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参数资料
| 型号： | LT1961EMS8E |
| 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 |
|---|---|
| LT1961EMS8E#PBF | 功能描述:IC REG BOOST ADJ 1.5A 8MSOP 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 |
| LT1961EMS8E#TR | 功能描述:IC REG BOOST ADJ 1.5A 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| LT1961EMS8E#TRPBF | 功能描述:IC REG BOOST ADJ 1.5A 8MSOP 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:500 系列:- 类型:切换式电容器（充电泵），反相 输出类型:固定 输出数:1 输出电压:-3V 输入电压:2.3 V ~ 5.5 V PWM 型:Burst Mode? 频率 - 开关:900kHz 电流 - 输出:100mA 同步整流器:无 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SOT-23-6 细型，TSOT-23-6 包装:带卷 (TR) 供应商设备封装:TSOT-23-6 其它名称:LTC1983ES6-3#TRMTR |
| LT1961EMS8EPBF | 制造商:Linear Technology 功能描述:DC-DC Converter Step-Up 3-25V MSOP8EP |
| LT1961EMS8ETR | 制造商:LINER 制造商全称:Linear Technology 功能描述:1.5A, 1.25MHz Step-Up Switching Regulator |
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