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ST3L01 数据表(PDF) 4 Page - STMicroelectronics |
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ST3L01 数据表(HTML) 4 Page - STMicroelectronics |
4 / 12 page ST3L01 4/12 Note 1: Low duty cycle pulse testing with Kelvin connections are required in order to maintain accurate data Note 2: Dropout Voltage is defined as the minimum differential voltage between VI and VO required to mantain regulation at VO. It is measured when the output voltage drops 100mV below its nominal value. Note 3: Transient response is defined with a step change in load from 10mA to IFL/2 as the time from the load step until the output voltage reaches it’s minimum value. Note 4: Minimum load current is defined as the minimum current required at the output in order to maintain regulation for the output voltage. Note 5: The regulator shall withstand 100000 reverse bias discharges of the maximum output capacitance, with no degradation, when the input voltage is switched to ground in 1 µs. Note 6: Temperature stability is the change in output from nominal over the operating temperature range. Note 7: Guaranteed by design, not tested in production. APPLICATION HINTS EXTERNAL CAPACITORS The ST3L01 requires external capacitors for stability. We suggest to solder both capacitors as close as possible to the relative pins. INPUT CAPACITORS An input capacitor, whose value is at least 0.1 µF, is required on the VDD input; the amount of the input capacitance can be increased without limit. Any good quality tantalum or ceramic low ESR capacitor may be used at the VDD input. Any input capacitor, whose value is at least 1mF is instead required on the VCC input; the amount of this input capacitance can be increased without limit. Tantalum or aluminum electrolitic capacitor can be used at the VCC input; ceramic, low ESR capacitor are not recommended. Both capacitors must be located at a distance of not modre than 0.5" from the input pins of the device and returned to a clean analog ground. OUTPUT CAPACITOR The ST3L01 is designed specifically to work with Ceramic and Tantalum capacitors. The test results of the ST3L01 stability using multilayer ceramic capacitors show that a minimum value of 0.1 µF is needed for the three regulators. This value can be increased for even better transient response and noise performance. Surface-mountable solid tantalum capacitors offer a good combination of small physical size for the capacitance value and ESR in the range need by the ST3L01. The test results show good stability for both outputs with values of at least 0.1 µF. Also this capacitor value can be increased without limit for even better performance such a transient response and noise. IMPORTANT; The output capacitor must maintain its ESR in the stable region over the full operating temperature to assure stability. Also , capacitor tolerance and variation with temperature must be considered to assure that the minimum amount of capacitance is provided at all times. For this reason, when a caramic multilayer capacitor is used, the better choise for temperature coefficent is the X7R type, which holds the capacitance within ±15% . The output capacitor should be located not more than 0.5" from the output pins of the device and returned to a clean analog ground. CO Output Capacitor (Note 5, 7) 0.1 µF CCC Input Capacitor (Note 5) 1.0 µF CDD Input Capacitor (Note 5) 0.1 µF RegTherm Therma Regulation IOUT = IFL, tPULSE = 30ms (Note 7) 0.1 0.3 %/W SVR1 Supply Voltage Rejection (VCC to Output 1) B = 100Hz to 100KHz IO1 = IFL1/10 VCC = 4.75 to 5.25V (Note 7) 30 >40 dB SVR2 Supply Voltage Rejection (VCC to Output 2) B = 100Hz to 100KHz IO2 = IFL2/10 VCC = 4.75 to 5.25V (Note 7) 30 >40 dB SVR3 Supply Voltage Rejection (VDD to Output 3) B = 100Hz to 100KHz IO3 = IFL3/10 VDD = 10.8 to 13.2V (Note 7) 40 >50 dB IVCC VCC Quiescent Current IO1 = IO2 = IO3 = 0 7 10 mA IVDD VDD Quiescent Current IO1 = IO2 = IO3 = 0 13 20 mA eN Output Noise B = 10Hz to 10KHz (Note 7) 0.003 %VOUT ∆V O Temperature Stability IO = 10mA (Note 6, 7) 0.5 %VOUT ∆V O Long Term Stability Tj = 125°C, 1000Hrs (Note 7) 0.3 %VOUT Symbol Parameter Test Conditions Min. Typ. Max. Unit |
类似零件编号 - ST3L01 |
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类似说明 - ST3L01 |
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