MIC5367/8 High Performance 200mA Peak LDO in 1.6mm x 1.6mm Thin MLF® General Description Features The MIC5367/8 is an advanced general purpose linear regulator offering high power supply rejection (PSRR) in an ultra-small 1.6mm x 1.6mm package. The MIC5368 includes an auto-discharge feature that is activated when the enable pin is low. The MIC5367/8 is capable of sourcing 200mA peak (150mA continous) output current and offers high PSRR making it an ideal solution for any portable electronic application. Ideal for battery powered applications, the MIC5367/8 offers 2% initial accuracy, low dropout voltage (180mV @ 150mA), and low ground current (typically 29µA). The MIC5367/8 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. The MIC5367/8 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. • • • • • • • • • Input voltage range: 2.5V to 5.5V 200mA peak (150mA continuous) output current Stable with 1µF ceramic output capacitors Low dropout voltage – 180mV @ 150mA Excellent Load/Line Transient Response Low quiescent current – 29µA High PSRR – 65dB Output discharge circuit – MIC5368 High output accuracy – ±2% initial accuracy • Tiny 1.6mm x 1.6mm Thin MLF® package • Thermal shutdown and current limit protection Applications • • • • Mobile phones Digital cameras GPS, PDAs, PMP, handhelds Portable electronics ___________________________________________________________________________________________________________ Typical Application 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 June 2010 M9999-060110-A Micrel, Inc. MIC5367/8 Block Diagram MIC5367 Block Diagram MIC5368 Block Diagram June 2010 2 M9999-060110-A Micrel, Inc. MIC5367/8 Ordering Information Part Number(1) Marking Code Output Voltage Temperature Range Package(2) Lead Finish(3) MIC5367-1.2YMT 674 1.2V –40°C to +125°C 6-Pin 1.6mm x 1.6mm Thin MLF® Pb-Free MIC5367-1.5YMT F67 1.5V –40°C to +125°C 6-Pin 1.6mm x 1.6mm Thin MLF® Pb-Free ® Pb-Free MIC5367-3.3YMT 67S 3.3V –40°C to +125°C 6-Pin 1.6mm x 1.6mm Thin MLF MIC5368-1.2YMT* 684 1.2V –40°C to +125°C 6-Pin 1.6mm x 1.6mm Thin MLF® Pb-Free ® Pb-Free Pb-Free MIC5368-1.5YMT* F68 1.5V –40°C to +125°C 6-Pin 1.6mm x 1.6mm Thin MLF MIC5368-3.3YMT* 68S 3.3V –40°C to +125°C 6-Pin 1.6mm x 1.6mm Thin MLF® Notes: 1. Other voltages available. Contact Micrel for details. 2. Thin MLF ▲ = Pin 1 identifier. 3. Thin MLF is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. * MIC5368 offers Auto-Discharge function. ® ® Pin Configuration 6-Pin 1.6mm x 1.6mm Thin MLF® (MT) Pin Description Pin Number Pin Name 1 EN 2 GND Ground. 3 VIN Supply Input. 4 VOUT 5 NC No Connect (Not internally connected). 6 NC No Connect (Not internally connected). EP HS Pad June 2010 Pin Function Enable Input: Active High. High = ON; Low = OFF. Do not leave floating. Output Voltage. Exposed Heatsink Pad. 3 M9999-060110-A Micrel, Inc. MIC5367/8 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ............................................... 0V to 6V Enable Voltage (VEN).............................................. 0V to VIN Power Dissipation (PD) ........................... Internally Limited(3) Lead Temperature (soldering, 10sec)........................ 260°C Junction Temperature (TJ) ........................–40°C to +150°C Storage Temperature (Ts) .........................–65°C to +150°C ESD Rating(4) .................................................................. 2kV Supply Voltage (VIN)......................................... 2.5V to 5.5V Enable Voltage (VEN).............................................. 0V to VIN Junction Temperature (TJ) ........................ –40°C to +125°C Junction Thermal Resistance 1.6 x1.6 Thin MLF-6 (θJA) ...............................92.4°C/W Electrical Characteristics(5) VIN = VEN = VOUT + 1V; CIN = COUT = 1µF; IOUT = 100µA; TJ = 25°C, bold values indicate –40°C to +125°C, unless noted. Parameter Condition Output Voltage Accuracy Variation from nominal VOUT Variation from nominal VOUT; –40°C to +125°C Line Regulation Min Typ Max Units –2.0 +2.0 % –3.0 +3.0 % 0.3 % VIN = VOUT +1V to 5.5V; IOUT = 100µA 0.02 Load Regulation IOUT = 100µA to 150mA 0.3 1 % Dropout Voltage(7) IOUT = 50mA 60 135 mV IOUT = 150mA 180 380 mV (6) (8) IOUT = 0mA 29 39 µA Ground Pin Current in Shutdown VEN ≤ 0.2V 0.05 1 µA Ripple Rejection f = up to 1kHz; COUT = 1µF Ground Pin Current 65 f = 1kHz – 10kHz; COUT = 1µF dB 55 200 325 dB Current Limit VOUT = 0V 550 mA Output Voltage Noise COUT = 1µF, 10Hz to 100kHz 200 µVRMS Auto-Discharge NFET Resistance MIC5368 Only; VEN = 0V; VIN = 3.6V; IOUT = –3mA 30 Ω Enable Input Enable Input Voltage Logic Low Turn-on Time V 1.2 Logic High Enable Input Current 0.2 V VIL ≤ 0.2V 0.01 1 µA VIH ≥ 1.2V 0.01 1 µA 50 125 µs COUT = 1µF; IOUT = 150mA Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. 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. 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5kΩ in series with 100pF. 5. Specification for packaged product only. 6. 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. 7. Dropout voltage is defined as the input-to-output differential at which the output voltage drops 2% below its nominal value measured at 1V differential. For outputs below 2.5V, dropout voltage is the input-to-output differential with the minimum input voltage 2.5V. 8. Ground pin current is the regulator quiescent current. The total current drawn from the supply is the sum of the load current plus the ground pin current. June 2010 4 M9999-060110-A Micrel, Inc. MIC5367/8 Typical Characteristics DROPOUT VOLTAGE (mV) 100µA -80 -70 75mA dB -60 -50 150mA -40 -30 V IN = 4.35V -20 V OUT = 3.3V -10 COUT = 1µF 160 200 140 180 120 100 80 60 40 100 1000 10000 100000 120 80 40 10mA 0 25 50 75 100 125 -40 -20 150 0 20 40 60 80 100 120 TEMPERATURE (°C) Ground Current vs. Supply Voltage Ground Current vs. Load current Ground Current vs. Temperature 32 30 100µA 28 26 VEN = V IN 24 VOUT = 3.3V 22 CIN = COUT = 1µF 3.5 4 4.5 5 38 36 34 32 VEN = VIN = VOUT + 1V 30 VOUT = 3.3V 36 100mA 34 32 50mA 30 100µA 28 26 VEN = V IN = VOUT + 1V 24 VOUT = 3.3V 22 28 CIN = COUT = 1µF 20 0 5.5 150mA 38 CIN = COUT = 1µF 20 3 40 GROUND CURRENT (µA) GROUND CURRENT ( µA) 150mA 20 40 60 80 100 120 140 -40 -20 0 20 40 60 80 SUPPLY VOLTAGE (V) LOAD CURRENT (mA) TEMPERATURE (°C) Output Voltage vs. Load Current Output Voltage vs. Supply Voltage Output Voltage vs. Temperature 3.3 3.400 3.350 3.300 3.250 VIN = V EN = V OUT + 1V 3.200 VOUT = 3.3V CIN = COUT = 1µF 3.150 3.5 50mA 3.2 3.1 150mA 3.0 2.9 2.8 VIN = V IN 2.7 VOUT = 3.3V 2.6 COUT = 1µF/10V 20 40 60 80 3.0 10 350 1 NOISE uV/√Hz 400 300 250 V OUT = 3.3V SUPPLY VOLTAGE (V) 3.5 4.0 4.5 5.0 5.5 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) VIN = VEN=4.1V VOUT = 1.5V 0.01 COUT = 1µF I OUT = 150mA Noise(10Hz to 100Khz)=136µVrms 200 5 VOUT = 3.3V CIN = COUT = 1µF 0.1 CIN = COUT = 1µF 4.5 VIN = VOUT + 13V 3.1 Output Noise Spectral Density Current Limit vs. Supply Voltage 4 3.2 IOUT = 150mA SUPPLY VOLTAGE (V) LOAD CURRENT (mA) 3.5 3.3 3.0 2.5 100 120 140 160 3.4 CIN = COUT = 1µF 2.5 3.100 100 120 1mA OUTPUT VOLTAGE (V) 3.4 3.450 OUTPUT VOLTAGE (V) 3.500 June 2010 50mA 60 OUTPUT CURRENT (mA) 34 3 100mA 100 20 40 0 150mA FREQUENCY(Hz) 36 2.5 CIN = COUT = 1µF V OUT = 3.3V 140 CIN = COUT = 1µF 0 1000000 38 GROUND CURRENT (µA) 160 0 10 OUTPUT VOLTAGE (V) VOUT = 3.3V 20 0 CURRENT LIMIT (mA) DROPOUT VOLTAGE (mV) -100 -90 Dropout Voltage vs. Temperature Dropout Voltage vs. Output Current Power Supply Rejection Ratio 5.5 0.001 10 100 1000 10000 100000 1000000 FREQUENCY (Hz) 5 M9999-060110-A Micrel, Inc. MIC5367/8 Functional Characteristics June 2010 6 M9999-060110-A Micrel, Inc. MIC5367/8 Application Information Enable/Shutdown The MIC5367/8 comes with an active-high enable pin that allows the regulator to be disabled. Forcing the enable pin low disables the regulator and sends it into a “zero” off-mode-current state. In this state, current consumed by the regulator goes nearly to zero. Forcing the enable pin high enables the output voltage. The active-high enable pin uses CMOS technology and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. MIC5367 and MIC5368 are Low noise 150mA LDOs. The MIC5368 includes an auto-discharge circuit that is switched on when the regulator is