參數(shù)資料
型號(hào)： MAX1644
廠商： Maxim Integrated Products, Inc.
英文描述： Advanced Chemistry-Independent, Level 2 Battery Charger with Input Current Limiting
中文描述： 2A、低電壓、降壓型穩(wěn)壓器，內(nèi)置同步整流與開(kāi)關(guān)
文件頁(yè)數(shù)： 5/32頁(yè)
文件大?。?/td> 183K
代理商： MAX1644
M
Advanc ed Chemistry-Independent, Level 2
Battery Charger with Input Current Limiting
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(Circuit of Figure 1, V
DD
= +3.3V, V
BATT
= +16.8V, V
DCIN
= +18V,
T
A
= 0°C to +85°C
, unless otherwise noted. Typical values are at
T
A
= +25°C.)
CONDITIONS
UNITS
μs
MIN
TYP
MAX
1
SYMBOL
t
DV
PARAMETER
sec
140
175
210
t
WDT
Maximum Charge Period
Without a ChargingVoltage() or
Charging Current() Loaded
SDA Output Data Valid from SCL
ELECTRICAL CHARACTERISTICS
(Circuit of Figure 1, V
DD
= +3.3V, V
BATT
= +16.8V, V
DCIN
= +18V,
T
A
= -40°C to +85°C
, unless otherwise noted. Guaranteed by design.)
PARAMETER
SYMBOL
MIN
MAX
UNITS
LDO Output Voltage
V
LDO
5.15
5.65
V
7
DCIN Undervoltage Threshold
7.85
V
DCIN Supply Current Charging
Inhibited
2
mA
V
DD
Input Voltage Range
(Note 1)
2.8
5.65
V
V
DD
Undervoltage Threshold
2.8
V
2.1
V
DD
Quiescent Current
I
DD
150
μA
DCIN Typical Operating Range
DCIN Supply Current
V
DCIN
I
DCIN
8
28
6
V
mA
REF Output Voltage
V
REF
4.035
4.157
V
BATT Undervoltage Threshold
(Note 2)
2.4
2.8
V
PDS Charging Source Switch
Turn-Off Threshold
V
PDS-OFF
50
150
mV
PDS Charging Source Switch
Threshold Hysteresis
V
PDS-HYS
100
300
mV
PDS Output Low Voltage, PDS
Below CSSP
8
12
V
PDS Turn-On Current
PDS Turn-Off Current
100
10
300
μA
mA
PDL Load Switch Turn-Off
Threshold
V
PDL-OFF
-150
-50
mV
PDL Load Switch Threshold
Hysteresis
V
PDL-HYS
100
300
mV
PDL Turn-Off Current
6
mA
CONDITIONS
0 < I
REF
< 200μA
8V < V
DCIN
< 28V, 0 < I
LDO
< 15mA
When I
CHARGE
drops to 128mA
When AC_PRESENT
switches
8V < V
DCIN
< 28V
8V < V
DCIN
< 28V
When the SMB res-
ponds to commands
V
CVS
referred to V
BATT
, V
CVS
falling
V
CVS
referred to V
BATT
0 < V
DCIN
< 6V, V
DD
= 5V, V
SCL
= 5V,
V
SDA
= 5V
I
PDS
= 0
PDS = CSSP
V
PDS
= V
CSSP
- 2V, V
DCIN
= 16V
V
CVS
referred to V
BATT
, V
CVS
rising
V
CVS
referred to V
BATT
V
CSSN
- V
PDL
= 1V
8V < V
DCIN
< 28V
DCIN rising
DCIN falling
V
DD
rising
V
DD
falling
GENERAL SPECIFICATIONS
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MAX1644EAE 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE/GH9 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE/GH9-T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE+ 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
MAX1644EAE+T 功能描述:直流/直流開(kāi)關(guān)轉(zhuǎn)換器 2A Step-Dow w/Synch Rectification RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT
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