EEWORLDEEWORLDEEWORLD

Part Number

Search

MIC3172BM

Description
3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8
CategoryPower/power management    The power supply circuit   
File Size906KB,20 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Related ProductsFound16parts with similar functions to MIC3172BM
Download Datasheet Parametric Compare View All

MIC3172BM Overview

3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8

MIC3172BM Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMicrochip
Parts packaging codeSOIC
package instructionSOP, SOP8,.25
Contacts8
Reach Compliance Codecompli
ECCN codeEAR99
Analog Integrated Circuits - Other TypesSWITCHING REGULATOR
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage40 V
Minimum input voltage3 V
Nominal input voltage5 V
JESD-30 codeR-PDSO-G8
JESD-609 codee0
length4.93 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current3.5 A
Nominal output voltage1.24 V
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)240
Certification statusNot Qualified
Maximum seat height1.73 mm
Maximum supply current (Isup)9 mA
surface mountYES
Switch configurationSINGLE
Maximum switching frequency115 kHz
technologyBIPOLAR
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn/Pb)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.94 mm
MIC2172/3172
100kHz 1.25A Switching Regulators
General Description
The MIC2172 and MIC3172 are complete 100kHz SMPS
current-mode controllers with internal 65V 1.25A power
switches. The MIC2172 features external frequency
synchronization or frequency adjustment, while the
MIC3172 features an enable/shutdown control input.
Although primarily intended for voltage step-up
applications, the floating switch architecture of the
MIC2172/3172 makes it practical for step-down, inverting,
and Cuk configurations as well as isolated topologies.
Operating from 3V to 40V, the MIC2172/3172 draws only
7mA of quiescent current making it attractive for battery
operated supplies.
The MIC3172 is for applications that require on/off control
of the regulator. The MIC3172 is externally shutdown by
applying a TTL low signal to EN (enable). When disabled,
the MIC3172 draws only leakage current (typically less
than 1µA). EN must be high for normal operation. For
applications not requiring control, EN must be tied to V
IN
or
TTL high.
The MIC2172 is for applications requiring two or more
SMPS regulators that operate from the same input supply.
The MIC2172 features a SYNC input which allows locking
of its internal oscillator to an external reference. This
makes it possible to avoid the audible beat frequencies
that result from the unequal oscillator frequencies of
independent SMPS regulators.
A reference signal can be supplied by one MIC2172
designated as a master. To insure locking of the slave’s
oscillators, the reference oscillator frequency must be
higher than the slave’s. The master MIC2172’s oscillator
frequency is increased up to 135kHz by connecting a
resistor from SYNC to ground (see applications
information).
The MIC2172/3172 is available in an 8-pin plastic DIP or
SOIC for –40°C to +85°C operation.
Features
1.25A, 65V internal switch rating
3V to 40V input voltage range
Current-mode operation
Internal cycle-by-cycle current limit
Thermal shutdown
Low external parts count
Operates in most switching topologies
7mA quiescent current (operating)
<1µA quiescent current, shutdown mode (MIC3172)
TTL shutdown compatibility (MIC3172)
External frequency synchronization (MIC2172)
External frequency trim (MIC2172)
Fits most LT1172 sockets (see applications info)
Applications
Laptop/palmtop computers
Toys
Hand-held instruments
Off-line converter up to 50W (requires external power
switch)
Predriver for higher power capability
Master/slave configurations (MIC2172)
___________________________________________________________________________________________________________
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 2006
M9999-041806
(408) 955-1690

MIC3172BM Related Products

MIC3172BM MIC2172 MIC2172BN MIC2172BM MIC2172_06 MIC3172 MIC3172BN MIC3172YM
Description 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8 3.5 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PDSO8
control mode CURRENT-MODE PEAK CURRENT CURRENT-MODE CURRENT-MODE PEAK CURRENT PEAK CURRENT CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Number of functions 1 1 1 1 1 1 1 1
Number of terminals 8 8 8 8 8 8 8 8
Maximum operating temperature 85 °C 85 Cel 85 °C 85 °C 85 Cel 85 Cel 85 °C 85 °C
Minimum operating temperature -40 °C -40 Cel -40 °C -40 °C -40 Cel -40 Cel -40 °C -40 °C
Maximum output current 3.5 A 3.5 A 3.5 A 3.5 A 3.5 A 3.5 A 3.5 A 3.5 A
surface mount YES Yes NO YES Yes Yes NO YES
Switch configuration SINGLE SINGLE BOOST BOOST SINGLE SINGLE SINGLE SINGLE
Maximum switching frequency 115 kHz 115 kHz 115 kHz 115 kHz 115 kHz 115 kHz 115 kHz 115 kHz
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal form GULL WING GULL WING THROUGH-HOLE GULL WING GULL WING GULL WING THROUGH-HOLE GULL WING
Terminal location DUAL DUAL DUAL DUAL DUAL DUAL DUAL DUAL
Is it Rohs certified? incompatible - incompatible incompatible - - incompatible conform to
package instruction SOP, SOP8,.25 - DIP, DIP8,.3 SOP, SOP8,.25 - - DIP, DIP8,.3 LEAD FREE, SOIC-8
Reach Compliance Code compli - _compli _compli - - compli compli
ECCN code EAR99 - EAR99 EAR99 - - EAR99 EAR99
Analog Integrated Circuits - Other Types SWITCHING REGULATOR - SWITCHING REGULATOR SWITCHING REGULATOR - - SWITCHING REGULATOR SWITCHING REGULATOR
Maximum input voltage 40 V - 40 V 40 V - - 40 V 40 V
Minimum input voltage 3 V - 3 V 3 V - - 3 V 3 V
Nominal input voltage 5 V - 5 V 5 V - - 5 V 5 V
JESD-30 code R-PDSO-G8 - R-PDIP-T8 R-PDSO-G8 - - R-PDIP-T8 R-PDSO-G8
JESD-609 code e0 - e0 e0 - - e0 e4
length 4.93 mm - 9.525 mm 4.93 mm - - 9.525 mm 4.93 mm
Package body material PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY - - PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP - DIP SOP - - DIP SOP
Package shape RECTANGULAR - RECTANGULAR RECTANGULAR - - RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE - IN-LINE SMALL OUTLINE - - IN-LINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 240 - 240 240 - - 240 260
Certification status Not Qualified - Not Qualified Not Qualified - - Not Qualified Not Qualified
Terminal surface Tin/Lead (Sn/Pb) - Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15) - - Tin/Lead (Sn/Pb) Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal pitch 1.27 mm - 2.54 mm 1.27 mm - - 2.54 mm 1.27 mm
Maximum time at peak reflow temperature 30 - 30 30 - - 30 40
width 3.94 mm - 7.62 mm 3.94 mm - - 7.62 mm 3.94 mm

