MIC5338/9 Dual 300mA µCap LDO in 1.6mm x 1.6mm Thin MLF® General Description Features The MIC5338/9 is an advanced dual 300mA LDO ideal for powering general purpose portable devices requiring low output noise and excellent Power Supply Rejection Ratio (PSRR). The MIC5338/9 provides two independently controlled, high performance, 300mA LDOs in a tiny 1.6mm x 1.6mm Thin MLF® package. The MIC5338/9 provides two low noise outputs with fast transient response. Additionally the MIC5338/9 provides low quiescent current operation, using only 70μA with both outputs enabled. The MIC5339 also incorporates an active discharge feature that pulls down the output of the regulator when the part is disabled. The MIC5338/9 is available in fixed output voltages in a lead-free (RoHS compliant) 6-pin 1.6mm x 1.6mm Thin MLF® leadless package. Data sheets and support documentation can be found on Micrel’s web site at www.micrel.com. • • • • • • • • • • • • 2.5V to 5.5V input voltage range Two 300mA outputs High output accuracy – 2% Low quiescent current – 70µA total Stable with ceramic output capacitors Independent enable pins Low dropout voltage – 220mV at 300mA Low output noise Thermal shutdown protection Current limit protection Output discharge circuit – MIC5339 6-pin 1.6mm x 1.6mm Thin MLF® package Applications • • • • Mobile phones Camera phones GPS, PMP, PDAs and handhelds Portable electronics ___________________________________________________________________________________________________________ Typical Application Camera Module Power Supply 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 M9999-063010-A Micrel, Inc. MIC5338/9 Ordering Information Manufacturing Part Number Marking Code Voltage(1 Junction Temp. Range Package(2) ) MIC5338-SMYMT S82 3.3V/2.8V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF® Pb-Free ® Pb-Free ® Pb-Free ® Pb-Free ® Pb-Free ® Part Number MIC5338-3.3/2.8YMT1 MIC5338-2.8/1.8YMT MIC5338-2.8/1.2YMT 1 MIC5338-1.8/1.2YMT MIC5338-1.2/1.0YMT 1 1 1 MIC5339-3.3/2.8YMT* MIC5339-2.8/1.8YMT* 1 MIC5339-2.8/1.2YMT* 1 MIC5339-1.8/1.2YMT* MIC5339-1.2/1.0YMT*1 Lead Finish(3) MIC5338-MGYMT S83 2.8V/1.8V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF MIC5338-M4YMT S84 2.8V/1.2V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF S85 MIC5338-G4YMT S86 MIC5338-4CYMT 1.8V/1.2V 1.2V/1.0V –40° to +125°C –40° to +125°C 6-Pin 1.6x1.6 Thin MLF 6-Pin 1.6x1.6 Thin MLF MIC5339-SMYMT S92 3.3V/2.8V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF Pb-Free MIC5339-MGYMT S93 2.8V/1.8V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF® Pb-Free –40° to +125°C ® Pb-Free ® S94 MIC5339-M4YMT 2.8V/1.2V 6-Pin 1.6x1.6 Thin MLF MIC5339-G4YMT S95 1.8V/1.2V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF Pb-Free MIC5339-4CYMT S96 1.2V/1.0V –40° to +125°C 6-Pin 1.6x1.6 Thin MLF® Pb-Free Note: 1. Contact Micrel for availability. 2. Thin MLF Pin 1 Identifier= “▲” 3. Thin MLF is a GREEN RoHS compliant package. Level finish is NiPdAu. Mold compound is Halogen Free. * MIC5339 offers Auto-Discharge function. ® ® Pin Configuration 6-Pin 1.6mm x 1.6mm Thin MLF® (MT) Pin Description Pin Number Pin Name Pin Function 1 VIN Supply Input. 2 GND Ground. 3 EN2 Enable Input LDO2. Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 4 EN1 Enable Input LDO1. Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 5 VOUT2 LDO2 Output. 6 VOUT1 LDO1 Output. EPAD HSPAD Heatsink pad. Connect to ground. June 2010 2 M9999-063010-A Micrel, Inc. MIC5338/9 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ........................................ –0.3V to +6V Enable Voltage (VEN1, VEN2). .............................. –0.3V to VIN Power Dissipation (PD) ........................... Internally Limited(3) Lead Temperature (soldering, 10sec.)....................... 260°C Junction Temperature (TJ) ........................–40°C to +125°C Storage Temperature (Ts) .........................