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PDF ETA9640 Data sheet ( Hoja de datos )
| Número de pieza | ETA9640 | |
| Descripción | 5V/1A Synchronous Boost | |
| Fabricantes | ETA | |
| Logotipo |  |
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ETA9640
5V/1A Synchronous Boost with 1A Linear Charger for Power Bank
DESCRIPTION
The ETA9640 is a fully integrated power management unit
specifically designed for Power Bank, Mobile Charger, Backup
Battery Charger applications. It consists of a high efficiency
synchronous step-up boost converter and a linear battery
charger. The boost can provide up to 1A output current at 5V
of from a Li-Ion battery input voltage, while the charger can
charge up to 1A of current from an AC adapter input. The boost
incorporates circuits that disconnect the input from output,
during shutdown, short-circuit, output current overloading, or
other events when output is higher than the input. This not only
eliminates the need for an external MOSFET and its control
circuitry to disconnect the input from output, also provides
robust output overload protection. Using a patent pending
technique to drive the charger LED indicator, it eliminates the
need for a micro-controller normally needed in mobile
chargers. While saving the cost of a micro-controller, since
the whole units only consumes less than 100uA of quiescent
current during no load, when considering standby time for one
charge, it is a much superior solution comparing to the
traditional solution that needs a micro-controller which
normally consumes up to 1mA current.
ETA9640 is available in ESOP8 package.
FEATURES
2in 1: A Synchronous boost plus A Charger
Short-circuit Protection
5W Output Power for the Boost
Boost Output to Input Reversed Current Protection
Up to 1A Charging
Up to 96% Efficiency during Boosting
100μA No load IQ
Programmable Charging Current
APPLICATIONS
Portable Power Bank
Portable 3G/4G WiFi Hotspot
Tablet PC
Portable Device power with Li-ion battery and USB output
ORDERING INFORMATION
PART
ETA9640E8A
PACKAGE PIN
ESOP-8
TOP MARK
ETA9640
YWWL ( Date Code)
TYPICAL APPLICATION
Mini USB
10uF
2.2-4.7uH
18650
锂电池
10uF
18
27
ETA9640
36
45
1.2K
充电电流(A)
1000/1.2K
22uF
1uF
1nF 放电指示部分，可省略
10K
47K 电量指示灯
120K
36K
100K
USB
V+ D- D+ V-
Typical Application Circuit
www.etasolution.com
1
Powering Minds of the Smart
1 page | ||
| Páginas | Total 4 Páginas | |
| PDF Descargar | [ Datasheet ETA9640.PDF ] | |
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