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| 型号： | MAX1873TEEE+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/14页 |
| 文件大小： | 0K |
| 描述： | IC CNTRLR CHARGE LI+ 16-QSOP |
| 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，锂聚合物，镍镉，镍氢 |
| 电源电压： | 6 V ~ 28 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SSOP（0.154"，3.90mm 宽） |
| 供应商设备封装： | 16-QSOP |
| 包装： | 带卷 (TR) |
Simple Current-Limited Switch-Mode
Li+ Charger Controller
D1
MBRS340
VIN 17V TO 28V
(9V MIN FOR 2- CELLS)
C VL
2.2 μ F
C VH
0.22 μ F
VH
VL
CSSP
R P
4.7 Ω
C DCIN
0.22 μ F
4V OUT PER
200mV ON R CSB
DCIN
IOUT
MAX1873
CSSN
EXT
C P
0.01 μ F
R N
4.7 Ω
C N
0.01 μ F
P
R CSS
0.033 Ω
D2
MBRS340
C L
47 μ F
SYSTEM
LOAD
DISABLE
N
100k Ω
C CC
47nF
ICHG/EN
CCI
CSB
BATT
L1
10 μ H
R CSB
0.068 Ω
C BATT
68 μ F
C CCS
REF
C CCVS
0.1 μ F
47nF
CCS
VADJ
C REF
1 μ F
R1
LI+
BATTERY
(2- TO 4-CELLS)
R CCV
10k Ω
CCV
GND
R2
C CCVP
1nF
Figure 1. Typical Application Circuit
Detailed Description
The MAX1873 includes all of the functions necessary to
charge 2-, 3-, or 4-series cell lithium-ion (Li+) battery
packs. It includes a high-efficiency step-down DC-DC
converter that controls charging voltage and current. It
also features input source current limiting so that an AC
adapter that supplies less than the total system current
in addition to charging current can be used without fear
of overload.
The DC-DC converter uses an external P-channel MOS-
FET switch, inductor, and diode to convert the input volt-
age to charging current or charging voltage. The typical
application circuit is shown in Figure 1. Charging current
is set by R CSB , while the battery voltage is measured at
BATT. The battery regulation voltage limit is nominally
set to 8.4V for the R version (2-cells), 12.6V for the S
version (3-cells), and 16.8V for the T version (4-cells),
but it can also be adjusted to other voltages for differ-
ent Li+ chemistries.
Voltage Regulator
Li+ batteries require a high-accuracy voltage limit while
charging. The battery regulation voltage is nominally
set to 4.2V per cell and can be adjusted ±5.25% by
setting the voltage at VADJ between REF and ground.
By limiting the adjust range of the regulation voltage, an
overall voltage accuracy of better than ±0.75% is main-
tained while using 1% resistors.
An internal error amplifier maintains voltage regulation
to within ±0.75%. The amplifier is compensated at CCV
(see Figure 1). Individual compensation of the voltage
regulation and current regulation loops allows for opti-
mal compensation of each. A typical CCV compensa-
tion network is shown in Figure 1 and will suffice for
most designs.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1874ETE | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874ETE+ | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874ETE+T | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874ETE-T | 功能描述:电池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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 |
| MAX1874EVKIT | 功能描述:电池管理 Evaluation Kit for the MAX1874 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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