MIC5380/1 High Performance Dual 150mA LDO 1mm x 1mm Thin MLF(R) General Description Features The MIC5380/1 is an advanced dual LDO ideal for powering space constrained portable devices. The MIC5380/1 provides two independently controlled, high performance 150mA LDOs in an ultra small 1mm x 1mm (R) Thin MLF package. Ideal for battery powered applications, the MIC5380/1 offers 1% typical accuracy, low dropout voltage (155mV at 150mA) and low ground current. The MIC5380/1 can also be put into a zero-off-mode current state, drawing virtually no current when disabled. The MIC5380/1 offers fast transient response and high PSRR while consuming minimal operating current. When the MIC5381 is disabled an internal resistive load is automatically applied to the output to discharge the output capacitor. The MIC5380/1 is available with fixed output voltages in a (R) lead-free (RoHS compliant) 6-pin 1mm x 1mm Thin MLF package. Data sheets and support documentation can be found on Micrel's web site at: www.micrel.com. * * * * * * * * * * * (R) 6-pin 1mm x 1mm Thin MLF package 2.5V to 5.5V input voltage range 150mA output current per LDO High output accuracy 1% typical Low quiescent current 32A per LDO Stable with 0402 1F ceramic output capacitors Low dropout voltage 155mV at 150mA Output discharge circuit on MIC5381 Independent enable pins Thermal shutdown protection Current limit protection Applications * * * * * * Bluetooth headsets Mobile phones GPS, PMP, PDAs , DSCs USB thumb drive Medical handheld Portable handheld electronics ___________________________________________________________________________________________________________ Typical Application MIC5380/1-xxYFT VBAT 1F VIN VOUT1 I/O EN1 VOUT2 VCORE 1F EN2 1F GND Camera DSP Power Supply Circuit 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 2008 M9999-110608-A Micrel, Inc. MIC5380/1 Block Diagrams VIN VOUT1 LDO1 LDO2 EN1 EN2 VOUT2 ENABLE REFERENCE GND MIC5380 Block Diagram VIN VOUT1 LDO1 LDO2 EN1 EN2 VOUT2 ENABLE AUTO DISCHARGE REFERENCE GND MIC5381 Block Diagram November 2008 2 M9999-110608-A Micrel, Inc. MIC5380/1 Ordering Information Lead Free (1) Part Number Manufacturing Part Number Marking (2) Code Voltage2 Junction Temp. Range Package MIC5380-3.3/3.3YFT MIC5380-SSYFT S2 3.3V 3.3V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-3.0/3.0YFT MIC5380-PPYFT 2P 3.0V 3.0V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-2.85/1.8YFT MIC5380-NGYFT NG 2.85V 1.8V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-2.8/1.8YFT MIC5380-MGYFT GM 2.8V 1.8V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-2.8/1.2YFT MIC5380-M4YFT 4M 2.8V 1.2V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-2.7/2.7YFT MIC5380-LLYFT 2L 2.7V 2.7V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-2.6/2.0YFT MIC5380-KHYFT KH 2.6V 2.0V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5380-1.8/1.2YFT MIC5380-G4YFT 4G 1.8V 1.2V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5381-3.3/3.3YFT * MIC5381-SSYFT MK 3.3V 3.3V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5381-3.0/3.0YFT * MIC5381-PPYFT MF 3.0V 3.0V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5381-2.8/1.8YFT * MIC5381-MGYFT MG 2.8V 1.8V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5381-2.8/1.2YFT * MIC5381-M4YFT M4 2.8V 1.2V -40 to +125C 6-Pin 1x1 Thin MLF (R) MIC5381-1.8/1.2YFT * MIC5381-G4YFT G4 1.8V 1.2V -40 to +125C 6-Pin 1x1 Thin MLF (R) Voltage1 (3) Note: 1. Other voltages available. Contact Micrel for details. 2. Thin MLF(R) Pin 1 Identifier = . 3. Thin MLF(R) is a GREEN RoHS compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free. * MIC5381 offers Auto-Discharge function. November 2008 3 M9999-110608-A Micrel, Inc. MIC5380/1 Pin Configuration VIN 6 VOUT1 1 VOUT2 2 5 GND 4 EN1 3 EN2 (R) 6-Pin 1mm x 1mm Thin MLF (FT) (Top View) Pin Description Pin Number Pin Name 1 VOUT1 Regulator Output - LDO1. 2 VOUT2 Regulator Output - LDO2. 3 EN2 Enable Input (regulator 2). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 4 EN1 Enable Input (regulator 1). Active High Input. Logic High = On; Logic Low = Off; Do not leave floating. 