LTC4056-4.2 - LTC4056-4.2是Linear Li-Ion Charger with Termination in ThinSOT
LTC4056-4.2是Linear公司的一款线性充电器产品，LTC4056-4.2是Linear Li-Ion Charger with Termination in ThinSOT，本站介绍了LTC4056-4.2的封装应用图解、特点和优点、功能等，并给出了与LTC4056-4.2相关的凌力尔特元器件型号供参考。
LTC4056-4.2 - Linear Li-Ion Charger with Termination in ThinSOT
LTC4056-4.2 - Linear Li-Ion Charger with Termination in ThinSOT - Linear Technology（凌力尔特）
功能描述
The LTC4056 is a low cost, single-cell, constant-current/ constant-voltage Li-Ion battery charger controller with a programmable termination timer. When combined with a few external components, the LTC4056 forms a very small standalone charger for single cell lithium-ion batteries.
Charge current and charge time are set externally with a single resistor and capacitor, respectively. The LTC4056 charges to a final float voltage accurate to ±0.6%. Manual shutdown is accomplished by grounding the TIMER/ SHDN pin, while removing input power automatically puts the LTC4056 into a sleep mode. Both the shutdown and sleep modes drain near zero current from the battery; the shutdown mode reduces supply current to 40µA.
The output driver is both current limited and thermally protected to prevent operating outside of safe limits. No external blocking diode or sense resistor is required. The LTC4056 also includes low battery charge conditioning (trickle charging), undervoltage charge current limiting, automatic recharge and a charge status output.
The LTC4056 is available in a low profile (1mm) 8-lead SOT-23 (ThinSOT™) package.
特点
Standalone Li-Ion Charger with Termination Programmable Termination Timer No Sense Resistor or Blocking Diode Required Suitable for USB-Powered Charging Undervoltage Charge Current Limiting Preset Charge Voltage with ±0.6% Accuracy Programmable Charge Current: 200mA to 700mA Automatic Recharge with Shortened Charge Cycle Self-Protection for Overcurrent/Overtemperature 40µA Supply Current in Shutdown Mode Negligible Battery Drain Current in Shutdown Low Battery Charge Conditioning (Trickle Charging) CHRG Status Output including AC Present PCB Total Solution Area only 75mm² (700mA) Low Profile (1mm) SOT-23 Package应用
Cellular Telephones Handheld Computers Digital Cameras Charging Docks and Cradles Low Cost and Small Size Chargers以下列出了不同封装及包装形式的具体型号,并标出了直接在linear官网上订货的价格（美元）
| 器件型号 | 封装 | 温度 | 价格 (以 1 ~ 99 片为批量) | 价格 (以 1000 片为批量) |
| LTC4056ETS8-4.2 | SOT-23 | E | $2.14 | |
| LTC4056ETS8-4.2#PBF | SOT-23 | E | $2.14 | |
| LTC4056ETS8-4.2#TR | SOT-23 | E | $2.14 | $1.41 |
| LTC4056ETS8-4.2#TRM | SOT-23 | E | $2.14 | $1.43 |
| LTC4056ETS8-4.2#TRMPBF | SOT-23 | E | $2.14 | $1.43 |
| LTC4056ETS8-4.2#TRPBF | SOT-23 | E | $2.14 | $1.41 |
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