High-Current Low-Dropout Regulators MIC29150/29300/29500/29750 hi

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High-Current Low-Dropout Regulators MIC29150/29300/29500/29750 hi

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MIC29150/29300/29500/29750
High-Current Low-Dropout Regulators
MIC29150/29300/29500/29750 high current, high accuracy, low-dropout voltage regulators. Using Micrel's proprietary Super PNP® process with pass element, these regulators feature 350mV 425mV (full load) typical dropout voltages very ground current. Designed high current loads, these devices also find applications lower current, extremely dropout-critical systems, where their tiny dropout voltage ground current values important attributes. MIC29150/29300/29500/29750 fully protected against overcurrent faults, reversed input polarity, reversed lead insertion, overtemperature operation, positive negative transient voltage spikes. Five fixed voltage versions feature logic level ON/OFF control error flag which signals whenever output falls regulation. Flagged states include input voltage (dropout), output current limit, overtemperature shutdown, extremely high voltage spikes input. MIC29xx1 MIC29xx2, ENABLE tied required ON/OFF control. MIC29150/29300/29500 available 3-pin 5-pin TO-220 surface mount TO-263 (D2Pak) packages. MIC29750 7.5A regulators available 3-pin 5-pin TO-247 packages. 1.5A, adjustable output MIC29152 available 5-pin power D-Pak (TO-252) package. applications with input voltage below, MIC37xxx LDOs. Data sheets support documentation found Micrel's site www.micrel.com.
Features
High current capability MIC29150/29151/29152/29153.1.5A MIC29300/29301/29302/29303. MIC29500/29501/29502/29503. MIC29750/29751/29752.7.5A Low-dropout voltage ground current Accurate guaranteed tolerance Extremely fast transient response Reverse-battery "Load Dump" protection Zero-current shutdown mode (5-pin versions) Error flag signals output out-of-regulation (5-pin versions) Also characterized smaller loads with industryleading performance specifications Fixed voltage adjustable versions
Applications
Battery powered equipment High-efficiency "Green" computer systems Automotive electronics High-efficiency linear lower supplies High-efficiency lost-regulator switching supply
Typical Application**
Fixed Output Voltage
Adjustable Output Voltage
(*See Minimum Load Current Section) **See Thermal Design Section
Super registered trademark Micrel, Inc.
Micrel Inc. 2180 Fortune Drive Jose, 95131 (408) 944-0800 (408) 474-1000 http://www.micrel.com
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Ordering Information
Part Number Standard MIC29150-3.3BT MIC29150-3.3BU MIC29150-5.0BT MIC29150-5.0BU MIC29150-12BT MIC29150-12BU MIC29151-3.3BT MIC29151-3.3BU MIC29151-5.0BT MIC29151-5.0BU MIC29151-12BT MIC29151-12BU MIC29152BT MIC29152BU MIC29153BT(3) MIC29153BU(3) MIC29300-3.3BT MIC29300-3.3BU MIC29300-5.0BT MIC29300-5.0BU MIC29300-12BT MIC29300-12BU MIC29301-3.3BT MIC29301-3.3BU MIC29301-5.0BT MIC29301-5.0BU MIC29301-12BT MIC29301-12BU MIC29302BT MIC29302BU MIC29303BT MIC29303BU MIC29500-3.3BT MIC29500-5.0BT MIC29501-3.3BT MIC29501-3.3BU MIC29501-5.0BT MIC29501-5.0BU MIC29502BT RoHS Compliant(2) MIC29150-3.3WT(2) MIC29150-3.3WU(2) MIC29150-5.0WT MIC29150-12WT
Junction Temp. Range(1) -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C
Voltage Adj. Adj. Adj. Adj. Adj. Adj. Adj. Adj. Adj. Adj.
Current 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 1.5A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 3.0A 5.0A 5.0A 5.0A 5.0A 5.0A 5.0A 5.0A
Package 3-Pin TO-220 3-Pin TO-263 3-Pin TO-220 3-Pin TO-263 3-Pin TO-220 3-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-252 5-Pin TO-220 5-Pin TO-263 3-Pin TO-220 3-Pin TO-263 3-Pin TO-220 3-Pin TO-263 3-Pin TO-220 3-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 3-Pin TO-220 3-Pin TO-220 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 5-Pin TO-220
MIC29150-5.0WU
MIC29150-12WU(2) MIC29151-3.3WT
MIC29151-3.3WU MIC29151-5.0WU MIC29151-12WT MIC29152WT(2) MIC29152WU(2) MIC29152WD
MIC29151-5.0WT(2)
MIC29151-12WU
Contact Factory Contact Factory MIC29300-3.3WT
-40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C
MIC29300-3.3WU MIC29300-5.0WU MIC29300-12WT
MIC29300-5.0WT(2)
MIC29300-12WU(2) MIC29301-3.3WT MIC29301-5.0WT
MIC29301-3.3WU
MIC29301-5.0WU(2) MIC29301-12WT(2) MIC29301-12WU MIC29302WT(2) MIC29302WU(2) MIC29303WT
MIC29303WU
MIC29500-3.3WT(2) MIC29500-5.0WT(2) MIC29501-3.3WT
MIC29501-3.3WU(2) MIC29501-5.0WT(2) MIC29501-5.0WU MIC29502WT(2)
October 2009
M9999-102309-A
Micrel, Inc.
