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GRM188R71H472KA01 Datasheet(PDF) 11 Page - Panasonic Semiconductor |
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GRM188R71H472KA01 Datasheet(HTML) 11 Page - Panasonic Semiconductor |
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11 / 36 page  NN31001A Page 11 of 33 Product Standards Pin No. Pin name Type Description 35 FSEL Input Frequency select pin This is set to 400 kHz at Low level input, 800 kHz at High level input, and 600 kHz at open. 36 MODE Input Skip (discontinuous) mode / FCCM (Forced Continuous Conduction Mode) select pin Skip mode is set at Low level input, FCCM is set at High level input. 37 PRTCNT Input Protection Control Set pin for Latch mode / Auto recovery mode during OVD / SCP operations 38 VREG Output LDO output pin This is Output pin of Power supply (LDO) for internal control circuit. 40 OCPCNT Input Programmable over-current protection. Connected resistor on this pin will adjust the over-current protection threshold. 41 PGOOD Output Power good open drain pin A pull up resistor between PGOOD and VREG terminal is necessary. Output is low during Over or Under Voltage Detection conditions. 42 SS Output Soft start capacitor connect pin The output voltage at a start up is smoothly controlled by adjusting Soft Start time. Please connect capacitor between SS and GND. 43 VFB Input Comparator negative input pin / 1.0 V, 3.3 V output voltage select pin VFB terminal voltage is regulated to REF output (internal reference voltage). Since VFB is a high impedance terminal, it should not be routed near other noisy path (LX, BST, etc.) Routing path should be kept as short as possible. 44 46 VOUTM Input Output voltage sense pin Switching frequency is controlled by monitoring output voltage. This pin is also used as Feedback pin during internal feedback function. 58 VOUT Output Voltage output pin for heat radiation 59 PGND Ground Ground pin of Power MOSFET for heat radiation 60 PVIN Power supply Power supply pin for heat radiation 61 LX Output Power MOSFET output pin for heat radiation 62 AGND Ground Ground pin for heat radiation Note : Detailed pin descriptions are provided in the OPERATION and APPLICATION INFORMATION section. PIN FUNCTIONS (Continued) Doc No. TA4-EA-06262 Revision. 2 Established : 2014-07-03 Revised : 2014-07-08 |
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