SC2721G Device Specification
V.0.3 Spreadtrum Communications, Inc., Confidential and Proprietary 4 of 680
This document contains information on a product under development.
Spreadtrum reserves the right to change or discontinue this product without notice.
REVISION HISTORY .............................................................................................................................. 3
1 SYSTEM OVERVIEW ................................................................................................................. 11
1.1 General Description .......................................................................................................... 11
1.2 SC2721G Features ........................................................................................................... 12
1.2.1 Highlighted Features ................................................................................... 12
1.2.2 Summary of SC2721G features .................................................................. 13
2 PACKAGE INFORMATION ....................................................................................................... 15
2.1 Top Marking Definition ...................................................................................................... 15
2.2 FCBGA Pinout ................................................................................................................... 16
2.3 Package Outline ................................................................................................................ 17
2.4 JEDEC Recommended Reflow Profile .............................................................................. 19
3 PIN INFORMATION ................................................................................................................... 21
3.1 Pin List ............................................................................................................................... 21
3.2 Control Registers............................................................................................................... 25
3.2.1 Memory map ................................................................................................ 25
3.2.2 Register Description .................................................................................... 25
4 ELECTRICAL SPECIFICATIONS .............................................................................................. 28
4.1 DC Specifications .............................................................................................................. 28
4.1.1 Absolute Maximum Ratings ......................................................................... 28
4.1.2 Recommended Operating Conditions ......................................................... 29
4.1.3 Thermal Characteristics .............................................................................. 29
4.1.4 ESD Characteristics .................................................................................... 29
4.1.5 DC Characteristics ...................................................................................... 30
4.2 AC Characteristics............................................................................................................. 31
5 POWER MANAGEMENT ........................................................................................................... 34
5.1 Overview ........................................................................................................................... 34
5.2 DCDC Converters ............................................................................................................. 35
5.3 Low Drop-Out Linear Regulators (LDOs) .......................................................................... 43
5.4 Charger ............................................................................................................................. 63
5.4.1 Features ...................................................................................................... 63
5.4.2 Function block and application diagram ...................................................... 64
5.4.3 Electrical specifications ............................................................................... 65
5.4.4 Application Notes ........................................................................................ 67
5.5 Coulomb Counter Fuel Gauge .......................................................................................... 70
5.6 Battery Presence Detection (BPD) .................................................................................... 71
5.7 IB160U_AUXADC CURRENT ........................................................................................... 72
5.8 RGB LED Driver ................................................................................................................ 72
5.9 Keypad LED Driver............................................................................................................ 74
5.10 Flash LED Driver ............................................................................................................... 75
5.11 Under Voltage Lock Out (UVLO)....................................................................................... 76
5.12 Temperature Sensor and Over-Temperature-Protection .................................................. 78
5.13 Auxiliary Analog-to-Digital Converter (ADC) ..................................................................... 78
5.14 Band-Gap .......................................................................................................................... 80
5.15 RTC Oscillator ................................................................................................................... 80
5.16 RTC Reset ......................................................................................................................... 81
5.17 Power-On Control.............................................................................................................. 81
