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參數(shù)資料
| 型號(hào)： | MAX1909ETI |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 電源管理 |
| 英文描述： | Multichemistry Battery Charger with Automatic System Power Selector |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, QCC28 |
| 封裝： | 5 X 5 MM, 0.80 MM HEIGHT, MO-220-WHHD-1, TQFN-28 |
| 文件頁(yè)數(shù)： | 1/29頁(yè) |
| 文件大?。?/td> | 551K |
| 代理商： | MAX1909ETI |
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General Description
The MAX1909 highly integrated control IC simplifies
construction of accurate and efficient multichemistry
battery chargers. The MAX1909 uses analog inputs to
control charge current and voltage, and can be pro-
grammed by a host microcontroller (μC) or hardwired.
High efficiency is achieved through use of buck topolo-
gy with synchronous rectification.
The maximum current drawn from the AC adapter is
programmable to avoid overloading the AC adapter
when supplying the load and the battery charger simul-
taneously. The MAX1909 provides a digital output that
indicates the presence of an AC adapter, and an ana-
log output that monitors the current drawn from the AC
adapter. Based on the presence or absence of the AC
adapter, the MAX1909 automatically selects the appro-
priate source for supplying power to the system by con-
trolling two external P-channel MOSFETs. Under system
control, the MAX1909 allows the battery to undergo a
relearning or conditioning cycle in which the battery is
completely discharged through the system load and
then recharged.
The MAX1909 is available in a space-saving 28-pin,
5mm
5mm thin QFN package and operates over the
extended -40°C to +85°C temperature range.
Applications
Notebook and Subnotebook Computers
Hand-Held Data Terminals
Features
o
±0.5% Accurate Charge Voltage (0
°
C to +85
°
C)
o
±3% Accurate Input Current Limiting
o
±5% Accurate Charge Current
o
Programmable Charge Current >4A
o
Automatic System Power-Source Selection
o
Analog Inputs Control Charge Current and
Charge Voltage
o
Monitor Outputs for
Current Drawn from AC Input Source
AC Adapter Present
o
Up to 17.65V (max) Battery Voltage
o
Maximum 28V Input Voltage
o
Greater than 95% Efficiency
o
Conditioning Charge Safely Charges
Overdischarged Li+ Packs
o
Charges Any Battery Chemistry: Li+, NiCd, NiMH,
Lead Acid, etc.
Ordering Information
M
Multichemistry Battery Charger with Automatic
System Power Selector
________________________________________________________________
Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
1
19-2805; Rev 0; 4/03
PART
TEMP RANGE
-40
°
C to +85
°
C
PIN-PACKAGE
28 Thin QFN
MAX1909ETI
28
27
26
25
24
23
22
8
9
10
11
12
13
14
15
16
17
18
19
20
21
7
6
5
4
3
2
1
MAX1909
THIN QFN
TOP VIEW
LDO
DCIN
ACIN
REF
PKPRES
ACOK
MODE
P
P
C
C
S
D
D
DLOV
DLO
PGND
CSIP
CSIN
BATT
GND
C
C
C
V
I
C
I
Pin Configuration
CSSP
CSSN
LDO
DHI
DLOV
DLO
PGND
CSIP
CSIN
BATT
GND
DCIN
VCTL
ICTL
MODE
ACIN
ACOK
CLS
CCV
CCI
CCS
REF
VCC
TO
HOST
SYSTEM
AC ADAPTER: INPUT
P3
0.01
10
μ
H
N1
P1
0.015
TO
EXTERNAL LOAD
LDO
PDS
PDL
SRC
LDO
REF
IINP
IINP
DHIV
SRC
P2
MAX1909
PKPRES
Minimum Operating Circuit
Functional Diagrams appear at end of data sheet.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX1909ETI+ | 功能描述:電池管理 Multichemistry Battery Chargers RoHS:否 制造商:Texas Instruments 電池類(lèi)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 |
| MAX1909ETI+T | 功能描述:電池管理 Multichemistry Battery Chargers RoHS:否 制造商:Texas Instruments 電池類(lèi)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 |
| MAX1909ETI-T | 功能描述:電池管理 RoHS:否 制造商:Texas Instruments 電池類(lèi)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 |
| MAX1909EVKIT | 功能描述:電池管理 Evaluation Kit for the MAX1909 RoHS:否 制造商:Texas Instruments 電池類(lèi)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 |
| MAX190ACNG | 功能描述:模數(shù)轉(zhuǎn)換器 - ADC RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32 |
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