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Datasheet> 器件分类 > 电源/电源管理> 电源电路> LT3645EMSE#PBF
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LT3645EMSE#PBF

产品描述IC REG DL BUCK/LINEAR 12-MSOP
产品类别电源/电源管理    电源电路   
文件大小306KB，共24页
制造商Linear ( ADI )
官网地址http://www.analog.com/cn/index.html
标准
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LT3645EMSE#PBF概述

IC REG DL BUCK/LINEAR 12-MSOP

LT3645EMSE#PBF规格参数

参数名称属性值
Brand NameLinear Technology
是否Rohs认证符合
厂商名称Linear ( ADI )
零件包装代码MSOP
包装说明HTSSOP, TSSOP12,.19
针数12
制造商包装代码MSE
Reach Compliance Codecompliant
ECCN代码EAR99
Samacsys Description36V 0.5A Sw. Regulator 0.2A LDO MSOP12EP Linear Technology, LT3645EMSE#PBF Switching Regulator 500mA Adjustable, -0.3 to 8 V, 12-Pin MSOP
其他特性ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR
模拟集成电路 - 其他类型SWITCHING REGULATOR
控制模式CURRENT-MODE
最大输入电压36 V
最小输入电压3.6 V
标称输入电压12 V
JESD-30 代码R-PDSO-G12
JESD-609代码e3
长度4.039 mm
湿度敏感等级1
功能数量1
端子数量12
最高工作温度125 °C
最低工作温度
最大输出电流1.25 A
封装主体材料PLASTIC/EPOXY
封装代码HTSSOP
封装等效代码TSSOP12,.19
封装形状RECTANGULAR
封装形式SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH
峰值回流温度（摄氏度）NOT SPECIFIED
认证状态Not Qualified
座面最大高度1.1 mm
表面贴装YES
切换器配置BUCK
最大切换频率825 kHz
技术BIPOLAR
温度等级OTHER
端子面层Matte Tin (Sn)
端子形式GULL WING
端子节距0.65 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 mm

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LT3645
36V 500mA Step-Down
Regulator and 200mA LDO
FEATURES
n
DESCRIPTION
The LT
®
3645 is a dual output regulator combining a 500mA
buck regulator and a 200mA low dropout linear regula-
tor (LDO). The wide input voltage range of 3.6V to 36V
makes the LT3645 suitable for regulating power from a
wide variety of sources, including 24V industrial supplies
and automotive batteries. Its high operating frequency
allows the use of tiny, low cost inductors and capacitors,
resulting in a very small solution.
Cycle-by-cycle current limit and frequency foldback pro-
vide protection against shorted outputs. Soft-start and
frequency foldback eliminate input current surge during
start-up.
The linear regulator operates from the V
CC2
pin at voltages
down to 1.2V. It supplies 200mA of output current with a
typical dropout voltage of 310mV.
Other features of the LT3645 include a <2μA shutdown,
short circuit protection, soft-start and thermal shutdown.
The LT3645 is available in the thermally enhanced 16-lead
(3mm × 3mm) QFN package, or a 12-lead MSE package.
L,
LT, LTC, LTM, Linear Technology, Burst Mode and the Linear logo are registered trademarks
of Linear Technology Corporation. All other trademarks are the property of their respective
owners.
n
n
n
n
n
n
n
n
Wide Input Range:
Operation from 3.6V to 36V
Overvoltage Lockout Protects Circuit Through
55V Transients on Input
500mA Output Current Switching Regulator
High Switching Frequency: 750kHz
200mA Low Dropout Linear Regulator
1.2V to 16V Input; 0.8V to 8V Output
310mV Dropout Voltage V
CC2
to OUT2
Precision Programmable Undervoltage Lockout
Short-Circuit Robust
Internal Soft-Start
<2μA Shutdown Current
Small Thermally Enhanced 16-Lead (3mm × 3mm)
QFN and 12-Lead MSE Packages
APPLICATIONS
n
n
Automotive CMOS Image Sensors
Industrial/Automotive Micro-Controller Supply
TYPICAL APPLICATION
3.3V/5V Step-Down Converter
90
BOOST
6.2V TO 36V
1μF
V
IN
LT3645
DA
ON OFF
EN/UVLO
FB
10k
EN2
PGOOD
NPG
V
CC2
OUT2
31.6k
FB2
GND
10k
3645 TA01a
Buck Regulator Efficiency
V
OUT
= 5V
5V
300mA
52.3k
10μF
EFFICIENCY (%)
80
V
OUT
= 3.3V
70
0.1μF
15μH
SW
60
3.3V
200mA
2.2μF
50
V
IN
= 12V
0
100
400
300
200
LOAD CURRENT (mA)
500
3645 TA01b
3645f
1

