- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄98003 > LTC3414MPFE#PBF (LINEAR TECHNOLOGY CORP) 9.5 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO20 PDF資料下載
參數(shù)資料
| 型號： | LTC3414MPFE#PBF |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | 9.5 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封裝： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件頁數(shù)： | 13/16頁 |
| 文件大?。?/td> | 268K |
| 代理商： | LTC3414MPFE#PBF |
LTC3414
6
3414fb
Main Control Loop
The LTC3414 is a monolithic, constant-frequency, cur-
rent-mode step-down DC/DC converter. During normal
operation, the internal top power switch (P-channel MOS-
FET) is turned on at the beginning of each clock cycle.
Current in the inductor increases until the current com-
parator trips and turns off the top power MOSFET. The
peak inductor current at which the current comparator
shuts off the top power switch is controlled by the voltage
on the ITH pin. The error amplifier adjusts the voltage on
the ITH pin by comparing the feedback signal from a
resistor divider on the VFB pin with an internal 0.8V
reference. When the load current increases, it causes a
reduction in the feedback voltage relative to the reference.
The error amplifier raises the ITH voltage until the average
inductor current matches the new load current. When the
top power MOSFET shuts off, the synchronous power
switch (N-channel MOSFET) turns on until either the
bottom current limit is reached or the beginning of the next
clock cycle. The bottom current limit is set at –5A for
forced continuous mode and 0A for Burst Mode operation.
The operating frequency is externally set by an external
resistor connected between the RT pin and ground. The
practical switching frequency can range from 300kHz to
4MHz.
Overvoltage and undervoltage comparators will pull the
PGOOD output low if the output voltage comes out of
regulation by
±7.5%. In an overvoltage condition, the top
power MOSFET is turned off and the bottom power MOS-
FET is switched on until either the overvoltage condition
clears or the bottom MOSFET’s current limit is reached.
Forced Continuous Mode
Connecting the SYNC/MODE pin to SVIN will disable Burst
Mode operation and force continuous current operation.
At light loads, forced continuous mode operation is less
efficient than Burst Mode operation, but may be desirable
in some applications where it is necessary to keep switch-
OPERATIO
U
BLOCK DIAGRA
W
–
+
–
+
–
+
–
+
–
+
–
+
–
+
16
19
17
4
2
5
18
7
14
SLOPE
COMPENSATION
RECOVERY
SLOPE
COMPENSATION
VOLTAGE
REFERENCE
OSCILLATOR
LOGIC
3
0.74V
0.86V
RUN
13
12
9
8
SVIN
SGND
21
EXPOSED PAD
ITH
PVIN
PMOS CURRENT
COMPARATOR
BCLAMP
VFB
RUN/SS
PGOOD
RT
SYNC/MODE
PGND
CURRENT
REVERSAL
COMPARTOR
NMOS CURRENT
COMPARATOR
BURST
COMPARATOR
ERROR
AMPLIFIER
SW
10
11
20
1
3414 BD
SYNC/MODE
+
V
0.8V
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LTC3522EUD#TR | 0.85 A DUAL SWITCHING CONTROLLER, 1330 kHz SWITCHING FREQ-MAX, PQCC16 |
| LTC3525LESC6-3#PBF | 0.45 A SWITCHING REGULATOR, PDSO6 |
| LTC3526LEDC | SWITCHING CONTROLLER, 1250 kHz SWITCHING FREQ-MAX, PDSO6 |
| LTC3531ES6-3.3#PBF | 0.46 A SWITCHING REGULATOR, PDSO6 |
| LTC3538EDCB#TRM | 0.8 A SWITCHING REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3415 | 制造商:LINER 制造商全稱:Linear Technology 功能描述:7A, PolyPhase Synchronous Step-Down Regulator |
| LTC3415EUHF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.5V to 5.5V 38-Pin QFN EP |
| LTC3415EUHF#PBF | 功能描述:IC REG BUCK SYNC ADJ 7A 38QFN 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:PolyPhase® 標(biāo)準(zhǔn)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(guān):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(yīng)商設(shè)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 |
| LTC3415EUHF#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.5V to 5.5V 38-Pin QFN EP T/R |
| LTC3415EUHF#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 7A 38QFN 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:PolyPhase® 設(shè)計資源:Design Support Tool 標(biāo)準(zhǔn)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(xì)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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。