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参数资料
| 型号： | LTC3414MPFE#PBF |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 9.5 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO20 |
| 封装： | 4.40 MM, LEAD FREE, PLASTIC, TSSOP-20 |
| 文件页数： | 1/16页 |
| 文件大小： | 268K |
| 代理商： | LTC3414MPFE#PBF |
LTC3414
1
3414fb
■ Point-of-Load Regulation
■ Notebook Computers
■ Portable Instruments
■ Distributed Power Systems
■ High Efficiency: Up to 95%
■
4A Output Current
■ Low Quiescent Current: 64
μA
■ Low RDS(ON) Internal Switch: 67mΩ
■
Programmable Frequency: 300KHz to 4MHz
■ 2.25V to 5.5V Input Voltage Range
■
±2% Output Voltage Accuracy
■
0.8V Reference Allows Low Output Voltage
■ 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
■ Available in 20-Lead Exposed TSSOP Package
4A, 4MHz, Monolithic
Synchronous Step-Down Regulator
The LTC
3414 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 4A of output current. The internal synchronous
power switch with 67m
Ω on-resistance increases effi-
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. 100% duty cycle
provides low dropout operation extending battery life in
portable systems. OPTI-LOOP
compensation allows the
transient response to be optimized over a wide range of
loads and output capacitors.
The LTC3414 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.
3414 F01a
SYNC/MODE
VFB
PGOOD
SW
PGND
SGND
RT
RUN/SS
ITH
SVIN
PVIN
LTC3414
294k
22
μF
COUT*
0.47
μH
VOUT
2.5V AT 4A
VIN
2.7V TO 5.5V
1000pF
2.2M
470pF
RITH*
75k
110k
392k
*Burst Mode OPERATION: COUT = 470μF SANYO POSCAP 4TPB470M, RITH = 20k
FORCED CONTINUOUS: COUT = (2) 100μF TDKC4532X5ROJ107M, RITH = 12.1k
LTC3414 Efficiency Curve
Figure 1. 2.5V/4A Step-Down Regulator
LOAD CURRENT (A)
EFFICIENCY
(%)
100
95
90
85
80
75
70
65
60
55
50
0.001
0.1
1.0
10
3414 F01b
0.01
Burst Mode OPERATION
FORCED
CONTINUOUS
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
, 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
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LTC3415 | 制造商:LINER 制造商全称: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 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:PolyPhase® 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 |
| 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 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:PolyPhase® 设计资源:Design Support Tool 标准包装:1 系列:- 类型:升压（升压） 输出类型:固定 输出数:1 输出电压:3V 输入电压:0.75 V ~ 2 V PWM 型:- 频率 - 开关:- 电流 - 输出:100mA 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:SOT-23-5 细型，TSOT-23-5 包装:剪切带 (CT) 供应商设备封装:TSOT-23-5 其它名称:AS1323-BTTT-30CT |
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