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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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SABRE-LL-I датащи(PDF) 45 Page - STMicroelectronics |
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SABRE-LL-I датащи(HTML) 45 Page - STMicroelectronics |
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45 / 141 page  SABRE-LL-I Switching regulator controller 45/141 13.4 Switching regulator controller specifications 13.5 Switching regulator controller application considerations This controller can implement a step-down switching regulator used to provide a regulated voltage in the range 0.8V – 32V. Such kind of variation could be managed by considering Table 25. Switching regulator controller operating specification Parameter Description Test condition Min Typ Max Uni t VSWDRV_SW VSWDRV_SW pin voltage range (1) 1. Under voltage rising and falling thresholds are referred to feedback pin voltage. -1 VSupply V VSWDRV_GAT E Gate drive pin voltage 0 VPump V VSWDRV_SNS Sense pin voltage VSupply -3V VSupply V Vvgs_ext Gate to source voltage for ext FET VPump V IQ Output leakage current VSupply = 36V, Tjunction = 125°C -15 +15 µA IQlp Output leakage current in “Low Power Mode” VSupply = 36V, Tjunction = 125°C -5 +5 µA VSWDRV_FB VSWDRV_FB pin current VSupply = 36V, Tjunction = 125°C -10 +10 µA Vloop Loop voltage accuracy ±3% VuvFall (1) Under voltage falling threshold 84.5 87 89.5 % VuvRise (1) Under voltage rising threshold 90.5 93 95.5 % Vuvhys (1) Under voltage hysteresys 6 % tprim_uv Under voltage deglitch filter 5 us Vovc Over current threshold voltage 250 300 350 mV tdeglitch Current limit deglitch time 50 ns tI_lim Current limit response time In normal operating mode (no UV)(2) 2. This condition is intended to simulate an extra current on output. 900 ns tI_limUV Current Limit response time in UV condition. When in Under Voltage(3) 3. This condition is intended to simulate a short circuit on output. 550 ns FregPwm Operating frequency Fosc/6 4 kHz |
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