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MIC5157YN

Description
LDO Voltage Controllers Super LDO, Regulator-Selectable
CategoryAnalog mixed-signal IC    The signal circuit   
File Size270KB,13 Pages
ManufacturerMicrochip
Websitehttps://www.microchip.com
Environmental Compliance
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MIC5157YN Overview

LDO Voltage Controllers Super LDO, Regulator-Selectable

MIC5157YN Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerMicrochip
package instructionDIP,
Reach Compliance Codecompliant
Factory Lead Time6 weeks
Analog Integrated Circuits - Other TypesANALOG CIRCUIT
JESD-30 codeR-PDIP-T14
JESD-609 codee3
Number of functions1
Number of terminals14
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeDIP
Package shapeRECTANGULAR
Package formIN-LINE
Peak Reflow Temperature (Celsius)NOT APPLICABLE
Certification statusNot Qualified
Maximum seat height5.588 mm
Maximum supply voltage (Vsup)36 V
Minimum supply voltage (Vsup)3 V
Nominal supply voltage (Vsup)5 V
surface mountNO
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn) - annealed
Terminal formTHROUGH-HOLE
Terminal pitch2.54 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT APPLICABLE
width7.62 mm
MIC5156/5157/5158
Micrel, Inc.
MIC5156/5157/5158
Super LDO™ Regulator Controller
General Description
The MIC5156, MIC5157, and MIC5158 Super Low-Dropout
(LDO) Regulator Controllers are single IC solutions for high-
current low-dropout linear voltage regulation. Super LDO™
Regulators have the advantages of an external N-channel
power MOSFET as the linear pass element.
The MIC5156/7/8 family features a dropout voltage as low
as the R
DS(ON)
of the external power MOSFET multiplied by
the output current. The output current can be as high as the
largest MOSFETs can provide.
The MIC5156/7/8 family operates from 3V to 36V. The
MIC5156 requires an external gate drive supply to provide
the higher voltage needed to drive the gate of the external
MOSFET. The MIC5157 and MIC5158 each have an inter-
nal charge pump tripler to produce the gate drive voltage.
The tripler is capable of providing enough voltage to drive a
logic-level MOSFET to 3.3V output from a 3.5V supply and
is clamped to 17.5V above the supply voltage. The tripler
requires three external capacitors.
The regulator output is constant-current limited when the
controller detects 35mV across an optional external sense
resistor. An active-low open-collector flag indicates a low
voltage of 8% or more below nominal output. A shutdown
(low) signal to the TTL-compatible enable control reduces
controller supply current to less than 1µA while forcing the
output voltage to ground.
The MIC5156-3.3 and MIC5156-5.0 controllers have inter-
nally fixed output voltages. The MIC5156 [adjustable] output
is configured using two external resistors. The MIC5157 is a
fixed output controller which is externally configured to select
either 3.3V, 5.0V, or 12V. The MIC5158 can be configured
as a fixed 5V controller or programmed to any voltage from
1.3V to 36V using two external resistors.
The MIC5156 is available in an 8-pin DIP or SOIC. The
MIC5157 and MIC5158 are available in a 14-pin DIP or SOIC
which operate from –40°C to +85°C.
Features
4.5mA typical operating current
<1µA typical standby current
Low external parts count
Optional current limit (35mV typical threshold)
1% initial output voltage tolerance in most configurations
2% output voltage tolerance over temperature
Fixed output voltages of 3.3V, 5.0V (MIC5156)
Fixed output voltages of 3.3V, 5.0V, 12V (MIC5157)
Programmable (1.3 to 36V) with 2 resistors (MIC5156/8)
Internal charge pump voltage tripler (MIC5157/8)
Enable pin to activate or shutdown the regulator
Internal gate-to-source protective clamp
All versions available in DIP and SOIC
Ultrahigh current ultralow dropout voltage regulator
Constant high-current source
Low parts count 5.0V to 3.3V computer supply
Low noise/low-dropout SMPS post regulator
High-current, current-limited switch
Applications
Typical Applications
+12V
0.1µF
Enable
Shutdown
0.1µF
7
C
1.0µF
4
V
P
3
G
2
F
1
E
6
C
5
V
C
4
G
F
3
3
S
2
1
5
MIC5156-3.3
C –
V
D
G
D
MIC5157
V
D
G
C
D
S
5
V
IN
5V
3mΩ
47µF
6
7
8
V
OU T
3.3V, 10A
8
9
10
11 12 13
0.1µF
R
S
R
S
= 0.035V /I
LIMIT
SMP60N03-10L
C
L
*
47µF
*Improves transient
response to load changes
V
IN
(3.61Vmin.)
3mΩ
R
S
Enable
Shutdown
E
14
C
L
*
47µF
R
S
= 0.035V /I
LIMIT
*Improves transient
IRLZ44 (Logic Level MOSFET) response to load changes
47µF
V
OU T
3.3V, 10A
10A 5V to 3.3V Desktop Computer Regulator
Super LDO
is a trademark of Micrel, Inc.
10A Low-Dropout Voltage Regulator
Micrel, Inc. • 2180 Fortune Drive • San Jose, CA 95131 • USA • tel + 1 (408) 944-0800 • fax + 1 (408) 474-1000 • http://www.micrel.com
August 2005
1
MIC5156/5157/5158

