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WM8326 データシート(PDF) 21 Page - Wolfson Microelectronics plc |
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WM8326 データシート(HTML) 21 Page - Wolfson Microelectronics plc |
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21 / 255 page  Production Data WM8326 w PD, June 2012, Rev 4.0 21 PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT VOUT Accuracy VOUT_ACC ILOAD = 1mA -2.5 +2.5 % Line Regulation VOUT LINE VIN = (VOUT + 0.5) to 5.5V, ILOAD = 75mA Note that VIN must be >= 1.71V 0.025 %/V Load Regulation VOUT LOAD ILOAD =1mA to 150mA 0.004 %/mA Dropout Voltage VIN - VOUT ILOAD =100mA, VOUT =1.8V 135 mV ILOAD =100mA, VOUT =2.5V 100 ILOAD =100mA, VOUT =3.3V 90 Undervoltage level VOUT VOUT Falling 93 % Quiescent Current IQ Normal mode, no load 110 A Low Power mode, no load 70 ILOAD = 1mA to 150mA IQ (no load) + 0.1% of load Power Supply Rejection Ratio PSRR ILOAD = 75mA, <= 1kHz 73 dB ILOAD = 75mA, 10kHz 69 ILOAD = 75mA, 100kHz 49 Output noise voltage VOUT f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 1mA 30 VRMS f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 10mA 32 f=10Hz to 100kHz; VOUT=2.8V, ILOAD = 100mA 32 On Resistance (Switch mode) RDSON VIN = 1.71V, ILOAD = 100mA 1000 m VIN = 1.8V, ILOAD = 100mA 930 VIN = 2.5V, ILOAD = 100mA 610 VIN = 3.5V, ILOAD = 100mA 430 Current Limit (Switch mode) ICL VOUT = 0V 250 mA Start-up time tstart_up No load, Output cap 4.7 µF, 90% of VOUT 70 s Shutdown time tshut_down No load, Output cap 4.7 µF, 10% of VOUT 10 ms LDO11 Unless otherwise noted: VIN = 3.8V, VOUT = 1.2V, TJ = -40°C to +125°C; Typical values are at TJ = +25ºC PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT Programmable Output Voltage VOUT 0.8 1.55 V VOUT Step Size VOUT_STEP 50 mV Output Current IOUT PVDD < 3.1V 0 10 mA PVDD ≥ 3.1V 0 25 VOUT Accuracy VOUT VIN = 2.7 to 5.5V ; ILOAD = 100µA -4 +4 % Line Regulation VOUT LINE VIN = 2.7 to 5.5V; ILOAD = 1mA 0.4 %/V Load Regulation VOUT LOAD ILOAD = 100µA to 10mA 0.2 %/mA Quiescent Current IQ No load 2.5 A Start-up time tstart_up No load, Output cap 0.1 µF, 90% of VOUT 0.3 1 ms Shutdown time tshut_down No load, Output cap 0.1 µF, 10% of VOUT 0.3 1 ms |
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