Control IC. MIC2131 Datasheet

MIC2131 IC. Datasheet pdf. Equivalent

MIC2131 Datasheet
Recommendation MIC2131 Datasheet
Part MIC2131
Description High Voltage Synchronous Buck Control IC
Feature MIC2131; .
Manufacture Micrel Semiconductor
Datasheet
Download MIC2131 Datasheet





Micrel Semiconductor MIC2131
MIC2130/1
High Voltage Synchronous Buck
Control IC with Low EMI Option
General Description
The MIC2130/1 is a high voltage input PWM synchronous
buck controller IC. It is a voltage mode controller with a
fast hysteretic control loop (FHyCL) employed during fast
line and load transients. The internal gate drivers are
designed to drive high current MOSFETs.
The MIC2130/1 can produce output voltages down to 0.7V
with input voltage from 8V to 40V. The MIC2130 family of
control ICs implements fixed frequency PWM control. The
active anti-shoot through drive scheme means a wide
range of external MOSFETs may be used while
maintaining optimum efficiency.
The MIC2131 is the fully functional version of the family
and implements a new feature to minimize EMI. This
function is critical for systems that need to be compliant
with EMI standards throughout the world.
The MIC2130/1 is available in small size 16-pin 4mm x
4mm MLF® package, as well as 16-pin e-TSSOP at a
junction temperature range of –40°C to +125°C.
Data sheets and support documentation can be found on
Micrel’s web site at: www.micrel.com.
Features
8V to 40V input voltage range
Adjustable output voltages down to 0.7V
LOW EMI option MIC2131
Fixed 150kHz and 400kHz frequency options
Excellent line and load regulation due to fast hysteretic
control loop during transients
Adaptive gate drive allows efficiencies over 95%
Programmable current limit with no sense resistor
Senses low-side MOSFET current
Internal drivers allow 15A output current
Power Good output allow simple sequencing
Programmable soft-start pin
100% increase in current limit (MIC2131)
Output over-voltage protection
Programmable Input UVLO
16-pin e-TSSOP and 16-pin 4mm x 4mm MLF®
Junction temperature range of –40°C to +125°C
Applications
Industrial/Medical DC/DC point of use power
Printer head drivers
Automotive Systems
Telecom systems
LCD/ Plasma TV
Gaming Machines
Typical Application
MIC2130/1 High Input Voltage Converter
Efficiency VOUT = 3.3V
@ +25°C
98
96 12V
8V
94
92 20V
10V
90
88
86 30V 24V
84
82 40V
80 4 5 6 7
OUTPUT CURRENT (A)
MLF and MicroLeadFrame are registered trademarks of Amkor Technology, Inc.
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 2008
M9999-042108-C



Micrel Semiconductor MIC2131
Micrel, Inc.
Ordering Information
Part Number
Frequency
MIC2130-1YML
MIC2130-4YML
MIC2130-1YTSE
MIC2130-4YTSE
MIC2131-1YML
MIC2131-4YML
MIC2131-1YTSE
MIC2131-4YTSE
150kHz
400kHz
150kHz
400kHz
150kHz
400kHz
150kHz
400kHz
Output
Voltage
Adj.
Adj.
Adj.
Adj.
Adj.
Adj.
Adj.
Adj.
Low EMI
No
No
No
No
Yes
Yes
Yes
Yes
Junction Temp.
Range
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
–40° to +125°C
MIC2130/1
Package
16-Pin 4x4 MLF®
16-Pin 4x4 MLF®
16-Pin e-TSSOP
16-Pin e-TSSOP
16-Pin 4x4 MLF®
16-Pin 4x4 MLF®
16-Pin e-TSSOP
16-Pin e-TSSOP
Lead Finish
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pb-Free
Pin Configuration
HCL/AGND2
SS
FB
COMP
HSD
SW
PGND
LSD
16-Pin 4mm x 4mm MLF® (ML)
AVDD 1
PGOOD 2
HCL/AGND2 3
SS 4
FB 5
COMP 6
AGND1 7
EN/UVLO 8
16 CS
15 BST
14 HSD
13 SW
12 PGND
11 LSD
10 VDD
9 VIN
16-Pin e-TSSOP (TS)
April 2008
2 M9999-042108-C



Micrel Semiconductor MIC2131
Micrel, Inc.
MIC2130/1
Pin Description
Pin Number
MLF-16
1
Pin Number
e-TSSOP-16
3
24
35
46
57
68
Pin Name
HCL*
AGND2
SS
FB
COMP
AGND1
EN/UVLO
7 9 VIN
8 10 VDD
9 11 LSD
10 12 PGND
11 13 SW
12 14 HSD
13 15 BST
14 16 CS
15 1 AVDD
16 2 PGOOD
Note: * indicates that is only used on MIC2131.
Pin Function
High Current Limit (Output): The capacitor on this pin sets
the duration of time so that the current limit will be set to
200% of its nominal set current. AGND2 for MIC2130
Soft Start (Output): Active at Power-up, Enable, and Current
Limit recovery.
Feedback (Output): Input to error amplifier. Regulates to
0.7V.
Compensation (Output): Pin for external compensation.
Analog Ground.
Enable (Input): Logic low turns the IC off. When the voltage
drops below the band gap reference voltage of the IC the
device turns off. This accurate threshold allows the pin to be
used as an accurate under voltage lockout.
Supply Voltage (Input): 8V to 40V.
5V Internal Linear Regulator from VIN. When VIN is <8V,
this regulator operates in drop-out mode. Connect external
bypass capacitor.
Low-Side Drive (Output): High-current driver output for
external low-side MOSFET.
Power Ground: High current return for ext. Low side driver.
Switch Node (Output): High current output driver return.
High-Side Drive (Output): High current output-driver for ext.
high-side MOSFET.
Boost (Output): Provides voltage for high-side MOSFET
driver. The gate drive voltage is higher than the source
voltage by VDD minus a diode drop.
Current Sense (Output): Current-limit comparator non
inverting input. The current limit is sensed across the low-
side FET during the OFF time. Current limit is set by the
resistor in series with the CS pin.
Analog Supply Voltage (internal 5V LDO): Connect external
By pass capacitor.
Power Good (Output): High output when VOUT > 90%
nominal.
April 2008
3 M9999-042108-C





@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)