5 GND Ground. 6 VIN Supply Input. November 2008 Pin Function 4 M9999-110608-A Micrel, Inc. MIC5380/1 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ........................................ -0.3V to +6V Enable Voltage (VEN1, VEN2)............................... -0.3V to VIN (3) Power Dissipation (PD) ........................... Internally Limited Lead Temperature (soldering, 10sec.)....................... 260C Junction Temperature (TJ) ........................ -40C to +125C Storage Temperature (Ts) ......................... -65C to +150C (4) ESD Rating .................................................................. 2kV Supply Voltage (VIN)....................................... +2.5V to 5.5V Enable Voltage (VEN1, VEN2)............................... -0.3V to VIN Junction Temperature (TJ) ........................ -40C to +125C Junction Thermal Resistance 1mm x 1mm Thin MLF-6 (JA) .........................150C/W Electrical Characteristics(5) VIN = VEN1 = VEN2 = VOUT + 1V; higher of the two regulator outputs; IOUTLDO1 = IOUTLDO2 = 100A; COUT1 = COUT2 = 1F; TJ = 25C, bold values indicate -40C to +125C, unless noted. Parameter Output Voltage Accuracy Condition Min Variation from nominal VOUT Typ Max Units +3.0 % 1 Variation from nominal VOUT; -40C to +85C -3.0 % Line Regulation VIN = VOUT +1V to 5.5V, IOUT = 100A 0.02 0.3 %/V Load Regulation IOUT = 100A to 150mA 0.3 1 % Dropout Voltage IOUT = 50mA 55 110 mV IOUT = 150mA 155 310 mV VEN1 = High; VEN2 = Low; IOUT = 0mA 32 45 A VEN1 = Low; VEN2 = High; IOUT = 0mA 32 45 A VEN1 = VEN2 = High; IOUT1 = IOUT2 = 0mA 59 85 A 0.05 1 A Ground Pin Current Ground Pin Current in Shutdown VEN1 = VEN2 = 0V Ripple Rejection f = 1kHz; COUT = 1F Current Limit VOUT = 0V Output Voltage Noise COUT = 1F, 10Hz to 100kHz 200 VRMS Auto-Discharge NFET Resistance MIC5381 Only; VEN1 = VEN2 = 0V; VIN = 3.6V 30 60 200 325 dB 550 mA Enable Inputs (EN1/EN2) Enable Input Voltage Logic Low 0.2 Logic High Enable Input Current Turn-on Time V V 1.2 VIL 0.2V 0.01 1 A VIH 1.2V 0.01 1 A COUT = 1F 50 125 s 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) / JA. 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, 1.5k in series with 100pF. 5. Specification for packaged product only. November 2008 5 M9999-110608-A Micrel, Inc. MIC5380/1 Typical Characteristics Power Supply Rejection Ratio Output Voltage vs. Input Voltage 3.0 100A 2.86 2.84 LDO1-100A 2.0 2.82 1.5 LDO2-100A LDO2-150mA 1.0 VIN = VEN = 3.8V VOUT = 2.8V COUT = 1F 0 10 100 1k 10k 100k FREQUENCY (Hz) 0.5 1M Ground Current vs. Input Voltage 32 30 28 20 2.5 180 Dual Output 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 5.5 Dropout Voltage vs. Output Current VIN=5.5V VIN = VEN VOUT = 2.8V CIN = COUT = 1F 2.74 2.72 2.70 0 25 50 75 100 125 150 OUTPUT CURRENT (mA) Ground Current vs. Temperature 65 Dual Output(100A) 60 50 VOUT1 = 2.8V 45 VOUT2 = 1.8V 40 30 VIN = VEN VOUT2 = 1.8V CIN = COUT = 1F 2.78 2.76 50 Single Output VEN = VIN = VOUT + 1V VOUT1 = 2.8V VOUT2 = 1.2V CIN = COUT = 1F 20 10 0 0 250 25 50 75 100 125 150 OUTPUT CURRENT (mA) Dropout Voltage vs. Temperature CIN = COUT = 1F 200 150mA VIN=3.8V 2.80 55 40 140 V IN = V EN = 3.8V CIN = C OUT = 1F Single Output(50mA) 35 30 Single Outputs(100A) 25 20 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) 500 Current Limit vs. Input Voltage 400 LDO1 120 150 100 80 100mA 100 60 300 LDO2 200 50mA 40 VOUT = 2.8V CIN = COUT = 1F 20 1.0 Ground Current vs. Output Current VIN=4.8V 60 160 0 0 VOUT1 = 2.8V VOUT2 = 1.8V CIN = COUT =1F 3.0 3.5 4.0 4.5 5.0 5.5 INPUT VOLTAGE (V) 70 100A 26 24 22 0 2.5 80 40 50mA 38 36 34 150mA 2.90 2.88 LDO1-150mA 2.5 Output Voltage vs. Output Current 25 50 75 100 125 150 OUTPUT CURRENT (mA) Enable Voltage vs. Input Voltage 0.6 10mA 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C) 10 EN1 ON 0.8 100 50 0 2.5 VOUT1 = 2.8V VOUT2 = 1.8V CIN = COUT = 1F 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) 5.5 Output Noise Spectral Density 1 EN1 