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NCV78763 Datasheet(PDF) 7 Page - ON Semiconductor |
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NCV78763 Datasheet(HTML) 7 Page - ON Semiconductor |
7 / 48 page NCV78763 www.onsemi.com 7 Table 4. THERMAL RESISTANCE Characteristic Package Symbol Value Unit Thermal resistance package to Exposed Pad (Note 14) SSOP36−EP qJcbot 3.5 °C/W Thermal resistance package to Exposed Pad (Note 14) QFN32 7x7 qJcbot 3.4 °C/W Thermal resistance package to Exposed Pad (Note 14) QFN32 5x5 qJcbot 3.4 °C/W 14. Includes also typical solder thickness under the Exposed Pad (EP). ELECTRICAL CHARACTERISTICS NOTE: Unless differently specified, all device Min and Max parameters boundaries are given for the full supply operating ranges and junction temperature (TJP) range (−40°C; +150°C). Table 5. VBB: BATTERY SUPPLY INPUT Characteristic Symbol Conditions Min Typ Max Unit Nominal Operating Supply Range VBB 5 40 V Device Current Consumption IBB_0 buck regulators off, gate drive off, outputs unloaded 8 mA Table 6. VDRIVE: SUPPLY FOR BOOSTER MOSFET GATE DRIVE CIRCUIT Characteristic Symbol Conditions Min Typ Max Unit VDRIVE reg. voltage from VBB (Note 15) VDRV_BB_15 VBB − VDRIVE > 1.65 V @IDRIVE = 25 mA VDRIVE_ SETPOINT[3:0] = 1111 9.7 10.1 10.7 V VDRV_BB_00 VBB − VDRIVE > 1.65 V @IDRIVE = 25 mA VDRIVE_ SETPOINT[3:0] = 0000 4.8 5 5.3 V VDRIVE from VBB increase per code (Note 15) DVDRV_BB Linear increase, 4Bits 0.34 V VDRIVE reg. voltage from VBOOST (Note 15) VDRV_BST_15 VBOOST − VDRIVE > 3 V @IDRIVE = 40 mA VDRIVE_SETPOINT[3:0] = 1111 9.5 10.1 10.7 V VDRV_BST_00 VBOOST − VDRIVE > 3 V @IDRIVE = 40 mA VDRIVE_SETPOINT[3:0] = 0000 4.7 5 5.3 V VDRIVE from VBOOST increase per code (Note 15) DVDRV_BST Linear increase, 4 Bits 0.34 V VDRIVE Output current limitation from VBB input VDRV_BB_IL 40 400 mA VDRIVE Output current limitation from VBOOST input VDRV_BB_IL 40 200 mA VDRIVE decoupling capacitor CVDRIVE 470 nF VDRIVE decoupling capacitor ESR CVDRIVE_ESR 100 m W 15. The VDRIVE voltage setpoint is in the same range if the current is either provided by VBB or VBOOST pin. The voltage headroom between VBB and VDRIVE or VDRIVE and VBOOST needs to be sufficient. For what concerns VDRIVE from VBB, in case of 25 mA current, the worst case headroom is 1.65V. The VBOOST_AUX regulator can be enabled by SPI (bit VDRIVE_BST_EN[0]). |
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