參數(shù)資料
型號(hào)： LT3430IFE-1
廠商： LINEAR TECHNOLOGY CORP
元件分類(lèi)： 穩(wěn)壓器
英文描述： 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16
封裝： 4.40 MM, PLASTIC, TSSOP-16
文件頁(yè)數(shù)： 9/28頁(yè)
文件大?。?/td> 321K
代理商： LT3430IFE-1
LT3430/LT3430-1
17
34301fa
LAYOUT CONSIDERATIONS
As with all high frequency switchers, when considering
layout, care must be taken in order to achieve optimal
electrical, thermal and noise performance. For maximum
efciency, switch rise and fall times are typically in the
nanosecond range. To prevent noise both radiated and
conducted, the high speed switching current path, shown
in Figure 5, must be kept as short as possible. This is
implemented in the suggested layout of Figure 6. Shorten-
ing this path will also reduce the parasitic trace inductance
of approximately 25nH/inch. At switch off, this parasitic
inductance produces a yback spike across the LT3430/
LT3430-1 switch. When operating at higher currents and
input voltages, with poor layout, this spike can generate
voltages across the LT3430/LT3430-1 that may exceed its
absolute maximum rating. A ground plane should always
be used under the switcher circuitry to prevent interplane
coupling and overall noise.
APPLICATIONS INFORMATION
3430 F05
5V
L1
VIN
LT3430/
LT3430-1
D1
C3
C1
HIGH
FREQUENCY
CIRCULATING
PATH
LOAD
GND
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SHDN
SYNC
GND
BOOST
VIN
SW
PLACE FEEDTHROUGH AROUND
GROUND PINS (4 CORNERS) FOR
GOOD THERMAL CONDUCTIVITY
LT3430/
LT3430-1
C3
C1
D1
C2
D2
R2
R1
3430 F06
CFB
CF
RC
CC
L1
MINIMIZE
LT3430/LT3430-1
C3-D1 LOOP
VIN PINS 3 AND 4
ARE SHORTED TOGETHER.
SW PINS 2 AND 5 ARE ALSO
SHORTED TOGETHER (USING
AVAILABLE SPACE UNDERNEATH
THE DEVICE BETWEEN PINS AND
GND PLANE)
GND
BIAS
FB
VC
CONNECT TO
GROUND PLANE
KELVIN SENSE
VOUT
KEEP FB AND VC COMPONENTS
AWAY FROM HIGH FREQUENCY,
HIGH CURRENT COMPONENTS
SOLDER THE EXPOSED PAD
(PIN 17) TO THE ENTIRE COPPER
GROUND PLANE UNDERNEATH
THE DEVICE. NOTE: THE BOOST
AND BIAS COPPER TRACES ARE
ON A SEPARATE LAYER FROM
THE GROUND PLANE
GND
VOUT
VIN
GND
1
2
3
4
5
6 BOOST
VIN
SW
LT3430/
LT3430-1
Figure 5. High Speed Switching Path
Figure 6. Suggested Layout
相關(guān)PDF資料
PDF描述
LT3430EFE-1 6.5 A SWITCHING REGULATOR, 120 kHz SWITCHING FREQ-MAX, PDSO16
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
LT3430IFE-1#PBF 功能描述:IC REG BUCK ADJ 3A 16TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 產(chǎn)品培訓(xùn)模塊:MIC23xxx HyperLight Load™ Regulators 標(biāo)準(zhǔn)包裝:5,000 系列:HyperLight Load® 類(lèi)型:降壓（降壓） 輸出類(lèi)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(kāi)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(lèi)型:表面貼裝 封裝/外殼:8-VFDFN 裸露焊盤(pán)，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(yè)面:1094 (CN2011-ZH PDF) 其它名稱:576-3303-2
LT3430IFE-1#TRPBF 功能描述:IC REG BUCK ADJ 3A 16TSSOP RoHS:是 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:升壓（升壓） 輸出類(lèi)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(kāi)關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類(lèi)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
LT3430IFEPBF 制造商:Linear Technology 功能描述:Sw. Regulator 3A 200kHz 60V TSSOP16EP
LT3431 制造商:LINER 制造商全稱:Linear Technology 功能描述:High Voltage, 3A,500kHz Step-Down Switching Regulator
LT3431EFE 功能描述:IC REG BUCK ADJ 3A 16TSSOP RoHS:否 類(lèi)別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 設(shè)計(jì)資源:Design Support Tool 標(biāo)準(zhǔn)包裝:1 系列:- 類(lèi)型:升壓（升壓） 輸出類(lèi)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(kāi)關(guān):- 電流 - 輸出:100mA 同步整流器:是 工作溫度:-40°C ~ 85°C 安裝類(lèi)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
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