Part Number Standard MIC29502BU MIC29503BT MIC29503BU MIC29750-3.3BWT MIC29750-5.0BWT MIC29751-3.3BWT MIC29751-5.0BWT MIC29752BWT
Note: Junction Temperature RoHS compliant with `high-melting solder' exemption. Special Order, Contact Factory
MIC29150/29300/29500/29750
Junction Temp. Range(1) -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C -40°C +125°C
RoHS Compliant(2) MIC29502WU(2) MIC29503WT(2) MIC29503WU
Voltage Adj. Adj. Adj. Adj.
Current 5.0A 5.0A 5.0A 7.5A 7.5A 7.5A 7.5A 7.5A
Package 5-Pin TO-263 5-Pin TO-220 5-Pin TO-263 3-Pin TO-247 3-Pin TO-247 5-Pin TO-247 5-Pin TO-247 5-Pin TO-247
Contact Factory Contact Factory Contact Factory Contact Factory MIC29752WWT
-40°C +125°C
Configuration
3-Pin TO-220 MIC29150/29300/29500
5-Pin TO-220 Fixed Voltage MIC29151/29301/29501/29751
5-Pin TO-220 Adjustable Voltage MIC29152/29302/29502
5-Pin TO-220 Adjustable with Flag MIC29153/29303/29503
3-Pin TO-247 (WT) MIC29750
5-Pin TO-247 Fixed Voltage (WT) MIC29751
5-Pin TO-247 Adjustable Voltage (WT) MIC29752
3-Pin TO-263 (D2Pak) (UT) MIC29150/29300
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
5-Pin TO-263 (D2Pak) Fixed Voltage MIC29151/29301/29501
5-Pin TO-263 (D2Pak) Adjustable Voltage MIC29302/29502
5-Pin TO-263 (D2Pak) Adjustable with Flag MIC29153/29303/29503
5-Pin TO-252 (D-Pak) Adjustable Voltage MIC29152
Description
Number TO-220 TO-247 TO-263 Name
INPUT: Supplies current output power device GND: also connected internally IC's ground D-PAK. OUTPUT: regulator output voltage
Description
Number Fixed TO-220 TO-247 TO-263 Number Adjustable TO-220 TO-247 TO-252 TO-263 Number Adj. with Flag TO-220 TO-247 TO-263 Name
ENABLE: CMOS compatible control input. Logic high enable, logic shutdown. INPUT: Supplies current output power device GND: also connected internally IC's ground D-PAK. OUTPUT: regulator output voltage ADJUST: Adjustable regulator feedback input that connects resistor voltage divider that placed from OUTPUT order output voltage. FLAG: Active error flag output signal that indicates output fault condition
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Absolute Maximum Ratings(1)
Input Supply Voltage (VIN)(1) -20V +60V Enable Input Voltage (VEN). -0.3V Lead Temperature (soldering, 5sec.). 260°C Power Dissipation .Internally Limited Storage Temperature Range .-65°C +150°C Rating. Note
Operating Ratings(2)
Operating Junction Temperature -40°C +125°C Maximum Operating Input Voltage .26V Package Thermal Resistance TO-220 (JC).2°C/W TO-263 (JC).2°C/W TO-247 (JC) .1.5°C/W TO-252 (JC).3°C/W TO-252 (JA) .56°C/W
Electrical Characteristics(4,13)
VOUT IOUT 10mA; 25°C, bold values indicate -40°C +125°C, unless noted.
Parameter Condition Units
Output Voltage Line Regulation Load Regulation Dropout Voltage
IOUT 10mA 10mA IOUT IFL, (VOUT IOUT 10mA, (VOUT VOUT 10mA IOUT 1.5A Output Voltage Temperature Coefficient. VOUT MIC29150 MIC29300 MIC29500 MIC29750 IOUT 100mA IOUT 750mA IOUT 1.5A IOUT 100mA IOUT 1.5A IOUT IOUT 250mA IOUT 2.5A IOUT IOUT 250mA IOUT IOUT 7.5A IOUT 750mA, VOUT IOUT 1.5A IOUT 1.5A, VOUT IOUT IOUT 2.5A, VOUT IOUT IOUT VOUT IOUT 7.5A
(5,9)
0.06
ppm/°C
Ground Current
MIC29150 MIC29300 MIC29500 MIC29750 Note
IGRNDDOGround Current Droupout
0.5V less than specified VOUT IOUT 10mA MIC29150 MIC29300 MIC29500 MIC29750 MIC29150 MIC29300 MIC29500 MIC29750 VOUT VOUT VOUT VOUT
10.0
Current Limit
October 2009
M9999-102309-A
Micrel, Inc.
