MIC61150 Low Input Voltage, Single-Supply High-Current LDO General Description Features The Micrel MIC61150 is a 1.5A 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 200mV over the entire operating temperature range. The MIC61150 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 MIC61150 is stable with a 22µF, low-ESR ceramic output capacitor, and includes protection features such as thermal shutdown, current limiting and logic enable. The MIC61150 is offered in two different packages: a lowprofile, leadless 10-pin 3mm x 3mm MLF® and a 10-pin ePad MSOP. The MIC61150 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 75mV at room temperature – Maximum dropout of 200mV at full load over temperature • COUT as low as 22µF (ceramic capacitor) • 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) 100 80 VIN = 1.5V VFB = 0V 60 TA = 25ºC 40 20 0 0.0 0.5 1.0 1.5 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 November 2010 M9999-112210-A Micrel, Inc. MIC61150 Ordering Information Part Number Top Mark Voltage Temperature Range Package Lead Finish MIC61150YMME 61150 Adjustable –40°C to +125°C ePad MSOP-10L Pb Free MIC61150-10YMME Z10F 1.0V –40°C to +125°C ePad MSOP-10L Pb Free MIC61150YML ZF15 Adjustable –40°C to +125°C MIC61150-10YML 10ZF 1.0V –40°C to +125°C ®- Pb Free ®- Pb Free 3mm × 3mm MLF 10L 3mm × 3mm MLF 10L 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 4 EN 5, 6 NC No external function. Tie to ground. 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. See Typical Applications Circuit. 7 8 SENSE Ground: Input and output return pin. Connect GND near the point-of-load. Enable: Active-high control input that allows turn-on/-off of the LDO. Fixed-Output Voltage Sense Input: Connect the SENSE pin of the fixed output option at the pointof-load to accurately monitor 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 22µF ceramic capacitor with low ESR is required to maintain stability. See Applications Information. EP GND Connect to GND. November 2010 2 M9999-112210-A Micrel, Inc. MIC61150 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 + 0.2V; VEN = 1.1V; IOUT = 10mA; CCP = 0.1µF; COUT = 22µF; 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 = 1.5A; VIN = 1.2V 1.8 IOUT = 1.5A; 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 mA µA Reference Feedback Pin Voltage (FB Pin) Adjustable Output V −1 +1 −2.5 +2.5 IOUT = 10mA to 1.5A −0.3 0.3 % Line Regulation VIN = (VOUT + 0.2V) to 3.6V −0.2 0.08 0.2 %/V FB Pin Current VFB = 0.5V 0.01 1 µA Output Voltage Accuracy (SENSE Pin) Fixed Output Load Regulation (6) % Current Limit Current Limit 1.7 VOUT = 0V 3.5 A Dropout Voltage Dropout Voltage (VIN − VOUT) IOUT = 1.5A 75 200 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 (%) = 0.08 × ∆VIN November 2010 3 M9999-112210-A Micrel, Inc. MIC61150 Electrical Characteristics(5) (Continued) VIN = VOUT + 0.2V; VEN = 1.1V; IOUT = 10mA; CCP = 0.1µF; COUT = 22µF; 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 Enable) 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 November 2010 4 160 °C 5 °C M9999-112210-A Micrel, Inc. MIC61150 Typical Characteristics Dropout Voltage vs. Input Voltage 20 100 IOUT = 1.5A 80 60 IOUT = 750mA 40 20 IOUT = 100mA 0 1.0 VIN = VOUT + 0.2V 16 IOUT = 1.5A 12 8 4 0 1.0 1.5 2.0 2.5 3.0 3.5 4.0 1.5 2.0 2.5 3.0 3.5 4.0 0.500 0.495 0.490 25 VFB = 0.5V 20 15 10 0 3 4 4 1.5 2.0 2.5 3.0 3.5 4.0 2 1 0 1.5 2.0 2.5 3.0 INPUT VOLTAGE (V) November 2010 3.5 VOUT = 1.0V -0.1 IOUT = 10mA to 1.5A 4.0 15 VOUT = 1.0V IOUT = 10mA VEN = 3.6V 5 2.0 2.5 3.0 3.5 4.0 Charge Pump Voltage vs. Input Voltage 10.0 10 1.5 INPUT VOLTAGE (V) CHARGE PUMP VOLTAGE (V) ENABLE PIN CURRENT (µA) 3 4.0 0.0 1.0 20 4 3.5 0.1 Enable Pin Current vs. Input Voltage Short-Circuit Current vs. Input Voltage VOUT = 0V 3.0 Load Regulation vs. Input Voltage INPUT VOLTAGE (V) 5 2.5 -0.2 1.0 INPUT VOLTAGE (V) 1.0 2.0 0.2 IOUT = 0A 5 3 1.5 INPUT VOLTAGE (V) LOAD REGULATION (%) FB PIN CURRENT (nA) VOUT = 1.0V IOUT = 10mA 2 0.2 1.0 30 2 0.4 Feedback Pin Current vs. Input Voltage 0.510 1 VEN = 0V 0.6 INPUT VOLTAGE (V) Feedback Voltage vs. Input Voltage 0.505 VOUT = 0V 0.8 0.0 1.0 INPUT VOLTAGE (V) FEEDBACK VOLTAGE (V) GROUND CURRENT (µA) ADJUSTABLE OPTION VFB = 0V GROUND CURRENT (mA) DROPOUT VOLTAGE (mV) 120 CURRENT LIMIT (A) Shutdown Ground Current vs. Input Voltage GND Pin Current vs. Input Voltage 0 8.0 6.0 4.0 VOUT = 0.5V 2.0 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 4 INPUT VOLTAGE (V) M9999-112210-A Micrel, Inc. MIC61150 Typical Characteristics (Continued) GND Pin Current vs. Temperature Shutdown Ground Current vs. Temperature 5 VIN = 1.2V 4 VOUT = 1.0V IOUT = 500mA 3 2 1 VIN =1.5V 4 VOUT = 0V 3 2 1 0 0 -50 -20 10 40 70 100 -20 10 70 TEMPERATURE (°C) EN Pin Current vs. Temperature Dropout Voltage vs. Temperature 100 10 VIN = 1.5V VOUT = 1.0V 5 VEN = 3.6V 10 40 70 100 160 VFB = 0V 120 IOUT = 1.5A 80 IOUT = 100mA 40 FB PIN CURRENT (nA) 0.500 0.495 10 40 70 100 130 10 40 70 TEMPERATURE (°C) November 2010 VOUT = 0V -50 -20 10 100 130 40 70 100 130 TEMPERATURE (°C) Line Regulation vs. Temperature 0.20 VIN = 1.5V 20 VFB = 0.5V 15 10 5 0 0.490 -20 VIN = 1.5V 2 1 25 VIN = 1.5V -50 3 Feedback Pin Current vs. Temperature VOUT = 1.0V 130 4 TEMPERATURE (°C) IOUT = 10mA 100 0 -20 TEMPERATURE (°C) 0.505 70 5 -50 0.510 40 VIN = 1.5V 130 Feedback Pin Voltage vs. Temperature 10 Short-Circuit Current vs. Temperature LINE REGULATION (%/V) -20 -20 TEMPERATURE (°C) 0 -50 0.75 -50 CURRENT LIMIT (A) DROPOUT VOLTAGE (mV) 15 1.00 130 200 0 FEEDBACK VOLTAGE (V) 40 TEMPERATURE (°C) 20 1.25 0.50 -50 130 25 EN PIN CURRENT (µA) 1.50 VIN THRESHOLD (V) GROUND CURRENT (µA) GROUND CURRENT (mA) 5 VIN Turn-On Threshold vs. Temperature 0.10 0.00 VIN = 1.2 to 3.6V -0.10 VOUT = 1.0V IOUT = 10mA -0.20 -50 -20 10 40 70 TEMPERATURE (°C) 6 100 130 -50 -20 10 40 70 100 130 TEMPERATURE (°C) M9999-112210-A Micrel, Inc. MIC61150 Typical Characteristics (Continued) 0.510 VFB = 0V 150 TA =125ºC TA = 85ºC 100 TA = -40ºC 50 TA = 25ºC 0 0.505 0.500 VIN = 1.5V 0.495 VOUT = 1.0V 0.490 0.0 0.5 1.0 1.5 2.0 1.0 0.5 1.0 1.5 0.0 0.5 1.0 1.5 OUTPUT CURRENT (A) Line Regulation vs. Output Current Power Dissipation vs. Output Current Case Temperature* (ML) vs. Output Current 1.00 VOUT = 1.0V -0.2 0.5 1.0 0.75 0.50 VOUT = 1.5V 0.25 VOUT = 1.0V 0.00 1.5 0.5 Output Noise RIPPLE REJECTION (dB) 1 VIN =1.2V VOUT = 1.0V IOUT = 1.5A COUT = 22µF 10 FREQUENCY (kHz) 60 40 20 1.0 1.5 0.0 0.5 100 1000 80 70 70 60 50 30 VIN =1.2V VOUT = 1.0V 20 IOUT = 500mA 10 C OUT = 22µF 0 0.01 0.1 1 10 FREQUENCY (kHz) 1.5 Ripple Rejection 80 40 1.0 OUTPUT CURRENT (A) Ripple Rejection 10 1 VOUT = 1.0V OUTPUT CURRENT (A) OUTPUT CURRENT (A) 0.1 VIN = 1.5V 80 0 0.0 RIPPLE REJECTION (dB) 0.0 100 CASE TEMPERATURE (°C) VIN = 1.2V to 3.6V -0.1 0.001 0.01 3.0 OUTPUT CURRENT (A) 0.0 0.01 VOUT = 1.0V OUTPUT CURRENT (A) 0.1 0.1 VIN = 1.5V 4.0 0.0 0.0 POWER DISSIPATION (W) 0.2 LINE REGULATION (%/V) 5.0 GROUND CURRENT (mA) VIN = 1.5V FEEDBACK VOLTAGE (V) DROPOUT VOLTAGE (mV) 200 OUTPUT NOISE (µV/√Hz) GND Pin Current vs. Output Current Feedback Voltage vs. Output Current Dropout Voltage vs. Output Current 100 1000 60 50 40 30 VIN =1.2V VOUT = 1.0V 20 IOUT = 1.5A 10 COUT = 22µF 0 0.01 0.1 1 10 100 1000 FREQUENCY (kHz) Case Temperature*: The temperature measurement was taken at the hottest point on the MIC61150 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. November 2010 7 M9999-112210-A Micrel, Inc. MIC61150 Functional Characteristics November 2010 8 M9999-112210-A Micrel, Inc. MIC61150 Functional Characteristics (Continued) November 2010 9 M9999-112210-A Micrel, Inc. MIC61150 Functional Characteristics (Continued) November 2010 10 M9999-112210-A Micrel, Inc. MIC61150 Functional Diagram Figure 1. MIC61150 Block Diagram – Fixed Figure 2. MIC61150 Block Diagram – Adjustable November 2010 11 M9999-112210-A Micrel, Inc. MIC61150 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 MIC61150 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 MIC61150 is an ultra-high-performance, low-dropout linear regulator designed for high-current applications that require low input voltage operation. The MIC61150 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 MIC61150 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 MIC61150 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 MIC61150. 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 MIC61150 requires a 22µF ceramic output capacitor. However, any other type of capacitor can be placed in parallel as long as the 22µF ceramic output capacitor is placed next to the MIC61150. Output voltages below 0.8V require either a 47µF or 2x 22µF 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, although larger value capacitors can be used for a longer turn-on time. November 2010 Minimum Load Current The MIC61150 requires a minimum load of 10mA to maintain output voltage regulation. 12 M9999-112210-A Micrel, Inc. MIC61150 Adjustable Regulator Design The MIC61150 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 MIC61150. TJ = (θJA × PD) + TA = (60.7°C/W × 0.468W) + 75°C = 103.4°C Eq. 5 Table 1. Resistor Selection for Specific VOUT November 2010 13 M9999-112210-A Micrel, Inc. MIC61150 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 MIC61150 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. November 2010 14 M9999-112210-A Micrel, Inc. MIC61150 MIC61150YML Evaluation Board Schematic (3mm × 3mm 10-Pin ePad MLF®) Bill of Materials Item Part Number C0805ZD106KAT2A C1 C2012X5R1C106M GRM219R61A106KE44D C2012X5R0J226M C2 C3 GRM21BR60J226ME39L Manufacturer Description (1) 10µF/10V Ceramic Capacitor, X5R,Size 0805 (2) 10µF/10V Ceramic Capacitor, X5R,Size 0805 AVX TDK Murata(3) TDK(2) (3) Murata 1 10µF/10V Ceramic Capacitor, X5R,Size 0805 22µF/6.3V Ceramic Capacitor, X5R, Size 0805 or 22µF/6.3V Ceramic Capacitor, X5R, Size 0805 or 08056D226MAT2A AVX(1) 22µF/6.3V Ceramic Capacitor, X5R, Size 0805 C06035C104KAT2A AVX(1) 0.1µF/50V Ceramic Capacitor, X7R, Size 0603 (3) Qty. 1 1 GRM188R71H104KA93D Murata 0.1µF/50V Ceramic Capacitor, X7R, Size 0603 R1 CRCW060369R8FKEA Vishay(4) 69.8Ω Film Resistor, Size 0603, 1% 1 R2 CRCW060349R9FKEA Vishay(4) 49.9Ω Film Resistor, Size 0603, 1% 1 CRCW060310K0FKEA (4) 10kΩ Film Resistor, Size 0603, 1% 1 R3 R4 CRCW080500R0F U1 MIC61150YML Vishay (4) Vishay Micrel, Inc.(5) 0Ω Film Resistor, Size 0603, 1% 1 1.5A Low-Voltage, Single-Supply LDO 1 Notes: 1. AVX: www.avx.com. 2. TDK: www.tdk.com. 3. Murata: www.murata.com. 4. Vishay: www.vishay.com. 5. Micrel, Inc.: www.micrel.com. November 2010 15 M9999-112210-A Micrel, Inc. MIC61150 MIC61150YML PCB Layout Recommendations MIC61150YML Evaluation Board – Top Layer MIC61150YML Evaluation Board – Bottom Layer November 2010 16 M9999-112210-A Micrel, Inc. MIC61150 MIC61150YMME Evaluation Board Schematic (10-Pin ePad MSOP) Bill of Materials Item Part Number C0805ZD106KAT2A C1 C2012X5R1C106M GRM219R61A106KE44D C2012X5R0J226M C2 C3 GRM21BR60J226ME39L Manufacturer Description (1) 10µF/10V Ceramic Capacitor, X5R,Size 0805 (2 10µF/10V Ceramic Capacitor, X5R,Size 0805 AVX TDK (3) Murata Qty. 1 10µF/10V Ceramic Capacitor, X5R,Size 0805 TDK(2) 22µF/6.3V Ceramic Capacitor, X5R, Size 0805 or Murata(3) 22µF/6.3V Ceramic Capacitor, X5R, Size 0805 or 08056D226MAT2A (1) AVX 22µF/6.3V Ceramic Capacitor, X5R, Size 0805 C06035C104KAT2A AVX(1) 0.1µF/50V Ceramic Capacitor, X7R, Size 0603 (3) 1 1 GRM188R71H104KA93D Murata 0.1µF/50V Ceramic Capacitor, X7R, Size 0603 CRCW060369R8FKEA Vishay(4) 69.8Ω Film Resistor, Size 0603, 1% 1 R2 CRCW060349R9FKEA (4) Vishay 49.9Ω Film Resistor, Size 0603, 1% 1 R3 CRCW060310K0FKEA Vishay(4) 10kΩ Film Resistor, Size 0603, 1% 1 0Ω Film Resistor, Size 0603, 1% 1 1.5A Low-Voltage, Single-Supply LDO 1 R1 R4 U1 CRCW080500R0F MIC61150YMME (4) Vishay Micrel, Inc. (5) Notes: 1. AVX: www.avx.com. 2. TDK: www.tdk.com. 3. Murata: www.murata.com. 4. Vishay: www.vishay.com. 5. Micrel, Inc.: www.micrel.com. November 2010 17 M9999-112210-A Micrel, Inc. MIC61150 MIC61150YMME PCB Layout Recommendations MIC61150YMME Evaluation Board – Top Layer MIC61150YMME Evaluation Board – Bottom Layer November 2010 18 M9999-112210-A Micrel, Inc. MIC61150 Package Information 10-Pin 3mm x 3mm MLF® (ML) November 2010 19 M9999-112210-A Micrel, Inc. MIC61150 Package Information (Continued) 10-Pin e-PAD MSOP (MME) November 2010 20 M9999-112210-A Micrel, Inc. MIC61150 Landing Pattern 10-Pin 3mm x 3mm MLF® (ML) November 2010 21 M9999-112210-A Micrel, Inc. MIC61150 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. November 2010 22 M9999-112210-A