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参数资料
| 型号： | DS2710G+T&R |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/12页 |
| 文件大小： | 0K |
| 描述： | IC NIMH CHRGR SGL-CELL 10-TDFN |
| 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： | 镍金属氢化物 |
| 电源电压： | 4 V ~ 5.5 V |
| 工作温度： | -20°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-WFDFN 裸露焊盘 |
| 供应商设备封装： | 10-TDFN-EP（3x4） |
| 包装： | 带卷 (TR) |
Single-Cell NiMH Charger
TOP-OFF complete normally if the cell temperature
remains below this threshold.
Used with a 10k Ω resistor, the Semitec 103AT-2 pro-
vides approximately 0.9% full scale-per-degree sensi-
tivity. Figure 4 shows this linearity curve. The left axis is
the ratio of the sensed voltage to the divider’s input
voltage (V DD ).
Charge-Status Output
The DS2710 indicates the state of charge and the
charge results on the STATUS output pin. When no cell
is present, the output is driven to a logic-low. Any LED
attached to the STATUS pin is off. When a cell is insert-
ed, STATUS oscillates in a 1Hz, 50% duty-cycle pattern
to indicate the cell is precharging. Once the DS2710
transitions to FAST-CHARGE, the STATUS output goes
to logic-high and stays high until the end of TOP-OFF.
STATUS returns to logic-low for MAINTENANCE charge
and remains at logic-low until the cell is removed or the
DS2710 is power cycled. If a FAULT occurs during
charging, STATUS toggles at a fast 4Hz, 50% duty-
cycle rate until the cell is removed. Table 2 summarizes
the STATUS output and LED operation for each charge
condition.
Charge-Rate Selection
The charge rate is determined by an external sense
resistor connected between the VN1 and VN0 pins. The
DS2710 regulates the charge current to maintain a volt-
age drop of V IREF - 0.5 x V HYS-COMP across the sense
resistor during FAST-CHARGE:
V SENSE = V IREF - 0.5 x V HYS-COMP = 0.113V (typ)
The sense resistor can therefore be selected by:
R SENSE = 0.113V/Desired FAST-CHARGE Current
The effective FAST-CHARGE rate is equal to 0.969 times
the regulated current limit, TOP-OFF rate is 0.25 times
the regulated current, and MAINTENANCE charge rate
is 0.0156 times the regulated current. Table 3 shows
the charge rates for charging three different cell capac-
ities using a 565mA (0.200 Ω sense) current source and
a 1130mA (0.100 Ω sense) current source.
Table 2. LED Display Patterns Based on Charge State
CHARGE STATE
NO BATTERY
PRECHARGE
FAST-CHARGE/
TOP-OFF
MAINTENANCE
FAULT
STATUS PIN
STATUS PIN LED
Logic-low
Off
Oscillates at 1Hz,
50% duty cycle
1Hz toggle
Logic-high
On
Logic-low
Off
Oscillates at 4Hz,
50% duty cycle
4Hz toggle
Table 3. Charge-Rate Examples
565mA CHARGE RATE (0.200 )
1130mA CHARGE RATE (0.100 )
STATE
AT CELL CAPACITY
AT CELL CAPACITY
900mAH
1700mAH
2200mAH
900mAH
1700mAH
2200mAH
FAST-CHARGE
PRECHARGE/TOP-OFF
MAINTENANCE
C/1.64
C/6.37
C/102
C/3.10
C/12.0
C/193
C/4.00
C/15.5
C/249
C/0.82
C/3.19
C/51
C/1.55
C/6.0
C/96
C/2.0
C/7.75
C/125
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS2710K | 功能描述:电源管理IC开发工具 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 |
| DS2711 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Loose Cell NiMH Chargers |
| DS2711_11 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Loose-Cell NiMH Chargers Detect and Avoid Charging Alkaline Cells |
| DS2711-DS2712 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Loose Cell NiMH Chargers |
| DS2711E+ | 功能描述:电池管理 Loose Cell NiMH Chargers 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 |
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