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参数资料
| 型号： | LTC3412AMPFE |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | 6 A SWITCHING REGULATOR, 4000 kHz SWITCHING FREQ-MAX, PDSO16 |
| 封装： | 4.40 MM, PLASTIC, TSSOP-16 |
| 文件页数： | 1/20页 |
| 文件大小： | 316K |
| 代理商： | LTC3412AMPFE |
LTC3412A
3412afe
ApplicAtions
n
Point-of-Load Regulation
n
Notebook Computers
n
Portable Instruments
n
Distributed Power Systems
n
High Efficiency: Up to 95%
n
3A Output Current
n
Low Quiescent Current: 64A
n
Low RDS(ON) Internal Switch: 77mΩ
n
2.25V to 5.5V Input Voltage Range
n
Programmable Frequency: 300kHz to 4MHz
n
±2% Output Voltage Accuracy
n
0.8V Reference Allows Low Output Voltage
n
Selectable Forced Continuous/Burst Mode Operation
with Adjustable Burst Clamp
n
Synchronizable Switching Frequency
n
Low Dropout Operation: 100% Duty Cycle
n
Power Good Output Voltage Monitor
n
Overtemperature Protected
n
Available in 16-Lead Exposed Pad TSSOP and
QFN Packages
typicAl ApplicAtion
Description
3A, 4MHz, Monolithic
Synchronous
Step-Down Regulator
The LTC3412A 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 deliver-
ing up to 3A of output current. The internal synchronous
powerswitchwith77mΩon-resistanceincreasesefficiency
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 LTC3412A can be configured for either Burst Mode
operation or forced continuous operation. Forced continu-
ous operation reduces noise and RF interference while
BurstModeoperationprovideshighefficiencybyreducing
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 application
requirements.
FeAtures
Efficiency and Power Loss
Figure 1. 2.5V/3A Step-Down Regulator
3412A F01a
SYNC/MODE
VFB
PGOOD
SW
PGND
SGND
RT
RUN/SS
ITH
SVIN
PVIN
LTC3412A
294k
22F
COUT
100F
×2
0.47H
VOUT
2.5V AT 3A
VIN
3.3V
1000pF
2.2M
820pF
12.1k
115k
69.8k
392k
LOAD CURRENT (A)
0.01
EFFICIENCY
(%)
POWER
LOSS
(mW)
100
95
90
85
80
75
70
65
60
55
50
100000
10000
1000
100
10
1
0.1
1
10
3412A F01b
EFFICIENCY
POWER LOSS
L
, LT, LTC, LTM, Burst Mode, OPTI-LOOP, Linear Technology and the Linear logo are registered
trademarks and ThinSOT is a trademark 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 |
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| LTC3412AMPFE#PBF | 功能描述:IC REG BUCK SYNC ADJ 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 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 |
| LTC3412AMPFE#TR | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.25V to 5.5V 16-Pin TSSOP EP T/R |
| LTC3412AMPFE#TRPBF | 功能描述:IC REG BUCK SYNC ADJ 3A 16TSSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 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 |
| LTC3412EFE | 功能描述:IC REG BUCK SYNC ADJ 16TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 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 |
| LTC3412EFE#PBF | 功能描述:IC REG BUCK SYNC ADJ 16TSSOP 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 |
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