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參數(shù)資料
| 型號： | L6920DCTR |
| 廠商： | STMICROELECTRONICS |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 0.9 A SWITCHING REGULATOR, 1000 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | LEAD FREE, MSOP-8 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 401K |
| 代理商： | L6920DCTR |
L6920DC
Detailed description
9/16
The maximum load current is defined by the following relationship:
Equation 1
Where
ηis the efficiency and ILIM is the current limit.
Figure 8.
No regulation C2 = Vout ; C3 = Inductor Current
5.2
Start-up
One of the key features of L6920DC is the startup at supply voltage down to 0.8V (please
see the diagram in Figure 4).
The device leaves the startup mode of operation as soon as Vout goes over 1.4V. During
startup, the synchronous switch is off and the energy is transferred to the load through its
intrinsic body diode.
The N-channel switches with a very low RDS(on) thanks to an internal charge pump used to
bias the power MOS gate. Because of this modified behavior, TON/TOFF times are
lengthened. Current limit and zero crossing detection are still available.
I
LOAD_LIM
V
in
V
out
-----------
I
LIM
T
OFF_MIN
V
out
V
in
–
2L
-------------------------
–
η
=
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參數(shù)描述 |
|---|---|
| L6920DTR | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 0.6 to 5.5V Step-Up RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
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| L6924D | 功能描述:電池管理 Battery charger system RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| L6924D_07 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:Battery charger system with integrated power switch for Li-ION/Li-POLYMER |
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