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A4051MP8VRA規(guī)格書詳情
DESCRIPTION
The
A4051 is a complete constant current & constant
voltage linea r charger for single cell lithium ion
batteries. Its P SOP 8 pac kage and low external
component count make the A4051 ideally suited for
portable applications. Furthermore, the A4051 is
specifically designed to work within USB power
specifications.
No external sense resistor is needed, and no blocking
diode is required due to the internal MOSFET
architecture. Thermal feedback regulates the charge
current to limit the die tem perature during high power
operation or high ambient temperature. The charge
voltage is fixed at 4.2V, and the charge current can
be programmed externally with a single resistor. The
A4051
automatically terminates the charge cycle
when the charge current d rops to 1/10 th the
programmed value after the final float voltage is
reached.
When the input supply (wall adapter or USB supply)
is removed, the A4051 automatically enters a low
current state, dropping the battery drain current to
less than 0.5uA. The A405 1 can be put into shutdown
mode, reducing the supply current to 50uA.
Other features include Battery temperature monitor,
under voltage lockout, automatic recharge and two
status pins to indicate charge and charge termination.
The
A4051 is available in PS OP 8 p ackage
FEATURES
? Programmable Charge Current Up to 1000mA
? 1/10th of the constant charge current
? No MOSFET, Sense Resistor or Blocking Diode
Required
? Complete Linear Charger in P SOP 8 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
? Charge Current Monitor Output for Gas Gauging
? Automatic Recharge
? Charge state pairs of output, no battery and fault
status display
? C/10 Charge Termination
? 50uA Supply Current in Shutdown
? 2.9V Trickle Charge Threshold
? Soft-Start Limits Inrush Current
? Battery temperature monitoring function
? Available in PSOP8 package APPLICATION
? Cellular Telephones, PDAs, MP3 /MP4 Players
? Charging Docks and Cradles
? Bluetooth 、GPS Applications
供應(yīng)商 | 型號(hào) | 品牌 | 批號(hào) | 封裝 | 庫存 | 備注 | 價(jià)格 |
---|---|---|---|---|---|---|---|
AIT |
22+ |
SO23-5 |
25000 |
原裝現(xiàn)貨,價(jià)格優(yōu)惠,假一罰十 |
詢價(jià) | ||
AIT |
23+ |
SO23-5 |
10000 |
原裝正品現(xiàn)貨 |
詢價(jià) | ||
AIT |
22+ |
SOT23-5 |
9600 |
原裝現(xiàn)貨,優(yōu)勢(shì)供應(yīng),支持實(shí)單! |
詢價(jià) | ||
AIT |
23+ |
11PB |
20000 |
原廠原裝正品現(xiàn)貨 |
詢價(jià) | ||
AIT-IC |
24+ |
SOT23-5 |
362652 |
充電IC原裝現(xiàn)貨有優(yōu)勢(shì) |
詢價(jià) | ||
AIT |
23+ |
11PB |
999999 |
原裝正品現(xiàn)貨量大可訂貨 |
詢價(jià) | ||
AIT |
23+ |
SO23-5 |
50000 |
全新原裝正品現(xiàn)貨,支持訂貨 |
詢價(jià) | ||
AIT-IC |
2018+ |
SOT23-5 |
13692 |
充電IC原裝現(xiàn)貨有優(yōu)勢(shì) |
詢價(jià) | ||
AIT |
24+ |
11PB |
18560 |
假一賠十全新原裝現(xiàn)貨特價(jià)供應(yīng)工廠客戶可放款 |
詢價(jià) | ||
AIT |
23+ |
NA/ |
1094 |
優(yōu)勢(shì)代理渠道,原裝正品,可全系列訂貨開增值稅票 |
詢價(jià) |