X-Powers AXP173 Schematics
Enhanced Single Cell Li-Battery and Power System Management IC
DATASHEET
AXP173
X-Powers
© 2010 X-Powers Limited - All rights reserved
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
目录
0H0H1．概述(Summary)............................................................................................................................................ 21H21H3
1H1H2．特性(Feature)................................................................................................................................................ 22H22H4
2H2H3．典型应用(Typical Application).................................................................................................................23H23H5
3H3H4．极限参数(Absolute Maximum Ratings) ...............................................................................................24H24H6
4H4H5．电气特性(Electrical Characteristics)....................................................................................................... 25H25H6
5H5H6．典型特性(Typical Characteristics)........................................................................................................... 26H26H9
6H6H7．管脚定义(Pin Description)....................................................................................................................... 27H27H13
7H7H8．功能框图(Functional Block Diagram)..................................................................................................28H28H15
8H8H9．控制和操作(Control and Operating) .................................................................................................... 29H29H16
9H9H9.1 两种工作模式(Mode Description) .................................................................................................. 30H30H16
10H10H9.2 开关机和复位(Power On/Off & Reset) .......................................................................................... 31H31H16
11H11H9.3 电源通路管理(IPS)............................................................................................................................... 32H32H18
12H12H9.4 自适应充电器(Adaptive Charger) ................................................................................................... 33H33H20
13H13H9.5 不同工作模式管脚功能区别(Mode Difference)............................................................................. 34H34H23
14H14H9.6 多路电源输出(Multi-Power Outputs)............................................................................................. 35H35H24
15H15H9.7 默认电压/启动时序的设置(Default Voltage/Timing Setting).................................................... 36H36H25
16H16H9.8 信号采集系统(Singal Capture)......................................................................................................... 37H37H26
17H17H9.9 定时器(Timer)...................................................................................................................................... 38H38H26
18H18H9.10 Host接口及中断(Host Interface and IRQ)................................................................................... 39H39H27
19H19H9.11 寄存器(Registers)............................................................................................................................. 40H40H28
