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| 型号： | MAX8845ZEVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | EVALUATION KIT FOR MAX8845Z |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 电源管理，电池充电器 |
| 嵌入式： | 否 |
| 已用 IC / 零件： | MAX8845 |
| 主要属性： | 1 芯锂离子电池，4.25 V 至 7.5 V 输入 |
| 次要属性： | 状态 LED |
| 已供物品： | 板 |
ATION
EVALU
AVAIL
19-4340; Rev 1; 9/09
KIT
ABLE
28V Linear Li+ Battery Chargers with Battery
Detection and Overvoltage Protected Output
General Description
The MAX8845Z/MAX8845Y/MAX8845X/MAX8845W are
intelligent, stand-alone constant-current, constant-volt-
age (CCCV), thermally regulated linear chargers
designed for charging a single-cell lithium-ion (Li+) bat-
tery. The MAX8845Z/MAX8845Y/MAX8845X/MAX8845W
integrate a current-sense circuit, MOSFET pass element,
thermal-regulation circuitry, and eliminate the external
reverse-blocking Schottky diode to create the simplest
and smallest charging solutions for handheld equipment.
The ICs control the charging sequence from the pre-
qualification state through constant current fast-charge,
top-off charge, and full-charge indication. Proprietary
thermal-regulation circuitry limits the die temperature
during fast-charging or when the ICs are exposed to
high ambient temperatures, allowing maximum charg-
ing current without damaging the ICs.
The MAX8845Z/MAX8845Y/MAX8845X/MAX8845W
achieve high flexibility by providing adjustable fast-
charge currents (SETI) and an adjustable top-off cur-
rent threshold (MIN) through external resistors. The
MAX8845Z/MAX8845Y/MAX8845X/MAX8845W feature
a booting assistant circuit that distinguishes input
sources and battery connection and provides an
enable signal (ABO —MAX8845Z and ABO —
MAX8845Y/MAX8845X/MAX8845W) for system booting.
The MAX8845Z/MAX8845Y/MAX8845X/MAX8845W also
integrate an overvoltage-protected output (SAFEOUT) for
low voltage-rated USB or charger inputs in system, and a
battery-pack detection circuit (DETBAT) that disables the
charger when the battery pack is absent. Other features
include an active-low control input ( EN ), an active-low
Features
o CCCV, Thermally Regulated Linear 1-Cell Li+
Battery Charger
o No External MOSFET, Reverse Blocking Diode, or
Current-Sense Resistor
o Programmable Fast-Charge Currents (1A RMS max)
o Programmable Top-Off Current Threshold (MIN)
o Input Overvoltage Protected 4.7V Output
(MAX8845Z/MAX8845Y/MAX8845W) or 4.85V
(MAX8845X) (SAFEOUT)
o Proprietary Die Temperature Regulation Control
(+115°C)
o 4.25V (4.4V for MAX8845W only) to 28V Input
Voltage Range with Input Overvoltage Protection
Above +7.5V (+8.0V for MAX8845X only)
o Low-Dropout Voltage (300mV at 500mA)
o Input Power-Source Detection Output ( POK ),
Charge Status Output ( CHG ), Charge-Enable Input
( EN )
o Output for Autobooting (ABO—MAX8845Z,
ABO —MAX8845Y/MAX8845X/MAX8845W)
o Tiny, 3mm x 3mm 12-Pin Thin QFN Package,
0.8mm Height (max)
Ordering Information
input power source detection output ( POK ), and a fully
charged top-off threshold detection output ( CHG ).
The MAX8845Z/MAX8845Y/MAX8845X/MAX8845W
accept an input supply range from 4.25V (4.4V for
MAX8845W only) to 28V, but disable charging if the
supply voltage exceeds +7.5V (+8.0V for MAX8845X
only) to protect against unqualified or faulty AC
adapters. The ICs operate over the extended tempera-
ture range (-40°C to +85°C) and are available in a com-
PART
MAX8845Z ETC+
MAX8845Y ETC+
MAX8845X ETC+
MAX8845W ETC+
PIN-PACKAGE
12 Thin QFN-EP*
12 Thin QFN-EP*
12 Thin QFN-EP*
12 Thin QFN-EP*
TOP
MARK
ABL
ABM
ABQ
ABR
ABO
ACTIVE
STATE
Active high
Active low
Active low
Active low
pact 12-pin, thermally enhanced thin QFN, 3mm x 3mm
package (0.8mm max height).
Applications
Cellular and Cordless Phones
Smart Phones and PDAs
Digital Still Cameras
MP3 Players
USB Appliances
Charging Cradles and Docks
Bluetooth ? Equipment
Note: All devices are specified over the -40°C to +85°C oper-
ating temperature range.
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
Typical Operating Circuit and Pin Configurations appear at
end of data sheet.
Bluetooth is a registered trademark of Bluetooth SIG.
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX8845ZEVKIT+ | 功能描述:电源管理IC开发工具 MAX8845Y/Z Eval Kit RoHS:否 制造商:Maxim Integrated 产品:Evaluation Kits 类型:Battery Management 工具用于评估:MAX17710GB 输入电压: 输出电压:1.8 V |
| MAX8847ZETE+ | 制造商:Maxim Integrated Products 功能描述:NEGATIVE CHARGE PUMP FOR 6 WLEDS - Rail/Tube |
| MAX8848YETE+ | 制造商:Maxim Integrated Products 功能描述:NEGATIVE CHARGE PUMP FOR 7 WLEDS - Rail/Tube |
| MAX8848YETE+T | 制造商:Maxim Integrated Products 功能描述:NEGATIVE CHARGE PUMP FOR 7 WLEDS - Tape and Reel |
| MAX8848ZETE+ | 制造商:Maxim Integrated Products 功能描述:NEGATIVE CHARGE PUMP FOR 7 WLEDS - Rail/Tube |
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