參數(shù)資料
型號(hào)： L6924U
廠商： STMICROELECTRONICS
元件分類： 電源管理
英文描述： POWER SUPPLY SUPPORT CKT, QCC16
封裝： 3 X 3 MM, ROHS COMPLIANT, VFQFP-16
文件頁(yè)數(shù)： 24/38頁(yè)
文件大?。?/td> 598K
代理商： L6924U
Additional applications information
L6924U
30/38
9
Additional applications information
9.1
Selecting input capacitor
In most applications, a 1 F ceramic capacitor, placed close to the VIN and VINSN pins can
be used to filter the high frequency noise.
9.1.1
Selecting output capacitor
Typically, a 4.7 F ceramic capacitor placed close to the VOUT and VOUTSN pin is enough to
keep voltage control loop stable. This ensures proper operation of battery absent detection
in removable battery pack applications.
9.2
Layout guidelines and demonstration board
The thermal loop keeps the device at a constant temperature of approximately 120 °C which
in turn, reduces ICHG. However, in order to maximize the current capability, it is important to
ensure a good thermal path. Therefore, the exposed pad must be properly soldered to the
board and connected to the other layer through thermal vias. The recommended copper
thickness of the layers is 70
m or more.
The exposed pad must be electrically connected to GND. Figure 22 shows the thermal
image of the board with the power dissipation of 1 W. In this instance, the temperature of the
case is 89 °C, but the junction temperature of the device is given by the following formula:
Equation 25
Where the RthJA of the device mounted on board is 75 °C/W, the power dissipated is 1 W,
and the ambient temperature is 25 °C.
In this case the junction temperature is:
Equation 26
AMB
DISS
A
THJ
J
T
P
R
T
+
×
=
C
T
J
o
100
25
1
75
=
+
×
=
相關(guān)PDF資料
PDF描述
L6926D1013TR 1.65 A SWITCHING REGULATOR, 800 kHz SWITCHING FREQ-MAX, PDSO8
L6996D SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDSO24
L9524C-TR SPECIALTY ANALOG CIRCUIT, PDSO24
L9949 BRUSH DC MOTOR CONTROLLER, 10 A, PDSO20
L99PD08TR POWER SUPPLY MANAGEMENT CKT, PQFP32
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L6924U013TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:USB compatible battery charger system with integrated power switch for Li-Ion/Li-Polymer
L6924UTR 功能描述:電池管理 Battery Charger USB Compatible 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
L6925 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
L6925013TR 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:HIGH EFFICIENCY MONOLITHIC SYNCHRONOUS STEP DOWN REGULATOR
L6925D 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 Synchronous Step-Dwn RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*