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CS3717AGNF16 Datasheet(PDF) 3 Page - Cherry Semiconductor Corporation |
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CS3717AGNF16 Datasheet(HTML) 3 Page - Cherry Semiconductor Corporation |
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3 / 8 page  3 Package Pin Description PACKAGE PIN # PIN SYMBOL FUNCTION Truth Table IN0 IN1 Output Current H H No Current L H Low Current H L Medium Current L L High Current 16L (Internally Fused Leads) 1 OUT B Output connection with OUTA. The output stage is a ÒHÓ bridge formed by four transistors and four diodes suitable for switching applications. 2 Pulse A parallel RC network connected to this pin sets the OFF time of the lower power transistors. The pulse generator is a monostable triggered by the rising edge of the output of the comparators (tOFF = 0.69 RTCT). 3VDDB Supply voltage input for half output stage. 4, 5, 12, 13 Gnd Ground connection. Also conducts heat from die to printed circuit copper. 6VCC Supply voltage input for logic circuitry. 7 IN1 This pin and IN0 are logic inputs which select the outputs of the three comparators to set the current level. Current also depends on the sensing resistor and reference voltage. See truth table. 8 DIRECTION This TTL-compatible logic input sets the direction of current flow through the load. A high level causes current to flow from OUTA (source) to OUTB (sink). A Schmitt trigger on this input provides good noise immunity and a delay circuit prevents out- put stage short circuits during switching. 9 IN0 See IN1. 10 Comp In Input connected to the three comparators. The voltage across the sense resistor is fed back to this input through the low pass filter RCCC. The lower power transistors are disabled when the sense voltage exceeds the reference voltage of the selected comparator. When this occurs the current decays for a time set by RTCT, tOFF = 0.69 RTCT. 11 VREF A voltage applied to this pin sets the reference voltage of the three comparators, thus determining the output current (also dependent on RSense and the two inputs IN 0 and IN 1). 14 VDDA Supply voltage input for half output stage. 15 OUT A See OUTB. 16 Sense Connection to lower emitters of output stage for insertion of current sense resistor. |
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Descripción similar - CS3717AGNF16 |
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