OFF 0.1 0.4 VOUT1 = 2.8V CIN = COUT = 1F Load = 150mA 0.2 0 3.0 3.5 4.0 4.5 5.0 INPUT VOLTAGE (V) November 2008 5.5 0.01 0.001 10 V IN = 4.5V V OUT = 1.2V COUT = 1F 100 1k 10k 100k 1M 10M FREQUENCY (Hz) 6 M9999-110608-A Micrel, Inc. MIC5380/1 Functional Characteristics November 2008 7 M9999-110608-A Micrel, Inc. MIC5380/1 Enable/Shutdown The MIC5380/1 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 a "zero" off-mode-current state. In this state, current consumed by the regulator goes nearly to zero. When disabled the MIC5381 switches a 30 (typical) 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 the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. Application Information MIC5380/1 is a dual 150mA LDO in a small 1mm x 1mm (R) Thin MLF package. The MIC5381 includes an autodischarge circuit for each of the LDO outputs that is activated when the output is disabled. The MIC5380/1 regulator is fully protected from damage due to fault conditions through linear current limiting and thermal shutdown. Input Capacitor The MIC5380/1 is a high-performance, high bandwidth device. An input capacitor of 1F capacitor 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 MIC5380/1 is designed to provide 150mA of continuous current for both outputs in a very small package. Maximum ambient operating temperature can be calculated based upon the output current and the voltage drop across the part. For example, if the input voltage is 3.6V, and the output voltage 3.0V for VOUT1, 3.0V for VOUT2 and output current = 150mA, then the actual power dissipation of the regulator circuit can be calculated using the equation: PD = (VIN - VOUT1) IOUT1 + (VIN - VOUT2) I OUT2 + VIN IGND Because this device is CMOS and the ground current is typically <100A over the load range, the power dissipation contributed by the ground current is < 1% and can be ignored for this calculation. PD = (3.6V - 3.0V) x 150mA + (3.6V - 3.0V) x 150mA PD = 0.18W 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 MIC5380/1 requires an output capacitor of 1F 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 1F 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. TJ(MAX) - TA PD(MAX) = JA TJ(max) = 125C, and the maximum junction temperature of the die, JA, thermal resistance = 150C/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-toambient thermal resistance for the minimum footprint is 150C/W. The maximum power dissipation must not be exceeded for proper operation. No-Load Stability Unlike many other voltage regulators, the MIC5380/1 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications. November 2008 8 M9999-110608-A Micrel, Inc. MIC5380/1 For example, when operating the MIC5380-PPYFT at an input voltage of 3.6V and 150mA loads at each output with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.18W = (125C - TA)/(150C/W) TA = 98C November 2008 Therefore, a 3.0V/3.0V application, with 150mA at each output current, can accept an ambient operating (R) temperature of 98C in a 1mm x 1mm 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 M9999-110608-A Micrel, Inc. MIC5380/1 U1 MIC5380/1-xxYFT J1 VIN 6 VIN 2 VOUT2 J7 EN1 4 EN1 GND C3 1F/10V 5 J3 VOUT1 J5 VOUT2 1 VOUT1 EN2 J8 EN2 3 C1 1F/10V C2 1F/10V J2 GND J4 GND J6 GND Bill of Materials Item Part Number Manufacturer GRM155R61A105KE19D Murata C1005X5R1A105K TDK C1, C2, C3 0402ZD105KAT2A U1 MIC5380/1-xxYFT (1) Description Capacitor, 1F Ceramic, 10V, X5R, Size 0402 (2) Capacitor, 1F Ceramic, 10V, X5R, Size 0402 (3) Capacitor, 1F Ceramic, 10V, X5R, Size 0402 AVX (4) Micrel Qty. 3 (R) Dual, 150mA LDO, Size 1mm x 1mm Thin MLF 1 Notes: 1. Murata: www.murata.com 2. TDK: www.tdk.com 3. AVX: avx.com 4. Micrel, Inc.: www.micrel.com November 2008 10 M9999-110608-A Micrel, Inc. MIC5380/1 PCB Layout Recommendations Top Layer Bottom Layer November 2008 11 M9999-110608-A Micrel, Inc. MIC5380/1 Package Information (R) 6-Pin 1mm x 1mm Thin MLF (FT) 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. (c) 2008 Micrel, Incorporated. November 2008 12 M9999-110608-A