Recommended Resources

MIC3172BM Similar Products

Part Number Manufacturer Description
MIC3172YM Rochester Electronics 3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOIC-8
MIC3172YM-TR Microchip(微芯科技) Switching Voltage Regulators
MIC3172BM Micrel ( Microchip ) Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, BIPolar, PDSO8, SOIC-8
MIC3172YMTR Microchip(微芯科技) 3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOIC-8
MIC3172YMTR Micrel ( Microchip ) 3.5A SWITCHING REGULATOR, 115kHz SWITCHING FREQ-MAX, PDSO8, LEAD FREE, SOIC-8
MIC3172BMT&R Micrel ( Microchip ) Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, PDSO8, SOIC-8
MIC3172BMT&R Microchip(微芯科技) Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, PDSO8, SOIC-8
MIC3172YN Microchip(微芯科技) Switching Voltage Regulators 1.25A 100kHz Switching Regulator
MIC2172YN Microchip(微芯科技) Switching Voltage Regulators 2.5A 100kHz Switching Regulator
5962-9207901MPA Linear ( ADI ) IC 1.25 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, CDIP8, MINI, CERDIP-8, Switching Regulator or Controller
LT1172CJ8 Linear ( ADI ) 11 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5
ST735CN ST(意法半导体) -5V INVERTING, NEGATIVE OUTPUT CURRENT-MODE PWM REGULATOR
MIC3172BN Micrel ( Microchip ) Switching Regulator, Current-mode, 3.5A, 115kHz Switching Freq-Max, BIPolar, PDIP8, PLASTIC, DIP-8
MIC3172AJ Microchip(微芯科技) Switching Regulator, Current-mode, 1.25A, 100kHz Switching Freq-Max, BIPolar, CDIP8, CERAMIC, DIP-8
MIC2172AJ Microchip(微芯科技) Switching Regulator, Current-mode, 1.25A, 135kHz Switching Freq-Max, BIPolar, CDIP8, CERAMIC, DIP-8
LT1172MJ8 Linear ( ADI ) 11 A SWITCHING REGULATOR, 115 kHz SWITCHING FREQ-MAX, PZFM5
A family of high-performance devices designed specifically for customers
Discuss TI's current research and exploration in the fields of high-performance DSP, multi-core and next-generation processors that adapt to future development trends.[flash]http://player.youku.com/pl...
德仪DSP新天地 DSP and ARM Processors
Knowledge discussion of msp430
1. How should sfrb and sfrw be understood? Isn't the range of sfrw 0x100 to 0x1FF? Whyis there a 0 (blue color) in the middle of Sfrw ADC12CTL=0x01a2H when it is defined in the book? 2. Port Px has 8 ...
zxjk001 Microcontroller MCU
Please help me, experts~~~
Electronic transformer: Output 4.5v 500ml Electronic transformer input: 100-240V 50-60HZ...
lalaso Power technology
A question about limit switches
Hello teachers, this is what I did. I used an l298n dual H-bridge to control a reduction motor, and the motor drove a pipe switch with a movable range of 90 degrees. Then I used a limit switch with tw...
grove_armweak Motor Drive Control(Motor Control)
[Synopsys IP Resources] Why In-Memory Computing Will Disrupt AI SoC Development
The drive for higher performance per watt in artificial intelligence (AI) algorithms is driving the development of specific hardware design techniques, including in-memory computing for system-on-chip...
arui1999 Integrated technical exchanges
Request for the schematic diagram of the subway safety door control system and the communication connection method between the computer and the safety door
My company specializes in subway safety doors and BRT safety doors. I am responsible for maintenance and repair. At present, there are many communication failures that the company has not yet solved. ...
dongjinliu Industrial Control Electronics

Popular Articles

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2160  2180  1265  1718  1098  44  26  35  23  58 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号