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LT1945EMS#PBF PDF预览

LT1945EMS#PBF

更新时间: 2024-12-01 13:09:39
品牌 Logo 应用领域
凌特 - Linear 转换器
页数 文件大小 规格书
8页 144K
描述
LT1945 - Dual Micropower DC/DC Converter with Positive and Negative Outputs; Package: MSOP; Pins: 10; Temperature Range: -40°C to 85°C

LT1945EMS#PBF 技术参数

是否Rohs认证:符合生命周期:Transferred
零件包装代码:MSOP包装说明:TSSOP, TSSOP10,.19,20
针数:10Reach Compliance Code:compliant
ECCN代码:EAR99HTS代码:8542.39.00.01
风险等级:2.82Samacsys Confidence:4
Samacsys Status:ReleasedSamacsys PartID:361912
Samacsys Pin Count:10Samacsys Part Category:Integrated Circuit
Samacsys Package Category:Small Outline PackagesSamacsys Footprint Name:MS10(MSOP)_2
Samacsys Released Date:2016-08-11 14:56:49Is Samacsys:N
模拟集成电路 - 其他类型:DUAL SWITCHING CONTROLLER控制模式:CURRENT-MODE
控制技术:CONSTANT OFF TIME最大输入电压:12 V
最小输入电压:1.2 V标称输入电压:1.2 V
JESD-30 代码:S-PDSO-G10JESD-609代码:e3
长度:3 mm湿度敏感等级:1
功能数量:1端子数量:10
最高工作温度:70 °C最低工作温度:
最大输出电流:0.4 A封装主体材料:PLASTIC/EPOXY
封装代码:TSSOP封装等效代码:TSSOP10,.19,20
封装形状:SQUARE封装形式:SMALL OUTLINE, THIN PROFILE, SHRINK PITCH
峰值回流温度(摄氏度):260认证状态:Not Qualified
座面最大高度:1.1 mm子类别:Switching Regulator or Controllers
表面贴装:YES切换器配置:BOOST
技术:BIPOLAR温度等级:COMMERCIAL
端子面层:Matte Tin (Sn)端子形式:GULL WING
端子节距:0.5 mm端子位置:DUAL
处于峰值回流温度下的最长时间:30宽度:3 mm
Base Number Matches:1

LT1945EMS#PBF 数据手册

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LT1945  
Dual Micropower DC/DC  
Converter with Positive and  
Negative Outputs  
U
FEATURES  
DESCRIPTIO  
The LT®1945 is a dual micropower DC/DC converter in a  
10-pin MSOP package. Each converter is designed with a  
350mA current limit and an input voltage range of 1.2V to  
15V, making the LT1945 ideal for a wide variety of appli-  
cations. Both converters feature a quiescent current of  
only 20µA at no load, which further reduces to 0.5µA in  
shutdown.Acurrentlimited,fixedoff-timecontrolscheme  
conserves operating current, resulting in high efficiency  
over a broad range of load current. The 36V switch allows  
high voltage outputs up to ±34V to be easily generated  
without the use of costly transformers. The LT1945’s low  
off-time of 400ns permits the use of tiny, low profile  
inductors and capacitors to minimize footprint and cost in  
space-conscious portable applications.  
Generates Well-Regulated Positive and  
Negative Outputs  
Low Quiescent Current:  
20  
µ
A in Active Mode (per Converter)  
<1  
µA in Shutdown Mode  
Operates with VIN as Low as 1.2V  
Low VCESAT Switch: 250mV at 300mA  
Uses Small Surface Mount Components  
High Output Voltage: Up to ±34V  
Tiny 10-Pin MSOP Package  
U
APPLICATIO S  
Small TFT LCD Panels  
Handheld Computers  
Battery Backup  
Digital Cameras  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
U
TYPICAL APPLICATIO  
Dual Output (+12V, –20V) Converter  
C4  
0.1µF  
L1  
10µH  
D1  
V
IN  
–20V  
10mA  
Efficiency at VIN = 3.6V  
2.7V  
TO 5V  
8
10  
90  
100pF  
365k  
V
SW1  
IN  
85  
2
4
1
5
+12V OUTPUT  
SHDN1  
NFB1  
80  
C1  
4.7µF  
C2  
1µF  
LT1945  
D2  
–20V OUTPUT  
75  
70  
65  
60  
SHDN2  
FB2  
24.9k  
GND PGND PGND SW2  
3
7
9
6
115k  
55  
C3  
1µF  
4.7pF  
D3  
1M  
50  
L2  
10µH  
0.1  
1
10  
100  
12V  
20mA  
1945 TA01  
LOAD CURRENT (mA)  
1945 TA01a  
C1: TAIYO YUDEN JMK212BJ475  
C2, C3: TAIYO YUDEN TMK316BJ105  
C4: TAIYO YUDEN EMK107BJ104  
D1, D2, D3: ZETEX ZHCS400  
L1, L2: MURATA LQH3C100  
1945f  
1

LT1945EMS#PBF 替代型号

型号 品牌 替代类型 描述 数据表
LT1945EMS#TRPBF Linear

完全替代

LT1945 - Dual Micropower DC/DC Converter with Positive and Negative Outputs; Package: MSOP
LT1945IMS#PBF Linear

类似代替

LT1945 - Dual Micropower DC/DC Converter with Positive and Negative Outputs; Package: MSOP

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