savin1芯片手册mic29302

1、MIC29150/29300/29500/29750High-Current Low-Dropout RegulatorsGeneral DescriptionThe MIC29150/29300/29500/29750 are high current, high accuracy, low-dropout voltage regulators. Using Micrels proprietary Super eta PNP process with a PNP pass element, these regulators feature 350mV to 425mV (full load)

2、 typical dropout voltages and very low ground current. Designed for high current loads, these devices also find applications in lower current, extremely low dropout-critical systems, where their tiny dropout voltage and ground current values are important attributes.The MIC29150/29300/29500/29750 ar

3、e fully protected against overcurrent faults, reversed input polarity, reversed lead insertion, overtemperature operation, and positive and negative transient voltage spikes. Five pin fixed voltage versions feature logic level ON/OFF control and an error flag which signals whenever the output falls

4、out of regulation. Flagged states include low input voltage (dropout), output current limit, overtemperature shutdown, and extremely high voltage spikes on the input.On the MIC29xx1 and MIC29xx2, the ENABLE pin may be tied to VIN if it is not required for ON/OFF control. The MIC29150/29300/29500 are

5、 available in 3-pin and 5-pin TO-220 and surface mount TO-263 (D2Pak) packages. The MIC29750 7.5A regulators are available in 3-pin andFeaturesHigh current capability MIC29150/29151/29152/29153.1.5AMIC29300/29301/29302/29303.3AMIC29500/29501/29502/29503.5AMIC29750/29751/297527.5ALow-dropout voltage

6、Low ground currentAccurate 1% guaranteed tolerance Extremely fast transient responseReverse-battery and “Load Dump” protection Zero-current shutdown mode (5-pin versions)Error flag signals output out-of-regulation (5-pin versions)Also characterized for smaller loads with industry- leading performanc

7、e specificationsFixed voltage and adjustable versionsApplicationsBattery powered equipmentHigh-efficiency “Green” computer systems Automotive electronicsHigh-efficiency linear lower suppliesHigh-efficiency lost-regulator for switching supply5-pin TO-247 packages.The 1.5A, adjustable outputMIC29152 i

8、s available in a 5-pin power D-Pak (TO-252) package.For applications with input voltage 6V or below, see MIC37xxx LDOs.Data sheets and support documentation can be found on Micrels web site at .Typical Application*Adjustable Output Voltage(*See Minimum Load Current Section)*See Thermal

9、 Design SectionFixed Output VoltageSuper eta PNP is a registered trademark of Micrel, Inc.Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 May 2010M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750Ordering InformationMay 20102M9

10、999-050510-BPart NumberJunction Temp.Range(1)40C to +125CVoltage3.3Current1.5APackage3-Pin TO-220StandardMIC29150-3.3BTRoHS Compliant(2)MIC29150-3.3WT(2)MIC29150-3.3BUMIC29150-3.3WU(2)40C to +125C3.31.5A3-Pin TO-263MIC29150-5.0BTMIC29150-5.0WT(2)40C to +125C51.5A3-Pin TO-220MIC29150-5.0BU MIC29150-1

11、2BT MIC29150-12BU MIC29151-3.3BT MIC29151-3.3BUMIC29151-5.0BTMIC29150-5.0WU(2) MIC29150-12WT(2) MIC29150-12WU(2) MIC29151-3.3WT(2) MIC29151-3.3WU(2)MIC29151-5.0WT(2)40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C512123.33.351.5A1.5A1.5A1.5A1.5A1.5A3-Pin TO-2633-Pin TO-2203-P

12、in TO-2635-Pin TO-2205-Pin TO-2635-Pin TO-220MIC29151-5.0BUMIC29151-5.0WU(2)40C to +125C51.5A5-Pin TO-263MIC29151-12BTMIC29151-12WT(2)40C to +125C121.5A5-Pin TO-220MIC29151-12BU MIC29152BT MIC29152BU MIC29153BT(3)MIC29153BU(3)MIC29151-12WU(2) MIC29152WT(2) MIC29152WU(2) MIC29152WD(2)Contact FactoryC

13、ontact Factory40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C12Adj. Adj. Adj. Adj.Adj.1.5A1.5A1.5A1.5A1.5A1.5A5-Pin TO-2635-Pin TO-2205-Pin TO-2635-Pin TO-2525-Pin TO-2205-Pin TO-263MIC29300-3.3BTMIC29300-3.3WT(2)40C to +125C3.33.0A3-Pin TO-220MIC29300-3.3BUMIC29300-3.3WU(2)