disabled through the Enable pin. The MIC5367/8 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. Input Capacitor The MIC5367/8 is a high-performance, high bandwidth device. An input capacitor of 1µF is required from the input to ground to provide stability. Low-ESR ceramic capacitors provide optimal performance at a minimum of space. Additional high-frequency capacitors, such as small-valued NPO dielectric-type capacitors, help filter out high-frequency noise and are good practice in any RF-based circuit. X5R or X7R dielectrics are recommended for the input capacitor. Y5V dielectrics lose most of their capacitance over temperature and are therefore, not recommended. Thermal Considerations The MIC5367/8 is designed to provide 150mA of continuous current in a very small package. Maximum ambient operating temperature can be calculated based on the output current and the voltage drop across the part. For example if the input voltage is 3.3V, the output voltage is 1.5V, and the output current = 150mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN – VOUT1) I OUT + VIN IGND Because this device is CMOS and the ground current is typically <100µA over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. PD = (3.3V – 1.5V) × 150mA Output Capacitor The MIC5367/8 requires an output capacitor of 1µF or greater to maintain stability. The design is optimized for use with low-ESR ceramic chip capacitors. High ESR capacitors are not recommended because they may cause high frequency oscillation. The output capacitor can be increased, but performance has been optimized for a 1µF ceramic output capacitor and does not improve significantly with larger capacitance. X7R/X5R dielectric-type 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 capacitor to ensure the same minimum capacitance over the equivalent operating temperature range. PD = 0.27W To determine the maximum ambient operating temperature of the package, use the junction-to-ambient thermal resistance of the device and the following basic equation: ⎛ TJ(max) − TA PD(max) = ⎜⎜ θ JA ⎝ TJ(max) = 125°C, the maximum junction temperature of the die, θJA thermal resistance = 92.4°C/W for the YMT package. Substituting PD for PD(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction-toambient thermal resistance for the minimum footprint is 92.4°C/W. The maximum power dissipation must not be exceeded for proper operation. No-Load Stability Unlike many other voltage regulators, the MIC5367/8 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications. June 2010 ⎞ ⎟ ⎟ ⎠ 7 M9999-060110-A Micrel, Inc. MIC5367/8 For example, when operating the MIC5367-1.5YMT at an input voltage of 3.3V and 150mA load with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.27W = (125°C – TA)/(92.4°C/W) TA = 100°C June 2010 Therefore the maximum ambient operating temperature of 100°C is allowed in a 1.6mm x 1.6mm Thin MLF® package. For a full discussion of heat sinking and thermal effects on voltage regulators, refer to the “Regulator Thermals” section of Micrel’s Designing with Low-Dropout Voltage Regulators handbook. This information can be found on Micrel's website at: http://www.micrel.com/_PDF/other/LDOBk_ds.pdf 8 M9999-060110-A Micrel, Inc. MIC5367/8 Bill of Materials Item Part Number C1, C2 GRM155R61A105KE15D U1 MIC5367/8-xxYMT Manufacturer (1) Murata Micrel, Inc.(2) Description Qty. Capacitor, 1µF Ceramic, 10V, X7R, Size 0402 2 High Performance Single 150mA LDO in 1.6x1.6 Thin MLF® 1 Notes: 1. Murata: www.murata.com 2. Micrel, Inc.: www.micrel.com June 2010 9 M9999-060110-A Micrel, Inc. MIC5367/8 PCB Layout Recommendations (1.6mm x 1.6mm Thin MLF®) Top Layer Bottom Layer June 2010 10 M9999-060110-A Micrel, Inc. MIC5367/8 Package Information 6-Pin 1.6mm x 1.6mm Thin MLF® (MT) 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 The information furnished by Micrel in this data sheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use. Micrel reserves the right to change circuitry and specifications at any time without notification to the customer. 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. June 2010 11 M9999-060110-A