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Datenblatt-Suchmaschine für elektronische Bauteile |
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Datenblatt-Suchmaschine für elektronische Bauteile |
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LN2053_E Datenblatt(PDF) 1 Page - Shanghai Natlinear Electronics Co., Ltd. |
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LN2053_E Datenblatt(HTML) 1 Page - Shanghai Natlinear Electronics Co., Ltd. |
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1 / 11 page  LN2053 Rev.1.1 —Aug. 20, 2015 1 www.natlinear.com 1A is compatible with the USB interface, linear battery management chip ■ General Description The LN2053 is a constant- current / constant- voltage charger circuit for single cell lithium-ion batteries. The device includes an internal power transistor, does not need external current sense resistor and blocking diode in applications. LN2053 requires minimal external components, and meet the USB bus specification, is very suitable for portable applications in the field. Thermal modulation circuit can control the chip temperature in a safe range when the device power dissipation is relatively large or the ambient temperature is higher. Within a fixed constant charge voltage 4.2V, can also be adjusted by an external resistor. Charge current set by an external resistor. When the input voltage (AC adapter or USB power supply) power is lost, LN2053 automatically enters a low power sleep mode, and then the battery current consumption is less than 3μA. Built-in protection circuits against irrigation, when the battery voltage is higher than the input voltage, automatically turn off built-in power MOSFET. Other features include low input voltage latch, automatic recharge, the battery temperature protect and charge status / charge status indication functions.LN2053 uses thermally enhanced 8-pin small outline package eOP-8. ■ Applications Mobile phones Digital cameras MP4 player Bluetooth applications Electronic dictionary Portable devices All kinds of charger ■ Features Programmable charge current up to 1A No MOSFET, sense resistor or blocking diode required Complete linear charger in small package for single cell lithium-ion batteries Constant-current/constant-voltage operation with thermal regulation to maximize charge rate without risk of overheating Charges single cell li-ion batteries directly from USB port Preset 4.2V charge voltage with 1% accuracy, also can be adjusted by FB Monitor output charge current Automatic recharge Charge status output pin 1/10 charge current termination 25µA supply current in shutdown 2.9V trickle charge threshold Soft-Start limits inrush current Output with protection against anti-irrigation Available in SOP-8 Package ■ Package eSOP-8 ■ Ordering Information LN2053①②③④⑤ Designator Description Symbol Description ① Type Y Have trickle charge ② The output voltage of regulator 2 4.2/3.65V ④ Packaging Types S eSOP-8 ⑤ Device Orientation R Standard feed L Reverse feed |
Ähnliche Teilenummer - LN2053_E |
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Ähnliche Beschreibung - LN2053_E |
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