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参数资料
| 型号： | LTC3418EUHF#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 8A 38QFN |
| 标准包装： | 52 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 5 V |
| 输入电压： | 2.25 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 8A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 38-WFQFN 裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 38-QFN（5x7） |
| 产品目录页面： | 1334 (CN2011-ZH PDF) |
LTC3418
8A, 4MHz, Monolithic
Synchronous Step-Down
Regulator
FEATURES
DESCRIPTION
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High Ef?ciency: Up to 95%
8A Output Current
2.25V to 5.5V Input Voltage Range
Low R DS(ON) Internal Switch: 35mΩ
Tracking Input to Provide Easy Supply Sequencing
Programmable Frequency: 300kHz to 4MHz
0.8V ±1% Reference Allows Low Output Voltage
Quiescent Current: 380μA
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 Pro?le (0.75mm) Thermally Enhanced
QFN (5mm × 7mm) Package
The LTC ? 3418 is a high ef ?ciency, 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 ef ?ciency 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 con?gured for either Burst Mode
operation or forced continuous operation. Forced con-
tinuous operation reduces noise and RF interference
while Burst Mode operation provides high ef ?ciency by
reducing gate charge losses at light loads. In Burst Mode
Microprocessor, DSP and Memory Supplies
Distributed 2.5V, 3.3V and 5V Power Systems
Automotive Applications
Point of Load Regulation
Notebook Computers
APPLICATIONS
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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.
L , LT, LTC and LTM 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.
TYPICAL APPLICATION
2.5V/8A Step-Down Regulator
Ef ?ciency and Power Loss vs Load Current
100
100000
V IN
2.8V TO 5.5V
SV IN TRACK PV IN
C IN
47μF
× 4
0.2μH
V OUT
90
80
EFFICIENCY
10000
2.2M
1000pF
30.1k
R T SW
I TH SGND
LTC3418
PGOOD
RUN/SS PGND
C OUT
100μF
× 2
2.5V
8A
70
60
50
POWER LOSS
1000
100
4.99k
SYNC/MODE V FB
40
10
820pF
332Ω
1.69k
4.32k
3418 TA01a
30
20
0.01
0.1 1
V IN = 3.3V
V OUT = 2.5V
10
1
LOAD CURRENT (A)
3418 TA01b
3418fb
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3419 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Monolithic 600mA Synchronous Step-Down Regulator |
| LTC3419EDD | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Monolithic 600mA Synchronous Step-Down Regulator |
| LTC3419EDD#PBF | 功能描述:IC REG BUCK SYNC ADJ .6A DL 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LTC3419EDD#TRPBF | 功能描述:IC REG BUCK SYNC ADJ .6A DL 8DFN RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:升压（升压） 输出类型:可调式 输出数:1 输出电压:1.24 V ~ 30 V 输入电压:1.5 V ~ 12 V PWM 型:电流模式，混合 频率 - 开关:600kHz 电流 - 输出:500mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 包装:带卷 (TR) 供应商设备封装:8-SOIC |
| LTC3419EDD-1 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Dual Monolithic 600mA Synchronous Step-Down Regulator |
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