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参数资料
| 型号： | MAX8845ZEVKIT+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/19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 |
28V Linear Li+ Battery Chargers with Battery
Detection and Overvoltage Protected Output
LINEAR
REGULATOR
SAFEOUT
WITH OVP
4.2V Li+
(4.35V FOR
IN
SETI
V REF
I MINREF
OUTPUT DRIVER,
CURRENT SENSE,
AND LOGIC
V REF
+115 ° C
TEMPERATURE
SENSOR
BATT
DETBAT
V I/O
MAX8845W ONLY)
MIN
IN
CHG
V IN
OVLO
BATT
VL
REGULATOR
POK
V L
POK
BATT
DETBAT
MAX8845Z
MAX8845Y
VL
UVLO
REF
REFOK
V REF
LOGIC
200k ?
ABO (MAX8845Z ONLY)
ABI
ABO (MAX8845Y/MAX8845X/MAX8845W)
EN
MAX8845X
MAX8845W
GND
EP
200k ?
Figure 1. MAX8845Z/MAX8845Y/MAX8845X/MAX8845W Functional Diagram
Detailed Description
The MAX8845Z/MAX8845Y/MAX8845X/MAX8845W
chargers use voltage, current, and thermal-control
loops to charge a single Li+ cell and protect the battery
(Figure 1). When a Li+ battery with a cell voltage below
2.5V is inserted, the MAX8845Z/MAX8845Y/MAX8845X/
MAX8845W chargers enter a prequalification stage
where it precharges that cell with 10% of the user-pro-
grammed fast-charge current (Figure 2). The CHG indi-
cator is driven low to indicate entry into the prequalifi-
cation state. When the battery voltage exceeds 2.5V,
the charger soft-starts as it enters the fast-charge
stage. The fast-charge current level is programmed
through a resistor from SETI to GND. As the battery
voltage approaches 4.2V, the charging current is
reduced. If the battery current drops to less than the
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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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