20H20H10. 封装(Package)...........................................................................................................................................41H41H44
VQ.QW WPPIQPWE CC Confidential Page 2/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
1．概述(Summary)
AXP173 是高度集成的电源系统管理芯片，针对单芯锂电池(锂离子或锂聚合物)且需要多路电源转换
输出的应用，提供简单易用而又可以灵活配置的完整电源解决方案，充分满足目前日益复杂的应用处理
器系统对于电源相对复杂而精确控制的要求。
AXP173 内部集成了一个自适应 USB-Compatible 的充电器，2 路降压转换器(Buck DC-DC converter)，
4 路线性稳压器(LDO)，电压/电流/温度监视等多路 12-Bit ADC。为保证电源系统安全稳定，AXP173 还
整合了过/欠压(OVP/UVP)、过温(OTP)、过流(OCP)等保护电路。
AXP173 具有外部适配器和 USB 以及电池等三输入能力，其智慧电能平衡(Intelligent Power Select,
IPS™)电路可以在 USB 以及外部交流适配器、锂电池和应用系统负载之间安全透明的分配电能，并且在
只有外部输入电源而没有电池(或者电池过放/损坏)的情况下也可以使应用系统正常工作。
AXP173 提供了一个与主机通讯的两线串行通讯接口:Two Wire Serial Interface (TWSI)，应用处理器可
以通过这个接口去打开或关闭某些电源输出，设置它们的电压，访问内部寄存器和多种测量数据(包括 Fuel
Gauge)。高精度（0.5%）的电量测量数据方便消费者更清楚的实时掌握电能使用状况，给消费者带来前
所未有的设备电能使用体验。当应用系统不需要调整 AXP173 的默认输出时，它也可独立工作而无需应
用处理器的干预。
AXP173 提供 5mm x 5mm 32-pin QFN 封装。
应用产品
z 手持式移动设备
智能移动电话, PMP/MP4, 数
码相机, 数字摄像机, 手持导
航设备 GPS, PDA, 手持数字
广播电视接收机
z 移动互联网设备 MID
z 数码相框，便携 DVD 播放器，
超便携移动电脑 UMPC and
UMPC-like，学习机
z 应用处理器电路系统
Application Processor systems
z 其它电池和多电源应用系统
管脚定义
VQ.QW WPPIQPWE CC Confidential Page 3/45
2．特性(Feature)
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
• 电源管理 (IPS)
o 宽输入电压范围：
2.9V~6.3V (AMR：-0.3V~11V)
o 可配置的高效智慧电能平衡“IPS™”系统
o 自适应 USB 或交流适配器限压限流
(4.4V/500mA/100mA)
o 内部理想二极管的等效内阻小于 100mΩ
• 全集成充电器 (Charger)
o 最大充电电流可达 1.4A
o 支持电池温度监测
o 全面支持 USB 充电，符合规范要求
o 充电精度高，误差小于 0.5%
o 支持 4.1V/4.15V/4.2V/4.36V 等多种电池
o 自动进行充电流程控制
o 可直接驱动 LED 指示充电状态
o 根据系统负载情况自动调节充电电流
• 2 路同步降压转换器 (DC-DC)
o DC-DC1：可在 0.7V~3.5V 之间调节,
25mV/step, 驱动能力 1.2A
o DC-DC2：可在 0.7-2.275V 之间调节,
25mV/step, 驱动能力 1.6A, 支持 VRC
•
4 路线性稳压器 (LDO)
o LDO1：30mA，始终有效
o LDO2：低噪声 LDO，1.8V~3.3V 可调节，
100mV/step, 驱动能力 200mA
o LDO3：低噪声 LDO, 1.8-3.3V 可调节,
100mV/step, 驱动能力 200mA
o LDO4：可在 0.7-3.5V 之间调节,
25mV/step, 驱动能力 0.5A
注：VRC，Voltage Ramp Control，电压斜
率控制。
• 信号采集系统 (Signal Capture)
o 内建多路 12 Bit ADC
o 提供电池和外部输入电源的电流电压数
据
o 内建高精度库仑计及 Fuelgauge 系统
o 提供丰富的电源管理信息，如瞬时耗电
(mA or mW)，剩余电池电量(% or mAh)，
充电状态(%) 和剩余电池使用时间或充
电时间等
o 低电警告及保护
o 提供芯片温度信息
• 应用处理器接口 (Host Interface)
o Host 可以通过 TWSI 接口进行数据交换
o 可以灵活配置的中断管理
o 内置计时器
o 提供四组寄存器，可用于系统关机时的
数据保存
o 支持无需接口控制的独立工作模式
• 系统管理(System Management)
o 可以软复位或硬复位
o 支持软关机或硬关机，支持外部唤醒开
机
o 支持输出电压监测、自诊断功能
o PWROK 用于系统复位
o 外部电源检测(插入/移除/驱动能力不足)
o 所有输出电压都支持软启动
o 过/欠压保护 (OVP/UVP)
o 过流保护 (OCP)
o 过温保护 (OTP)
o 支持 OTG VBUS 电源状态设置与监测
• 高整合度(Fully Integration)
o 内部产生高精度参考电压（0.5%）
o 内置 MOSFET
o 可定制时序和输出电压
VQ.QW WPPIQPWE CC Confidential Page 4/45
Enhanced single Cell Li-Battery and Power System Management IC
3．典型应用(Typical Application)
AXP173
GND
IPSOUT
Adapter
VBUS
IPSOUT
VCCIO
10uF
GND
GND
GND
AGND
IPSOUT
AGND
AGND
GND
10uF
C2
10K 1%
C1
C3
0.22uF
GND
2.2ohm
200K 1%
C8
C9
0 Ohm
Power On/Off
2.2k
2.2k
51k
C4
4.7uF
2.2ohm
C6
4.7uF
470ohm
C6
0.22uF
1uF
1uF
0R
24
TS
21
BAT
22
BAT
25
IPSOUT
26
IPSOUT
20
ACIN
19
VBUS
23
CHGLED
17
VINT
15
BIAS
13
APS
16
VREF
14
PWRON
4
N_VBUSEN
32
IRQ/N_CHGEN
2
SCK
1
SDA/N_HOLDEN
DCDC1
LX1
VIN1
PGND1
DCDC2
LX2
VIN2
PGND2
LDO4
LDOIN
LDO1
LDO2
EXTEN
LDO3
EP
PWROK
31
29
28
30
8
6
5
7
12
11
18
10
27
9
33
3
2.2uH
IPSOUT
4.7uH
IPSOUT
IPSOUT
1 Ohm
GND
4.7uF
