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参数资料
| 型号： | MAX8671XETL+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 24/44页 |
| 文件大小： | 0K |
| 描述： | IC PMIC W/CHARGER 40-TQFN-EP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 功能： | 充电管理 |
| 电池化学： | 锂离子（Li-Ion）、锂聚合物（Li-Pol） |
| 电源电压： | 4.1 V ~ 6.6 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 40-WFQFN 裸露焊盘 |
| 供应商设备封装： | 40-TQFN-EP（5x5） |
| 包装： | 带卷 (TR) |
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PMIC with Integrated Charger and
Smart Power Selector for Handheld Devices
Detailed Description
The MAX8671X highly integrated PMIC is ideally suited
for use in portable audio player and handheld applica-
tions. As shown in Figure 2, the MAX8671X integrates
USB power input, AC-to-DC adapter power input (DC),
Li+/Li-Poly battery charger, three step-down regulators,
two linear regulators, and various monitoring and status
outputs. The MAX8671X offers adjustable output volt-
ages for all outputs.
Smart Power Selector
The MAX8671X Smart Power Selector seamlessly dis-
tributes power between the two current-limited external
inputs (USB and DC), the battery (BAT), and the sys-
tem load (SYS). The basic functions performed are:
? With both an external power supply (USB or DC)
and battery (BAT) connected:
When the system load requirements are less than
the input current limit, the battery is charged with
residual power from the input.
Table 1. Input Limiter Control Logic
When the system load requirements exceed the
input current limit, the battery supplies supple-
mental current to the load through the internal sys-
tem load switch.
? When the battery is connected and there is no exter-
nal power input, the system (SYS) is powered from
the battery.
? When an external power input is connected and
there is no battery, the system (SYS) is powered
from the external power input.
The dual-input Smart Power Selector supports end
products with dual and single external power inputs.
For end products with dual external power inputs, con-
nect these inputs directly to the DC and USB nodes of
the MAX8671X. For end products with a single input,
connect the single input to the DC node and connect
USB to ground or leave it unconnected. In addition to
AC-to-DC adapters current limits, the DC input also
supports USB current limit to allow for end products
DC INPUT
USB INPUT
MAXIMUM
POWER SOURCE
DOK
UOK
PEN1
PEN2
USUS
CURRENT
CURRENT
CHARGE
LIMIT
LIMIT
CURRENT*
AC-to-DC Adapter at
DC Input
L
X
H
X
X
I DCLIM
Lower of I CHGMAX
and
I DCLIM
L
X
L
L
L
100mA
USB input off,
DC input has
priority
Lower of I CHGMAX
and
100mA
USB Power at DC Input
Lower of I CHGMAX
L
X
L
H
L
500mA
and
500mA
L
X
L
X
H
Suspend
0
Lower of I CHGMAX
H
L
X
L
L
100mA
and
100mA
USB Power at USB
Input, DC Unconnected
H
L
X
H
L
No DC input
500mA
Lower of I CHGMAX
and
500mA
H
L
X
X
H
Suspend
0
DC and USB
Unconnected
H
H
X
X
X
No USB input
0
*Charge current cannot exceed the input current limit. Charge can be less than the maximum charge current if the total SYS load
exceeds the input current limit.
X = Don’t care.
24
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8672ETD+T | 功能描述:电池管理 Backup Management IC for NiMH Batteries RoHS:否 制造商:Texas Instruments 电池类型:Li-Ion 输出电压:5 V 输出电流:4.5 A 工作电源电压:3.9 V to 17 V 最大工作温度:+ 85 C 最小工作温度:- 40 C 封装 / 箱体:VQFN-24 封装:Reel |
| MAX8672EVKIT+ | 制造商:Maxim Integrated Products 功能描述:MAX8672 EVAL KIT - Rail/Tube |
| MAX8674EVKIT+ | 制造商:Maxim Integrated Products 功能描述:STANDARD PRODUCTS - Boxed Product (Development Kits) |
| MAX8676ELB+ | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| MAX8676EWJ+T | 制造商:Maxim from Components Direct 功能描述:THE MAXIM MAX8676EWJ+T IS A USB HOT SWAP CONTROLLER. - Tape and Reel 制造商:Maxim 功能描述:The Maxim MAX8676EWJ+T is a USB Hot Swap Controller. |
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