchip Technology |
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TC1222ECH Datasheet(HTML) 2 Page - Microchip Technology |
2 / 16 page TC1221/TC1222 DS21367B-page 2 2002 Microchip Technology Inc. 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings* Input Voltage (VIN to GND)....................... +6.0V, -0.3V Output Voltage (OUT to GND).................. -6.0V, +0.3V Current at OUT Pin..............................................50mA Short-Circuit Duration – OUT to GND ............Indefinite Power Dissipation (TA ≤ 70°C) 6-Pin SOT-23A .........................................240mW Operating Temperature Range............. -40°C to +85°C Storage Temperature (Unbiased) .......-65°C to +150°C *Stresses above those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only and functional operation of the device at these or any other conditions above those indicated in the operation sections of the specifications is not implied. Exposure to Absolute Maximum Rating conditions for extended periods may affect device reliability. TC1121 ELECTRICAL SPECIFICATIONS Electrical Characteristics: TA = -40°C to +85°C, VIN = +5V, C1 = C2 = 1µF, (TC1221), C1 = C2 = 0.22µF (TC1222), Typical values are at TA = +25°C. Symbol Parameter Min Typ Max Units Device Test Conditions IDD Supply Current — — 290 1800 600 2800 µA TC1221 TC1222 ISHDN Shutdown Supply Current — 0.01 1.0 µA SHDN = GND, VIN = 5V (Note 2) VMIN Minimum Supply Voltage 1.8 —— VRLOAD = 1kΩ VMAX Maximum Supply Voltage —— 5.5 V RLOAD = 1kΩ FOSC Oscillator Frequency 81 550 125 750 169 950 kHz TC1221 TC1222 VIH SHDN Input Logic High 1.4 — VVIN = VMIN to VMAX VIL SHDN Input Logic Low —— 0.4 V VIN = VMIN to VMAX PEFF Power Efficiency — — 90 70 — — % TC1221 TC1222 RLOAD = 1kΩ VEFF Voltage Conversion Efficiency 94 96 — %RLOAD = ∞ ROUT Output Resistance — — 25 65 Ω ILOAD = 0.5mA to 25mA (Note 1) TWK Wake-up Time From Shutdown Mode — — 80 25 — — µsec TC1221 TC1222 RLOAD = 1kΩ Note 1: Capacitor contribution is approximately 20% of the output impedance [ESR = 1/ pump frequency x capacitance]. 2: VIN is guaranteed to be disconnected from OUT when the converter is in shutdown.. |
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