14、40C to +125C3.33.0A3-Pin TO-263MIC29300-5.0BTMIC29300-5.0WT(2)40C to +125C53.0A3-Pin TO-220MIC29300-5.0BU MIC29300-12BT MIC29300-12BU MIC29301-3.3BT MIC29301-3.3BU MIC29301-5.0BTMIC29301-5.0BUMIC29300-5.0WU(2) MIC29300-12WT(2) MIC29300-12WU(2) MIC29301-3.3WT(2) MIC29301-3.3WU(2) MIC29301-5.0WT(2)MIC

15、29301-5.0WU(2)40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C40C to +125C512123.33.3553.0A3.0A3.0A3.0A3.0A3.0A3.0A3-Pin TO-2633-Pin TO-2203-Pin TO-2635-Pin TO-2205-Pin TO-2635-Pin TO-2205-Pin TO-263MIC29301-12BTMIC29301-12WT(2)40C to +125C123.0A5-Pin TO-220MIC29301-12BUMIC29

16、301-12WU(2)40C to +125C123.0A5-Pin TO-263MIC29302BT MIC29302BU MIC29303BTMIC29303BUMIC29302WT(2) MIC29302WU(2) MIC29303WT(2)MIC29303WU(2)40C to +125C40C to +125C40C to +125C40C to +125CAdj. Adj. Adj.Adj.3.0A3.0A3.0A3.0A5-Pin TO-2205-Pin TO-2635-Pin TO-2205-Pin TO-263MIC29500-3.3BTMIC29500-3.3WT(2)40

17、C to +125C3.35.0A3-Pin TO-220MIC29500-5.0BTMIC29500-5.0WT(2)40C to +125C55.0A3-Pin TO-220MIC29501-3.3BTMIC29501-3.3WT(2)40C to +125C3.35.0A5-Pin TO-220MIC29501-3.3BUMIC29501-3.3WU(2)40C to +125C3.35.0A5-Pin TO-263MIC29501-5.0BTMIC29501-5.0WT(2)40C to +125C55.0A5-Pin TO-220MIC29501-5.0BUMIC29501-5.0W

18、U(2)40C to +125C55.0A5-Pin TO-263MIC29502BTMIC29502WT(2)40C to +125CAdj.5.0A5-Pin TO-220Micrel, Inc.MIC29150/29300/29500/29750Note:1. Junction Temperature2. RoHS compliant with high-melting solder exemption.3. Special Order, Contact FactoryPin Configuration3-Pin TO-220 (T) MIC29150/29300/295005-Pin

19、TO-220 Fixed Voltage (T) MIC29151/29301/29501/297515-Pin TO-220 Adjustable Voltage (T) MIC29152/29302/295025-Pin TO-220 Adjustable with Flag (T) MIC29153/29303/295033-Pin TO-247 (WT) MIC297505-Pin TO-247 Fixed Voltage (WT) MIC297515-Pin TO-247 Adjustable Voltage (WT) MIC297523-Pin TO-263 (D2Pak) (UT

20、) MIC29150/29300May 20103M9999-050510-BPart NumberJunction Temp.Range(1)VoltageCurrentPackageStandardRoHS Compliant(2)MIC29502BUMIC29502WU(2)40C to +125CAdj.5.0A5-Pin TO-263MIC29503BTMIC29503WT(2)40C to +125CAdj.5.0A5-Pin TO-220MIC29503BUMIC29503WU(2)40C to +125CAdj.5.0A5-Pin TO-263MIC29750-3.3BWTCo

21、ntact Factory40C to +125C3.37.5A3-Pin TO-247MIC29750-5.0BWTContact Factory40C to +125C57.5A3-Pin TO-247MIC29751-3.3BWTContact Factory40C to +125C3.37.5A5-Pin TO-247MIC29751-5.0BWTContact Factory40C to +125C57.5A5-Pin TO-247MIC29752BWTMIC29752WWT(2)40C to +125CAdj.7.5A5-Pin TO-247Micrel, Inc.MIC29150

22、/29300/29500/297505-Pin TO-263 (D2Pak) Fixed Voltage (U) MIC29151/29301/295015-Pin TO-263 (D2Pak) Adjustable Voltage (U) MIC29302/295025-Pin TO-263 (D2Pak) Adjustable with Flag (U) MIC29153/29303/295035-Pin TO-252 (D-Pak) Adjustable Voltage (D) MIC29152Pin DescriptionPin DescriptionMay 20104M9999-05

23、0510-BPin Number FixedTO-220 TO-247 TO-263Pin Number Adjustable TO-220TO-247 TO-252 TO-263Pin Number Adj. with Flag TO-220TO-247 TO-263Pin Name11ENABLE: CMOS compatible control input. Logic high = enable, logic low = shutdown.222INPUT: Supplies the current to the output power device3, TAB3, TAB3, TA

