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L6376 数据表(PDF) 4 Page - STMicroelectronics |
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L6376 数据表(HTML) 4 Page - STMicroelectronics |
4 / 18 page Pin connections L6376 4/18 2 Pin connections Figure 2. Pin connections (top view) Table 3. Pin description N# Pin name Function 6VS Positive supply voltage. An internal circuit, monitoring the supply voltage, maintains the IC in OFF-state until VS reaches 9 V or when VS falls under 8.5 V. The diagnostic is availlable since VS = 5 V. 7VCP Switch driver supply. To minimize the output drop voltage, a supply of about 10 V higher than VS is required. In order to use the built-in charge pump, connect a filter capacitor from pin1 to pin. The suggested value assures a fast transition and a low supply ripple even in worse condition. Using the four channels contemporarily, values less than 68 nF have to be avoided. 2, 3, 8, 9 O1, O2, O3, O4 High side outputs. Four independently controlled outputs with built-in current limitation. 1, 10, 11, 20 GND Ground and power dissipating pins. These pins are connected to the bulk ground of the IC, so are useful for heat dissipation. 12,13, 14, 15 I1, I2, I3, I4 Control inputs. Four independent control signals. The output is held OFF until the voltage at the corresponding input pin reaches 1.35 V and is turned OFF when the voltage at the pin goes below 1.15 V. 16 ON DELAY Programmable ON duration in short circuit. If an output is short circuited to ground or carryng a current exceeding the limit, the output is turned OFF and the diagnostic activation are delayed. This procedure allows the driving of hard surge current loads. The delay is programmed connecting a capacitor (50 pF to 15 nF) versus ground with the internal time constant of 1.28 µs/pF. The function can be disabled short circuiting this pin to ground. 17 OFF DELAY Programmable OFF duration in short circuit. After the short circuit or overcurrent detection, the switch is held OFF before the next attempt to switch on again. The delay is programmed connecting a capacitor (50 pF to 15 nF) versus ground with the internal time constant of 1.28 µs/pF. Short circuiting this pin to ground the OFF delay is 64 times the ON delay. 18 R Asyncronous reset input. This active low input (with hysteresis), switch off all the outputs independently from the input signal. By default it is biased low. GND O1 I1 O3 VP VS VC VCP O2 O4 GND 10 8 9 7 6 5 4 3 2 13 14 15 16 17 19 18 20 12 1 11 GND D95IN217 I2 I3 ON DELAY I4 OFF DELAY R DIAG GND |
类似零件编号 - L6376_08 |
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类似说明 - L6376_08 |
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