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参数资料
| 型号： | LTC3412EFE |
| 厂商： | Linear Technology |
| 文件页数： | 1/20页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 16TSSOP |
| 标准包装： | 95 |
| 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： | 2.63 V ~ 5.5 V |
| PWM 型： | 电流模式，混合 |
| 频率 - 开关： | 950kHz |
| 电流 - 输出： | 2.5A |
| 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： | 16-TSSOP（0.173"，4.40mm）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 16-TSSOP-EP |
LTC3412
2.5A, 4MHz, Monolithic
Synchronous Step-Down Regulator
FEATURES
DESCRIPTIO
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High Efficiency: Up to 95%
2.5A Output Current
Low Quiescent Current: 62 μ A
Low R DS(ON) Internal Switches: 85m Ω
Programmable Frequency: 300kHz to 4MHz
No Schottky Diode Required
± 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 Protection
Available in 16-Lead Thermally Enhanced TSSOP
and QFN Packages
The LTC ? 3412 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 2.625V to 5.5V and provides an
adjustable regulated output voltage from 0.8V to 5V while
delivering up to 2.5A of output current. The internal
synchronous power switch with 85m Ω on-resistance
increases efficiency and eliminates the need for an exter-
nal Schottky diode. Switching frequency is set by an
external resistor or can be sychronized 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 opti-
mized over a wide range of loads and output capacitors.
The LTC3412 can be configured for either Burst Mode ?
operation or forced continuous operation. Forced con-
tinuous operation reduces noise and RF interference while
APPLICATIO S
Burst Mode operation provides high efficiency by reduc-
ing gate charge losses at light loads. In Burst Mode
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Portable Instruments
Battery-Powered Equipment
Notebook Computers
Distributed Power Systems
Cellular Telephones
Digital Cameras
operation, external control of the burst clamp level allows
the output voltage ripple to be adjusted according to the
requirements of the application. To further maximize
battery life, the P-channel MOSFET is turned on continu-
ously in dropout (100% duty cycle).
, LT, LTC, LTM, Burst Mode and OPTI-LOOP are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
TYPICAL APPLICATIO
V IN
Efficiency vs Load Current
2.7V TO 5.5V
SV IN
PV IN
22 μ F
100
4.7M
309k
R T
PGOOD
SW
LTC3412
1 μ H
100 μ F
V OUT
2.5V
2.5A
80
Burst Mode OPERATION
RUN/SS
PGND
60
470pF
15k
SGND
FORCED CONTINUOUS
1000pF
100pF
I TH
SYNC/MODE V FB
110k
392k
40
20
75k
3412 F01
0
V IN = 3.3V
V OUT = 2.5V
0.001
0.01
0.1 1
10
LOAD CURRENT (A)
Figure 1. 2.5V, 2.5A Step-Down Regulator
3412 G01
3412fb
1
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相关代理商/技术参数 |
参数描述 |
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| 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 |
| LTC3412EFE#TR | 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#TRPBF | 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:- 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 |
| LTC3412EFEPBF | 制造商:Linear Technology 功能描述:LTC3412 adj 2.5A sync SD dc-dc converter |
| LTC3412EUF | 制造商:Linear Technology 功能描述:Conv DC-DC Single Step Down 2.625V to 5.5V 16-Pin QFN EP |
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