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L6995S Scheda tecnica(PDF) 3 Page - STMicroelectronics |
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L6995S Scheda tecnica(HTML) 3 Page - STMicroelectronics |
3 / 26 page Obsolete Product(s) - Obsolete Product(s) 3/26 L6995S 5VCC IC Supply Voltage. 6 GND Signal ground 7 VREF 0.9 V voltage reference. Connect max. a 10nF ceramic capacitor between this pin and ground. This pin is capable to source or sink up to 250uA 8 VFB PWM comparator feedback input. Short this pin to INT pin when using the integrator function, or to VSENSE pin without integrator. 9 OSC Connect this pin to the input voltage through a voltage divider in order to provide the feed- forward function. It cannot be left floating. 10 SS Soft start pin. A 5 µA constant current charges an external capacitor which value sets the soft- start time. 11 ILIM An external resistor connected between this pin and GND sets the current limit threshold. 12 SHDN Shutdown. When connected to GND the device and the drivers are OFF. It cannot be left floating. 13 OVP Open drain output. During the over voltage condition it is pulled up by an external resistor. 14 PGOOD Open drain output. During the soft start and in case of output voltage fault it is low. It is pulled up by external resistor. 15 PGND Low Side driver ground. 16 LGATE Low Side driver output. 17 VDR Low Side driver supply. 18 PHASE Return path of the High Side driver. 19 HGATE High side MOSFETS driver output. 20 BOOT Bootstrap capacitor pin. High Side driver is supplied through this pin. Table 5. Electrical Characteristics (VCC = VDR = 5V; Tamb = 0°C to 85°C unless otherwise specified) Symbol Parameter Test Condition Min. Typ. Max. Unit SUPPLY SECTION Vin Input voltage range Vout=Vref Fsw=110Khz Iout=1A 1.5 35 V VCC, VDR 4.5 5.5 V VCC Turn-onvoltage 4.2 4.4 V Turn-off voltage 4.1 4.3 V Hysteresis 100 mV IqVDR Quiescent Current Drivers VFB > VREF 20 µA IqVcc Device Quiescent current VFB > VREF 400 600 µA SHUTDOWN SECTION SHDN Device On 1.2 V Device Off 0.6 V ISHVDR Drivers shutdown current SHDN to GND 5 µA ISHVCC Devices shutdown current SHDN to GND 10 15 µA SOFT START SECTION ISS Soft Start current VSS = 0.8V 4 6 µA SS Clamp Voltage 4 V Soft start active range 400 450 500 mV Table 4. Pin Function (continued) N° Name Description |
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