C18
1uF
4.7uF
4.7uF
C15
10uF
C19
GND
C20
GND
C22
GND
C11
C12
C17
10uF
C13
C14
C16
10uF
10uF
1nF
10uF
1nF
C21
1uF
DCDC1
GND
GND
DCDC2
GND
GND
LDO4
GND
GND
LDO1
LDO2
EXTEN
LDO3
SDA
SCK
NMI
RESET
HOST
Reset
10k
VCCIO
DRVVBUS
GND
VQ.QW WPPIQPWE CC Confidential Page 5/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
4．极限参数(Absolute Maximum Ratings)
Symbol Description Value Units
ACIN Input Voltage 输入电压 -0.3 to 11 V
VBUS Input Voltage 输入电压 -0.3 to 11 V
TJ Operating Temperature Range 工作温度 -40 to 130 ℃
Ts Storage Temperature Range 储运温度 -40 to 150 ℃
T
Maximum Soldering Temperature (at leads，10sec)
LEAD
锡焊温度
V
Maximum ESD stress voltage，Human Body Model
ESD
抗静电能力
PD Internal Power Dissipation
内部功率消耗耐受
300 ℃
>4000 V
2100 mW
5．电气特性(Electrical Characteristics)
VIN =5V， BAT=3.8V， TA= 25℃
SYMBOL DESCRIPTION CONDITIONS MIN TYP MAX UNITS
ACIN
VIN ACIN Input Voltage 3.8 6.3 V
I
V
OUT
V
ACIN Under Voltage Lockout 3.8 V
UVLO
V
IPS Output Voltage 2.9 5.0 V
OUT
R
Internal Ideal Diode On
ACIN
VBUS
VIN VBUS Input Voltage 3.8 6.3 V
I
V
OUT
V
VBUS Under Voltage Lockout 3.8 V
UVLO
V
IPS Output Voltage 2.9 5.0 V
OUT
R
Internal Ideal Diode On
VBUS
Battery Charger
V
BAT Charge Target Voltage -0.5% 4.2 +0.5% V
TRGT
I
Charge Current Internal 780 1320 mA
CHRG
I
Trickle Charge Current 10% I
TRKL
Current Available Before
OUT
Loading BAT
Resistance
Current Available Before
OUT
Loading BAT
Resistance
500mV Voltage Drop 2000 mA
PIN to PIN, ACIN to
200 mΩ
IPSOUT
500mV Voltage Drop 500 900 mA
PIN to PIN, VBUS to
300 mΩ
IPSOUT
CHRG
VQ.QW WPPIQPWE CC Confidential Page 6/45
Enhanced single Cell Li-Battery and Power System Management IC
V
Trickle Charge Threshold
TRKL
3.0 V
Voltage
ΔV
T
TIMER1
Recharge Battery Threshold
RECHG
Voltage
Charger Safety Timer
Threshold Voltage
Relative to V
TAR G ET
Trickle Mode 40 Min
Termination Ti m e
T
Charger Safety Timer
TIMER2
CC Mode 480 Min
Termination Ti me
I
End of Charge Indication
END
CV Mode 10% 15% I
Current Ratio
NTC
Charge 2.112 VTL Cold Temperature Fault
Threshold Voltage
Discharge
Charge 0.397 VTH Hot Temperature Fault Threshold
Voltage
Discharge
VTE NTC Disable Threshold Voltage Falling Threshold
Hysteresis
Ideal Diode
R
Internal Ideal Diode On
ds(on)
100 mΩ
Resistance(BAT to IPSOUT)
AXP173
mA
-100 mV
CHRG
mA
0
3.264
3.226
0
3.264
0.282
0.2 V
V
V
SYMBOL DESCRIPTION CONDITIONS MIN TYP MAX UNITS
Off Mode Current
I
OFF Mode Current BAT=3.8V 27 μA
BATOFF
I
SUSPEND
USB VBUS suspend Mode
current
BAT=3.8V，
VBUS=5V，
86 μA
N_VBUSEN=1
Logic
VIL Logic Low Input Voltage 0.3 V
VIH Logic High Input Voltage 2 V
TWSI
VCC Input Supply Voltage 3.3 V
ADDRESS TWSI Address 0x68
f
Clock Operating Frequency 400 1200 kHZ
SCK
tf Clock Data Fall Time 2.2Kohm Pull High 60 ns
tr Clock Data Rise Time 2.2Kohm Pull High 100 ns
DCDC
f
Oscillator Frequency Default 1.5 MHz
OSC
DCDC1
I
Input Current PFM Mode 26 μA
VIN1
VQ.QW WPPIQPWE CC Confidential Page 7/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
I
I
PMOS Switch Current Limit PWM Mode 1600 mA
LIM1
I
V
Available Output Current PWM Mode 1200 mA
DC1OUT
Output Voltage Default 0.7 3.3 3.5 V
DC1OUT
DC1OUT
=0
DCDC2
I
Input Current PFM Mode
VIN2
I
I
PMOS Switch Current Limit PWM Mode 2300 mA
