MIC2940A-3.3BT

MIC2940A/41A 1.25A Low Dropout Voltage Regulator Features General Description • • • • • • • • The MIC2940A and MIC2941A are “bulletproof” efficient voltage regulators with very low dropout voltage (typically 40 mV at light loads and 350 mV at 1A), and low quiescent current (240 μA typical). The quiescent current of the MIC2940A increases only slightly in dropout, thus prolonging battery life. Key MIC2940A features include protection against reversed battery, fold-back current-limiting, and automotive “load dump” protection (60V positive transient). High Output Voltage Accuracy Guaranteed 1.25A Output Low Quiescent Current Low Dropout Voltage Extremely Tight Load and Line Regulation Very Low Temperature Coefficient Current and Thermal Limiting Input Can Withstand –20V Reverse Battery and +60V Positive Transients • Logic-Controlled Electronic Shutdown • Output Programmable from 1.24V to 26V (MIC2941A) • Available in TO-220-3, TO-263-3, TO-220-5, and TO-263-5 Packages Applications • • • • • • • • • The MIC2940A is available in both fixed voltage (3.3V, 5V, and 12V) and adjustable voltage configurations. The MIC2940A-xx devices are three pin, fixed-voltage regulators. A logic-compatible shutdown input is provided on the adjustable MIC2941A, which enables the regulator to be switched on and off. Battery-Powered Equipment Cellular Telephones Laptop, Notebook, and Palmtop Computers PCMCIA VCC and VPP Regulation/Switching Barcode Scanners Automotive Electronics SMPS Post-Regulator/DC-to-DC Modules Voltage Reference High Efficiency Linear Power Supplies Package Types MIC2940A-X.XWT TO-220-3 (T) (Top View) MIC2940A-X.XWU TO-263-3 (U) (Top View) 1 1 2 2 3 3  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2941AWU TO-263-5 (U) (Top View) 1 2 3 4 MIC2941AWT TO-220-5 (T) (Top View) 5 1 2 3 4 5 DS20006000B-page 1 MIC2940A/41A Typical Application Circuits MIC2940A-5.0 FIXED +5V REGULATOR MIC2941A ADJUSTABLE REGULATOR V IN +VIN VOUT VIN +VIN VOUT = 5V V OUT + V OUT S HUTDOWN INPUT 10μF 1.2V SHUTDOWN OFF GND AD JU S T R1 100 pF 26V 22μF ON 1.23V GND R1 V OUT = V R E F x (1 + ) R2 MIC2941A WIDE INPUT VOLTAGE RANGE CURRENT-LIMIT VREF R2 MIC2941A 5V OR 3.3V SELECTABLE REGULATOR WITH SHUTDOWN +V IN +5V to +7V V IN VOUT +V IN V OUT = V IN V CC OUT VOUT SHUTDOWN INPUT SHUTDOWN OFF + ON 100pF GND GND ADJ 300kΩ 1% 10μF ADJUST MINIMUM INPUT-OUTPUT VOLTAGE RANGES FROM 40MV TO 400MV, DEPENDING ON LOAD CURRENT DS20006000B-page 2 5V 3.3V 470 kΩ 220kΩ 1% 180kΩ 1% 2N2222 Adjust Pin Low = Enable Output. Q1 ON = 3.3V, Q1 OFF = 5.0V.  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A Functional Block Diagram FEEDBACK IN Q15A R18 NŸ Q15A Q24 Q26 Q25 OUT Q9 Q3 R11 18 NŸ Q6 Q4 Q40 R30 30 NŸ Q16 R27 R17 NŸ Q14 R11 20.6 NŸ V TAP Q17 R28 Q2 R1 NŸ R2 NŸ Q8 Q5 C1 20 pF Q1 10 Q42 SENSE Q7 Q20 R10 150 NŸ R8 NŸ Q22 Q21 Q23 C2 40 pF Q13 R15 NŸ R9 NŸ R6 140 NŸ R5 180 NŸ Q12 Q41 R12 110 NŸ Q11 R13 100 NŸ R14 350 NŸ Q29 Q18 R3 NŸ R16 NŸ R17 Ÿ Q19 Q28 R4 NŸ 5Ÿ NŸ Q30 NŸ Q31 5NŸ R22 NŸ Q36 Q37 SHDN R24 NŸ ERROR Q34 Q38 R26 NŸ DENOTES CONNECTION ON FIXED VOLTAGE VERSIONS ONLY R25 NŸ Q39  2018 - 2022 Microchip Technology Inc. and its subsidiaries GND DS20006000B-page 3 MIC2940A/41A 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Power Dissipation (PD).............................................................................................................. Internally Limited, Note 1 Input Supply Voltage ................................................................................................................................... –20V to +60V Adjust Input Voltage (Note 2, Note 