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参数资料
| 型号： | LTC3414MPFE#TRPBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 4A 20TSSOP |
| 标准包装： | 2,500 |
| 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： | 300kHz ~ 4MHz |
| 电流 - 输出： | 4A |
| 同步整流器： | 是 |
| 工作温度： | -55°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TSSOP-EP |
LTC3414
4A, 4MHz, Monolithic
Synchronous Step-Down Regulator
FEATURES
DESCRIPTIO
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High Efficiency: Up to 95%
4A Output Current
Low Quiescent Current: 64 μ A
Low R DS(ON) Internal Switch: 67m Ω
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
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
APPLICATIO S
operation or forced continuous operation. Forced continu-
ous operation reduces noise and RF interference while
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Point-of-Load Regulation
Notebook Computers
Portable Instruments
Distributed Power Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
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.
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 APPLICATIO
V IN
2.7V TO 5.5V
22 μ F
100
LTC3414 Efficiency Curve
PV IN SV IN
95
Burst Mode OPERATION
2.2M
1000pF
294k
R ITH *
RT PGOOD
LTC3414
SW
RUN/SS PGND
I TH
SGND
0.47 μ H
V OUT
2.5V AT 4A
C OUT *
90
85
80
75
70
FORCED
CONTINUOUS
470pF
SYNC/MODE
V FB
3414 F01a
65
60
75k
110k
392k
55
50
0.001
0.01
0.1 1.0
10
*Burst Mode OPERATION: C OUT = 470 μ F SANYO POSCAP 4TPB470M, R ITH = 20k
FORCED CONTINUOUS: C OUT = (2) 100 μ F TDKC4532X5ROJ107M, R ITH = 12.1k
LOAD CURRENT (A)
3414 F01b
Figure 1. 2.5V/4A Step-Down Regulator
3414fb
1
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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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