24、BGND: TAB is also connected internally to the ICs ground on D-PAK.444OUTPUT: The regulator output voltage55ADJUST: Adjustable regulator feedback input that connects to the resistor voltage divider that is placed from OUTPUT to GND in order to set the output voltage.51FLAG: Active low error flag outp

25、ut signal that indicates an output fault conditionPin Number TO-220 TO-247 TO-263Pin Name1INPUT: Supplies the current to the output power device2GND: TAB is also connected internally to the ICs ground on D-PAK.3OUTPUT: The regulator output voltageMicrel, Inc.MIC29150/29300/29500/29750Absolute Maximu

26、m Ratings(1)Input Supply Voltage (VIN)(1)V to +60VEnable Input Voltage (VEN)0.3V to VINLead Temperature (soldering, 5sec.)260CPower DissipationInternally LimitedStorage Temperature Range65C to +150CESD Rating.Note 3Operating Ratings(2)Operating Junction Temperature40C to +125CMaximum Operating Input

27、 VoltageVPackage Thermal ResistanceTO-220 (JC)2C/WTO-263 (JC)2C/WTO-247 (JC)1.5C/WTO-252 (JC)3C/WTO-252 (JA)56C/WElectrical Characteristics(4,13)VIN = VOUT + 1V; IOUT = 10mA; TJ = 25C, bold values indicate 40C TJ +125C, unless noted.May 20105M9999-050510-BParameterConditionMinTypMaxUnitsOutput Volta

28、geIOUT = 10mA11%10mA IOUT IFL, (VOUT + 1V) VIN 26V (5)22%Line RegulationIOUT = 10mA, (VOUT + 1V) VIN 26V0.060.5%Load RegulationVIN = VOUT + 5V, 10mA IOUT 1.5A (5,9)0.21%VOTDropout VoltageGround CurrentOutput Voltage (9)Temperature Coefficient.VOUT = -1% (6)MIC29150IOUT = 100mA IOUT = 750mA IOUT = 1.

29、5AMIC29300IOUT = 100mA IOUT = 1.5A IOUT = 3AMIC29500IOUT = 250mA IOUT = 2.5A IOUT = 5AMIC29750IOUT = 250mA IOUT = 4A IOUT = 7.5A20802203508025037012525037080270425822103715703512010020060017560025060020075020355075ppm/CmVmA mA mA mAMIC29150 MIC29300 MIC29500MIC29750Note 8IOUT = 750mA, VIN = VOUT + 1

30、V IOUT = 1.5AIOUT = 1.5A, VIN = VOUT + 1V IOUT = 3AIOUT = 2.5A, VIN = VOUT + 1V IOUT = 5AIOUT = 4A, VIN = VOUT + 1V IOUT = 7.5AIGRNDDOGround Pin Current at DroupoutVIN = 0.5V less than specified VOUT IOUT = 10mA MIC29150MIC29300 MIC29500 MIC297503.1mA mA mA mACurrent LimitMIC29150 MIC29300

31、MIC29500 MIC29750VOUT = 0V (7) VOUT = 0V (7) VOUT = 0V (7) VOUT = 0V (7)10.015A A A AMicrel, Inc.MIC29150/29300/29500/29750May 20106M9999-050510-BParameterConditionMinTypMaxUnitsen, Output Noise Voltage(10Hz to 100kHz) IL = 100mAGround Current in ShutdownCL = 10F CL = 33FMIC29150/1

32、/2/3 only VEN = 0.4V40026021030V (rms)A AReferenceMIC29xx2/MIC29xx3Reference VoltageReference Voltage Adjust PinBias CurrentReference Voltage Temperature Coefficient(10)1.2281.2151.2031.24040201.2521.2651.27780120V VVnA ppm/CAdjust Pin Bias Current Temperature Coefficient0.1nA/CFlag Output (Error Co

33、mparator) MIC29xx1/29xx3Output Leakage CurrentVOH = 26V0.011.002.00AOutput Low VoltageDevice set for 5V, VIN = 4.5V IOL = 250A220300400mVUpper Threshold VoltageDevice set for 5V (11)402560mVLower Threshold VoltageDevice set for 5V (11)7595140mVHysteresisDevice set for 5V (11)15mVENABLE InputMIC29xx1

34、/MIC29xx2Input Logic Voltage Low (OFF)High (ON)2.40.8VEnable Pin Input CurrentVEN = 26V100600750AVEN = 0.8V0.724ARegulator Output Current in Shutdown(12)10500AMicrel, Inc.MIC29150/29300/29500/29750Notes:1.Maximum positive supply voltage of 60V must be of limited duration (100msec) and duty cycle (1%