3)......................................................................................................... –1.5V to +26V Shutdown Input Voltage ............................................................................................................................. –0.3V to +30V Error Comparator Output Voltage............................................................................................................... –0.3V to +30V Operating Ratings ‡ Input Supply Voltage (Note 4) ....................................................................................................................... +2V to +26V † Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended periods may affect device reliability. ‡ Notice: The device is not guaranteed to function outside its operating ratings. Note 1: The maximum allowable power dissipation of any TA (ambient temperature) is PD(max) = (TJ(max) – TA)/θJA. Exceeding the maximum allowable power dissipation will result in excessive die temperature, and the regulator will go into thermal shutdown. 2: Circuit of MIC2941A Adjustable Regulator in the Typical Application Circuits section (upper right) with R1 ≥ 150 kΩ. VSHUTDOWN ≥ 2V and VIN ≤ 26V, VOUT = 0. 3: 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. 4: Across the full operating temperature, the minimum input voltage range for full output current is 4.3V to 26V. Output will remain in regulation at lower output voltages and low current loads down to an input of 2V at 25°C. ELECTRICAL CHARACTERISTICS Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A is programmed to output 5V and has VSHUTDOWN 0.6V. Parameter Output Voltage Accuracy Output Voltage Temperature Coefficient Symbol VO ΔVO/ΔT Line Regulation Load Regulation Dropout Voltage, Note 3 DS20006000B-page 4 ΔVO/VO VIN – VO Min. Typ. Max. –1 — 1 –2 — 2 –2.5 — 2.5 — 20 100 — 0.06 0.50 — 0.04 0.16 — — 0.20 — 60 150 — — 180 — 200 250 — — 320 — 350 450 — — 600 — 400 600 Units Conditions — % — 5mA ≤ IL ≤ 1A ppm/°C % Note 1 IO = 10 mA, (VOUT + 1V) ≤ VIN ≤ 26V IL = 5 mA to 1.25A IL = 5 mA to 1A, Note 2 IL = 5 mA mV IL = 250 mA IL = 1000 mA IL = 1250 mA  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A is programmed to output 5V and has VSHUTDOWN 0.6V. Parameter Ground Pin Current, Note 4 Ground Pin Current at Dropout, Note 4 Current-Limit Thermal Regulation Output Noise Voltage (10 Hz to 100 kHz) IL = 100 mA Symbol Min. Typ. Max. Units — 240 500 µA — 3 4.5 — — 6 — 22 35 — — 45 — 35 70 IGNDDO — 330 600 ILIMIT — 1.6 ΔVO/ΔPD — 0.05 — 400 — — 260 — 1.223 1.235 1.247 1.210 — 1.260 1.204 — 1.266 — 20 40 — — 60 IGND en Conditions IL = 5 mA IL = 250 mA mA IL = 1000 mA IL = 1250 mA µA VIN = 0.5V less than designed VOUT (VOUT 3.3), IL = 5 mA 3.5 A VOUT = 0V, Note 5 0.2 %/W µVRMS Note 6 CL = 10 µF CL = 33 µF Electrical Characteristics for MIC2941A Only Reference Voltage VREF V Note 7 nA — Adjust Pin Bias Current IBIAS Reference Voltage Temperature Coefficient ΔVREF/ΔT — 20 — ppm/°C — Adjust Pin Bias Current Temperature Coefficient ΔIBIAS/ΔT — 0.1 — nA/°C —  2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006000B-page 5 MIC2940A/41A ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: Limits in standard typeface are for TJ = +25°C and limits in boldface apply over the full operating temperature range. Unless otherwise specified, VIN = VOUT + 1V, IL = 1000 mA, CL = 10 μF. The MIC2941A is programmed to output 5V and has VSHUTDOWN 0.6V. Parameter Symbol Min. Typ. Max. VIL — 1.3 0.7 Units Conditions Shutdown Input Input Logic Voltage Shutdown Pin Input Current Regulator Output Current in Shutdown Note 1: 2: 3: 4: 5: 6: 7: 8: VIH ISHDN IOUT(SHDN) 2.0 — — — 30 50 — — 100 — 450 600 — — 750 — 3 30 — — 60 V Low (ON) High (OFF) VSHUTDOWN = 2.4V µA VSHUTDOWN = 26V µA Note 8 Output voltage temperature coefficient is defined as the worst case voltage change divided by the total temperature range. Regulation is measured at constant junction temperature using low duty cycle pulse testing. Changes in output voltage due to heating effects are covered by the thermal regulation specification. Dropout voltage is defined as the input to output differential at which the output voltage drops 100 mV below its nominal value measured at 1V differential. At low values of programmed output voltage, the minimum input supply voltage of 4.3V over temperature must be taken into account. 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. The MIC2940A features fold-back current limiting. The short-circuit (VOUT = 0V) current-limit is less than the maximum current with normal output voltage. 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 a 200 mA load pulse at VIN = 20V (a 4W pulse) for T = 10 ms. VREF ≤ VOUT ≤ (VIN – 1 V), 4.3V ≤ VIN 26V, 5 mA < IL ≤ 1.25A, TJ ≤ TJ(MAX). 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. DS20006000B-page 6  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A TEMPERATURE SPECIFICATIONS (Note 1) Parameters Sym. Min. Typ. Max. Units Conditions Storage Temperature Range TS –65 — +150 °C Junction Operating Temperature Range TJ –40 — +125 °C — Lead Temperature — — — +260 °C Soldering, 5s Thermal Resistance TO-220 JC — 2 — °C/W — Thermal Resistance TO-263 JC — 2 — °C/W — Temperature Ranges — Package Thermal Resistances Note 1: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the maximum allowable power dissipation will cause the device operating junction temperature to exceed the maximum +125°C rating. Sustained junction temperatures above +125°C can impact the device reliability.  2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006000B-page 7 MIC2940A/41A 2.0 Note: TYPICAL PERFORMANCE CURVES The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. 40 GROUND CURRENT (mA) DROPOUT VOLTAGE (mV) 500 400 300 200 100 0 0.00 0.25 0.50 0.75 1.00 OUTPUT CURRENT (A) FIGURE 2-1: Current. 1.25 Dropout Voltage vs. Output 10 0.1 11 Ground Current vs. Output GROUND CURRENT (μA) 400 800 600 400 ILOAD = 1.25A 200 300 200 100 0 0 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) FIGURE 2-2: Temperature. Dropout Voltage vs. 6 FIXED 5V ILOAD = 5mA 0 FIGURE 2-5: Voltage. 1 2 3 4 5 6 7 SUPPLY VOLTAGE (V) 8 Ground Current vs. Supply GROUND CURRENT (mA) 50 OUTPUT VOLTAGE (V) 5 40 4 ILOAD = 5mA 30 3 20 2 ILOAD = 1.25A 10 1 0 0 100 1000 10000 10A OUTPUT CURRENT (mA) FIGURE 2-4: Current. 1000 DROPOUT VOLTAGE (mV) 1 0 1 2 3 4 5 INPUT VOLTAGE (V) FIGURE 2-3: DS20006000B-page 8 6 Dropout Characteristics. 0 FIGURE 2-6: Voltage. FIXED 3.3V DEVICE ILOAD = 1.25A 0 2 4 6 8 INPUT VOLTAGE (V) 10 Ground Current vs. Supply  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A 3.40 3.38 3.36 0.30 3.34 3.32 3.30 0.20 0.10 ILOAD = 5mA 0.00 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) FIGURE 2-7: Temperature. OUTPUT VOLTAGE (V) GROUND CURRENT (mA) 0.40 Ground Current vs. 3.28 3.26 3.24 3.22 3.20 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) FIGURE 2-10: vs. Temperature. 1.8 1.6 1.4 1.2 1.4 1.2 1.0 ILOAD = 100mA VOUT = VNOMINAL – 0.5V CURRENT (A) 2.0 1.8 1.6 GROUND CURRENT (mA) 2.0 Fixed 3.3V Output Voltage 1.0 0.8 0.6 VOUT = 0V 0.4 0.2 0.4 0.2 FIXED 3.3V VERSION 3 SAMPLES 0.0 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) 0.0 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) 0.8 0.6 FIGURE 2-8: Temperature. Ground Current vs. FIGURE 2-11: Short-Circuit and Maximum Current vs. Temperature. 