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FAN5240QSCX датащи(PDF) 3 Page - Fairchild Semiconductor |
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FAN5240QSCX датащи(HTML) 3 Page - Fairchild Semiconductor |
3 / 19 page PRODUCT SPECIFICATION FAN5240 REV. 1.1.7 8/29/02 3 Pin Configuration Pin Definitions Pin Number Pin Name Pin Function Description 1 27 LDRV2 LDRV1 Low-Side Drive. The low-side (lower) MOSFET driver output. 2 26 PGND2 PGND1 Power Ground. The return for the low-side MOSFET driver. 3 25 BOOT2 BOOT1 BOOT. The positive supply for the upper MOSFET driver. Connect as shown in Figure 1. 4 24 HDRV2 HDRV1 High-Side Drive. The high-side (upper) MOSFET driver output. 5 23 SW2 SW1 Switching node. The return for the high-side MOSFET driver. 6 22 ISNS2 ISNS1 Current Sense input. Monitors the voltage drop across the lower MOSFET or external sense resistor for current feedback. 7 - 11 VID4 - VID0 Voltage Identification Code. Input to VID DAC. Sets the output voltage according to the codes set as defined in Table 2. These inputs have 1 µA internal pull-up. 12 FPWM Forced PWM mode. When logic high, inhibits the chip from entering hysteretic operating mode. If tied low, hysteretic mode will be allowed. 13 ILIM Current Limit. A resistor from this pin to GND sets the current limit. 14 EN ENABLE. This pin enables IC operation when either left open, or pulled up to VCC. Toggling EN will also reset the chip after a latched fault condition. 15 AGND Analog Ground. This is the signal ground reference for the IC. All voltage levels are measured with respect to this pin. 16 DELAY Power Good / Over-Current Delay. A capacitor to GND on this pin delays the PGOOD from going high as well delaying the over-current shutdown. 18 17 VCORE+ VCORE– VCORE Output Sense. Differential sensing of the output voltage. Used for regulation as well as PGOOD, under-voltage and over-voltage protection and monitoring. A resistor in series with this VCORE+ sets the output voltage droop. 19 PGOOD Power Good Flag. An open-drain output that will pull LOW when the core output below 825mV. PGOOD delays its low to high transition for a time determined by CDELAY when VCORE rises above 875mV. LDRV2 PGND2 BOOT2 HDRV2 SW2 ISNS2 VID4 VID3 VID2 VID1 VID0 FPWM ILIM EN FAN5240 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 VCC LDRV1 PGND1 BOOT1 HDRV1 SW1 ISNS1 VIN SS PGOOD VCORE+ VCORED DELAY AGND QSOP-28 or TSSOP-28 θ JA = 90 °C/W |
Аналогичный номер детали - FAN5240QSCX |
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Аналогичное описание - FAN5240QSCX |
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