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Description LDO Voltage Controllers Super LDO, Regulator-Selectable LDO Voltage Controllers Super LDO, Regulator-Adjustable LDO Voltage Controllers LDO Voltage Controllers Super LDO, Regulator-Adjustable LDO Voltage Controllers Super LDO, Regulator-Adjustable LDO Voltage Controllers Super LDO, Regulator-Adjustable
Is it Rohs certified? conform to conform to - conform to conform to conform to
Maker Microchip Microchip - Microchip Microchip Microchip
package instruction DIP, DIP, - DIP, DIP, SOP,
Reach Compliance Code compliant compliant - compliant compliant compliant
Factory Lead Time 6 weeks 13 weeks - 9 weeks 9 weeks 7 weeks
Analog Integrated Circuits - Other Types ANALOG CIRCUIT ANALOG CIRCUIT - ANALOG CIRCUIT ANALOG CIRCUIT ANALOG CIRCUIT
JESD-30 code R-PDIP-T14 R-PDIP-T8 - R-PDIP-T8 R-PDIP-T8 R-PDSO-G8
JESD-609 code e3 e3 - e3 e3 e4
Number of functions 1 1 - 1 1 1
Number of terminals 14 8 - 8 8 8
Maximum operating temperature 85 °C 85 °C - 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C - -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY - PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code DIP DIP - DIP DIP SOP
Package shape RECTANGULAR RECTANGULAR - RECTANGULAR RECTANGULAR RECTANGULAR
Package form IN-LINE IN-LINE - IN-LINE IN-LINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) NOT APPLICABLE NOT APPLICABLE - NOT APPLICABLE NOT APPLICABLE 260
Certification status Not Qualified Not Qualified - Not Qualified Not Qualified Not Qualified
Maximum supply voltage (Vsup) 36 V 36 V - 36 V 36 V 36 V
Minimum supply voltage (Vsup) 3 V 3 V - 3 V 3 V 3 V
Nominal supply voltage (Vsup) 5 V 5 V - 5 V 5 V 5 V
surface mount NO NO - NO NO YES
Temperature level INDUSTRIAL INDUSTRIAL - INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) - annealed Matte Tin (Sn) - annealed - Matte Tin (Sn) - annealed Matte Tin (Sn) - annealed Nickel/Palladium/Gold (Ni/Pd/Au)
Terminal form THROUGH-HOLE THROUGH-HOLE - THROUGH-HOLE THROUGH-HOLE GULL WING
Terminal pitch 2.54 mm 2.54 mm - 2.54 mm 2.54 mm 1.27 mm
Terminal location DUAL DUAL - DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT APPLICABLE NOT APPLICABLE - NOT APPLICABLE NOT APPLICABLE 40
width 7.62 mm 7.62 mm - 7.62 mm 7.62 mm 3.94 mm
length - 9.525 mm - 9.525 mm 9.525 mm 4.93 mm
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