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參數(shù)資料
| 型號： | MAX1870A |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | Step-Up/Step-Down Li+ Battery Charger |
| 中文描述： | 升/降壓型Li+電池充電器 |
| 文件頁數(shù)： | 12/32頁 |
| 文件大?。?/td> | 1091K |
| 代理商： | MAX1870A |
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M
Step-Up/Step-Down
Li+ Battery Charger
12
______________________________________________________________________________________
Typical Operating Characteristics (continued)
(Circuit of Figure 1, V
DCIN
= 16V, CELLS = REFIN, V
CLS =
V
REF
, V
ICTL
= V
REFIN
= 3.3V, T
A
= +25
°
C, unless otherwise noted.)
Pin Description
PIN
NAME
FUNCTION
1
LDO
Device Power Supply. Output of the 5.4V linear regulator supplied from DCIN. Bypass LDO to GND with
a 1μF or greater ceramic capacitor.
2
REF
4.096V Voltage Reference. Bypass REF to GND with a 1μF or greater ceramic capacitor.
3
CLS
Source Current-Limit Input. Voltage input for setting the current limit of the input source. See the
Setting
the Input Current Limit
section.
4, 8
GND
Analog Ground
5
CCV
Voltage Regulation Loop Compensation Point. Connect a 10k
resistor in series with a 0.01μF capacitor
to GND.
6
7
9
CCI
CCS
REFIN
Charge-Current Regulation Loop Compensation Point. Connect a 0.01μF capacitor to GND.
Input-Current Regulation Loop Compensation Point. Connect a 0.01μF capacitor to GND.
Reference Input. ICTL and VCTL are ratiometric with respect to REFIN for increased accuracy.
10
ASNS
Adapter Sense Output. Logic output is high when input current is greater than 1.5A (using 30m
sense
resistors and a 10k
resistor from IINP to GND).
11
VCTL
Charge-Voltage Control Input. Drive VCTL from 0 to V
REFIN
to adjust the charge voltage from 4V to 4.4V
per cell. See the
Setting the Charge Voltage
section.
STEP-UP
SWITCHING WAVEFORM
M
0V
D4
10V
D3 ANODE
0V
CATHODE
INDUCTOR CURRENT
2A
4A
V
(AC-COUPLED)
50mV/div
10V
20V
2.00
μ
s
V
IN
= 12V
V
BATT
= 16V
STEP-UP/STEP-DOWN
LIGHT LOAD
M
0V
D4
10V
D3 ANODE
0V
CATHODE
INDUCTOR CURRENT
2A
4A
V
(AC-COUPLED)
50mV/div
10V
20V
2.00
μ
s
V
IN
= 16V
V
BATT
= 16V
CHARGE CURRENT = 300mA
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1870AETJ | 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 |
| MAX1870AETJ+ | 功能描述:電池管理 Li+ Step Up/Step Down Battery 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 |
| MAX1870AETJ+T | 功能描述:電池管理 Li+ Step Up/Step Down Battery 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 |
| MAX1870AETJ-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 |
| MAX1870AEVKIT | 功能描述:電源管理IC開發(fā)工具 Evaluation Kit for the MAX1870A RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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