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MIC38HC43YN

产品描述Switching Controllers Monolithic SMPS Controller
产品类别电源/电源管理    电源电路   
文件大小77KB,共8页
制造商Microchip(微芯科技)
官网地址https://www.microchip.com
标准
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MIC38HC43YN概述

Switching Controllers Monolithic SMPS Controller

MIC38HC43YN规格参数

参数名称属性值
是否Rohs认证符合
厂商名称Microchip(微芯科技)
包装说明DIP, DIP8,.3
Reach Compliance Codecompliant
ECCN代码EAR99
Factory Lead Time9 weeks
模拟集成电路 - 其他类型SWITCHING CONTROLLER
控制技术PULSE WIDTH MODULATION
最大输入电压20 V
最小输入电压7.6 V
JESD-30 代码R-PDIP-T8
JESD-609代码e3
长度9.52 mm
端子数量8
最高工作温度85 °C
最低工作温度-40 °C
最大输出电流1 A
封装主体材料PLASTIC/EPOXY
封装代码DIP
封装等效代码DIP8,.3
封装形状RECTANGULAR
封装形式IN-LINE
峰值回流温度(摄氏度)NOT APPLICABLE
座面最大高度3.43 mm
最大供电电流 (Isup)6 mA
标称供电电压 (Vsup)15 V
表面贴装NO
最大切换频率55 kHz
技术BICMOS
温度等级INDUSTRIAL
端子面层Matte Tin (Sn)
端子形式THROUGH-HOLE
端子节距2.54 mm
端子位置DUAL
处于峰值回流温度下的最长时间NOT APPLICABLE
宽度6.35 mm
Base Number Matches1

文档预览

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MIC38HC42/3/4/5
Micrel, Inc.
MIC38HC42/3/4/5
BiCMOS 1A Current-Mode PWM Controllers
General Description
The MIC38HC4x family are fixed frequency current-mode
PWM controllers with 1A drive current capability. Micrel’s
BiCMOS devices are pin-compatible with 384x bipolar de-
vices. Their high output drive, with fast rise and fall times,
combined with low startup current make it an ideal PWM
controller where high efficiency is required.
Undervoltage lockout circuitry allows the ’42 and ’44 versions
to start up at 14.5V and operate down to 9V, and the ’43 and
’45 versions start at 8.4V with operation down to 7.6V. All
versions operate up to 20V.
When compared to bipolar UC384x devices operating from a
15V supply, start-up current has been reduced to 50µA
typical and operating current has been reduced to 4.0 mA
typical. Decreased output rise and fall times drive larger
MOSFETs, and rail-to-rail output capability increases effi-
ciency, especially at lower supply voltages. The MIC38HC4x
also features a trimmed oscillator discharge current and
bandgap reference.
MIC38HC4x-1 is available in 14-pin plastic DIP and SOIC
packages. 8-pin devices feature small size, while 14-pin
devices separate the analog and power connections for
improved performance and power dissipation.
Features
• Fast 20ns output rise and 15ns output fall times
• –40°C to +85°C temperature range
exceeds UC284x specifications
• High-performance, low-power BiCMOS Process
• Ultralow start-up current (50µA typical)
• Low operating current (4mA typical)
• High output drive (1A peak current, HC version)
• CMOS outputs with rail-to-rail swing
• Current-mode operation up to 500kHz
• Trimmed 5V bandgap reference
• Pin-for-pin compatible with UC3842/3843/3844/3845(A)
• Trimmed oscillator discharge current
• UVLO with hysteresis
• Low cross-conduction currents
Applications
Current-mode, off-line, switched-mode power supplies
Current-mode, dc-to-dc converters.
Step-down “buck” regulators
Step-up “boost” regulators
Flyback, isolated regulators
Forward converters
Synchronous FET converters
Functional Diagram
VDD
7 (12)
*
35V
5V
Reference
UVLO
VREF
8 (14)
(VD)
(11)
RT/CT
4 (7)
Oscillator
T
Q
OUT
6 (10)
FB
2 (3)
2R
2.5V
R
S
R
Q
(PGND)
(8)
*
COMP
1 (1)
GND*(AGND)
5
(9)
ISNS
3 (5)
( ) pins are on MIC38HC4x-1 (14-lead) versions only
* MIC38HC4x (8-lead) versions only
MIC38HC42, MIC38HC43 (96% max. duty cycle) versions only
MIC38HC44, MIC38HC45 (50% max. duty cycle) versions only
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
April 2005
1
M9999-042205

