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TMI4054

零售价
0.0
市场价
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浏览量:
1000
产品编号
Vin Range (V):
2 to 8
VBAT (V):
4.2 ± 1%
ICHG (A):
Adj. up to 0.8
IBAT_STB (μA):
2.5
Vout_Max (V):
/
Function:
ICHG adjustable
Package:
SOT23-5
Status:
MP
数量
-
+
库存:
0
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FEATURES
参数
GENERAL DESCRIPTION
APPLICATIONS
TYPICAL APPILCATION
  • Programmable Charge Current Up to 1A

  • No MOSFET, Sense Resistor or Blocking Diode Required

  • Charge Single Cell Li-ion Battery Directly from USB Port

  • Trickle Current, Constant Current and Constant Voltage Operation with Thermal Regulation to Maximize Charge Rate without Overheating

  • <1µA Battery Quiescent Current

  • Preset 4.2V Battery Charge Voltage with ±1% Accuracy

  • Automatically Recharge

  • Charge Statue Indication Pin

  • SOT23-5 Package

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The TMI4054 is a complete constant-current and constant-voltage linear charger for single cell Li-ion battery application.

The default battery charge voltage is fixed at 4.2V, and the charging current can be programmed by external resistor on PROG pin. The charging current could be programmed up to 800mA with good system thermal design. When the charging current drops to 1/10 programmed charging current value after the BAT voltage reaching battery charge voltage, TMI4054 automatically terminates the charge cycle with charging current becomes to 0 and  pin status changes. Thermal regulation function can regulate charging current to limit the die temperature during high power condition or high ambient temperature application.

When the input supply is removed, the TMI4054 automatically enters low current state with less 1μA current dropping from battery side. Its SOT23-5 package and less external components make TMI4054 suited for portable applications.

  • Portable Devices

  • Power Bank

  • Charging Docks and Cradles

  • Bluetooth Applications

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2020-09-20 21:32:28
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