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CS5157 数据表(PDF) 5 Page - Cherry Semiconductor Corporation |
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CS5157 数据表(HTML) 5 Page - Cherry Semiconductor Corporation |
5 / 14 page 5 Block Diagram Q VID1 VCC1 SS COMP VFB VID0 LGnd VFFB VCC2 VGATE(H) PGnd VGATE(L) VID2 VID3 - + 5 BIT DAC COFF Slow Feedback Maximum On-Time Timeout VCC1 R Q S COFF One Shot PWM COMP SS High Comparator FAULT Latch 2.5V Error Amplifier Fast Feedback - + VCC1 Monitor Comparator VID4 - + - + - + - + VFFB Low Comparator PWM Comparator SS Low Comparator R Q S Q R Q S 2µA 5V 60µA Normal Off-Time Timeout Extended Off-Time Timeout Time Out Timer (30µs) Edge Triggered Off-Time Timeout 3.90V 3.85V FAULT FAULT GATE(H) = ON GATE(H) = OFF PGnd PWM Latch 1V 0.7V Package Pin Description: continued PACKAGE PIN # PIN SYMBOL FUNCTION 16L SO Narrow 11 PGnd High current ground for the IC. The MOSFET drivers are 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 1.5A 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 - CS5157 |
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类似说明 - CS5157 |
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