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LTC1266IS-3.3 PDF预览

LTC1266IS-3.3

更新时间： 2024-02-11 20:32:14
品牌 Logo 应用领域
凌特 - Linear 稳压器开关式稳压器或控制器电源电路开关式控制器光电二极管
页数 文件大小 规格书
20页 246K
描述
Synchronous Regulator Controller for N- or P-Channel MOSFETs

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LTC1266IS-3.3 技术参数

是否Rohs认证： 符合生命周期：Transferred
零件包装代码：SOIC包装说明：SOP, SOP16,.25
针数：16Reach Compliance Code：compliant
ECCN代码：EAR99HTS代码：8542.39.00.01
风险等级：5.07模拟集成电路 - 其他类型：SWITCHING CONTROLLER
控制模式：CURRENT-MODE控制技术：CONSTANT OFF TIME
最大输入电压：18 V最小输入电压：3.5 V
标称输入电压：10 VJESD-30 代码：R-PDSO-G16
JESD-609代码：e3长度：9.9 mm
湿度敏感等级：1功能数量：1
端子数量：16最高工作温度：85 °C
最低工作温度：-40 °C最大输出电流：0.05 A
封装主体材料：PLASTIC/EPOXY封装代码：SOP
封装等效代码：SOP16,.25封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：250
认证状态：Not Qualified座面最大高度：1.75 mm
子类别：Switching Regulator or Controllers表面贴装：YES
切换器配置：PUSH-PULL最大切换频率：400 kHz
技术：CMOS温度等级：INDUSTRIAL
端子面层：Matte Tin (Sn)端子形式：GULL WING
端子节距：1.27 mm端子位置：DUAL
处于峰值回流温度下的最长时间：NOT SPECIFIED宽度：3.9 mm
Base Number Matches：1

LTC1266IS-3.3 数据手册

 浏览型号LTC1266IS-3.3的Datasheet PDF文件第2页浏览型号LTC1266IS-3.3的Datasheet PDF文件第3页浏览型号LTC1266IS-3.3的Datasheet PDF文件第4页浏览型号LTC1266IS-3.3的Datasheet PDF文件第5页浏览型号LTC1266IS-3.3的Datasheet PDF文件第6页浏览型号LTC1266IS-3.3的Datasheet PDF文件第7页 
LTC1266  
LTC1266-3.3/LTC1266-5  
Synchronous Regulator  
Controller for  
N- or P-Channel MOSFETs  
U
FEATURES  
DESCRIPTIO  
TheLTC®1266seriesisafamilyofsynchronousswitching  
regulator controllers featuring automatic Burst ModeTM  
operation to maintain high efficiencies at low output  
currents. These devices drive external power MOSFETs at  
switching frequencies up to 400kHz using a constant off-  
time current mode architecture providing constant ripple  
current in the inductor. They can drive either an N-channel  
or a P-channel topside MOSFET.  
■
Ultrahigh Efficiency: Over 95% Possible  
■
Drives N-Channel MOSFET for High Current or  
P-Channel MOSFET for Low Dropout  
■
Pin Selectable Burst Mode Operation  
■
1% Output Accuracy (LTC1266A)  
■
Pin Selectable Phase of Topside Driver for Boost  
or Step-Down Operation  
■
Wide VIN Range: 3.5V to 20V  
■
On-Chip Low-Battery Detector  
The operating current level is user-programmable via an  
external current sense resistor. Wide input supply range  
allows operation from 3.5V to 18V (20V maximum).  
Constantoff-timearchitectureprovideslowdropoutregu-  
lation limited only by the RDS(ON) of the topside MOSFET  
(when using the P-channel) and the resistance of the  
inductor and current sense resistor.  
■
High Efficiency Maintained Over Large Current Range  
■
Low 170µA Standby Current at Light Loads  
■
Current Mode Operation for Excellent Line and Load  
Transient Response  
■
Logic Controlled Micropower Shutdown: IQ < 40µA  
■
Short-Circuit Protection  
■
Synchronous Switching with Nonoverlaping Gate Drives  
The LTC1266 series combines synchronous switching for  
maximum efficiency at high currents with an automatic  
low current operating mode, called Burst Modeoperation,  
which reduces switching losses. Standby power is re-  
duced to only 1mW at VIN = 5V (at IOUT = 0). Load currents  
in Burst Mode operation are typically 0mA to 500mA.  
■
Available in 16-Pin Narrow SO Package  
U
APPLICATIO S  
■
Notebook and Palmtop Computers  
■
Portable Instruments  
■
Cellular Telephones  
, LTC and LT are registered trademarks of Linear Technology Corporation.  
Burst Mode is a trademark of Linear Technology Corporation.  
■
DC Power Distribution Systems  
■
GPS Systems  
U
TYPICAL APPLICATIO  
D2  
MBR0530T1  
LTC1266-3.3 Efficiency  
V
IN  
4V TO 9V  
100  
+
C
IN  
LOW BAT OUT  
V
= 5V  
IN  
100µF  
×2  
C
B
V
PWR V  
IN  
IN  
0.1µF  
100k  
95  
90  
85  
LOW BAT IN  
LB  
LB  
OUT  
IN  
PINV  
LTC1266-3.3  
N-CHANNEL  
Si9410  
L*  
R
SENSE  
TDRIVE  
5µH  
0.02Ω  
V
OUT  
3.3V  
5A  
0V = NORMAL  
+
–
SHDN  
SENSE  
>1.5V = SHUTDOWN  
1000pF  
I
TH  
SENSE  
R
C
C
T
+
C
OUT  
470Ω  
N-CHANNEL  
Si9410  
D1  
C
T
BINH  
SGND  
BDRIVE  
PGND  
330µF  
× 2  
MBRS130LT3  
180pF  
C
C
3300pF  
1266 TA01  
80  
*TOKO 919AS-4R7M  
0.01  
0.1  
1
5
LOAD CURRENT (A)  
1266 TA02  
Figure 1. High Efficiency Step-Down Converter  
1
1234567...20

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LTC1266IS-3.3#TR Linear LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs; Package: SO; Pins:

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LTC1266IS-3.3#TRPBF Linear LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs; Package: SO; Pins:

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LTC1266IS-5 Linear Synchronous Regulator Controller for N- or P-Channel MOSFETs

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LTC1266IS-5#PBF Linear LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs; Package: SO; Pins:

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LTC1266IS-5#TR Linear LTC1266 - Synchronous Regulator Controller for N- or P-Channel MOSFETs; Package: SO; Pins:

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