35、). The maximum continuous supply voltage is 26V. Exceeding the absolute maximum rating may damage the device.The device is not guaranteed to function outside its operating rating. Devices are ESD sensitive. Handling precautions recommended.Specification for packaged product only.Full load current (I

36、FL) is defined as 1.5A for the MIC29150, 3A for the MIC29300, 5A for the MIC29500, and 7.5A for the MIC29750 families.Dropout voltage is defined as the input-to-output differential when the output voltage drops to 99% of its normal value with VOUT + 1V applied to VIN.VIN = VOUT (nominal) + 1V. For e

37、xample, use VIN = 4.3V for a 3.3V regulator or use 6V for a 5V regulator. Employ pulse-testing procedures to pin current.Ground pin current is the regulator quiescent current. The total current drawn from the source is the sum of the load current plus the ground pin current.Output voltage temperatur

38、e coefficient is defined as the worst case voltage change divided by the total temperature range.Thermal regulation is defined as the change in output voltage at a time T after a change in power dissipation is applied, excluding load or line regulation effects. Specifications are for a200mA load pul

39、se at VIN = 20V (a 4W pulse) for T = 10ms.Comparator thresholds are expressed in terms of a voltage differential at the Adjust terminal below the nominal reference voltage measured at 6V input. To express these thresholds in terms of output voltage change, multiply by the error amplifier gain = VOUT

40、/VREF = (R1 + R2)/R2. For example, at a programmed output voltage of 5V, the Error output is guaranteed to go low when the output drops by 95mV x 5V/1.240V = 384mV. Thresholds remain constant as a percent of VOUT as VOUT is varied, with the dropout warning occurring at typically 5% below nominal, 7.

41、7% guaranteed.VEN 0.8V and VIN 26V, VOUT = 0.When used in dual supply systems where the regulator load is returned to a negative supply, the output voltage must be diode clamped to ground...3.May 20107M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750Typical Characteristics

42、 MIC2915xMay 20108M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750May 20109M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750Typical Characteristics MIC2930xMay 201010M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750May 201011M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750Typical Chara

43、cteristics MIC2950xMay 201012M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750May 201013M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750Typical Characteristics MIC2975xMay 201014M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750May 201015M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750F

44、unctional DiagramMay 201016M9999-050510-BMicrel, Inc.MIC29150/29300/29500/29750Application InformationOutput Current, IOUT Output Voltage, VOUTInput Voltage, VINTheMIC29150/29300/29500/29750arehighperformance low-dropout voltage regulators suitable forallmoderatetohigh-currentvoltageregulatorFirst,

45、we calculate the power dissipation of the regulator from these numbers and the device parameters from this datasheet.PD = IOUT (1.01 VIN - VOUT )Where the ground current is approximated by 1% of IOUT. Then the heat sink thermal resistance is determined with this formula:applications. Their 350mV to

46、425mV typical dropout voltage at full load make them especially valuable in battery powered systems and as high efficiency noise filters in “post-regulator” applications. Unlike older NPN-pass transistor designs, where the minimum dropout voltage is limited by the base-emitter voltage drop and colle

47、ctor-emitter saturation voltage, dropout performance of the PNP output of these devices is limited merely by the low VCE saturation voltage.A trade-off for the low-dropout voltage is a varying base driver requirement. But Micrels Super eta PNP process reduces this drive requirement to merely 1% of t

48、he load current.The MIC29150/29300/29500/29750 family of regulators are fully protected from damage due to fault conditions. Current limiting is provided. This limiting is linear; output current under overload conditions is constant. Thermal shutdown disables the device when the die temperature= TJM

49、AX - TA-(q+ q)qSAJCCSPDWhere TJMAX 125C and CS is between 0 and 2C/W.The heat sink may be significantly reduced in applications where the minimum input voltage is known and is large compared with the dropout voltage. Use a series input resistor to drop excessive voltage and distribute the heat betwe

50、en this resistor and the regulator. The low-dropout properties of Micrel Super eta PNP regulators allow very significant reductions in regulator power dissipation and the associated heat sink without compromising performance. When this technique is employed, a capacitor of at least 0.1F is needed di

51、rectly between the input and regulator ground.Please refer to Application Note 9 and Application Hint 17 for further details and examples on thermal design and heat sink specification.With no heat sink in the application, calculate the junction temperature to determine the maximum power dissipation

52、that will be allowed before exceeding the maximum junction temperature of the MIC29152. The maximum power allowed can be calculated using theexceedsthe125Cmaximumsafeoperatingtemperature. Transient protection allows device (and load) survival even when the input voltage spikesbetween 20V and +60V. When the input voltage exceeds about 35V to 40V, the over voltage sensor temporarily disables the regulator. The output structure of these regulators allows voltages in excess of the desired output voltage to be applied without reverse current flow. MIC29x