LT3645EMSE#PBF相似产品对比

LT3645EMSE#PBF LT3645IMSE#TRPBF LT3645IMSE#PBF LT3645EUD#TRPBF LT3645EMSE#TRPBF LT3645HMSE#TRPBF LT3645HMSE#PBF LT3645IUD#PBF LT3645IUD#TRPBF LT3645EUD#PBF
描述 IC REG DL BUCK/LINEAR 12-MSOP IC REG DL BUCK/LINEAR 12-MSOP IC REG DL BUCK/LINEAR 12-MSOP IC REG DL BUCK/LINEAR 16-QFN IC REG DL BUCK/LINEAR 12-MSOP IC REG DL BUCK/LINEAR 12-MSOP IC REG DL BUCK/LINEAR 12-MSOP IC REG DL BUCK/LINEAR 16-QFN IC REG DL BUCK/LINEAR 16-QFN IC REG DL BUCK/LINEAR 16-QFN
Brand Name Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology Linear Technology
是否Rohs认证 符合 符合 符合 符合 符合 符合 符合 符合 符合 符合
零件包装代码 MSOP MSOP MSOP QFN MSOP MSOP MSOP QFN QFN QFN
包装说明 HTSSOP, TSSOP12,.19 HTSSOP, TSSOP12,.19 HTSSOP, TSSOP12,.19 HVQCCN, LCC16,.12SQ,20 HTSSOP, TSSOP12,.19 HTSSOP, TSSOP12,.19 HTSSOP, TSSOP12,.19 HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20 HVQCCN, LCC16,.12SQ,20
针数 12 12 12 16 12 12 12 16 16 16
制造商包装代码 MSE MSE MSE UD MSE MSE MSE UD UD UD
Reach Compliance Code compliant compliant compliant compliant compliant compliant compliant compliant compliant compliant
ECCN代码 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99 EAR99
其他特性 ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR ALSO OPERATES IN ADJUSTABLE MODE FROM 0.8 TO 8V, ALSO OPERATES AS LDO REGULATOR
模拟集成电路 - 其他类型 SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR SWITCHING REGULATOR
控制模式 CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
最大输入电压 36 V 36 V 36 V 36 V 36 V 36 V 36 V 36 V 36 V 36 V
最小输入电压 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V 3.6 V
标称输入电压 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V 12 V
JESD-30 代码 R-PDSO-G12 R-PDSO-G12 R-PDSO-G12 S-PQCC-N16 R-PDSO-G12 R-PDSO-G12 R-PDSO-G12 S-PQCC-N16 S-PQCC-N16 S-PQCC-N16
JESD-609代码 e3 e3 e3 e3 e3 e3 e3 e3 e3 e3
长度 4.039 mm 4.039 mm 4.039 mm 3 mm 4.039 mm 4.039 mm 4.039 mm 3 mm 3 mm 3 mm
湿度敏感等级 1 1 1 1 1 1 1 1 1 1
功能数量 1 1 1 1 1 1 1 1 1 1
端子数量 12 12 12 16 12 12 12 16 16 16
最大输出电流 1.25 A 1.25 A 1.25 A 1.25 A 1.25 A 1.25 A 1.25 A 1.25 A 1.25 A 1.25 A
封装主体材料 PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
封装代码 HTSSOP HTSSOP HTSSOP HVQCCN HTSSOP HTSSOP HTSSOP HVQCCN HVQCCN HVQCCN
封装等效代码 TSSOP12,.19 TSSOP12,.19 TSSOP12,.19 LCC16,.12SQ,20 TSSOP12,.19 TSSOP12,.19 TSSOP12,.19 LCC16,.12SQ,20 LCC16,.12SQ,20 LCC16,.12SQ,20
封装形状 RECTANGULAR RECTANGULAR RECTANGULAR SQUARE RECTANGULAR RECTANGULAR RECTANGULAR SQUARE SQUARE SQUARE
封装形式 SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH SMALL OUTLINE, HEAT SINK/SLUG, THIN PROFILE, SHRINK PITCH CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度） NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
认证状态 Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
座面最大高度 1.1 mm 1.1 mm 1.1 mm 0.8 mm 1.1 mm 1.1 mm 1.1 mm 0.8 mm 0.8 mm 0.8 mm
表面贴装 YES YES YES YES YES YES YES YES YES YES
切换器配置 BUCK BUCK BUCK BUCK BUCK BUCK BUCK BUCK BUCK BUCK
最大切换频率 825 kHz 825 kHz 825 kHz 825 kHz 825 kHz 825 kHz 825 kHz 825 kHz 825 kHz 825 kHz
技术 BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR BIPOLAR
端子面层 Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn) Matte Tin (Sn)
端子形式 GULL WING GULL WING GULL WING NO LEAD GULL WING GULL WING GULL WING NO LEAD NO LEAD NO LEAD
端子节距 0.65 mm 0.65 mm 0.65 mm 0.5 mm 0.65 mm 0.65 mm 0.65 mm 0.5 mm 0.5 mm 0.5 mm
端子位置 DUAL DUAL DUAL QUAD DUAL DUAL DUAL QUAD QUAD QUAD
处于峰值回流温度下的最长时间 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
宽度 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm 3 mm
厂商名称 Linear ( ADI ) Linear ( ADI ) - Linear ( ADI ) Linear ( ADI ) - - Linear ( ADI ) Linear ( ADI ) Linear ( ADI )
最高工作温度 125 °C 125 °C 125 °C 125 °C 125 °C - - 125 °C 125 °C 125 °C
温度等级 OTHER AUTOMOTIVE AUTOMOTIVE OTHER OTHER - - AUTOMOTIVE AUTOMOTIVE OTHER

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