MIC38HC43YN相似产品对比

MIC38HC43YN MIC38HC45-1YM MIC38HC45-1YM-TR MIC38HC45YM MIC38HC42-1YM MIC38HC44YM-TR MIC38HC43-1YM-TR MIC38HC44YM MIC38HC43-1YN
描述 Switching Controllers Monolithic SMPS Controller Rectifiers RECTIFIER SUPER FAST "F" LEAD FREE Switching Controllers Tantalum Capacitors - Solid SMD 10uF 50volt 10% D Case Molded Switching Controllers Monolithic SMPS Controller Switching Controllers Switching Controllers Switching Controllers Monolithic SMPS Controller Switching Controllers Monolithic SMPS Controller
是否Rohs认证 符合 符合 - 符合 符合 符合 - 符合 -
厂商名称 Microchip(微芯科技) Microchip(微芯科技) - Microchip(微芯科技) Microchip(微芯科技) Microchip(微芯科技) - Microchip(微芯科技) -
包装说明 DIP, DIP8,.3 SOP, SOP14,.25 - LEAD FREE, SOIC-8 SOP, SOP14,.25 LEAD FREE, SOIC-8 LSOP, LSOP, DIP,
Reach Compliance Code compliant compliant - compliant compliant compliant compliant compliant compliant
ECCN代码 EAR99 EAR99 - EAR99 EAR99 EAR99 - EAR99 -
Factory Lead Time 9 weeks 19 weeks - 13 weeks 20 weeks 19 weeks 19 weeks 15 weeks 9 weeks
模拟集成电路 - 其他类型 SWITCHING CONTROLLER SWITCHING CONTROLLER - SWITCHING REGULATOR SWITCHING CONTROLLER SWITCHING REGULATOR SWITCHING CONTROLLER SWITCHING REGULATOR SWITCHING CONTROLLER
控制技术 PULSE WIDTH MODULATION PULSE WIDTH MODULATION - PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
最大输入电压 20 V 20 V - 18 V 20 V 18 V 18 V 18 V 18 V
最小输入电压 7.6 V 7.6 V - 12 V 9 V 12 V 12 V 12 V 12 V
JESD-30 代码 R-PDIP-T8 R-PDSO-G14 - R-PDSO-G8 R-PDSO-G14 R-PDSO-G8 R-PDSO-G14 R-PDSO-G8 R-PDIP-T14
JESD-609代码 e3 e3 - e4 e3 e4 - e4 -
长度 9.52 mm 8.65 mm - 4.9 mm 8.65 mm 4.9 mm 8.65 mm 4.9 mm 19.558 mm
端子数量 8 14 - 8 14 8 14 8 14
最高工作温度 85 °C 85 °C - 85 °C 85 °C 85 °C 85 °C 85 °C 85 °C
最低工作温度 -40 °C -40 °C - -40 °C -40 °C -40 °C -40 °C -40 °C -40 °C
最大输出电流 1 A 1 A - 1 A 1 A 1 A - 1 A -
封装主体材料 PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
封装代码 DIP SOP - LSOP SOP SOP LSOP LSOP DIP
封装形状 RECTANGULAR RECTANGULAR - RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
封装形式 IN-LINE SMALL OUTLINE - SMALL OUTLINE, LOW PROFILE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE, LOW PROFILE SMALL OUTLINE, LOW PROFILE IN-LINE
峰值回流温度(摄氏度) NOT APPLICABLE 260 - 260 260 260 - 260 -
座面最大高度 3.43 mm 1.6 mm - 1.63 mm 1.6 mm 1.879 mm 1.6 mm 1.63 mm 5.588 mm
表面贴装 NO YES - YES YES YES YES YES NO
最大切换频率 55 kHz 55 kHz - 500 kHz 55 kHz 500 kHz - 500 kHz -
技术 BICMOS BICMOS - BICMOS BICMOS BICMOS BICMOS BICMOS BICMOS
温度等级 INDUSTRIAL INDUSTRIAL - INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
端子面层 Matte Tin (Sn) Matte Tin (Sn) - Nickel/Palladium/Gold (Ni/Pd/Au) Matte Tin (Sn) Nickel/Palladium/Gold (Ni/Pd/Au) - Nickel/Palladium/Gold (Ni/Pd/Au) -
端子形式 THROUGH-HOLE GULL WING - GULL WING GULL WING GULL WING GULL WING GULL WING THROUGH-HOLE
端子节距 2.54 mm 1.27 mm - 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 2.54 mm
端子位置 DUAL DUAL - DUAL DUAL DUAL DUAL DUAL DUAL
处于峰值回流温度下的最长时间 NOT APPLICABLE 40 - 40 40 40 - 40 -
宽度 6.35 mm 3.9 mm - 3.9 mm 3.9 mm 3.9 mm 3.9 mm 3.9 mm 7.62 mm
Base Number Matches 1 - - 1 - 1 1 1 1
控制模式 - CURRENT-MODE - CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE CURRENT-MODE
湿度敏感等级 - 1 - 3 1 3 - 3 -
功能数量 - 1 - 1 1 1 1 1 1
标称输入电压 - - - 15 V - 15 V 15 V 15 V 15 V
切换器配置 - - - BOOST - BOOST BUCK-BOOST BOOST BUCK-BOOST
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