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поискавой системы для электроныых деталей |
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поискавой системы для электроныых деталей |
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RT5002 датащи(PDF) 28 Page - Richtek Technology Corporation |
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RT5002 датащи(HTML) 28 Page - Richtek Technology Corporation |
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28 / 40 page  RT5002 28 DS5002-00 November 2011 www.richtek.com Charger State Bit EOC Bit PGOOD Bit SAFE Charging 0 1 0 Charging Suspended by Thermal Loop 0 1 0 Safety Timers Expired 0 1 1 Charging Done 1 1 0 Recharging after Termination 1 1 0 IC Disabled or no Valid Input Power 0 0 0 Charge State Wake-Up Detector Wake-Up Detector detects VINor BAT plug-in events. Once one of them plug-in, WAKE pin asserts one 55ms-width high pulse. The timing diagram is shown below. WAKE Timing Diagram Battery Installation Detection RT5002 also detect TS voltage to judge the battery installation status. If PMU is enabled but TS voltage > 90% of VP node voltage, RT5002 would set the bit NoBAT = 1 in I 2C register bank 0x2. End_Of_Charge (EOC) Status The bit EOC in I 2C register bank 0x2 can show the EOC status. If EOC = 1, the Charger is in EOC State. Suspend Mode Set USUS = 1, and the charge will enter Suspend Mode. In Suspend Mode, IUSUS (MAX) < 300 µA. Battery Sense When PMU is turned on, BATS = 59.8% x BAT, The RT5002 detects the battery level from BATS voltage level. Interrupt Indicator The RT5002 provides the interrupt indicator output pin (INT). INT is an open drain pin. When the status bits (PGOOD, TS_FAULT, EOC, SAFE) of I 2C register address 0x2 toggle, the INT is set to be low. After Reg 0x2 is read or PMU turn off, INT goes high. 4 ±0.4ms BATS VOUT2 VIN WAKE BAT 55ms 55ms 3.3V 2.7V |
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