- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄44991 > LTC3535EDD#PBF (LINEAR TECHNOLOGY CORP) SWITCHING REGULATOR, PDSO12 PDF資料下載
參數(shù)資料
| 型號： | LTC3535EDD#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | SWITCHING REGULATOR, PDSO12 |
| 封裝： | 3 X 3 MM, 0.75 MM HEIGHT, LEAD FREE, PLASTIC, DFN-12 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 249K |
| 代理商： | LTC3535EDD#PBF |
LTC3535
9
3535f
OPERATION
The LTC3535 is a dual channel 1MHz synchronous boost
converter housed in a 12-lead 3mm
× 3mm DFN package.
Each channel is identical and fully independent. They can
operate from the same source, or from different voltage
sources.
In addition, their output voltages can be tied together
to allow operation of a single output from two different
input sources. However, note that the two channels are
not designed to current share, so if both input voltages
are present either one may be supplying the load.
The following description of operation applies to each
channel. Note that references to VIN or VOUT apply to the
corresponding channel.
With a guaranteed ability to start up and operate from
inputs less than 0.8V, each channel features xed fre-
quency, current mode PWM control for exceptional line
and load regulation. The current mode architecture with
adaptive slope compensation provides excellent transient
load response, requiring minimal output ltering. Internal
soft-start and internal loop compensation simplies the
design process while minimizing the number of external
components.
With its low RDS(ON)andlowgatechargeinternalN-channel
MOSFET switch and P-channel MOSFET synchronous
rectier, the LTC3535 achieves high efciency over a wide
range of load currents. Burst Mode operation maintains
high efciency at very light loads, reducing the quiescent
current to just 9μA per channel. Operation can be best
understood by referring to the Block Diagram.
LOW VOLTAGE START-UP
The LTC3535 includes an independent start-up oscillator
designed to start up at an input voltage of 0.68V (typical).
Soft-start and inrush current limiting are provided during
start-up, as well as normal mode.
When either VIN or VOUT for a given channel exceeds 1.3V
typical, the channel enters normal operating mode. When
the output voltage exceeds the input by 0.24V, the channel
powers itself from VOUT instead of VIN. At this point the
internal circuitry has no dependency on the VIN input volt-
age, eliminating the requirement for a large input capacitor.
The input voltage can drop as low as 0.5V. The limiting
factor for the application becomes the availability of the
power source to supply sufcient energy to the output at
low voltages, and maximum duty cycle, which is clamped at
90% typical. Note that at low input voltages, small voltage
drops due to series resistance become critical, and greatly
limit the power delivery capability of the converter.
LOW NOISE FIXED FREQUENCY OPERATION
Soft-Start
The LTC3535 contains internal circuitry to provide soft-
start operation. The soft-start circuitry slowly ramps the
peak inductor current from zero to its peak value of 750mA
(typical) in approximately 0.5ms, allowing start-up into
heavy loads. The soft-start circuitry is reset in the event
of a shutdown command or a thermal shutdown.
(Refer to Block Diagram)
相關PDF資料 |
PDF描述 |
|---|---|
| LTC3538EDCB#PBF | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC3538EDCB | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC3538EDCB#TR | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
| LTC3541EDD-2 | 1.25 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO10 |
| LTC3541EDD-2#TR | 1.25 A SWITCHING REGULATOR, 2700 kHz SWITCHING FREQ-MAX, PDSO10 |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3535EDD-TRPBF | 制造商:LINER 制造商全稱:Linear Technology 功能描述:Dual Channel 550mA 1MHz Synchronous Step-Up DC/DC Converter |
| LTC3536EDD#PBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 12DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 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:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3536EDD#TRPBF | 功能描述:IC REG BUCK BOOST SYNC ADJ 12DFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 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:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
| LTC3536EMSE#PBF | 功能描述:IC REG BUCK BST SYNC ADJ 12MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:250 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V 輸入電壓:2.05 V ~ 6 V PWM 型:電壓模式 頻率 - 開關:2MHz 電流 - 輸出:500mA 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:6-UFDFN 包裝:帶卷 (TR) 供應商設備封裝:6-SON（1.45x1） 產(chǎn)品目錄頁面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3536EMSE#TRPBF | 功能描述:IC REG BUCK BST SYNC ADJ 12MSOP RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開關穩(wěn)壓器 系列:- 標準包裝:2,500 系列:- 類型:降壓（降壓） 輸出類型:固定 輸出數(shù):1 輸出電壓:1.2V，1.5V，1.8V，2.5V 輸入電壓:2.7 V ~ 20 V PWM 型:- 頻率 - 開關:- 電流 - 輸出:50mA 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:10-TFSOP，10-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:帶卷 (TR) 供應商設備封裝:10-MSOP 裸露焊盤 |
發(fā)布緊急采購，3分鐘左右您將得到回復。