- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44984 > LT3506IDHD#TR (LINEAR TECHNOLOGY CORP) 3.6 A SWITCHING REGULATOR, 650 kHz SWITCHING FREQ-MAX, PDSO16 PDF資料下載
參數(shù)資料
| 型號： | LT3506IDHD#TR |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 3.6 A SWITCHING REGULATOR, 650 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封裝： | 5 X 4 MM, PLASTIC, MO-229WJGD-2, DFN-16 |
| 文件頁數(shù)： | 4/24頁 |
| 文件大?。?/td> | 210K |
| 代理商： | LT3506IDHD#TR |
LT3506/LT3506A
12
3506afc
BOOST Pin Considerations
The capacitor and diode tied to the BOOST pin generate
a voltage that is higher than the input voltage. In most
cases a 0.1μF capacitor and fast switching diode (such
as the CMDSH-3 or FMMD914) will work well. Figure 3
shows three ways to arrange the boost circuit. The BOOST
pin must be more than 2.5V above the SW pin for full
efciency. For outputs of 3.3V and higher the standard
circuit (Figure 3a) is best. For outputs between 2.8V and
3.3V, use a small Schottky diode (such as the BAT-54).
For lower output voltages the boost diode can be tied to
the input (Figure 3b). The circuit in Figure 3a is more ef-
cient because the BOOST pin current comes from a lower
voltage source. Finally, as shown in Figure 3c, the anode
of the boost diode can be tied to another source that is
at least 3V. For example, if you are generating 3.3V and
1.8V and the 3.3V is on whenever the 1.8V is on, the 1.8V
boost diode can be connected to the 3.3V output. In any
case, you must also be sure that the maximum voltage at
the BOOST pin is less than the maximum specied in the
Absolute Maximum Ratings section.
The boost circuit can also run directly from a DC voltage
that is higher than the input voltage by more than 3V,
as in Figure 3d. The diode is used to prevent damage to
the LT3506 in case VINB is held low while VIN is present.
The circuit saves several components (both BOOST pins
can be tied to D2). However, efciency may be lower and
dissipation in the LT3506 may be higher. Also, if VINB is
absent, the LT3506 will still attempt to regulate the output,
but will do so with very low efciency and high dissipation
because the switch will not be able to saturate, dropping
1.5V to 2V in conduction.
VIN
BOOST
GND
SW
VIN
LT3506
(3a)
D2
VOUT
C3
VBOOST – VSW VOUT
MAX VBOOST VIN + VOUT
VIN
BOOST
GND
SW
VIN
LT3506
(3b)
D2
VOUT
C3
VBOOST – VSW VIN
MAX VBOOST 2VIN
VIN
BOOST
GND
SW
VIN
LT3506
(3d)
3506 F03
VOUT
MAX VBOOST – VSW VINB
MAX VBOOST VINB
MINIMUM VALUE FOR VINB = VIN + 3V
VINB
>VIN + 3V
D2
VIN
BOOST
GND
SW
VIN
LT3506
(3c)
VOUT
VBOOST – VSW VINB
MAX VBOOST VINB + VIN
MINIMUM VALUE FOR VINB = 3V
D2
VINB > 3V
C3
Figure 3. Generating the Boost Voltage
APPLICATIONS INFORMATION
相關PDF資料 |
PDF描述 |
|---|---|
| LT3506IDHD | 3.6 A SWITCHING REGULATOR, 650 kHz SWITCHING FREQ-MAX, PDSO16 |
| LT3507AIUHF#TRPBF | SWITCHING REGULATOR, PQCC38 |
| LT3507AEFE#TRPBF | SWITCHING REGULATOR, PDSO38 |
| LT3507AHUHF#TRPBF | SWITCHING REGULATOR, PQCC38 |
| LT3507AHFE#PBF | SWITCHING REGULATOR, PDSO38 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LT3506IDHD-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Monolithic 1.6A Step-Down Switching Regulator |
| LT3506IFE | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Monolithic 1.6A Step-Down Switching Regulator |
| LT3506IFE#PBF | 功能描述:IC REG BUCK ADJ 1.6A DL 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 設計資源: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:- 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) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT3506IFE#TRPBF | 功能描述:IC REG BUCK ADJ 1.6A DL 16TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 設計資源: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:- 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) 供應商設備封裝:TSOT-23-5 其它名稱:AS1323-BTTT-30CT |
| LT3506IFE-PBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Monolithic 1.6A Step-Down Switching Regulator |
發(fā)布緊急采購，3分鐘左右您將得到回復。