Parameter Condition
MIC29150/29300/29500/29750
Units
Output Noise Voltage (10Hz 100kHz) 100mA Ground Current Shutdown Reference Reference Voltage Reference Voltage Adjust Bias Current Reference Voltage Temperature Coefficient Adjust Bias Current Temperature Coefficient
10µF 33µF MIC29150/1/2/3 only 0.4V MIC29xx2/MIC29xx3 1.228 1.215 1.203
(rms)
1.240
1.252 1.265 1.277
ppm/°C
(10)
nA/°C
Flag Output (Error Comparator) MIC29xx1/29xx3 Output Leakage Current Output Voltage Upper Threshold Voltage Lower Threshold Voltage Hysteresis ENABLE Input Input Logic Voltage (OFF) High (ON) Enable Input Current Regulator Output Current Shutdown 0.8V
(12)
Device 4.5V 250µA Device (11) Device (11) Device (11) MIC29xx1/MIC29xx2
0.01
1.00 2.00
October 2009
M9999-102309-A
Micrel, Inc.
Notes:
MIC29150/29300/29500/29750
Maximum positive supply voltage must limited duration (<100msec) duty cycle (1%). maximum continuous supply voltage 26V. Exceeding absolute maximum rating damage device. device guaranteed function outside operating rating. Devices sensitive. Handling precautions recommended. Specification packaged product only. Full load current (IFL) defined 1.5A MIC29150, MIC29300, MIC29500, 7.5A MIC29750 families. Dropout voltage defined input-to-output differential when output voltage drops normal value with VOUT applied VIN. VOUT (nominal) example, 4.3V 3.3V regulator regulator. Employ pulse-testing procedures current. Ground current regulator quiescent current. total current drawn from source load current plus ground current. Output voltage temperature coefficient defined worst case voltage change divided total temperature range.
Thermal regulation defined change output voltage time after change power dissipation applied, excluding load line regulation effects. Specifications a200mA load pulse pulse) 10ms. Comparator thresholds expressed terms voltage differential Adjust terminal below nominal reference voltage measured input. express these thresholds terms output voltage change, multiply error amplifier gain VOUT/VREF R2)/R2. example, programmed output voltage Error output guaranteed when output drops 95mV 5V/1.240V 384mV. Thresholds remain constant percent VOUT VOUT varied, with dropout warning occurring typically below nominal, 7.7% guaranteed. 0.8V 26V, VOUT When used dual supply systems where regulator load returned negative supply, output voltage must diode clamped ground.
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Typical Characteristics MIC2915x
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Typical Characteristics MIC2930x
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Typical Characteristics MIC2950x
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Typical Characteristics MIC2975x
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Functional Diagram
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750 Output Current, IOUT Output Voltage, VOUT Input Voltage, First, calculate power dissipation regulator from these numbers device parameters from this datasheet.
Application Information
MIC29150/29300/29500/29750 high performance low-dropout voltage regulators suitable moderate high-current voltage regulator applications. Their 350mV 425mV typical dropout voltage full load make them especially valuable battery powered systems high efficiency noise filters "post-regulator" applications. Unlike older NPNpass transistor designs, where minimum dropout voltage limited base-emitter voltage drop collector-emitter saturation voltage, dropout performance output these devices limited merely saturation voltage. trade-off low-dropout voltage varying base driver requirement. Micrel's Super PNP® process reduces this drive requirement merely load current. MIC29150/29300/29500/29750 family regulators fully protected from damage fault conditions. Current limiting provided. This limiting linear; output current under overload conditions constant. Thermal shutdown disables device when temperature exceeds 125°C maximum safe operating temperature. Transient protection allows device (and load) survival even when input voltage spikes between -20V +60V. When input voltage exceeds about 40V, over voltage sensor temporarily disables regulator. output structure these regulators allows voltages excess desired output voltage applied without reverse current flow. MIC29xx1 MIC29xx2 versions offer logic level ON/OFF control: when disabled, devices draw nearly zero current. additional feature this regulator family common pinout: design's current requirement change down same board layout, these regulators have identical pinouts.
