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TC1054-2.5VCT Datasheet(PDF) 3 Page - TelCom Semiconductor, Inc |
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TC1054-2.5VCT Datasheet(HTML) 3 Page - TelCom Semiconductor, Inc |
3 / 12 page TC1054 3 PRELIMINARY INFORMATION TC1054-01 6/12/97 50mA CMOS LDO WITH SHUTDOWN AND ERROR OUTPUT ELECTRICAL CHARACTERISTICS: VIN = VOUT + 1V, IL = 0.1mA, CL = 3.3µF, SHDN > VIH, TA = 25°C, unless otherwise noted. Symbol Parameter Test Conditions Min Typ Max Units ERROR Output VMIN Minimum Operating Voltage 1.0 — — V VOL Output Logic Low Voltage 1mA Flows to ERROR — — 400 mV VTH ERROR Threshold Voltage See Figure 2 — 0.95 x VR —V VHYS ERROR Positive Hysteresis Note 8 — 50 — mV NOTES: 1. VR is the regulator output voltage setting. VR = 2.5V, 2.7V, 3.0V, 3.3V, 5.0V. 2. TC VOUT = VOUTMAX – VOUTMIN x 10 6 VOUT x ∆T 3. Regulation is measured at a constant junction temperature using low duty cycle pulse testing. Load regulation is tested over a load range from 0.1mA to the maximum specified output current. Changes in output voltage due to heating effects are covered by the thermal regulation specification. 4. Dropout voltage is defined as the input to output differential at which the output voltage drops 2% below its nominal value. 5. Ground pin current is the regulator pass transistor gate current. The total current drawn from the input supply is the sum of the load current, ground current and supply current (i.e. IIN = ISUPPLY + IGND + ILOAD). 6. Thermal Regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a current pulse equal to ILMAX at VIN = 6V for T = 10msec. 7. 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, qJA). Exceeding the maximum allowable power dissipation causes the device to initiate thermal shutdown. Please see Thermal Considerations section of this data sheet for more details. 8. Hysteresis voltage is referenced by VR. Pin No. 1VIN Unregulated supply input. 2 GND Ground terminal. 3 SHDN Shutdown control input. The regulator is fully enabled when a logic high is applied to this input. The regulator enters shutdown when a logic low is applied to this input. During shutdown, output voltage falls to zero, ERROR is open circuited and supply current is reduced to 0.05 microamp (typical). 4 ERROR Out-of-Regulation Flag. (Open drain output). This output goes low when VOUT is out-of-tolerance by approximately – 5%. 5VOUT Regulated voltage output. PIN DESCRIPTION (SOT-23A-5) Symbol Description |
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