參數(shù)資料
型號: LT3686IDD#TRPBF
廠商: LINEAR TECHNOLOGY CORP
元件分類: 穩(wěn)壓器
英文描述: 2.65 A SWITCHING REGULATOR, 2500 kHz SWITCHING FREQ-MAX, PDSO10
封裝: 3 X 3 MM, LEAD FREE, PLASTIC, MO-229WEED-2, DFN-10
文件頁數(shù): 7/28頁
文件大小: 509K
代理商: LT3686IDD#TRPBF
LT3686
15
3686fc
Figure 7 shows the transient response of the LT3686 with
several output capacitor choices. The output is 3.3V. The
loadcurrentissteppedfrom0.25Ato1Aandbackto0.25A,
and the oscilloscope traces show the output voltage. The
upper photo shows the recommended value. The second
photo shows the improved response (less voltage drop)
resulting from a larger output capacitor and a phase lead
capacitor. The last photo shows the response to a high
performance electrolytic capacitor. Transient performance
is improved due to the large output capacitance.
ApplicAtions inForMAtion
BOOST and BD Pin Considerations
Capacitor C3 and the internal boost diode are used to
generate a boost voltage that is higher than the input
voltage. In most cases a 0.22μF capacitor will work well.
Figure 8 shows two ways to arrange the boost circuit. The
BOOST pin must be at least 2.2V above the SW pin for
best efficiency. For outputs of 3V and above, the standard
circuit (Figure 8a) is best. For outputs less than 3V and
above 2.5V, place a discrete Schottky diode (such as the
Figure 7. Transient Load Response of the LT3686 with Different Output Capacitors as the Load Current Is Stepped from 0.25A to 1A.
VIN = 12V, VOUT = 3.3V, L = 6.8H , Frequency = 2MHz
32.4k
10k
FB
VOUT
22F
32.4k
10k
FB
VOUT
47pF
22F
×2
32.4k
10k
FB
VOUT
100F
SANYO
4TPB100M
+
3686 F07a
3686 F07d
3686 F07g
VOUT
50mV/DIV
AC
IL
500mA/DIV
20s/DIV
3686 F07b
VOUT
50mV/DIV
AC
IL
500mA/DIV
20s/DIV
MODE < 0.4V
MODE > 0.8V
3686 F07c
VOUT
50mV/DIV
AC
IL
500mA/DIV
20s/DIV
3686 F07e
VOUT
50mV/DIV
AC
IL
500mA/DIV
20s/DIV
3686 F07h
VOUT
50mV/DIV
AC
IL
500mA/DIV
20s/DIV
3686 F07i
VOUT
50mV/DIV
AC
IL
500mA/DIV
20s/DIV
3686 F07f
相關(guān)PDF資料
PDF描述
LT3688IFE#TRPBF SWITCHING REGULATOR, PDSO24
LT3688EUF#PBF SWITCHING REGULATOR, PQCC24
LT3688IFE#PBF SWITCHING REGULATOR, PDSO24
LT3688HFE#PBF SWITCHING REGULATOR, PDSO24
LT3688HFE#TRPBF SWITCHING REGULATOR, PDSO24
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT3688 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 800mA Step-Down Switching Regulator with Power-On Reset
LT3688EFE#PBF 功能描述:IC REG BUCK ADJ 0.8A DL 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓模塊:MIC23xxx HyperLight Load™ Regulators 標準包裝:5,000 系列:HyperLight Load® 類型:降壓(降壓) 輸出類型:固定 輸出數(shù):1 輸出電壓:1.8V 輸入電壓:2.7 V ~ 5.5 V PWM 型:混合物 頻率 - 開關(guān):4MHz 電流 - 輸出:2A 同步整流器:是 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤,8-MLF? 包裝:帶卷 (TR) 供應(yīng)商設(shè)備封裝:8-MLF?(2x2) 產(chǎn)品目錄頁面:1094 (CN2011-ZH PDF) 其它名稱:576-3303-2
LT3688EFE#TRPBF 功能描述:IC REG BUCK ADJ 0.8A DL 24TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓(升壓) 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細型,TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT
LT3688EFEPBF 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual 800mA Step-Down Switching Regulator with Power-On Reset
LT3688EUF#PBF 功能描述:IC REG BUCK ADJ 0.8A DL 24QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關(guān)穩(wěn)壓器 系列:- 設(shè)計資源:Design Support Tool 標準包裝:1 系列:- 類型:升壓(升壓) 輸出類型:固定 輸出數(shù):1 輸出電壓:3V 輸入電壓:0.75 V ~ 2 V PWM 型:- 頻率 - 開關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-5 細型,TSOT-23-5 包裝:剪切帶 (CT) 供應(yīng)商設(shè)備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT