MIC61300 Low Input Voltage, Single-Supply High-Current LDO General Description Features The Micrel MIC61300 is a 3A output, low input voltage, single-supply regulator. This regulator operates over a single input voltage range of 1.1V to 3.6V and offers an ultra-low dropout less than 350mV over the entire operating temperature range. The MIC61300 is designed to drive digital circuits requiring low voltages at high currents such as DSPs, FPGAs, microcontrollers, etc. The regulator is available as a 1.0V fixed-output voltage option or as an adjustable-output voltage option. The MIC61300 is stable with a 47µF, low-ESR ceramic output capacitor, and includes protection features such as thermal shutdown, current limiting and logic enable. The MIC61300 is offered in two different packages: a lowprofile, leadless 10-pin 3mm x 3mm MLF® and a 10-pin ePad MSOP. The MIC61300 has an operating 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. • Single VIN rail: 1.1V to 3.6V • Output voltage accuracy: ±2.5% over temperature • Typical dropout of 150mV at room temperature – Maximum dropout of 350mV at full load over temperature • Output voltage adjustable down to 0.5V • Soft-start control via external capacitor • Excellent line and load regulation • Logic controlled shutdown • Thermal-shutdown and current-limit protection • 10-pin 3mm × 3mm MLF® package • 10-pin ePad MSOP package • Junction temperature range from −40°C to +125°C Applications • Point-of-load applications • ASIC / Microprocessor power supply • FPGA power supply • Telecom / Networking cards • Wireless infrastructure ____________________________________________________________________________________________________________ Typical Application Dropout Voltage vs. Output Current DROPOUT VOLTAGE (mV) 200 V IN = 1.5V V FB = 0V 150 TA = 25ºC 100 50 0 0.0 1.0 2.0 3.0 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 September 2010 M9999-092910-A Micrel, Inc. MIC61300 Ordering Information Part Number Top Mark Voltage Temperature Range Package Lead Finish MIC61300YMME 61300 Adjustable –40°C to +125°C ePad MSOP-10L Pb Free MIC61300-10YMME Z10J 1.0V –40°C to +125°C ePad MSOP-10L Pb Free MIC61300YML ZJ30 Adjustable –40°C to +125°C 3mmx3mm MLF®-10L Pb Free MIC61300-10YML 10ZJ 1.0V –40°C to +125°C ® 3mmx3mm MLF -10L Pb Free Pin Configuration 10-Pin 3mm x 3mm MLF® (ML) 10-Pin ePad MSOP (MME) Pin Description Pin Number Pin Name Pin Function 1, 2 IN Input Voltage. 3 GND Ground: Input and output return pin. 4 EN Enable: Active-high control input that allows turn-on/-off of the LDO. 5, 6 NC No external function. Tie to ground. 7 CP Internal Charge Pump Circuit Output: Connect a 0.1µF to 1µF capacitor from CP pin-to-GND to control the ramp rate of the output. FB Adjustable Regulator Feedback Input: Connect to the resistor voltage divider network that is placed from OUT pin to GND pin in order to set the output voltage. 8 SENSE Fixed-Output Voltage Sense Input: Apply a Kelvin connection from this pin of the fixed output at the point-of-load to sense the output voltage level. 9, 10 OUT Regulator Output: The output voltage is set by the resistor divider connected from VOUT to GND (with the divided connection tied to FB). A 47µF ceramic capacitor with low ESR is required to maintain stability. See Applications Information. EP GND Connect to GND. September 2010 2 M9999-092910-A Micrel, Inc. MIC61300 Absolute Maximum Ratings(1, 2) Operating Ratings(3) VIN to GND...................................................... −0.3V to 4.5V VCP to GND..................................................... −0.3V to 5.5V VOUT to GND ...................................................... −0.3V to VIN VSENSE to GND ................................................... −0.3V to VIN VEN to GND..................................................... −0.3V to 4.5V VFB to GND ........................................................ −0.3V to VIN Junction Temperature (TJ) ......................................... 150°C Lead Temperature (soldering, 10 sec.)...................... 260°C Storage Temperature (TS).........................−65°C to +150°C Supply Voltage (VIN)......................................... 1.1V to 3.6V Enable Voltage (VEN)...................................... −0.3V to 3.6V Output Voltage Range (VOUT)........................... 0.5V to 3.0V Ambient Temperature Range (TA) .............. –40°C to +85°C Junction Temperature (TJ) ........................ –40°C to +125°C Maximum Power Dissipation (PD) ............................. Note 4 Package Thermal Resistance 3mm × 3mm MLF-10L (θJA) ............................60.7°C/W ePad MSOP-10 (θJA) ......................................76.7°C/W Electrical Characteristics(5) VIN = VOUT + 0.4V; VEN = 1.1V; IOUT = 10mA; CCP = 0.1µF; COUT = 47µF; TJ = 25°C. Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted. Parameter Condition Min. Typ. Max. Units 3.6 V Power Supply Input 1.1 Input Voltage Range (VIN) Ground Pin Current Ground Current in Shutdown IOUT = 3A; VIN = 1.4V 1.8 IOUT = 3A; VIN = 3.6V 7.6 15 VEN = 0V; VIN = 2V; VOUT = 0V 0.1 10 0.495 0.500 0.505 0.4875 0.500 0.5125 −1 0 +1 −2.5 0 +2.5 mA µA Reference Feedback Pin Voltage (FB Pin) Adjustable Output Output Voltage Accuracy (SENSE Pin) Fixed Output Load Regulation IOUT = 10mA to 3A −0.35 Line Regulation VIN = (VOUT + 0.4V) to 3.6V −0.2 FB Pin Current VFB = 0.5V (6) V % 0.35 % 0.12 0.2 %/V 0.01 1 µA Current Limit Current Limit 3.5 VOUT = 0V 4.7 A Dropout Voltage Dropout Voltage (VIN − VOUT) IOUT = 3A 150 350 mV Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. Devices are ESD sensitive. Handling precautions recommended. Human body model (HBM), 1.5k in series with 100pF. 3. The device is not guaranteed to function outside its operating rating. 4. PD(MAX) = (TJ(MAX) – TA) / θJA, where θJA, depends upon the printed circuit layout. See “Applications Information.” 5. Specification for packaged product only. 6. ∆VOUT (%) = (0.12) × ∆VIN September 2010 3 M9999-092910-A Micrel, Inc. MIC61300 Electrical Characteristics(5) (Continued) VIN = VOUT + 0.4V; VEN = 1.1V; IOUT = 10mA; CCP = 0.1µF; COUT = 47µF; TJ = 25°C. Bold values indicate –40°C ≤ TJ ≤ +125°C, unless noted. Parameter Condition Min. Typ. 1.1 0.6 Max. Units Enable Input EN Logic Level High EN Logic Level Low 0.5 EN Hysteresis 100 EN Pin Current Start-Up Time VEN = 0.2V (Regulator Shutdown) V 0.2 mV 0.02 VEN = 3.6V (Regulator Enabled) 15 CCP = 0.1µF; COUT = 10µF VIN = 1.2V, VOUT = 0.5V 250 V µA 750 µs Minimum Load Current 10 Minimum Load Current mA Thermal Protection Over-Temperature Shutdown TJ Rising Over-Temperature Shutdown Hysteresis September 2010 4 160 °C 5 °C M9999-092910-A Micrel, Inc. MIC61300 Typical Characteristics 20 ADJUSTABLE OPTION VFB = 0V 250 200 IOUT = 3A 150 IOUT = 1.5A 100 50 1.0 VIN = VOUT + 0.4V 16 IOUT = 3A 12 8 4 VOUT = 0V 0.8 VEN = 0V 0.6 0.4 0.2 IOUT = 100mA 0 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 0.0 1.0 1.5 INPUT VOLTAGE (V) 2.5 3.0 3.5 4.0 1.0 0.500 0.495 25 IOUT = 0A VFB = 0.5V 20 15 10 5 0 1.0 1.5 2.0 2.5 3.0 3.5 1.5 INPUT VOLTAGE (V) Short-Circuit Current vs. Input Voltage 20 10 ENABLE PIN CURRENT (µA) VOUT = 0V 8 6 4 2 0 1.5 2.0 2.5 3.0 INPUT VOLTAGE (V) September 2010 3.5 4.0 0.05 0.00 VOUT = 1.0V IOUT = 10mA to 3A -0.05 -0.10 1.0 4.0 2.0 2.5 3.0 3.5 4.0 1.0 1.5 2.0 2.5 3.0 3.5 INPUT VOLTAGE (V) INPUT VOLTAGE (V) Enable Pin Current vs. Input Voltage Charge Pump Voltage vs. Input Voltage 10 CHARGE PUMP VOLTAGE (V) 0.490 4.0 0.10 LOAD REGULATION (%) FB PIN CURRENT (nA) VOUT = 1.0V IOUT = 10mA 3.0 Load Regulation vs. Input Voltage 30 0.505 2.0 INPUT VOLTAGE (V) Feedback Pin Current vs. Input Voltage 0.510 1.0 2.0 INPUT VOLTAGE (V) Feedback Voltage vs. Input Voltage FEEDBACK VOLTAGE (V) GROUND CURRENT (µA) GROUND CURRENT (mA) DROPOUT VOLTAGE (mV) 300 CURRENT LIMIT (A) Shutdown Ground Current vs. Input Voltage GND Pin Current vs. Input Voltage Dropout Voltage vs. Input Voltage 15 10 VOUT = 1.0V IOUT = 10mA 5 VEN = 3.6V 4.0 8 6 4 VOUT = 0.5V 2 IOUT = 50mA 0 0 1.0 1.5 2.0 2.5 3.0 INPUT VOLTAGE (V) 5 3.5 4.0 0 1 2 3 INPUT VOLTAGE (V) M9999-092910-A 4 Micrel, Inc. MIC61300 Typical Characteristics (Continued) Shutdown Ground Current vs. Temperature GND Pin Current vs. Temperature 5 GROUND CURRENT (µA) VOUT = 1.0V 4 IOUT = 500mA 3 2 1 0 4 VOUT = 0V 3 2 1 -20 10 40 70 100 130 -50 -20 10 40 70 TEMPERATURE (°C) TEMPERATURE (°C) EN Pin Current vs. Temperature Dropout Voltage vs. Temperature 30 100 DROPOUT VOLTAGE (mV) 20 15 VIN = 1.5V 10 VOUT = 1.0V VEN = 3.6V 5 -50 10 40 70 100 IOUT = 3A 100 IOUT = 1A -20 10 40 70 100 130 40 70 TEMPERATURE (°C) September 2010 100 130 10 40 70 100 130 Line Regulation vs. Temperature 0.20 15 10 VIN = 1.5V VFB = 0.5V 5 IOUT = 10mA VIN = 1.1V to 3.6V VOUT = 1.0V 0.15 IOUT = 10mA 0.10 0.05 0.00 0 10 -20 TEMPERATURE (°C) LINE REGULATION (%/V) FB PIN CURRENT (nA) 0.490 -20 4 -50 20 0.495 -50 6 2 VIN = 1.5V 0.500 130 VOUT = 0V Feedback Pin Current vs. Temperature IOUT = 10mA 100 VIN = 1.5V 8 TEMPERATURE (°C) VOUT = 1.0V 70 0 -50 0.510 40 Short Circuit Current vs. Temperature VFB = 0V 200 130 Feedback Voltage vs. Temperature 10 VIN = 1.5V TEMPERATURE (°C) 0.505 -20 TEMPERATURE (°C) 0 -20 0.75 10 300 0 -50 1.00 130 400 25 1.25 0.50 0 -50 EN PIN CURRENT (µA) 1.50 VIN =1.5V CURRENT LIMIT (A) GROUND CURRENT (mA) VIN = 1.4V VIN THRESHOLD (V) 5 FEEDBACK VOLTAGE (V) VIN Turn-On Threshold vs. Temperature -50 -20 10 40 70 TEMPERATURE (°C) 6 100 130 -50 -20 10 40 70 100 130 TEMPERATURE (°C) M9999-092910-A Micrel, Inc. MIC61300 Typical Characteristics (Continued) TA =125ºC VFB = 0V 200 TA = 85ºC 150 100 TA = 25ºC 50 TA = -40ºC 0.0 1.0 2.0 VIN = 1.5V GROUND CURRENT (mA) 250 0 VOUT = 1.0V 0.505 0.500 0.495 0.490 VIN = 1.5V 4 VOUT = 1.0V 3 2 1 0 0.0 3.0 1.0 2.0 3.0 0.0 Line Regulation vs. Output Current Power Dissipation vs. Output Current Case Temperature* (ML) vs. Output Current 100 0.00 -0.05 CASE TEMPERATURE (°C) POWER DISSIPATION (W) VIN = 1.5V to 3.6V VOUT = 1.2V 1.5 1.0 VOUT = 1.5V 0.5 VOUT = 1.0V 80 60 40 1.0 2.0 1.0 Output Noise vs. Frequency RIPPLE REJECTION (dB) 1 VIN =1.2V VOUT = 1.0V IOUT = 3A COUT = 47µF 1 10 FREQUENCY (kHz) 100 3.0 0.0 1.0 1000 60 50 40 VIN =1.5V 30 VOUT = 1.0V 20 IOUT = 100mA 10 0 0.01 COUT = 47µF 0.1 1 10 FREQUENCY (kHz) 100 3.0 Ripple Rejection vs. Frequency 80 Gain (dB) 70 2.0 OUTPUT CURRENT (A) Ripple Rejection vs. Frequency 80 Noise Spectral Density 0.1 2.0 OUTPUT CURRENT (A) OUTPUT CURRENT (A) 10 VOUT = 1.0V 0 0.0 3.0 RIPPLE REJECTION (dB) 0.0 VIN = 1.5V 20 0.0 -0.10 0.001 0.01 3.0 OUTPUT CURRENT (A) 0.05 0.01 2.0 OUTPUT CURRENT (A) 2.0 0.1 1.0 OUTPUT CURRENT (A) 0.10 LINE REGULATION (%/V) 5 0.510 VIN = 1.5V FEEDBACK VOLTAGE (V) DROPOUT VOLTAGE (mV) 300 OUTPUT NOISE (µV/√Hz) GND Pin Current vs. Output Current Feedback Voltage vs. Output Current Dropout Voltage vs. Output Current 1000 Gain (dB) 70 60 50 40 VIN =1.5V 30 VOUT = 1.0V 20 IOUT = 1A 10 COUT = 47µF 0 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) Case Temperature*: The temperature measurement was taken at the hottest point on the MIC61300 case mounted on a 2.25 square inch PCB at an ambient temperature of 25°C; see “Thermal Measurement” section. Actual results will depend upon the size of the PCB, ambient temperature and proximity to other heat emitting components. September 2010 7 M9999-092910-A Micrel, Inc. MIC61300 Functional Characteristics September 2010 8 M9999-092910-A Micrel, Inc. MIC61300 Functional Characteristics (Continued) September 2010 9 M9999-092910-A Micrel, Inc. MIC61300 Functional Characteristics (Continued) September 2010 10 M9999-092910-A Micrel, Inc. MIC61300 Functional Diagram Figure 1. MIC61300 Block Diagram – Fixed Figure 2. MIC61300 Block Diagram – Adjustable September 2010 11 M9999-092910-A Micrel, Inc. MIC61300 Input Capacitor A 10µF ceramic input capacitor is all that is required for most applications. However, fast load transient and low headroom (VIN – VOUT) requires additional bulk bypass capacitance to ensure that the regulator does not drop out of regulation. The input capacitor must be placed on the same side of the board and next to the MIC61300 to minimize the dropout voltage and voltage ringing during transient and short circuit conditions. It is also recommended to use two vias for each end of the capacitor to connect to the power and ground plane. X7R or X5R dielectric ceramic capacitors are recommended because of their temperature performance. X7R-type capacitors change capacitance by 15% over their operating temperature range and are the most stable type of ceramic capacitors. Z5U and Y5V dielectric capacitors change value by as much as 50% and 60% respectively over their operating temperature ranges. To use a ceramic chip capacitor with Y5V dielectric, the value must be much higher than an X7R ceramic or a tantalum capacitor to ensure the same capacitance value over the operating temperature range. Tantalum capacitors have a very stable dielectric (10% over their operating temperature range) and can also be used in parallel with the ceramic capacitor(s). See Typical Characteristics section for examples of load transient response. Functional Description The MIC61300 is an ultra-high-performance, low-dropout linear regulator designed for high-current applications that require low input voltage operation. The MIC61300 operates from a single input supply and generates an internal supply that is higher than the input voltage to drive an on-chip N-Channel MOSFET. The N-Channel MOSFET significantly reduces the dropout voltage when compared to a traditional P-Channel MOSFET. P-Channel MOSFETs are usually used in single-supply low-dropout linear voltage regulators. However, for input voltages below 1.5V, there is not sufficient gate drive to turn on the P-Channel. To solve this issue, the MIC61300 uses a simple internal charge pump to drive the internal N-Channel MOSFET’s gate higher than the input voltage, see Functional Diagram. The N-Channel MOSFET greatly reduces the dropout voltage for the same die area when compared to that of a P-Channel. Other added benefits of the charge pump include the ability to control the output voltage rise time and to improve the power supply rejection ratio (PSRR). This is accomplished by using the VCP supply to power the error amplifier. The other significant advantage of the MIC61300 over a P-Channel regulator is its transient response. The NChannel in the follower configuration is much faster than its P-channel counter part and is simpler to compensate. Any type of output capacitor can be placed in parallel with it as long as the minimum value output ceramic capacitor is placed next to the MIC61300. See the Output Capacitor section for specific details. Also, the regulator is fully protected from damage due to fault conditions by offering linear current limiting and thermal shutdown. Output Capacitor As part of the frequency compensation, the MIC61300 requires a 47µF ceramic output capacitor. However, any other type of capacitor can be placed in parallel as long as the 47µF ceramic output capacitor is placed next to the MIC61300. Output voltages below 0.8V require either a 100µF or 2x 47µF output capacitance for large output transients. The increased output capacitance reduces the output voltage drop caused by load transients, which increases as a percentage of the output voltage as the output voltage is lowered. The output capacitor type and placement criteria are the same as the input capacitor. See the Input Capacitor section for a detailed description. Soft-Start Soft-start reduces the power supply input surge current at startup by controlling the output voltage rise time. The input surge appears while the output capacitor is charged up. A slower output rise time will draw a lower input surge current. The CP pin is the output of the internal charge pump. The soft-start rise time is controlled by the external capacitor connected from CP pin-to-GND. During softstart, the charge pump feeds a current to CCP. The output voltage rise time is dependent upon the value of CCP, the input voltage, output voltage and the current limit. The value of the charge pump external capacitor selected is recommended in the range of 0.1µF to 1µF. September 2010 Minimum Load Current The MIC61300 requires a minimum load of 10mA to maintain output voltage regulation. 12 M9999-092910-A Micrel, Inc. MIC61300 Adjustable Regulator Design The MIC61300 adjustable version allows programming the output voltage from 0.5V to 3.0V by placing a resistor divider network (R1, R2) from VOUT to GND (see Application Circuit). The high side of R1 should be connected at the point-of-load for high-accuracy Kelvin sensing. VOUT is determined by the following equation: ⎛ R1 ⎞ VOUT = 0.5 × ⎜ + 1⎟ ⎝ R2 ⎠ Thermal Design Linear regulators are simple to use. The most complicated design parameters to consider are thermal characteristics. To help reduce the thermal resistance, the ePad (underneath the IC) should be soldered to the PCB ground and the placement of thermal vias either underneath or near the ePad is highly recommended. Thermal design requires the following applicationspecific parameters: • Maximum ambient temperature (TA) • Output current (IOUT) • Output voltage (VOUT) • Input voltage (VIN) • Ground current (IGND) First, calculate the power dissipation of the regulator from these numbers and the device parameters from this datasheet: Eq. 1 where VOUT is the desired output voltage. The resistor (R2) value between the FB pin and GND is selected to maintain a minimum 10mA load on the output. The resistor values are calculated from the previous equation, resulting in the following: PD = (VIN - VOUT) × IOUT + (VIN × IGND) ⎛V ⎞ R1 = R2 × ⎜⎜ OUT − 1⎟⎟ ⎝ 0.5 ⎠ Eq. 2 where the ground current is approximated by using numbers from the Electrical Characteristics or Typical Characteristics sections For example, given an expected maximum ambient temperature (TA) of 75°C with VIN = 1.2V, VOUT = 0.9V, and IOUT = 1.5A, first calculate the expected PD using Equation 1: Table 1 is a list of resistor combinations to set the output voltage. A 1% tolerance is recommended for both R1 and R2. For a unity gain, 0.5V output voltage, connect the FB pin directly to the output. VOUT R1 R2 0.5V − 49.9Ω 0.6V 10.0Ω 49.9Ω 0.7V 20.0Ω 49.9Ω 0.8V 30.1Ω 49.9Ω 0.9V 40.2Ω 49.9Ω 1.0 49.9Ω 49.9Ω 1.1V 60.4Ω 49.9Ω 1.2V 69.8Ω 49.9Ω 1.5V 100Ω 49.9Ω 1.8V 130Ω 49.9Ω 2.2V 169Ω 49.9Ω Eq. 3 PD = (1.2V – 0.9V) × 1.5A + 1.2V × 0.015A = 0.468W Eq. 4 Next, determnine the junction temperature for the expected power dissipation above using the thermal resistance (θJA) of the 10-pin 3mm × 3mm MLF® (YML) adhering to the following criteria for the PCB design: 1oz. copper and 100mm2 copper area for the MIC61300. TJ = (θJA × PD) + TA = (60.7°C/W × 0.468W) + 75°C = 103.4°C Eq. 5 Table 1. Resistor Selection for Specific VOUT September 2010 13 M9999-092910-A Micrel, Inc. MIC61300 To determine the maximum power dissipation allowed that would not exceed the IC’s maximum junction temperature (125°C) when operating at a maximum ambient temperature of 75°C by: To avoid this messy thermal couple grease or glue, an infrared thermometer is recommended. Most infrared thermometers’ spot size are too large for an accurate reading on small form factor ICs. However, an IR thermometer from Optris has a 1mm spot size, which ® makes it ideal for the 3mm × 3mm MLF package. Also, get the optional stand. The stand makes it easy to hold the beam on the IC for long periods of time. PD(MAX) = (TJ(MAX) – TA) / θJA = (125°C − 75°C) / (60.7°C/W) = 0.824W Eq. 6 Enable The MIC61300 features an active high enable input (EN) that allows ON/OFF control of the regulator. The current through the device reduces to near “zero” when the device is shutdown, with only microamperes of leakage current. The EN input may be directly tied to VIN or driven by a voltage that is higher than VIN as long as the voltage does not exceed the maximum operating rating of the EN pin. Thermal Measurements It is always wise to measure the IC’s case temperature to make sure that it is within its operating limits. Although this might seem like a very elementary task, it is very easy to get erroneous results. The most common mistake is to use the standard thermal couple that comes with the thermal voltage meter. This thermal couple wire gauge is large, typically 22 gauge, and behaves like a heatsink, resulting in a lower case measurement. There are two suggested methods for measuring the IC case temperature: a thermal couple or an infrared thermometer. If a thermal couple is used, it must be constructed of 36 gauge wire or higher to minimize the wire heatsinking effect. In addition, the thermal couple tip must be covered in either thermal grease or thermal glue to make sure that the thermal couple junction is making good contact to the case of the IC. This thermal couple from Omega (5SC-TT-K-36-36) is adequate for most applications. September 2010 14 M9999-092910-A Micrel, Inc. MIC61300 MIC61300YML Evaluation Board Schematic (3mm × 3mm 10-Pin ePad MLF®) Bill of Materials Item C1 Part Number C0805C106K8PACTU C3216X5ROJ476M C2 GRM31Cr60J476ME19L 12066D476MAT2A C3 R1 R2 C0603C104K8RACTU CRCW080569R8F CRCW080549R9F Manufacturer Kemet (1) Description 10µF/10V Ceramic Capacitor, X5R,Size 0805 TDK(2) 47µF/6.3V Ceramic Capacitor, X5R, Size 1206 or Murata(3) 47µF/6.3V Ceramic Capacitor, X5R, Size 1206 or (4) AVX Kemet(1) Qty. 1 1 47µF/6.3V Ceramic Capacitor, X5R, Size 1206 0.1µF/10V Ceramic Capacitor, X7R, Size 0603 1 (5) 69.8Ω Film Resistor, Size 0805, 1% 1 (5) 49.9Ω Film Resistor, Size 0805, 1% 1 (5) Vishay Vishay R3 CRCW08051002F Vishay 10kΩ Film Resistor, Size 0805, 1% 1 R4 CRCW080500R0F Vishay(5) 0Ω Film Resistor, Size 0805, 1% 1 U1 MIC61300YML 3A Low-Voltage, Single-Supply LDO 1 Micrel, Inc.(6) Notes: 1. Kemet: www.kemet.com. 2. TDK: www.tdk.com. 3. Murata: www.murata.com. 4. AVX: www.avx.com. 5. Vishay: www.vishay.com. 6. Micrel, Inc.: www.micrel.com. September 2010 15 M9999-092910-A Micrel, Inc. MIC61300 MIC61300YML PCB Layout Recommendations MIC61300YML Evaluation Board – Top Layer MIC61300YML Evaluation Board – Bottom Layer September 2010 16 M9999-092910-A Micrel, Inc. MIC61300 MIC61300YMME Evaluation Board Schematic (10-Pin ePad MSOP) Item Part Number C1 C0805C106K8PACTU C3216X5ROJ476M C2 GRM31Cr60J476ME19L 12066D476MAT2A C3 R1 C0603C104K8RACTU CRCW080569R8F Manufacturer Kemet(1) Description 10µF/10V Ceramic Capacitor, X5R,Size 0805 (2) TDK Qty. 1 47µF/6.3V Ceramic Capacitor, X5R, Size 1206 or (3) Murata 47µF/6.3V Ceramic Capacitor, X5R, Size 1206 or AVX(4) 47µF/6.3V Ceramic Capacitor, X5R, Size 1206 Kemet(1) 1 0.1µF/10V Ceramic Capacitor, X7R, Size 0603 1 (5) 69.8Ω Film Resistor, Size 0805, 1% 1 (5) Vishay R2 CRCW080549R9F Vishay 49.9Ω Film Resistor, Size 0805, 1% 1 R3 CRCW08051002F Vishay(5) 10kΩ Film Resistor, Size 0805, 1% 1 CRCW080500R0F (5) 0Ω Film Resistor, Size 0805, 1% 1 3A Low-Voltage, Single-Supply LDO 1 R4 U1 MIC61300YMME Vishay Micrel, Inc. (6) Notes: 1. Kemet: www.kemet.com. 2. TDK: www.tdk.com. 3. Murata: www.murata.com. 4. AVX: www.avx.com. 5. Vishay: www.vishay.com. 6. Micrel, Inc.: www.micrel.com. September 2010 17 M9999-092910-A Micrel, Inc. MIC61300 MIC61300YMME PCB Layout Recommendations MIC61300YMME Evaluation Board – Top Layer MIC61300YMME Evaluation Board – Bottom Layer September 2010 18 M9999-092910-A Micrel, Inc. MIC61300 Package Information 10-Pin 3mm x 3mm MLF® (ML) September 2010 19 M9999-092910-A Micrel, Inc. MIC61300 Package Information (Continued) 10-Pin e-PAD MSOP (MME) September 2010 20 M9999-092910-A Micrel, Inc. MIC61300 Landing Pattern 10-Pin 3mm x 3mm MLF® (ML) September 2010 21 M9999-092910-A Micrel, Inc. MIC61300 Landing Pattern (Continued) 10-Pin e-PAD MSOP (ME) MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA TEL +1 (408) 944-0800 FAX +1 (408) 474-1000 WEB http://www.micrel.com Micrel makes no representations or warranties with respect to the accuracy or completeness of the information furnished in this data sheet. This information is not intended as a warranty and Micrel does not assume responsibility for its use. Micrel reserves the right to change circuitry, specifications and descriptions at any time without notice. No license, whether express, implied, arising by estoppel or otherwise, to any intellectual property rights is granted by this document. Except as provided in Micrel’s terms and conditions of sale for such products, Micrel assumes no liability whatsoever, and Micrel disclaims any express or implied warranty relating to the sale and/or use of Micrel products including liability or warranties relating to fitness for a particular purpose, merchantability, or infringement of any patent, copyright or other intellectual property right Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s use or sale of Micrel Products for use in life support appliances, devices or systems is a Purchaser’s own risk and Purchaser agrees to fully indemnify Micrel for any damages resulting from such use or sale. © 2010 Micrel, Incorporated. September 2010 22 M9999-092910-A