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參數(shù)資料
| 型號(hào)： | LTC3418 |
| 廠商： | Linear Technology Corporation |
| 英文描述： | 3.3-V CMOS 18-Bit Universal Bus Driver with 3-State Outputs 56-TVSOP -40 to 85 |
| 中文描述： | 8A條，4MHz的，單片同步降壓型穩(wěn)壓器 |
| 文件頁(yè)數(shù)： | 1/20頁(yè) |
| 文件大?。?/td> | 291K |
| 代理商： | LTC3418 |
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LTC3418
3418f
8A, 4MHz, Monolithic
Synchronous Step-Down
Regulator
■
High Efficiency: Up to 95%
■
8A Output Current
■
2.25V to 5.5V Input Voltage Range
■
Low R
DS(ON)
Internal Switch: 35m
■
Tracking Input to Provide Easy Supply Sequencing
■
Programmable Frequency: 300kHz to 4MHz
■
0.8V
±
1% Reference Allows Low Output Voltage
■
Quiescent Current: 380
μ
A
■
Selectable Forced Continuous/Burst Mode
Operation
with Adjustable Burst Clamp
■
Synchronizable Switching Frequency
■
Low Dropout Operation: 100% Duty Cycle
■
Power Good Output Voltage Monitor
■
Overtemperature Protected
■
38-Lead Low Profile (0.75mm) Thermally Enhanced
QFN (5mm
×
7mm) Package
■
Microprocessor, DSP and Memory Supplies
■
Distributed 2.5V, 3.3V and 5V Power Systems
■
Automotive Applications
■
Point of Load Regulation
■
Notebook Computers
DESCRIPTIOU
The LTC
3418 is a high efficiency, monolithic synchro-
nous step-down DC/DC converter utilizing a constant
frequency, current mode architecture. It operates from an
input voltage range of 2.25V to 5.5V and provides a
regulated output voltage from 0.8V to 5V while delivering
up to 8A of output current. The internal synchronous
power switch increases efficiency and eliminates the need
for an external Schottky diode. Switching frequency is set
by an external resistor or can be synchronized to an
external clock. OPTI-LOOP
compensation allows the
transient response to be optimized over a wide range of
loads and output capacitors.
The LTC3418 can be configured for either Burst Mode
operation or forced continuous operation. Forced continu-
ous operation reduces noise and RF interference while
Burst Mode operation provides high efficiency by reduc-
ing gate charge losses at light loads. In Burst Mode
operation, external control of the burst clamp level allows
the output voltage ripple to be adjusted according to the
requirements of the application. A tracking input in the
LTC3418 allows for proper sequencing with respect to
another power supply.
, LTC and LT are registered trademarks of Linear Technology Corporation.
Burst Mode and OPTI-LOOP are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners.
Protected by U.S. Patents, including 5481178, 6580258, 6304066, 6127815, 6498466, 6611131,
6724174.
FEATURES
APPLICATIU
TYPICAL APPLICATIO
U
2.5V/8A Step-Down Regulator
Efficiency and Power Loss vs Load Current
SV
IN
TRACK
R
T
LTC3418
C
IN
100
μ
F
0.2
μ
H
RUN/SS
I
TH
SYNC/MODE V
FB
PGOOD
PGND
SGND
SW
332
PV
IN
820pF
3418 TA01a
1000pF
C
OUT
100
μ
F
×
2
V
2.5V
8A
4.32k
1.69k
30.1k
2.2M
V
IN
2.8V TO 5.5V
4.99k
LOAD CURRENT (A)
0.01
60
E
P
80
100
0.1
1
10
3418 TA01b
40
50
70
90
30
20
1000
100000
100
10000
10
1
EFFICIENCY
POWER LOSS
V
IN
= 3.3V
V
OUT
= 2.5V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LTC3418EUHF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.25V to 5.5V 38-Pin QFN EP |
| LTC3418EUHF#PBF | 功能描述:IC REG BUCK SYNC ADJ 8A 38QFN RoHS:是 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - DC DC 開(kāi)關(guān)穩(wěn)壓器 系列:- 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(kāi)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(yè)面:1032 (CN2011-ZH PDF) 其它名稱:296-25628-2 |
| LTC3418EUHF#PBF | 制造商:Linear Technology 功能描述:DC/DC Converter IC |
| LTC3418EUHF#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.25V to 5.5V 38-Pin QFN EP T/R |
| LTC3418EUHF#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 8A 38QFN RoHS:是 類別: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(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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