MIC29XXX
VOUT
IOUT (1.01 VOUT Where ground current approximated IOUT. Then heat sink thermal resistance determined with this formula: JMAX
Where TJMAX 125°C between 2°C/W. heat sink significantly reduced applications where minimum input voltage known large compared with dropout voltage. series input resistor drop excessive voltage distribute heat between this resistor regulator. low-dropout properties Micrel Super PNP® regulators allow very significant reductions regulator power dissipation associated heat sink without compromising performance. When this technique employed, capacitor least 0.1µF needed directly between input regulator ground. Please refer Application Note Application Hint further details examples thermal design heat sink specification. With heat sink application, calculate junction temperature determine maximum power dissipation that will allowed before exceeding maximum junction temperature MIC29152. maximum power allowed calculated using thermal resistance (JA) D-Pak adhering following criteria design: copper 100mm2 copper area MIC29152. example, given expected maximum ambient temperature (TA) 75°C with 3.3V, VOUT 2.5V, IOUT 1.5A, first calculate expected using Equation (1); Next, calcualte junction temperature expected power dissipation. determine maximum power dissipation allowed that would exceed IC's maximum junction temperature (125°C) without useof heat sink =0.893W
Figure Linear regulators require only capacitors operation.
Thermal Design Linear regulators simple use. most complicated design parameters consider thermal characteristics. Thermal design requires following application-specific parameters: Maximum ambient temperature, October 2009
M9999-102309-A
Micrel, Inc. Capacitor Requirements stability minimum output noise, capacitor regulator output necessary. value this capacitor dependent upon output current; lower currents allow smaller capacitors. MIC29150/29300/29500/29750 regulators stable with following minimum capacitor values full load: Device Full Load Capacitor MIC29150.10µF MIC29300.10µF MIC29500.10µF MIC29750.22µF This capacitor need expensive type: aluminum electrolytics adequate. fact, extremely capacitors contribute instability. Tantalum capacitors recommended systems where fast load transient response important. Where regulator powered from source with high impedance, 0.1µF capacitor connected between Input recommended. This capacitor should have good characteristics above 250kHz. Minimum Load Current MIC29150-29750 regulators specified between finite loads. output current small, leakage currents dominate output voltage rises. following minimum load current swamps expected leakage current across operating temperature range: Device Minimum Load MIC29150.5mA MIC29300.7mA MIC29500.10mA MIC29750.10mA
MIC29150/29300/29500/29750 Adjustable Regulator Design
MIC29152BT
10µF 22µF
VOUT
Figure Adjustable Regulator with Resistors
adjustable regulator versions, MIC29xx2 MIC29xx3, allow programming output voltage anywhere between 1.25V 25V. resistors used. resistor values calculated
1.240
where VOUT desired output voltage. Figure shows component definition. Applications with widely varying load currents scale resistors draw minimum load current required proper operation (see "Minimum Load Current" section). Error Flag MIC29xx1 MIC29xx3 versions feature Error Flag, which looks output voltage signals error condition when this voltage drops below expected value. error flag open-collector output that pulls under fault conditions. sink 10mA. output voltage signifies number possible problems, including overcurrent fault (the device current limit) input voltage. flag output inoperative during overtemperature shutdown conditions. Enable Input MIC29xx1 MIC29xx2 versions feature enable (EN) input that allows ON/OFF control device. Special design allows "zero" current drain when device disabled-only microamperes leakage current flows. input TTL/CMOS compatible thresholds simple interfacing with logic, directly tied 30V. Enabling regulator requires approximately 20µA current.
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Package Information
3-Pin TO-220
5-Pin TO-220
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
5-Pin TO-263
3-Pin TO-263
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
5-Pin TO-247 (WT)
3-Pin TO-247 (WT)
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
5-Pin TO-252
MICREL, INC. 2180 FORTUNE DRIVE JOSE, 95131
(408) 944-0800 (408) 474-1000 http://www.micrel.com
information furnished Micrel this data sheet believed accurate reliable. However, responsibility assumed Micrel use. Micrel reserves right change circuitry specifications time without notification customer. Micrel Products designed authorized components life support appliances, devices systems where malfunction product reasonably expected result personal injury. Life support devices systems devices systems that intended surgical implant into body support sustain life, whose failure perform reasonably expected result significant injury user. Purchaser's sale Micrel Products life support appliances, devices systems Purchaser's risk Purchaser agrees fully indemnify Micrel damages resulting from such sale. 2009 Micrel, Incorporated.
October 2009
M9999-102309-A
Micrel, Inc.
MIC29150/29300/29500/29750
Revision History
Date 6/18/08 5/28/09 6/3/09 7/23/09 9/18/09 9/22/09 10/12/09 Change Description/Edits Locked document. M.Mclean Unlocked document, removed some styles, minor formatting. M.Galvan Fixed table font from 10pst pts, moved Typ. App. drwg front page Edited table diagrams, added descriptions. Added Circuit BOM. Text added Thermal Design section Removed Circuit Update drawings curves 072309_AMSr1 091809_AMS 092409_AMS Martha taken over Mike Revisions
October 2009
M9999-102309-A

High-Current Low-Dropout Regulators MIC29150/29300/29500/29750 hi

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