40 1000 ILOAD = 1.25A 30 20 10 ILOAD = 100mA 0 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) FIGURE 2-9: Temperature. Ground Current vs.  2018 - 2022 Microchip Technology Inc. and its subsidiaries GROUND CURRENT (μA) GROUND CURRENT (mA) 50 800 RLOAD = 100 600 400 200 0 -200 -30 FIGURE 2-12: Voltage. -20 -10 0 10 20 INPUT VOLTAGE (V) 30 Ground Current vs. Input DS20006000B-page 9 MIC2940A/41A 50 ADJUST PIN CURRENT (nA) ENABLE CURRENT (μA) 125 40 100 VE N = 5V 30 75 20 50 VE N = 2V 10 25 0 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) 0 -60 -30 0 30 60 90 120 150 TEMPERATURE (°C) 2.0 -500 1.5 1.0 5mA 0.5 0.0 -0.5 -5 COUT = 10 μF 20 COUT = 10 μF 0 INPUT (V) 10 -40 0 5 TIME (ms) OUTPUT (mV) COUT = 100 μF 0 -100 DS20006000B-page 10 4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 TIME (ms) FIGURE 2-17: 200 FIGURE 2-15: 6 10 Load Transient. 2.0 -200 1.5 1.0 5mA 0.5 0.0 -0.5 -5 8 Line Transient. 20 10 COUT = 100 μF 0 -10 10 INPUT (V) OUTPUT (mV) OUTPUT (A) 40 -20 FIGURE 2-14: 100 FIGURE 2-16: MIC2941A Adjust Pin Current vs. Temperature. OUTPUT (mV) OUTPUT (mV) 750 500 250 0 -250 OUTPUT (A) FIGURE 2-13: MIC2941A Shutdown Current vs. Temperature. ILOAD = 5mA 0 5 TIME (ms) Load Transient. 10 8 6 4 -0.2 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 TIME (ms) FIGURE 2-18: Line Transient.  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A 1 0.1 FIGURE 2-19: Frequency. 1x106 100x103 10x103 1x103 1x100 0.01 100x100 ILOAD = 10mA 10x100 OUTPUT IMPEDANCE ( ) 10 FREQUENCY (Hz) Output Impedance vs.  2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006000B-page 11 MIC2940A/41A 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE MIC2940A Pin Number MIC2941A Pin Number Pin Name 1 4 Input 2 3 Ground Ground. 3 5 Output Regulated output voltage. — 1 Adjust Adjust (input): Connect to an external resistor voltage divider to set the output voltage. — 2 DS20006000B-page 12 Description Unregulated input supply. Shutdown Shutdown/Enable (input): Logic level low = Enable. Logic level high = Shutdown.  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A 4.0 APPLICATION INFORMATION 4.1 External Capacitors A 10 μF (or greater) capacitor is required between the MIC2940A output and ground to prevent oscillations due to instability. Most types of tantalum or aluminum electrolytics will be adequate; film types will work, but are costly and therefore not recommended. Many aluminum electrolytics have electrolytes that freeze at about –30°C, so solid tantalums are recommended for operation below –25°C. The important parameters of the capacitor are an effective series resistance of about 5Ω or less and a resonant frequency above 500 kHz. The value of this capacitor may be increased without limit. At lower values of output current, less output capacitance is required for output stability. The capacitor can be reduced to 3.3 μF for current below 100 mA or 2.2 μF for currents below 10 mA. Adjusting the MIC2941A to voltages below 5V runs the error amplifier at lower gains so that more output capacitance is needed. For the worst-case situation of a 1.25A load at 1.23V output (Output shorted to Adjust) a 22 μF (or greater) capacitor should be used. The MIC2940A will remain stable and in regulation with load currents ranging from 5 mA on up to the full 1.25A rating. The external resistors of the MIC2941A version may be scaled to draw this minimum load current. A 0.22 μF capacitor should be placed from the MIC2940A input to ground if there is more than 10 inches of wire between the input and the AC filter capacitor or if a battery is used as the input. 