–65°C to +150°C ESD Rating(4) ................................................. ESD Sensitive Supply Voltage (VIN)....................................... +2.5V to 5.5V Enable Voltage (VEN1, VEN2). ................................... 0V to VIN Junction Temperature (TJ) ........................ –40°C to +125°C Junction Thermal Resistance 1.6mm x 1.6mm Thin MLF® (θJA) ...................92.4°C/W Electrical Characteristics(5) VIN = VEN1 = VEN2 = VOUT + 1V; higher of the two outputs; IOUTLDO1 = IOUTLDO2 = 100µA; COUT1 = COUT2 = 1µF; 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 Min Typ Max Units -2.0 +2.0 % -3.0 +3.0 % Line Regulation VIN = VOUT +1V to 5.5V, IOUT = 100µA 0.02 0.3 %/V Load Regulation IOUT = 100µA to 300mA 0.3 1 % Dropout Voltage Ground Pin Current IOUT = 50mA 35 65 mV IOUT = 300mA 220 380 mV VEN1 = High; VEN2 = Low; IOUT1 = 0mA 38 58 µA VEN1 = Low; VEN2 = High; IOUT2 = 0mA 38 58 µA VEN1 = VEN2 = High; IOUT1 = IOUT2 = 0mA 70 110 µA VEN1 = High; VEN2 = Low; IOUT1 = 300mA 55 70 µA VEN1 = Low; VEN2 = High; IOUT2 = 300mA 55 70 µA VEN1 = VEN2 = High; IOUT1 = IOUT2 = 300mA 105 135 µA Shutdown Current VEN1 = VEN2 ≤0.2V 0.05 1 µA Ripple Rejection f = 1kHz; COUT = 1µF Current Limit VOUT = 0V 55 325 500 dB 680 mA Output Voltage Noise COUT = 1µF, 10Hz to 100kHz 200 µVRMS Auto-Discharge NFET Resistance MIC5339 Only; VEN1 = VEN2 = 0V; VIN = 3.6V; IOUT = -3mA 30 Ω Enable Inputs (EN1/EN2) Enable Input Voltage 0.2 Logic Low 1.2 Logic High Enable Input Current V 1 µA 0.01 1 µA 50 125 µs VIL ≤ 0.2V 0.01 VIH ≥ 1.2V Turn-on Time V 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. June 2010 3 M9999-063010-A Micrel, Inc. MIC5338/9 Typical Characteristics Power Supply Rejection Ratio -100 3.4 150mA -90 No-Load -50 -40 300mA -30 -20 VIN =VEN =3.8V VOUT=1.8V 1010 2.4 1,000 1K 1 0,000 10K 1100K 00,000 Output Voltage vs. Output Current GROUND CURRENT (μA) OUTPUT VOLTAGE (V) 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 2.4 2.2 VIN =3.8V 2.0 CIN =COUT=1μF 1.8 2.5 5.5 60 1.6 50 300mA 40 30 No Load 20 VOUT=2.8V CIN =COUT=1μF 10 50 100 150 200 250 300 5.5 100 300mA 80 60 No Load 40 VOUT1=2.8V, VOUT2=1.8V CIN =COUT=1μF 20 VEN1=VEN2=VIN 0 2.5 Ground Current vs. Output Current 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 120 0 OUTPUT CURRENT (mA) 3.0 Ground Current vs. Input Voltage (Dual Outputs) 140 VEN2=GND,VEN1=VIN 1.4 60 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 2.5 5.5 Ground Current vs. Temperature (Single Output) 3.0 3.5 4.0 4.5 INPUT VOLTAGE (V) 5.0 5.5 Ground Current vs. Temperature (Dual Outputs) 100 90 100 GROUND CURRENT (μA) GROUND CURRENT (μA) CIN =COUT=1μF Ground Current vs. Input Voltage (Single Output) 70 2.6 120 300mA 1.6 1.4 2.5 2.8 Dual Outputs 80 Single Output 60 40 VIN =3.8V 20 CIN =COUT=1μF 0 50 100 150 200 250 300 30 No Load 20 VOUT1=2.8V VEN1=VIN=3.8V VEN2=GND 10 0 20 40 60 80 TEMPERATURE (°C) 150mA 100 50mA 50 DROPOUT VOLTAGE (mV) 200 Dropout Voltage vs. Output Current -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) June 2010 60 No Load 50 40 VOUT1 =2.8V 30 VOUT2 =1.8V 20 VEN1 =VEN2 =VIN=3.8V 10 CIN=COUT =1μF 0 20 40 60 80 100 120 TEMPERATURE (°C) Current Limit vs. Input Voltage 700 650 180 160 600 140 VOUT1=2.8V 550 120 100 500 80 60 VOUT2=1.8V 450 40 VOUT1=2.8V 20 CIN=COUT =1μF 0 50 100 150 200 250 OUTPUT CURRENT (mA) 4 VIN =3.8V 400 0 0 70 -40 -20 100 120 200 300mA 300mA 80 0 220 CIN=COUT =1μF 150 40 -40 -20 Dropout Voltage vs. Temperature 250 300mA 0 OUTPUT CURRENT (mA) 300 50 CIN=COUT=1μF 0 DROPOUT VOLTAGE (mV) 1.8 2.0 1,000,000 1M 10,000,000 10M Frequency (Hz) 0 100μA CIN =COUT=1μF 100 100 3.0 2.0 2.2 COUT=1μF 10 300mA GROUND CURRENT (μA) 0 2.8 2.6 2.2 GROUND CURRENT (μA) -10 100μA CURRENT LIMIT (mA) dB -60 3.0 OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) -70 Output Voltage vs. Input Voltage 2.4 3.2 -80 20 Output Voltage vs. Input Voltage 300 CIN=COUT=1μF 350 2.5 3 3.5 4 4.5 INPUT VOLTAGE (V) 5 5.5 M9999-063010-A Micrel, Inc. Output Noise