Texas Instruments

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Sep 16, 2014 1 . D. C. B. A. Title. Number. Revision. Size. A2. Date: 16-Sep-2014 . T- 220NR91240K- 1 % R92150K- 1 % R93150K- 1 %. R94 U89 HT7550 . 1. AN2344. Power Management - Battery Charger with Cell-Balancing and Fuel . Figure 1 shows the battery pack management system .. U3 HT7550 - 1 . R38. 1 . LDO Data Sheets. 2. Calculating LDO Dropout. Application Report. SLVA207 May 2005. Understanding LDO Dropout. Michael Day. 1 . 0603. Yageo. SMD,Capacitor, 20%. 10uF. C55 C56 C57. 3. 0805. Yageo. SMD SMD,LDO. 78L05. U88. 1 . SOT-89. Texas Instruments. SMD,LDO. HT7550 . 1 . Accuracy The RTC must be very accurate. In most specifications, the error rate under . temperature parabola curve Equation 1 , in PPM. 3. U89 HT7550 .