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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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AS3658 датащи(PDF) 73 Page - ams AG |
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AS3658 датащи(HTML) 73 Page - ams AG |
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73 / 158 page  www.austriamicrosystems.com Revision 1v13 72 - 157 AS3658 Data Sheet Confidential - Detail ed Descri ption-Power Management Functions 100% PMOS ON mode for low dropout regulation: For low input to output voltage difference the sdX_dis_pon bit can be set, to allow 100% duty cycle of the PMOS transistor. Low power mode: The sdX_lpo mode bit can be set all the time. This mode allows internal power down, of not used blocks during pulseskip mode, which results in a better efficiency at light output loads. Inductor setting: The step down regulator is optimized for 2.2µH at 2.2MHz and 4.7µH at 1.1MHz Table 61. Step Down DC/DC Converter parameters Symbol Parameter Min Typ Max Unit Note VIN Input voltage 3.0 5.5 V PIN VSUPPLY_1,VSUPPLY_2, VSUPPLY_3 VOUT Regulated output voltage 0.6 3.3 V VOUT_tol Output voltage tolerance -50 +50 mV output voltage <2.0V -100 +100 mV output voltage >2.0V ILIMIT Current limit 800 mA RPSW P-Switch ON resistance 0.5 Ω V_SUPPLYx=3.0V RNSW N-Switch ON resistance 0.5 Ω V_SUPPLYx=3.0V Iload Load current 0 500 mA fSW Switching frequency 2.2 MHz sdX_frequ=0, fclk_int =2.2MHz 1.1 MHz sdX_frequ=1, fclk_int =2.2MHz ηeff Efficiency 90 % Iout=100mA, Vout=2.3V, Vsup.=3V IVDD Current consumption 250 µA Operating current without load 100 Low power mode current 0.1 Shutdown current tMIN_ON Minimum on time 80 ns tMIN_OFF Minimum off time 40 ns External Components CVSD1-3, CVSD1A Output capacitor 8.0 10 µF Ceramic X5R or X7R CVSUPPLY1-3 Input capacitor 2.2 µF Ceramic X5R or X7R 4.7 µF Ceramic X5R or X7R; CVSUPPLY1 in external controller mode or 1A operating mode LSD1-SD3 Inductor 2.2 µH sdX_frequ=0, ± 10% tolerance 4.7 sdX_frequ=1, ± 10% tolerance 2.2 SD1 external controller mode; use sd1_freq=1 (1.1Mhz) |
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