參數(shù)資料
型號: MAX713
廠商: Maxim Integrated Products, Inc.
英文描述: NiCd NiMH Battery Fast-Charge Controllers(Charges 1-16 Series Cells at Rates Up to 4C )(NiCd NiMH 電池快速充電控制器(可沖1-16節(jié)電池單元,效率可達4C))
中文描述: NiCd/NiMH電池快速充電控制器
文件頁數(shù): 15/17頁
文件大?。?/td> 761K
代理商: MAX713
M
NiCd/NiMH Battery
Fast-Charge Controllers
______________________________________________________________________________________
15
Linear-Mode, High Series Cell Count
The absolute maximum voltage rating for the BATT+ pin
is higher when the MAX712/MAX713 are powered on. If
more than 11 cells are used in the battery, the BATT+
input voltage must be limited by external circuitry when
DC IN is not applied (Figure 15).
Efficiency During Discharge
The current-sense resistor, R
SENSE
, causes a small
efficiency loss during battery use. The efficiency loss is
significant only if R
SENSE
is much greater than the
battery stack’s internal resistance. The circuit in Figure
16 can be used to shunt the sense resistor whenever
power is removed from the charger.
Status Outputs
Figure 17 shows a circuit that can be used to indicate
charger status with logic levels. Figure 18 shows a
circuit that can be used to drive LEDs for power and
charger status.
Q1
D1
R2
150
DC IN
33k
Q2
500
DRV
BATT+
TO
BATTERY
POSITIVE
TERMINAL
MAX712
MAX713
Figure 15. Cascoding to Accommodate High Cell Counts for
Linear-Mode Circuits
100k
D1
V+
GND
R
SENSE
>4 CELLS
LOW R
ON
LOGIC LEVEL
N-CHANNEL
POWER
MOSFET
*
*
MAX712
MAX713
100k
Figure 16. Shunting R
SENSE
for Efficiency Improvement
V
CC
OV = NO POWER
5V = POWER
OV = FAST
V
= TRICKLE OR
NO POWER
MAX712
MAX713
V+
FASTCHG
10k
Figure 17. Logic-Level Status Outputs
V+
R1
470
MIN
FASTCHG
DC IN
CHARGE POWER
FAST CHARGE
MAX712
MAX713
Figure 18. LED Connection for Status Outputs
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX713C/D 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:NiCd/NiMH Battery Fast-Charge Controllers
MAX713CPE 功能描述:電池管理 NiCd/NiMH Battery Fast-Charge Ctlr RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX713CPE+ 功能描述:電池管理 NiCd/NiMH Battery Fast-Charge Ctlr RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX713CSE 功能描述:電池管理 NiCd/NiMH Battery Fast-Charge Ctlr RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel
MAX713CSE+ 功能描述:電池管理 NiCd/NiMH Battery Fast-Charge Ctlr RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel