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参数资料
| 型号： | LT1961IMS8E#PBF |
| 厂商： | Linear Technology |
| 文件页数： | 1/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BOOST ADJ 1.5A 8MSOP |
| 标准包装： | 50 |
| 类型： | 升压（升压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 1.2 V ~ 35 V |
| 输入电压： | 3 V ~ 25 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1.25MHz |
| 电流 - 输出： | 1.5A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 |
| 包装： | 管件 |
| 供应商设备封装： | 8-MSOP-EP |
LT1961
1.5A, 1.25MHz Step-Up
Switching Regulator
FEATURES
DESCRIPTIO
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1.5A Switch in a Small MSOP Package
Constant 1.25MHz Switching Frequency
Wide Operating Voltage Range: 3V to 25V
High Efficiency 0.2 Ω Switch
1.2V Feedback Reference Voltage
± 2% Overall Output Voltage Tolerance
Uses Low Profile Surface Mount External
Components
Low Shutdown Current: 6 μ A
Synchronizable from 1.5MHz to 2MHz
Current-Mode Loop Control
Constant Maximum Switch Current Rating at All Duty
Cycles*
Thermally Enhanced Exposed Pad 8-Lead Plastic
MSOP Package
The LT ? 1961 is a 1.25MHz monolithic boost switching
regulator. A high efficiency 1.5A, 0.2 Ω switch is included
on the die together with all the control circuitry required to
complete a high frequency, current-mode switching regu-
lator. Current-mode control provides fast transient re-
sponse and excellent loop stability.
New design techniques achieve high efficiency at high
switching frequencies over a wide operating voltage range.
A low dropout internal regulator maintains consistent
performance over a wide range of inputs from 24V sys-
tems to Li-Ion batteries. An operating supply current of
1mA maintains high efficiency, especially at lower output
currents. Shutdown reduces quiescent current to 6 μ A.
Maximum switch current remains constant at all duty
cycles. Synchronization allows an external logic level
APPLICATIO S
signal to increase the internal oscillator from 1.5MHz to
2MHz.
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DSL Modems
Portable Computers
Battery-Powered Systems
Distributed Power
The LT1961 is available in an exposed pad, 8-pin MSOP
package. Full cycle-by-cycle switch current limit protec-
tion and thermal shutdown are provided. High frequency
operation allows the reduction of input and output filtering
components and permits the use of chip inductors.
, LT, LTC and LTM are registered trademarks of Linear Technology Corporation.
All other trademarks are the property of their respective owners. *Patent Pending
TYPICAL APPLICATIO
5V to 12V Boost Converter
6.8 μ H
90
85
Efficiency vs Load Current
V IN
5V
2.2 μ F
CERAMIC
1
OPEN
OR 5
HIGH
= ON
V IN
SHDN
SYNC
8
LT1961
GND
3,4
V C
7
2
V SW
6
FB
6800pF
6.8k
UPS120
100pF
90.9k
10k
1%
V OUT
12V
0.5A*
10 μ F
CERAMIC
80
75
70
65
60
0
100
V IN = 5V
V OUT = 12V
200 300 400 500
*MAXIMUM OUTPUT CURRENT IS SUBJECT TO THERMAL DERATING.
1961 TA01
LOAD CURRENT (mA)
1961 TA01a
1961fa
1
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1961IMS8ETR | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, 1.25MHz Step-Up Switching Regulator |
| LT1961IMS8ETRPBF | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, 1.25MHz Step-Up Switching Regulator |
| LT1962 | 制造商:LINER 制造商全称:Linear Technology 功能描述:Micropower Low Dropout Regulators with Shutdown |
| LT1962EMS8 | 功能描述:IC REG LDO ADJ .3A 8-MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 产品培训模块:More Information on LDOs 标准包装:50 系列:- 稳压器拓扑结构:正，固定式 输出电压:3.3V 输入电压:最高 15V 电压 - 压降（标准）:1.1V @ 800mA 稳压器数量:1 电流 - 输出:800mA 电流 - 限制（最小）:800mA 工作温度:0°C ~ 125°C 安装类型:表面贴装 封装/外壳:TO-263-4，D²Pak（3 引线+接片），TO-263AA 供应商设备封装:D2PAK-3 包装:管件 |
| LT1962EMS8#PBF | 功能描述:IC REG LDO ADJ .3A 8-MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - 线性 系列:- 产品培训模块:MIC5365/66 Ultra-small LDO Regulators 标准包装:1 系列:- 稳压器拓扑结构:正，固定式 输出电压:3V 输入电压:最高 5.5V 电压 - 压降（标准）:0.155V @ 150mA 稳压器数量:1 电流 - 输出:150mA 电流 - 限制（最小）:200mA 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:4-UDFN 裸露焊盘，4-TMLF? 供应商设备封装:4-TMLF?（1x1） 包装:Digi-Reel® 其它名称:576-3192-6 |
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