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TC1240ECHTR 数据表(PDF) 3 Page - Microchip Technology |
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TC1240ECHTR 数据表(HTML) 3 Page - Microchip Technology |
3 / 16 page 2003 Microchip Technology Inc. DS21516C-page 3 TC1240/TC1240A TC1240A ELECTRICAL SPECIFICATIONS Electrical Specifications: Unless otherwise noted, typical values apply at TA = +25°C. Minimum and maximum values apply for TA = -40° to +85°C, and VIN = +5.0V, C1 = C2 = 3.3 µF, SHDN = GND. Parameters Sym Min Typ Max Units Conditions Supply Current IDD — 550 900 µA RLOAD = ∞ Shutdown Supply Current ISHDN — 0.01 1.0 µA SHDN = VIN Minimum Supply Voltage VMIN 2.5 — — V Maximum Supply Voltage VMAX —— 5.5 V Output Current ILOAD 20 — — mA Sum of the RDS(ON) of the internal MOSFET Switches RSW —4 8 Ω ILOAD = 20 mA Oscillator Frequency FOSC — 160 — kHz TA = -40°C to +85°C Switching Frequency (Note 1) FSW 40 80 125 kHz TA = -40°C to +85°C Shutdown Input Logic High VIH 1.4 — — V VIN = VMIN to VMAX Shutdown Input Logic Low VIL —— 0.4 V VIN = VMIN to VMAX Power Efficiency PEFF 86 94 — % ILOAD = 5 mA Voltage Conversion Efficiency VEFF 99 99.96 — % RLOAD = ∞ Output Resistance (Note 2) ROUT — — 12 — — 25 Ω ILOAD = 20 µA TA = -40°C to +85°C Note 1: Switching frequency is one-half internal oscillator frequency. 2: Capacitor contribution is approximately 26% of the output impedance [ESR = 1 / switching frequency x capacitance]. |
类似零件编号 - TC1240ECHTR |
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类似说明 - TC1240ECHTR |
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