4.2 Programming the Output Voltage (MIC2941A) The MIC2941A may be programmed for any output voltage between its 1.235V reference and its 26V maximum rating. An external pair of resistors is required, as shown in the MIC2941A Adjustable Regulator Typical Application Circuit. EQUATION 4-1: V OUT = V REF   1 + R1 ------- – I FB  R1  R2 Where: VREF = The nominal 1.235V reference voltage. IFB = The adjust pin bias current (nom. 20 nA). The minimum recommended load current of 1 μA forces an upper limit of 1.2 MΩ on the value of R2, if the regulator must work with no load (a condition often found in CMOS in standby), IFB will produce a –2% typical error in VOUT which may be eliminated at room temperature by trimming R1. For better accuracy, choosing R2 = 100 kΩ reduces this error to 0.17%  2018 - 2022 Microchip Technology Inc. and its subsidiaries while increasing the resistor program current to 12 μA. Because the MIC2941A typically draws 100 μA at no load with SHUTDOWN open-circuited, this is a negligible addition. 4.3 Reducing Output Noise In reference applications, it may be advantageous to reduce the AC noise present at the output. One method is to reduce the regulator bandwidth by increasing the size of the output capacitor. This is relatively inefficient, as increasing the capacitor from 1 μF to 220 μF only decreases the noise from 430 μV to 160 μVRMS for a 100 kHz bandwidth at 5V output. Noise can be reduced by a factor of four with the MIC2941A by adding a bypass capacitor across R1. EQUATION 4-2: 1 C BYPASS = -----------------------------------------2  R1  200Hz Pick a bypass capacitor of about 0.01 µF. When doing this, the output capacitor must be increased to 22 μF to maintain stability. These changes reduce the output noise from 430 μV to 100 μVRMS for a 100 kHz bandwidth at 5V output. With the bypass capacitor added, noise no longer scales with output voltage so that improvements are more dramatic at higher output voltages. 4.4 Automotive Applications The MIC2940A is ideally suited for automotive applications for a variety of reasons. It will operate over a wide range of input voltages with very low dropout voltages (40 mV at light loads), and very low quiescent currents (240 μA typical). These features are necessary for use in battery powered systems, such as automobiles. It is a “bulletproof” device with the ability to survive both reverse battery (negative transients up to 20V below ground), and load dump (positive transients up to 60V) conditions. A wide operating temperature range with low temperature coefficients is yet another reason to use these versatile regulators in automotive designs. 4.75V OUTPUT VOLTAGE ERROR NOT * VALID NOT * VALID 5V INPUT VOLTAGE FIGURE 4-1: 1.3V ERROR Output Timing. DS20006000B-page 13 MIC2940A/41A 5.0 PACKAGING INFORMATION 5.1 Package Marking Information TO-220* (Fixed) Example XXXXXXXX X.XXX YYWW WNNNP TO-263* (Fixed) MIC2940A 3.3WT 2134 4KL5P Example XXXXXXXX XXXX YYWW WNNNP Legend: XX...X Y YY WW NNN e3 * MIC2940A 12WU 2212 2K0BP TO-220* (Adj.) XXXX XXX WNNNP TO-263* (Adj.) XXXX XXX WNNNP Example 2941 AWT 8C43P Example 2941 AWU 39G1P Product code or customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC® designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. ●, ▲, ▼ Pin one index is identified by a dot, delta up, or delta down (triangle mark). Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. Package may or may not include the corporate logo. Underbar (_) and/or Overbar (‾) symbol may not be to scale. Note: If the full seven-character YYWWNNN code cannot fit on the package, the following truncated codes are used based on the available marking space: 6 Characters = YWWNNN; 5 Characters = WWNNN; 4 Characters = WNNN; 3 Characters = NNN; 2 Characters = NN; 1 Character = N DS20006000B-page 14  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A 3-Lead TO-220 Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging.  2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006000B-page 15 MIC2940A/41A 3-Lead TO-263 Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging. DS20006000B-page 16  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A 5-Lead TO-220 Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging.  2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006000B-page 17 MIC2940A/41A 5-Lead TO-263 Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging. DS20006000B-page 18  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A APPENDIX A: REVISION HISTORY Revision A (April 2018) • Converted Micrel document MIC2940A/41A to Microchip data sheet DS20006000A. • Minor text changes throughout. • Corrected bold values in Electrical Characteristics table. Revision B (February 2022) • Updated the Package Marking Information drawings with the most current marking information.  2018 - 2022 Microchip Technology Inc. and its subsidiaries DS20006000B-page 19 MIC2940A/41A NOTES: DS20006000B-page 20  2018 - 2022 Microchip Technology Inc. and its subsidiaries MIC2940A/41A PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office. Device -X.X X X -XX Part No. Output Voltage Junction Temp. Range Package Media Type MIC2940A: Device: Output Voltage: Junction Temperature Range: Package: Media Type: MIC2941A: 3.3 = 5.0 = 12 = = W = T = U = 1.25A Low Dropout Voltage Regulator, Fixed Output Voltage 1.25A Low Dropout Voltage Regulator, Adjustable Output Voltage + Shutdown 3.3V (MIC2940A only) 5.0V (MIC2940A only) 12V (MIC2940A only) Adjustable (MIC2941A only) Examples: a) MIC2940A-3.3WT: MIC2940A, 3.3V Output Voltage, –40°C to +125°C Temperature Range, 3-Lead TO-220, 50/Tube b) MIC2940A-3.3WU-TR: MIC2940A, 3.3V Output Voltage, –40°C to +125°C Temperature Range, 3-Lead TO-263, 750/Reel c) MIC2940A-5.0WU: MIC2940A, 5.0V Output Voltage, –40°C to +125°C Temperature Range, 3-Lead TO-263, 50/Tube d) MIC2940A-12WT: MIC2940A, 12V Output Voltage, –40°C to +125°C Temperature Range, 3-Lead TO-220, 50/Tube e) MIC2940A-12WU-TR: MIC2940A, 12V Output Voltage, –40°C to +125°C Temperature Range, 3-Lead TO-263, 750/Reel f) MIC2941AWT: MIC2941A, Adjustable Output Voltage, –40°C to +125°C Temperature Range, 3-Lead TO-220, 50/Tube g) MIC2941AWU: MIC2941A, Adjustable Output Voltage, –40°C to +125°C Temperature Range, 5-Lead TO-263, 50/Tube h) MIC2941AWU-TR: MIC2941A, Adjustable Output Voltage, –40°C to +125°C Temperature Range, 5-Lead TO-263, 750/Reel –40°C to +125°C, RoHS-Compliant* 3-Lead TO-220 (MIC2940A) 5-Lead TO-220 (MIC2941A) 3-Lead TO-263 (MIC2940A) 5-Lead TO-263 (MIC2941A) = 50/Tube TR = 750/Reel (TO-263 Package only) * RoHS-compliant with “high-melting solder” exemption. Note 1:  2018 - 2022 Microchip Technology Inc. and its subsidiaries Tape and Reel identifier only appears in the catalog part number description. This identifier is used for ordering purposes and is not printed on the device package. Check with your Microchip Sales Office for package availability with the Tape and Reel option. DS20006000B-page 21 MIC2940A/41A NOTES: DS20006000B-page 22  2018 - 2022 Microchip Technology Inc. and its subsidiaries Note the following details of the code protection feature on Microchip products: • Microchip products meet the specifications contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is secure when used in the intended manner, within operating specifications, and under normal conditions. • Microchip values and aggressively protects its intellectual property rights. Attempts to breach the code protection features of Microchip product is strictly prohibited and may violate the Digital Millennium Copyright Act. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of its code. Code protection does not mean that we are guaranteeing the product is “unbreakable”. Code protection is constantly evolving. Microchip is committed to continuously improving the code protection features of our products. This publication and the information herein may be used only with Microchip products, including to design, test, and integrate Microchip products with your application. Use of this information in any other manner violates these terms. Information regarding device applications is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. 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Trademarks The Microchip name and logo, the Microchip logo, Adaptec, AnyRate, AVR, AVR logo, AVR Freaks, BesTime, BitCloud, CryptoMemory, CryptoRF, dsPIC, flexPWR, HELDO, IGLOO, JukeBlox, KeeLoq, Kleer, LANCheck, LinkMD, maXStylus, maXTouch, MediaLB, megaAVR, Microsemi, Microsemi logo, MOST, MOST logo, MPLAB, OptoLyzer, PIC, picoPower, PICSTART, PIC32 logo, PolarFire, Prochip Designer, QTouch, SAM-BA, SenGenuity, SpyNIC, SST, SST Logo, SuperFlash, Symmetricom, SyncServer, Tachyon, TimeSource, tinyAVR, UNI/O, Vectron, and XMEGA are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. AgileSwitch, APT, ClockWorks, The Embedded Control Solutions Company, EtherSynch, Flashtec, Hyper Speed Control, HyperLight Load, IntelliMOS, Libero, motorBench, mTouch, Powermite 3, Precision Edge, ProASIC, ProASIC Plus, ProASIC Plus logo, QuietWire, SmartFusion, SyncWorld, Temux, TimeCesium, TimeHub, TimePictra, TimeProvider, TrueTime, WinPath, and ZL are registered trademarks of Microchip Technology Incorporated in the U.S.A. Adjacent Key Suppression, AKS, Analog-for-the-Digital Age, Any Capacitor, AnyIn, AnyOut, Augmented Switching, BlueSky, BodyCom, CodeGuard, CryptoAuthentication, CryptoAutomotive, CryptoCompanion, CryptoController, dsPICDEM, dsPICDEM.net, Dynamic Average Matching, DAM, ECAN, Espresso T1S, EtherGREEN, GridTime, IdealBridge, In-Circuit Serial Programming, ICSP, INICnet, Intelligent Paralleling, Inter-Chip Connectivity, JitterBlocker, Knob-on-Display, maxCrypto, maxView, memBrain, Mindi, MiWi, MPASM, MPF, MPLAB Certified logo, MPLIB, MPLINK, MultiTRAK, NetDetach, NVM Express, NVMe, Omniscient Code Generation, PICDEM, PICDEM.net, PICkit, PICtail, PowerSmart, PureSilicon, QMatrix, REAL ICE, Ripple Blocker, RTAX, RTG4, SAM-ICE, Serial Quad I/O, simpleMAP, SimpliPHY, SmartBuffer, SmartHLS, SMART-I.S., storClad, SQI, SuperSwitcher, SuperSwitcher II, Switchtec, SynchroPHY, Total Endurance, TSHARC, USBCheck, VariSense, VectorBlox, VeriPHY, ViewSpan, WiperLock, XpressConnect, and ZENA are trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. SQTP is a service mark of Microchip Technology Incorporated in the U.S.A. The Adaptec logo, Frequency on Demand, Silicon Storage Technology, Symmcom, and Trusted Time are registered trademarks of Microchip Technology Inc. in other countries. GestIC is a registered trademark of Microchip Technology Germany II GmbH & Co. KG, a subsidiary of Microchip Technology Inc., in other countries. All other trademarks mentioned herein are property of their respective companies. © 2018 - 2022, Microchip Technology Incorporated and its subsidiaries. All Rights Reserved. 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