Spectral Density 1 Noise µV/√Hz MIC5338/9 0.1 0.01 VIN =4.5V COUT=1µF VOUT1=2.8V Iload=50mA 0.001 110 0 100 100 1,000 1K 10,000 10K 1100K 00,000 1,000,000 1M 10,000,000 10M Frequency (Hz) June 2010 5 M9999-063010-A Micrel, Inc. MIC5338/9 Functional Characteristics June 2010 6 M9999-063010-A Micrel, Inc. MIC5338/9 Functional Diagrams MIC5338 Block Diagram MIC5339 Block Diagram June 2010 7 M9999-063010-A Micrel, Inc. MIC5338/9 Application Information Enable/Shutdown The MIC5338/9 comes with two active high enable pins that allow each regulator to be disabled independently. Forcing the enable pin low disables the regulator and sends it into an off mode current state drawing virtually zero current. When disabled, the MIC5339 switches an internal 30Ω load on the regulator output to discharge the external capacitor. Forcing the enable pin high enables the output voltage. The active high enable pin uses CMOS technology and cannot be left floating. A floating enable pin may cause an indeterminate state on the output. MIC5338/9 is a dual 300mA LDO. The MIC5339 includes an auto-discharge circuit for each LDO output that is activated when the output is disabled. The MIC5338/9 regulator is fully protected from damage due to fault conditions through linear current limiting and thermal shutdown. Input Capacitor The MIC5338/9 is a high performance, high bandwidth device. An input capacitor of 1µF from the input pin to ground is required to provide stability. Low ESR ceramic capacitors provide optimal performance in small board area. 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 MIC5338/9 is designed to provide two 300mA continuous current outputs in a very small package. Maximum operating temperature can be calculated based on the output currents and the voltage drop across the part. For example, if the input voltage is 3.6V, VOUT1 = 3.3V, VOUT2 = 2.8V and each with an output current = 300mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN – VOUT1) IOUT1 + (VIN – VOUT2) I OUT2 + VIN IGND Because this is CMOS device and the ground current is typically <100µA over the load range, the power dissipation contributed by the ground current is < 1% which can be ignored for this calculation. PD = (3.6V – 3.3V) × 300mA + (3.6V – 2.8V) × 300mA PD = 0.33W 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: Output Capacitor The MIC5338/9 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 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 and X5R dielectric ceramic capacitors are recommended because of their temperature performance. X7R 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. ⎛ TJ(MAX) − TA PD(MAX) = ⎜⎜ θ JA ⎝ TJ(MAX) = 125°C θJA = 92.4°C/W Substituting PD for PD(MAX) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The junction to ambient 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 MIC5338/9 will remain stable and in regulation with no load. June 2010 ⎞ ⎟ ⎟ ⎠ 8 M9999-063010-A Micrel, Inc. MIC5338/9 For example, when operating a 3.3V/2.8V application with an input voltage of 3.6V and 300mA at each output with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.33W = (125°C – TA)/(92.4°C/W) TA = 94.5°C June 2010 Therefore, a MIC5338-SMYMT application with 300mA at each output current can accept an ambient operating temperature of 94.5°C 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 9 M9999-063010-A Micrel, Inc. MIC5338/9 Typical Application Schematic Bill of Materials Item Part Number Manufacturer C1, C2, C3 GRM188R60J225KE19D Murata(1) U1 MIC5338/9-xxYMT Micrel (2) Description Qty. Capacitor, 1µF Ceramic, 6.3V, X5R, Size 0603 3 ® Dual, 300mA LDO, Size 1.6mm x 1.6mm Thin MLF 1 Notes: 1. Murata: www.murata.com 2. Micrel, Inc.: www.micrel.com June 2010 10 M9999-063010-A Micrel, Inc. MIC5338/9 PCB Layout Recommendations Top Layer Bottom Layer June 2010 11 M9999-063010-A Micrel, Inc. MIC5338/9 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 12 M9999-063010-A