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TS6001AIG325T Fiches technique(PDF) 7 Page - Touchstone Semiconductor Inc |
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TS6001AIG325T Fiches technique(HTML) 7 Page - Touchstone Semiconductor Inc |
7 / 12 page TS6001 TS6001DS r1p0 Page 7 RTFDS PIN FUNCTIONS PIN NAME FUNCTION 1 IN Supply Voltage Input 2 OUT +2.5V Output 3 GND Ground DESCRIPTION/THEORY OF OPERATION The TS6001 incorporates a precision 1.25-V bandgap reference that is followed by an output amplifier configured to amplify the base bandgap output voltage to a 2.5-V output. The design of the bandgap reference incorporates proprietary circuit design techniques to achieve its low temperature coefficient of 7ppm/°C and initial output voltage accuracy less than 0.08%. The design of the output amplifier’s frequency compensation does not require a separate compensation capacitor and is stable with capacitive loads up to 2200pF. The design of the output amplifier also incorporates low headroom design as it can source and sink load currents to 500μA with a dropout voltage less than 100mV. APPLICATIONS INFORMATION Power Supply Input Bypass Capacitance If there are other analog ICs within 1 to 2 inches of the TS6001 with their own bypass capacitors to GND, the TS6001 would not then require its own bypass capacitor. If this is not the case, then it is considered good analog circuit engineering practice to place a 0.1µF ceramic capacitor in as close proximity to the TS6001 as practical with very short pcb track lengths. Output/Load Capacitance Considerations As mentioned previously, the TS6001 does not require a separate, external capacitor at VOUT for transient response stability as it is stable for capacitive loads up to 2200pF. For improved load regulation transient response, the use of a capacitor at VOUT helps to reduce output voltage overshoot/undershoot to transient load current conditions. Figure 1 illustrates the TS6001’s transient load regulation performance with CLOAD = 0pF to a 50-µA transient upon a 175-µA steady-state load current. Peak transients are approximately 20mV and the TS6001 settles in less than 8µs. As shown in Figure 2, adding a capacitive load reduces peak transients at the expense of settling time. In this case, the TS6001’s output was loaded with CLOAD = 1000pF and subjected to the same transient load current profile. Peak transients were reduced to less than 10mV and the TS6001 settled in less than 10µs. Figure 2: TS6001 Transient Load Regulation Response, CLOAD = 1000pF IOUT = 175µA → 225µA → 175µA Figure 1: TS6001 Transient Load Regulation Response, CLOAD = 0pF IOUT = 175µA → 225µA → 175µA |
Numéro de pièce similaire - TS6001AIG325T |
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Description similaire - TS6001AIG325T |
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