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參數(shù)資料
| 型號： | MAX1873 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Simple Current-Limited Switch-Mode Li Charger Controller |
| 中文描述： | 簡單的限流型開關(guān)模式Li+充電控制器 |
| 文件頁數(shù)： | 8/14頁 |
| 文件大?。?/td> | 206K |
| 代理商： | MAX1873 |
M
Simple Current-Limited Switch-Mode
Li+ Charger Controller
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1
CSSN
Source Current-Sense Negative Input. Connect a current-sense resistor between CSSP and CSSN to
limit total current drawn from the input source. To disable input current sensing, connect CSSN to CSSP.
2
3
CSSP
CCS
Source Current-Sense Positive Input. Also used for input source undervoltage sensing.
Input-Source-Current Regulation Loop Compensation Point
4
CCV
Battery Regulation Voltage Control-Loop Compensation Point. Pulling CCV high (to VL) through a 1.5k
resistor disables the voltage control loop for charging NiCd or NiMH batteries.
5
CCI
Battery Charge Current Control-Loop Compensation Point
Battery Charging Current Adjust/Shutdown Input. This pin can be connected to a resistive-divider
between REF and GND to adjust the charge current sense threshold between CSB and BATT. When
ICHG/EN is connected to REF, the CSB-BATT threshold is 200mV. Pull ICHG/EN low (below 500mV) to
disable charging and reduce the supply current to 5μA.
6
ICHG/EN
7
IOUT
Charge Current Monitor Output. Analog Voltage Output that is proportional to charging current. V
IOUT
= 20 (V
CSB
- V
BATT
) or 4V for a 200mV current-sense voltage (maximum load capacitance = 5nF).
8
VADJ
Battery Regulation Voltage Adjust. Set the battery regulation voltage from 3.979V per cell to 4.421V per
cell with 1% resistors. Output accuracy remains better than 0.75% even with 1% adjusting resistors
due to reduced adjustment range. For 4.2V, the voltage-divider resistors must be equal value
(nominally 100k
each).
9
REF
4.2V Reference Voltage Output. Bypass to GND with a 1μF ceramic capacitor.
10
BATT
Battery Voltage-Sense Input and Battery Current-Sense Negative Input. Bypass to GND with a 68μF for
MAX1873R, 47μF for MAX1873S, and 33μF for MAX1873T. Use capacitors with ESR < 1
.
Battery Current-Sense Positive Input
Ground
Internal VH Regulator. VH internally supplies power to the EXT driver. Connect a 0.22μF ceramic
capacitor between VH and DCIN.
Drive Output for External PFET. EXT swings from V
DCIN
to V
DCIN
- 5V.
Power-Supply Input. DCIN is the input supply for charger IC. Bypass to GND with a 0.22μF ceramic
capacitor.
11
12
CSB
GND
13
VH
14
EXT
15
DCIN
16
VL
Internal VL Regulator. VL powers the MAX1873
’
s control logic at 5.4V. Bypass to GND with a 2.2μF or
larger ceramic capacitor.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX1873SEEE | Simple Current-Limited Switch-Mode Li Charger Controller |
| MAX1873REEE | Simple Current-Limited Switch-Mode Li Charger Controller |
| MAX1873TEEE | Simple Current-Limited Switch-Mode Li Charger Controller |
| MAX1874 | MAX1874 Evaluation Kit |
| MAX1874ETE | Dual-Input, USB/AC Adapter, 1-Cell Li+ Charger with OVP and Thermal Regulation |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1873EVKIT | 功能描述:電池管理 Evaluation Kit for the MAX1873 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 |
| MAX1873REEE | 功能描述:電池管理 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 |
| MAX1873REEE+ | 功能描述:電池管理 Switch-Mode Li+ Charger 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 |
| MAX1873REEE+T | 功能描述:電池管理 Switch-Mode Li+ Charger 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 |
| MAX1873REEE-T | 功能描述:電池管理 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 |
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