Texas Instruments bq2512 Series, Руководство пользователя

Страница: 2 / 24

Introduction
www.ti.com
2 SLUUBC8A – August 2015 – Revised May 2016
Submit Documentation Feedback
Copyright © 2015–2016, Texas Instruments Incorporated
bq2512x Evaluation Module
10 Signal Layer 1
..............................................................................................................
14
11 Signal Layer 2
..............................................................................................................
15
12 Bottom Layer
................................................................................................................
15
13 Bottom Solder Mask
.......................................................................................................
16
14 Bottom Overlay
.............................................................................................................
16
15 Drill Drawing
................................................................................................................
17
16 Board Dimensions
..........................................................................................................
17
17 PWR812 Composite Layout
..............................................................................................
18
List of Tables
1 Description of the IO Connectors on PCB
................................................................................
4
2 Test Points Description
.....................................................................................................
5
3 Default Settings
..............................................................................................................
5
4 Initial Jumper Position
.......................................................................................................
5
5 Recommended Operating Conditions
.....................................................................................
6
6 bq2512xEVM Bill of Materials
............................................................................................
11
1 Introduction
1.1 bq2512x IC Features
The bq2512x is a highly-integrated battery charge management IC that integrates the most common
functions for wearable devices: linear charger, regulated output, load switch, manual reset with timer, and
battery voltage monitor. The low quiescent current during operation and shutdown enables maximum
battery life. The device supports charge currents from 5 mA to 300 mA. The input current limit, charge
current, PWM output voltage, LDO output voltage, and other parameters are programmable through the
I
2
C interface. The battery is charged using a standard Li-Ion charge profile with three phases: precharge,
constant current, and constant voltage.
1.2 bq2512x EVM Features
The bq2512x EVM is a complete battery power management module for evaluating compact, highly-
integrated, flexible, high efficiency, linear charging solution for single cell, Li-Ion and Li-Polymer battery-
powered systems used in wearables and low-power portable applications. Key EVM features include:
• Configurable 300-mA buck regulator (1.8-V default)
• 700-nA typical I
Q
with PWM enabled
• 0.5% accurate battery voltage regulation (configurable from 3.6 V to 4.65 V in 10-mV steps)
• Configurable termination current down to 500 µA
• 2.5 mm × 2.5 mm WCSP package and 6 external components for minimum solution
• Power path management for powering the system and charging the battery
• Power path management enables < 150 nA ship mode battery quiescent current for longest shelf life
• Push-button wake-up and reset with adjustable timers
• Battery charger operates from 3.4 V – 5.5 V V
IN
(5.5-V OVP / 20-V tolerant)
• I
2
C control of key parameters