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MCP1725-5002ESN Datasheet(PDF) 6 Page - Microchip Technology |
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MCP1725-5002ESN Datasheet(HTML) 6 Page - Microchip Technology |
6 / 32 page MCP1725 DS22026B-page 6 © 2007 Microchip Technology Inc. Dropout Characteristics Dropout Voltage VIN-VOUT — 210 350 mV IOUT = 500 mA, (Note 5) VIN(MIN) =2.3V Power Good Characteristics PWRGD Input Voltage Operat- ing Range VPWRGD_VIN 1.0 — 6.0 V TA = +25°C 1.2 — 6.0 TA = -40°C to +125°C For VIN < 2.3V, ISINK = 100 µA PWRGD Threshold Voltage (Referenced to VOUT) VPWRGD_TH —— — %VOUT Falling Edge 89 92 95 VOUT < 2.5V Fixed, VOUT = Adj. 90 92 94 VOUT >= 2.5V Fixed PWRGD Threshold Hysteresis VPWRGD_HYS 1.0 2.0 3.0 %VOUT PWRGD Output Voltage Low VPWRGD_L —0.2 0.4 VIPWRGD SINK = 1.2 mA, ADJ = 0V, SENSE = 0V PWRGD Leakage PWRGD_LK —1 — nA VPWRGD = VIN = 6.0V PWRGD Time Delay TPG Rising Edge RPULLUP = 10 kΩ ICDELAY = 140 nA (Typ) — 200 — µs CDELAY = OPEN 10 30 55 ms CDELAY =0.01µF — 300 — ms CDELAY =0.1 µF Detect Threshold to PWRGD Active Time Delay TVDET-PWRGD — 200 — µs VADJ or VSENSE = VPWRGD_TH + 20 mV to VPWRGD_TH - 20 mV Shutdown Input Logic High Input VSHDN-HIGH 45 —— %VIN VIN = 2.3V to 6.0V Logic Low Input VSHDN-LOW —— 15 %VIN VIN = 2.3V to 6.0V SHDN Input Leakage Current SHDNILK -0.1 ±0.001 +0.1 µA VIN =6V, SHDN =VIN, SHDN = GND AC/DC CHARACTERISTICS (CONTINUED) Electrical Specifications: Unless otherwise noted, V IN = VOUT(MAX) + VDROPOUT(MAX) (Note 1), VR = 1.8V for Adjustable Output, IOUT = 1 mA, CIN = COUT = 4.7 µF (X7R Ceramic), TA = +25°C. Boldface type applies for junction temperatures, T J (Note 7) of -40°C to +125°C Parameters Sym Min Typ Max Units Conditions Note 1: The minimum VIN must meet two conditions: VIN ≥ 2.3V and VIN ≥ VOUT(MAX) + VDROPOUT(MAX). 2: VR is the nominal regulator output voltage for the fixed cases. VR = 1.2V, 1.8V, etc. VR is the desired set point output voltage for the adjustable cases. VR = VADJ * ((R1/R2)+1). Figure 4-1. 3: TCVOUT = (VOUT-HIGH – VOUT-LOW) *10 6 / (V R * ΔTemperature). VOUT-HIGH is the highest voltage measured over the temperature range. VOUT-LOW is the lowest voltage measured over the temperature range. 4: Load regulation is measured at a constant junction temperature using low duty-cycle pulse testing. Load regulation is tested over a load range from 1 mA to the maximum specified output current. 5: Dropout voltage is defined as the input-to-output voltage differential at which the output voltage drops 2% below its nominal value that was measured with an input voltage of VOUT = VR + VDROPOUT(MAX). 6: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction to air. (i.e., TA, TJ, θJA). Exceeding the maximum allowable power dissipation will cause the device operating junction temperature to exceed the maximum +150°C rating. Sustained junction temperatures above +150°C can impact device reliability. 7: The junction temperature is approximated by soaking the device under test at an ambient temperature equal to the desired junction temperature. The test time is small enough such that the rise in the junction temperature over the ambient temperature is not significant. |
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