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MIC2182BM

Description
Switching Controller Current-mode 0.1A 330kHz Switching Freq-Max BICMOS PDSO16
CategoryPower/power management    The power supply circuit   
File Size240KB,28 Pages
ManufacturerMicrel ( Microchip )
Websitehttps://www.microchip.com
Download Datasheet Parametric Compare View All

MIC2182BM Overview

Switching Controller Current-mode 0.1A 330kHz Switching Freq-Max BICMOS PDSO16

MIC2182BM Parametric

Parameter NameAttribute value
Is it Rohs certified?incompatible
MakerMicrel ( Microchip )
package instructionSOP, SOP16,.25
Reach Compliance Codenot_compliant
Factory Lead Time1 week
Other featuresALSO OPERATES IN ADJUSTABLE MODE FROM 1.25 TO 6 V
Analog Integrated Circuits - Other TypesSWITCHING CONTROLLER
control modeCURRENT-MODE
Control TechnologyPULSE WIDTH MODULATION
Maximum input voltage32 V
Minimum input voltage4.5 V
Nominal input voltage15 V
JESD-30 codeR-PDSO-G16
JESD-609 codee0
length9.9 mm
Humidity sensitivity level1
Number of functions1
Number of terminals16
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Maximum output current0.1 A
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP16,.25
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)240
Certification statusNot Qualified
Maximum seat height1.895 mm
surface mountYES
Switch configurationPUSH-PULL
Maximum switching frequency330 kHz
technologyBICMOS
Temperature levelINDUSTRIAL
Terminal surfaceTin/Lead (Sn85Pb15)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperature30
width3.9 mm
MIC2182
Micrel
MIC2182
High-Efficiency Synchronous Buck Controller
Preliminary Information
General Description
Micrel’s MIC2182 is a synchronous buck (step-down) switch-
ing regulator controller. An all N-channel synchronous archi-
tecture and powerful output drivers allow up to a 20A output
current capabilty. The PWM and skip-mode control scheme
allows efficiency to exceed 95% over a wide range of load
current, making it ideal for battery powered applications, as
well as high current distributed power supplies.
The MIC2182 operates from a 4.5V to 32V input and can
operate with a maximum duty cycle of 86% for use in low-
dropout conditions. It also features a shutdown mode that
reduces quiescent current to 0.1µA.
The MIC2182 achieves high efficiency over a wide output
current range by automatically switching between PWM and
skip mode. Skip-mode operation enables the converter to
maintain high efficiency at light loads by turning off circuitry
pertaining to PWM operation, reducing the no-load supply
current from 1.6mA to 600µA. The operating mode is inter-
nally selected according to the output load conditions. Skip
mode can be defeated by pulling the PWM pin low which
reduces noise and RF interference.
The MIC2182 is available in a 16-pin SOP (small-outline
package) and SSOP (shrink small-outline package) with an
operating range from –40°C to +85°C.
Features
4.5V to 32V Input voltage range
1.25V to 6V Output voltage range
95% efficiency
300kHz oscillator frequency
Current sense blanking
5Ω impedance MOSFET Drivers
Drives N-channel MOSFETs
600µA typical quiescent current (skip-mode)
Logic controlled micropower shutdown (I
Q
< 0.1µA)
Current-mode control
Cycle-by-cycle current limiting
Built-in undervoltage protection
Adjustable undervoltage lockout
Easily synchronizable
Precision 1.245V reference output
0.6% total regulation
16-pin SOP and SSOP packages
Frequency foldback overcurrent protection
Sustained short-circuit protection at any input voltage
20A output current capability
DC power distribution systems
Notebook and subnotebook computers
PDAs and mobile communicators
Wireless modems
Battery-operated equipment
Applications
Typical Application
V
IN
4.5V to 30V*
R7
100k
D2
MIC2182-3.3BSM
10
11
SD103BWS
VIN
VDD
C5
0.1µF
6
2
BST
EN/UVLO HSD
PWM
VSW
LSD
14
16
15
13
12
8
9
7
C6
0.1µF
C9
4.7µF
16V
C11
22uf
35V
x2
Q2*
Si4884
Q1*
Si4884
L1
10µH
D1
B140
V
OUT
3.3V/4A
C7
220uf
10V
×2
GND
R2
0.02Ω
C4
1nF
1
3
SS
COMP
SYNC
PGND
CSH
VOUT
VREF
SGND
4
C3
0.1µF
C2
2.2nF
GND
R1
2k
5
C13, 1nF
* 30V maximum input voltage limit is due
to standard 30V MOSFET selection.
C1
0.1µF
See “Application Information” section for
5V to 3.3V/10A and other circuits.
4.5V–30V* to 3.3V/4A Converter
Micrel, Inc. • 1849 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 944-0970 • http://www.micrel.com
June 2000
1
MIC2182

MIC2182BM Related Products

MIC2182BM MIC2182-5.0BM
Description Switching Controller Current-mode 0.1A 330kHz Switching Freq-Max BICMOS PDSO16 Switching Controller Current-mode 0.1A 330kHz Switching Freq-Max BICMOS PDSO16
Is it Rohs certified? incompatible incompatible
Maker Micrel ( Microchip ) Micrel ( Microchip )
package instruction SOP, SOP16,.25 SOP, SOP16,.25
Reach Compliance Code not_compliant _compli
Factory Lead Time 1 week 1 week
Analog Integrated Circuits - Other Types SWITCHING CONTROLLER SWITCHING CONTROLLER
control mode CURRENT-MODE CURRENT-MODE
Control Technology PULSE WIDTH MODULATION PULSE WIDTH MODULATION
Maximum input voltage 32 V 32 V
Minimum input voltage 4.5 V 4.5 V
Nominal input voltage 15 V 15 V
JESD-30 code R-PDSO-G16 R-PDSO-G16
JESD-609 code e0 e0
length 9.9 mm 9.9 mm
Humidity sensitivity level 1 1
Number of functions 1 1
Number of terminals 16 16
Maximum operating temperature 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C
Maximum output current 0.1 A 0.1 A
Package body material PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP
Encapsulate equivalent code SOP16,.25 SOP16,.25
Package shape RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) 240 240
Certification status Not Qualified Not Qualified
Maximum seat height 1.895 mm 1.895 mm
surface mount YES YES
Switch configuration PUSH-PULL PUSH-PULL
Maximum switching frequency 330 kHz 330 kHz
technology BICMOS BICMOS
Temperature level INDUSTRIAL INDUSTRIAL
Terminal surface Tin/Lead (Sn85Pb15) Tin/Lead (Sn85Pb15)
Terminal form GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm
Terminal location DUAL DUAL
Maximum time at peak reflow temperature 30 30
width 3.9 mm 3.9 mm
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