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CS5157HGDR16G 数据表(PDF) 5 Page - ON Semiconductor |
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CS5157HGDR16G 数据表(HTML) 5 Page - ON Semiconductor |
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5 / 16 page  CS5157H http://onsemi.com 5 ELECTRICAL CHARACTERISTICS (0 °C < TA < +70°C; 0°C < TJ < +125°C; 8.0 V < VCC1 < 14 V; 5.0 V < VCC2 < 20 V;DAC Code: VID4 = VID2 = VID1 = VID0 = 1; VID3 = 0; CVGATE(L) and CVGATE(H) = 1.0 nF; COFF = 330 pF; CSS = 0.1 mF, unless otherwise specified.) Characteristic Unit Max Typ Min Test Conditions Supply Current ICC1 No Switching − 8.5 13.5 mA ICC2 No Switching − 1.6 3.0 mA Operating ICC1 VFB = COMP = VFFB − 8.0 13 mA Operating ICC2 VFB = COMP = VFFB − 2.0 5.0 mA COFF Normal Charge Time VFFB = 1.5 V; VSS = 5.0 V 1.0 1.6 2.2 ms Extension Charge Time VSS = VFFB = 0 5.0 8.0 11.0 ms Discharge Current COFF to 5.0 V; VFB > 1.0 V 5.0 − − mA Time Out Timer Time Out Time VFB = VCOMP; VFFB = 2.0 V; Record VGATE(H) Pulse High Duration 10 30 65 ms Fault Mode Duty Cycle VFFB = 0V 35 50 70 % PACKAGE PIN DESCRIPTION PACKAGE PIN # PIN SYMBOL FUNCTION SOIC−16 1, 2, 3, 4, 6 VID0−VID4 Voltage ID DAC input pins. These pins are internally pulled up to 5.0 V providing logic ones if left open. VID4 selects the DAC range. When VID4 is High (logic one), the DAC range is 2.10 V to 3.50 V with 100 mV increments. When VID4 is Low (logic zero), the DAC range is 1.30 V to 2.05 V with 50 mV increments. VID0 − VID4 select the desired DAC output voltage. Leaving all 5 DAC input pins open results in a DAC output voltage of 1.2440 V, allowing for adjustable output voltage, using a traditional resistor divider. 5 SS Soft−Start Pin. A capacitor from this pin to LGND in conjunction with internal 60 mA current source provides Soft−Start function for the controller. This pin disables fault detect function during Soft−Start. When a fault is detected, the Soft−Start capacitor is slowly discharged by internal 2.0 mA current source setting the time out before trying to restart the IC. Charge/discharge current ratio of 30 sets the duty cycle for the IC when the regulator output is shorted. 7 COFF A capacitor from this pin to ground sets the time duration for the on board one shot, which is used for the constant off time architecture. 8 VFFB Fast feedback connection to the PWM comparator. This pin is connected to the regulator output. The inner feedback loop terminates on time. 9 VCC2 Boosted power for the high side gate driver. 10 VGATE(H) High FET driver pin capable of 1.5 A peak switching current. Internal circuit prevents VGATE(H) and VGATE(L) from being in high state simultaneously. 11 PGND High current ground for the IC. The MOSFET driver is referenced to this pin. Input capacitor ground and the source of lower FET should be tied to this pin. 12 VGATE(L) Low FET driver pin capable of 1.5 A peak switching current. 13 VCC1 Input power for the IC and low side gate driver. 14 LGND Signal ground for the IC. All control circuits are referenced to this pin. 15 COMP Error amplifier compensation pin. A capacitor to ground should be provided externally to compensate the amplifier. 16 VFB Error amplifier DC feedback input. This is the master voltage feedback which sets the output voltage. This pin can be connected directly to the output or a remote sense trace. |
类似零件编号 - CS5157HGDR16G |
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类似说明 - CS5157HGDR16G |
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