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ISL62882BHRTZ Datasheet(PDF) 3 Page - Renesas Technology Corp |
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ISL62882BHRTZ Datasheet(HTML) 3 Page - Renesas Technology Corp |
3 / 41 page ISL62882, ISL62882B FN6890 Rev 4.00 Page 3 of 41 June 21, 2011 13 16 RTN Remote voltage sensing return. Connect to ground at microprocessor die. 14, 15 17, 18 ISUM- and ISUM+ Droop current sense input. 16 19 VDD 5V bias power. 17 20 VIN Battery supply voltage, used for feed-forward. 18 22 IMON An analog output. IMON outputs a current proportional to the regulator output current. 19 24 BOOT1 Connect an MLCC capacitor across the BOOT1 and the PHASE1 pins. The boot capacitor is charged through an internal boot diode connected from the VCCP pin to the BOOT1 pin, each time the PHASE1 pin drops below VCCP minus the voltage dropped across the internal boot diode. 20 25 UGATE1 Output of the Phase-1 high-side MOSFET gate driver. Connect the UGATE1 pin to the gate of the Phase-1 high-side MOSFET. 21 26 PHASE1 Current return path for the Phase-1 high-side MOSFET gate driver. Connect the PHASE1 pin to the node consisting of the high-side MOSFET source, the low-side MOSFET drain, and the output inductor of Phase-1. 22 27 VSSP1 Current return path for the Phase-1 low-side MOSFET gate driver. Connect the VSSP1 pin to the source of the Phase-1 low-side MOSFET through a low impedance path, preferably in parallel with the traces connecting the LGATE1a and the LGATE1b pins to the gates of the Phase-1 low-side MOSFETs. 23 28 LGATE1a Output of the Phase-1 low-side MOSFET gate driver that is always active. Connect the LGATE1a pin to the gate of the Phase-1 low-side MOSFET that is active all the time. 24 29 LGATE1b Another output of the Phase-1 low-side MOSFET gate driver. This gate driver will be pulled low when the DPRSLPVR pin logic is high. Connect the LGATE1b pin to the gate of the Phase-1 low-side MOSFET that is idle in deeper sleep mode. - - LGATE1 Output of the Phase-1 low-side MOSFET gate driver. Connect the LGATE1 pin to the gate of the Phase-1 low-side MOSFET. 25 30 VCCP Input voltage bias for the internal gate drivers. Connect +5V to the VCCP pin. Decouple with at least 1µF of an MLCC capacitor to VSSP1 and VSSP2 pins respectively. 26 32 LGATE2 Output of the Phase-2 low-side MOSFET gate driver. Connect the LGATE2 pin to the gate of the Phase-2 low-side MOSFET. 27 33 VSSP2 Current return path for the Phase-2 converter low-side MOSFET gate driver. Connect the VSSP2 pin to the source of the Phase-2 low-side MOSFET through a low impedance path, preferably in parallel with the trace connecting the LGATE2 pin to the gate of the Phase-2 low-side MOSFET. 28 34 PHASE2 Current return path for the Phase-2 high-side MOSFET gate driver. Connect the PHASE2 pin to the node consisting of the high-side MOSFET source, the low-side MOSFET drain, and the output inductor of Phase-2. 29 35 UGATE2 Output of the Phase-2 high-side MOSFET gate driver. Connect the UGATE2 pin to the gate of the Phase-2 high-side MOSFET. 30 36 BOOT2 Connect an MLCC capacitor across the BOOT2 and the PHASE2 pins. The boot capacitor is charged through an internal boot diode connected from the VCCP pin to the BOOT2 pin, each time the PHASE2 pin drops below VCCP minus the voltage dropped across the internal boot diode. 31 thru 37 38 thru 44 VID0 thru VID6 VID input with VID0 = LSB and VID6 = MSB. 38 45 VR_ON Voltage regulator enable input. A high level logic signal on this pin enables the regulator. 39 46 DPRSLPVR Deeper sleep enable signal. A high level logic signal on this pin indicates that the microprocessor is in deeper sleep mode. 40 47 CLK_EN# Open drain output to enable system PLL clock. It goes low 13 switching cycles after Vcore is within 10% of Vboot. -48 NC No connect. pad pad BOTTOM The bottom pad of ISL62882B is electrically connected to the GND pin inside the IC. Functional Pin Descriptions (Continued) ISL62882 ISL62882B SYMBOL DESCRIPTION |
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