LIM2
I
V
Available Output Current PWM Mode 1600 mA
DC2OUT
Output Voltage Range
DC2OUT
DC2OUT
=0
20 μA
0.7 1.25 2.275
V
SYMBOL DESCRIPTION CONDITIONS MIN TYP MAX UNITS
LDO1
V
Output Voltage I
LDO1
LDO1
=1mA
-1%
1.25
1.8
2.5
1%
V
3.3
I
Output Current 30 mA
LDO1
LDO2
V
Output Voltage I
LDO2
I
Output Current 200 mA
LDO2
=1mA -1% 3 1% V
LDO2
IQ Quiescent Current 100 μA
PSRR Power Supply Rejection Ratio I
eN Output Noise,20-80KHz Vo=3V , Io=150mA 28 μV
=60mA，1KHz dB
LDO2
RMS
LDO3
V
Output Voltage I
LDO3
I
Output Current 200 mA
LDO3
=1mA -1% 3.3 1% V
LDO3
IQ Quiescent Current 100 μA
PSRR Power Supply Rejection Ratio I
eN Output Noise,20-80KHz Vo=1.8V , Io=150mA 18 μV
=10mA， 1KHz TBD dB
LDO3
RMS
LDO4
V
Output Voltage I
LDO4
I
Output Current 500 mA
LDO4
=1mA -1% 2.5 1% V
LDO4
IQ Quiescent Current 20 μA
PSRR Power Supply Rejection Ratio I
=10mA，1KHz TBD dB
LDO4
VQ.QW WPPIQPWE CC Confidential Page 8/45
Enhanced single Cell Li-Battery and Power System Management IC
6．典型特性(Typical Characteristics)
DC-DC Efficiency vs. Load(3.8Vin)
AXP173
DC-DC Load Transient
VQ.QW WPPIQPWE CC Confidential Page 9/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
DC-DC Ripple
V
vs Temperature
REF
VQ.QW WPPIQPWE CC Confidential Page 10/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
V
vs Temperature
TRGT
VQ.QW WPPIQPWE CC Confidential Page 11/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
Off Mode Current vs V
BAT
VQ.QW WPPIQPWE CC Confidential Page 12/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
7．管脚定义(Pin Description)
Num Name Type Condition Function Description
1 SDA/
N_HOLDEN
2 SCK I TWSI Clock Signal,pull high to 3.3V IO Power through an
3 PWROK O Power good indication
4 N_VBUSEN I VBUS to IPSOUT Selection
5 VIN2 PI DCDC2 input source
6 LX2 IO Inductor Pin for DCDC2
7 PGND2 G NMOS Ground for DCDC2
8 DCDC2 I DC-DC2 feedback pin
9 LDO3 O Output Pin of LDO3
IO Host Control
Mode
I Stand Alone
Mode
TWSI Data Signal,pull high to 3.3V IO Power through an
2.2K Resistor
N_HOLDEN: GND-Hold enable; High-not hold
2.2K Resistor
GND:IPSOUT select VBUS
High:IPSOUT do not select VBUS
10 LDO2 O Output Pin of LDO2
11 LDOIN PI Input to LDO2 and LDO3
12 LDO4 I Output Pin of LDO4
13 APS PI Internal Power Input
14 PWRON I Power On-Off key input，Internal 100k pull high to APS
15 BIAS IO External 200Kohm 1% resistor
16 VREF O Internal reference voltage
17 VINT PO Internal logic power, 2.5V
18 LDO1 O LDO1 output，for Host RTC block
19 VBUS PI USB VBUS input
20 ACIN PI Adapter input
21,22 BAT IO Main Battery
23 CHGLED O charger status indication
24 TS I Battery Temperature sensor input or an external ADC input
25,26 IPSOUT PO System power source
27 EXTEN O External power module enable
28 VIN1 PI DCDC1 input source
29 LX1 IO Inductor Pin for DCDC1
30 PGND1 G NMOS Ground for DCDC1
31 DCDC1 I DCDC1 feedback pin
32 IRQ/ O Host Control IRQ output
VQ.QW WPPIQPWE CC Confidential Page 13/45
AXP173
Enhanced single Cell Li-Battery and Power System Management IC
N_CHGEN
I Stand Alone
33 EP G Exposed Pad, need to connect to the system ground
Mode
Mode
It is charger enable pin
GND -charger enable; High-charger disable
VQ.QW WPPIQPWE CC Confidential Page 14/45
Loading...