參數(shù)資料
型號： MAX1874
廠商： Maxim Integrated Products, Inc.
英文描述： MAX1874 Evaluation Kit
中文描述： USB/AC適配器雙路輸入、1節(jié)Li+電池充電器，帶OVP與溫度調(diào)節(jié)
文件頁數(shù)： 5/16頁
文件大小： 405K
代理商： MAX1874
M
Dual-Input, USB/AC Adapter, 1-Cell
Li+ Charger with OVP and Thermal Regulation
_______________________________________________________________________________________
5
ELECTRICAL CHARACTERISTICS (continued)
(V
USB
= V
DC
= V
DCLV
= V
EN
= V
USEL
= 5V, V
BATT
= 4.2V, V
THRM
= V
REF
/ 2, Circuit of Figure 2,
T
A
= -40
°
C to +85
°
C
, unless otherwise
noted. Typical values are at T
A
= +25
°
C.) (Note 4)
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
BATTERY VOLTAGE
BATT Regulation Voltage
BATT Prequal Voltage Threshold
4.1685
2.8
4.2315
3.2
V
V
BATT rising
REF Voltage (Buffered Output)
I
REF
= 0 to 500μA, 4V < V
DC
or V
USB
< 6.5V;
does not affect BATT regulation accuracy
2.94
3.06
V
BATTERY CHARGING AND PRECHARGE CURRENT
DCI Voltage Range
0.1 x V
REF
930
490
V
REF
1070
565
495
95
70
7.5
2
V
V
DCI
= V
REF
V
DCI
= V
REF
/ 2
USEL = high
USEL = low
V
BATT
= 2.5V
No DC or USB power, V
BATT
= 4.2V
EN = GND, USB and/or DC powered
DCI Voltage to BATT Current
mA
USB Charging Current
mA
Prequal Charging Current
BATT Input Current
BATT Shutdown Current
THERMISTOR MONITOR AND DIE-TEMPERATURE REGULATION
THRM COLD Trip Level
THRM HOT Trip Level
THRM Disable Threshold
LOGIC INPUT/OUTPUTS AND GATE DRIVERS
DCOK
Off-Leakage Current
UOK
Off-Leakage Current
40
mA
μA
μA
(Note 2)
(Note 2)
0.72
0.28
50
0.76
0.30
150
V
REF
V
REF
mV
V
DCOK
= 12V, V
DC
= 0V
V
UOK
= 6.5V
DC input (% of charge current set at DCI)
1
1
20
μA
μA
8
CHG
Threshold to Indicate Battery Full,
Battery Current Falling (Note 3)
USB input, USEL = 5V
(% of USB charging current)
20
30
%
CHG
Logic-Low Output
CHG
Leakage Current
EN, USEL Logic-Input High Level
EN, USEL Logic-Input Low Level
EN, USEL Input Bias Current
Sinking 10mA sink
V
CHG
= 6.5V
0.4
1
V
μA
V
V
μA
1.6
0.4
1
Note 1:
BYP internally connects to the active power input (DCLV or USB). DCLV takes priority if both inputs are powered.
Note 2:
These limits guarantee +5
°
C accuracy with 5% accuracy of thermistor beta (3450 nominal) with 2
°
C of hysteresis.
Note 3:
The
CHG
output does not go high unless charge current is below the indicated threshold (as set by DCI) and the charger is in
voltage-mode operation. In 100mA USB mode,
CHG
goes high when the charger transitions from current to voltage mode.
Note 4:
Specifications to -40
°
C are guaranteed by design, not production tested.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX1874ETE 功能描述:電池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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
MAX1874ETE+ 功能描述:電池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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
MAX1874ETE+T 功能描述:電池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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
MAX1874ETE-T 功能描述:電池管理 Dual-Input USB/AC Adapter 1-Cell Li+ 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
MAX1874EVKIT 功能描述:電池管理 Evaluation Kit for the MAX1874 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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