5秒后页面跳转
捷配首页

Datasheet > 电源电路 > 开关式稳压器或控制器> LTC1265CS-5#PBF
LTC1265CS-5#PBF PDF预览

LTC1265CS-5#PBF

更新时间： 2024-01-26 13:36:45
品牌 Logo 应用领域
凌特 - Linear 转换器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
16页 230K
描述
LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter; Package: SO; Pins: 14; Temperature Range: 0°C to 70°C

阅读下载

获取价格

LTC1265CS-5#PBF 技术参数

是否无铅： 含铅是否Rohs认证： 符合
生命周期：Active包装说明：SOP,
针数：14Reach Compliance Code：compliant
风险等级：5.29模拟集成电路 - 其他类型：SWITCHING REGULATOR
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：5.4 V
标称输入电压：10 VJESD-30 代码：R-PDSO-G14
JESD-609代码：e3长度：8.65 mm
湿度敏感等级：1功能数量：1
端子数量：14最高工作温度：70 °C
最低工作温度：最大输出电流：1.2 A
标称输出电压：5 V封装主体材料：PLASTIC/EPOXY
封装代码：SOP封装形状：RECTANGULAR
封装形式：SMALL OUTLINE峰值回流温度（摄氏度）：260
认证状态：Not Qualified座面最大高度：1.75 mm
最大供电电流 (Isup)：2.4 mA表面贴装：YES
切换器配置：BUCK最大切换频率：700 kHz
技术：CMOS温度等级：COMMERCIAL
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：30宽度：3.9 mm

LTC1265CS-5#PBF 数据手册

 浏览型号LTC1265CS-5#PBF的Datasheet PDF文件第2页浏览型号LTC1265CS-5#PBF的Datasheet PDF文件第3页浏览型号LTC1265CS-5#PBF的Datasheet PDF文件第4页浏览型号LTC1265CS-5#PBF的Datasheet PDF文件第6页浏览型号LTC1265CS-5#PBF的Datasheet PDF文件第7页浏览型号LTC1265CS-5#PBF的Datasheet PDF文件第8页 
LTC1265/LTC1265-3.3/LTC1265-5  
U
U W  
(Pin 9 connection shown for LTC1265-3.3 and LTC1265-5; change create LTC1265)  
FUNCTIONAL DIAGRA  
PWR V  
1, 13  
IN  
+
–
SENSE  
8
SENSE  
7
14 SW  
12 PGND  
V
FB  
–
+
9
ADJUSTABLE  
VERSION  
V
–
+
SLEEP  
R
S
25mV TO 150mV  
C
+
Q
5pF  
V
OS  
S
–
+
–
V
TH2  
13k  
6
G
I
TH  
100k  
V
–
TH1  
T
V
IN  
2
3
LB  
0UT  
+
+
–
REFERENCE  
10  
SHDN  
5
C
T
OFF-TIME  
CONTROL  
A3  
–
SENSE  
V
FB  
4
LB  
IN  
1265 FD  
11 SGND  
U
OPERATION  
(Refer to Functional Diagram)  
The LTC1265 uses a constant off-time architecture to  
switch its internal P-channel power MOSFET. The off time  
is set by an external timing capacitor at CT (Pin 5). The  
operatingfrequencyisthendeterminedbytheofftimeand  
the voltage across the shunt reaches the comparator’s  
threshold value, its output signal will change state, setting  
theflipflopandturningtheinternalP-channelMOSFEToff.  
The timing capacitor connected to Pin 5 is now allowed to  
discharge at a rate determined by the off-time controller.  
the difference between VIN and VOUT  
.
The output voltage is set by an internal resistive divider  
(LTC1265-3.3 and LTC1265-5) connected to SENSE–  
(Pin 7) or an external divider returned to VFB (Pin 9 for  
LTC1265). A voltage comparator V, and a gain block G,  
compare the divided output voltage with a reference  
voltage of 1.25V.  
When the voltage on the timing capacitor has discharged  
past VTH1, comparator T trips, sets the flip flop and causes  
the switch to turn on. Also, the timing capacitor is re-  
charged. The inductor current will again ramp up until the  
current comparator C trips. The cycle then repeats.  
When the load current increases, the output voltage de-  
creases slightly. This causes the output of the gain stage  
(Pin 6) to increase the current comparator threshold, thus  
tracking the load current.  
Tooptimizeefficiency,theLTC1265automaticallyswitches  
between continuous and Burst Mode operation. The volt-  
age comparator is the primary control element when the  
device is in Burst Mode operation, while the gain block  
controls the output voltage in continuous mode.  
When the load is relatively light, the LTC1265 automati-  
cally goes into Burst Mode operation. The current loop is  
interrupted when the output voltage exceeds the desired  
regulated value. The hysteretic voltage comparator V trips  
when VOUT is above the desired output voltage, shutting  
off the switch and causing the capacitor to discharge. This  
When the load is heavy, the LTC1265 is in continuous  
operation. During the switch ON time, current comparator  
C monitors the voltage between Pins 7 and 8 connected  
across an external shunt in series with the inductor. When  
5
12345678...16

下载PDF

与LTC1265CS-5#PBF相关器件

型号 品牌 描述 获取价格 数据表
LTC1265CS-5#TR Linear LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter; Package: SO; Pins: 14; Temperat

获取价格
LTC1265CS-5#TRPBF Linear LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter; Package: SO; Pins: 14; Temperat

获取价格
LTC1265I Linear 1.2A, High Efficiency Step-Down DC/DC Converter

获取价格
LTC1265IS Linear 1.2A, High Efficiency Step-Down DC/DC Converter

获取价格
LTC1265IS#PBF Linear LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter; Package: SO; Pins: 14; Temperat

获取价格
LTC1265IS#TR Linear LTC1265 - 1.2A, High Efficiency Step-Down DC/DC Converter; Package: SO; Pins: 14; Temperat

获取价格

与LTC1265CS-5#PBF相关文章

您还可以找


热门产品
PCB打样/小批量
铝基板
BOM智能配单
PCBA制造
钣金
精密CNC
模具注塑
薄膜开关
精选活动
PCBA打样特惠
四六层板品质升级
铝基板品质升级
一体化电子制造
DFM下载
服务支持
企业认证
产品展示
工厂展示
工艺能力
积分商城
关于捷配
捷配简介
企业文化
公司动态
人才招聘
联系我们
帮助中心
下单流程
付款流程
开票流程
常见问题
全球PCB制造服务专线 400-613-0088

工作时间：9:00-21:00

CEO邮箱：ceo@jiepei.com

投诉邮箱：tousu@jiepei.com

捷配网-微信公众号 微信公众号
捷配网-微信公众号 抖音公众号
资质认证：
合作快递：
支付方式：
Copyright © 2024 Jiepei.com Inc. All Rights Reserved. 版权所有:杭州捷配信息科技有限公司 浙公网安备 33010502006866号 浙ICP备10014259号-119 营业执照ICP证