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参数资料
| 型号： | MAX1873TEEE+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/14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： | 100 |
| 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： | 管件 |
Simple Current-Limited Switch-Mode
Li+ Charger Controller
R ESR < CSB BATT
where C OUT is the total output capacitance, V REF is the
reference voltage (4.2V), V BATT is the maximum battery
regulation voltage (typically 4.2V per cell), V DCIN (MIN)
is the minimum source-input voltage, and R CSB is the
current-sense resistor (68m Ω for 3A charging current)
from CSB to BATT.
The maximum output capacitor ESR allowed for stability is:
R × V
V REF
where R ESR is the output capacitor ESR.
Compensation Components
The three regulation loops: input current limit, charging
current limit, and charging voltage limit are compensat-
ed separately using the CCS, CCI, and CCV pins,
respectively.
The charge-current loop error-amplifier output is
brought out at CCI. Likewise, the source-current error-
amplifier output is brought out at CCS. 47nF capacitors
to ground at CCI and CCS compensate the current
loops in most charger designs. Raising the value of
these capacitors reduces the bandwidth of these loops.
The voltage-regulating loop error-amplifier output is
brought out at CCV. Compensate this loop by connect-
ing a capacitor in parallel with a series resistor-capaci-
tor from CCV to GND. Recommended values are shown
in Figure 1.
Applications Information
VL, VH, and REF Bypassing
The MAX1873 uses two internal linear regulators to
power internal circuitry. The outputs of the linear regu-
lators are at VL and VH. VL powers the internal control
tings do not interfere with charging. However, the bat-
tery undervoltage-protection features remain active so
charging current is reduced when V BATT is less than
the levels stated in the BATT Undervoltage Threshold
line in the Electrical Characteristics Table. 5- or 6-series
Ni cells may be charged with the R version device, 7-
to 9-cells with the S version, and 10-cells with the T ver-
sion.
The MAX1873 contains no charge-termination algo-
rithms for Ni cells; it acts only as a current source. A
separate microcontroller or Ni-cell charge controller
must instruct the MAX1873 to terminate charging.
Chip Information
PROCESS: BiCMOS
TRANSISTOR COUNT: 1397
Pin Configuration
TOP VIEW
circuitry while VH powers the MOSFET gate driver. VL
may also power a limited amount of external circuitry,
as long as its maximum current (3mA) is not exceeded.
CSSN 1
CSSP 2
16 VL
15 DCIN
A 2.2μF bypass capacitor is required from VL to GND
to ensure stability. A 0.22μF capacitor is required from
VH to DCIN. A 1μF bypass capacitor is required
between REF and GND to ensure that the internal 4.2V
reference is stable. In all cases, use low-ESR ceramic
capacitors.
CCS 3
CCV 4
CCI 5
ICHG/EN 6
IOUT 7
MAX1873R/S/T
14 EXT
13 VH
12 GND
11 CSB
10 BATT
Charging NiMH and NiCd Cells
The MAX1873 may be used in multichemistry chargers.
When charging NiMH or NiCd cells, pull CCV high (to
VL) with a 1.5 k Ω resistor. This disables the voltage
VADJ 8
16 QSOP
9
REF
control loop so the Li+ battery-regulation voltage set-
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1873TEEE+ | 功能描述:电池管理 Switch-Mode Li+ Charger 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 |
| MAX1873TEEE+T | 功能描述:电池管理 Switch-Mode Li+ Charger 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 |
| MAX1873TEEE-T | 功能描述:电池管理 Switch-Mode Li+ Charger 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+ | 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 |
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