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参数资料
| 型号： | MAX1909 |
| 厂商： | Maxim Integrated Products, Inc. |
| 英文描述： | Multichemistry Battery Charger with Automatic System Power Selector |
| 中文描述： | 多种化学类型电池充电器，自动选择系统电源 |
| 文件页数： | 12/29页 |
| 文件大小： | 551K |
| 代理商： | MAX1909 |
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M
Multichemistry Battery Charger with Automatic
System Power Selector
12
______________________________________________________________________________________
Pin Description
PIN
1
2
NAME
DCIN
LDO
FUNCTION
DC Supply Voltage Input. Bypass DCIN with a 1μF capacitor to power ground.
D evi ce P ow er S up p y. Outp ut of the 5.4V l near r eg ul ator sup p ed fr om D C N Byp ass w h a 1μF cap aci or
AC Detect Input. This uncommitted comparator input can be used to detect the presence of the charger
’
s
power source. The comparator
’
s open-drain output is the ACOK signal.
4.2235V Voltage Reference. Bypass with a 1μF capacitor to GND.
Pull
PKPRES
high to disable charging. Used for detecting presence of battery pack. This input can also be
used as a simple shutdown control.
AC Detect Output. High-voltage open-drain output is high impedance when ACIN is greater than 2.048V. The
ACOK output remains a high impedance when the MAX1909 is powered down.
Trilevel Input for Setting Number of Cells and Asserting the Conditioning Mode:
MODE = GND; asserts conditioning mode.
MODE = float; charge with 3 times the cell voltage programmed at VCTL.
MODE = LDO; charge with 4 times the cell voltage programmed at VCTL.
Input Current Monitor Output. The current delivered at the IINP output is a scaled-down replica of the system
load current plus the input-referred charge current sensed across CSSP and CSSN inputs. The
transconductance of (CSSP - CSSN) to IINP is 3mA/V.
Source Current-Limit Input. Voltage input for setting the current limit of the input source.
Input for Setting Maximum Output Current
Input for Setting Maximum Output Voltage
Output Current Regulation Loop Compensation Point. Connect 0.01μF to GND.
Voltage Regulation Loop Compensation Point. Connect 20k
in series with 0.01μF to GND.
Input Current Regulation Loop Compensation Point. Use 470pF to GND.
Analog Ground
Battery Voltage Feedback Input
Output Current-Sense Negative Input
Output Current-Sense Positive Input. Connect a current-sense resistor from CSIP to CSIN.
Power Ground
Low-Side Power MOSFET Driver Output. Connect to low-side NMOS gate. When the MAX1909 is shut down,
the DLO output is LOW.
Low-Side Driver Supply. Bypass with a 0.1μF capacitor to ground.
High-Side Driver Supply. Bypass with a 0.1μF capacitor to SRC.
High-Side Power MOSFET Driver Output. Connect to high-side PMOS gate. When the MAX1909 is shut down,
the DHI output is HIGH.
Source Connection for Driver for PDS/PDL Switches. Bypass SRC to power ground with a 1μF capacitor.
Input Current Sense for Charger (Negative Input).
Input Current Sense for Charger (Positive Input). Connect a current-sense resistor from CSSP to CSSN.
Power Source PMOS Switch Driver Output. When the MAX1909 is powered down, the PDS output is pulled to
SRC through an internal 1M
resistor.
System Load PMOS Switch Driver Output. When the MAX1909 is powered down, the PDL output is pulled to
ground through an internal 100k
resistor.
3
ACIN
4
REF
5
PKPRES
6
ACOK
7
MODE
8
IINP
9
10
11
12
13
14
15
16
17
18
19
CLS
ICTL
VCTL
CCI
CCV
CCS
GND
BATT
CSIN
CSIP
PGND
20
DLO
21
22
DLOV
DHIV
23
DHI
24
25
26
SRC
CSSN
CSSP
27
PDS
28
PDL
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1909ETI | 功能描述:电池管理 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 |
| MAX1909ETI+ | 功能描述:电池管理 Multichemistry Battery Chargers 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 |
| MAX1909ETI+T | 功能描述:电池管理 Multichemistry Battery Chargers 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 |
| MAX1909ETI-T | 功能描述:电池管理 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 |
| MAX1909EVKIT | 功能描述:电池管理 Evaluation Kit for the MAX1909 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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