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MIC5387
Ultra-Small Triple 150mA Output LDO
General Description
The MIC5387 is an advanced, general-purpose, triple linear regulator offering high power supply rejection (PSRR) in an ultra-small, 6-pin, 1.6mm x 1.6mm Thin MLF(R) package. The MIC5387 is capable of 150mA from each output and offers high PSRR, making it an ideal solution for any portable electronic application. Ideal for battery powered applications, the MIC5387 offers 2% initial accuracy, low dropout voltage (180mV @ 150mA), and low ground current (typically 32A per output). The MIC5387 is available in a lead-free (RoHS compliant) 1.6mm x 1.6mm 6-pin Thin MLF(R) occupying only 2.56mm2 of PCB area, a 36% reduction in board area compared to a 2mm x 2mm Thin MLF(R) package. The MIC5387 has an operating junction temperature range of -40C to +125C. Datasheets and support documentation can be found on Micrel's web site at: www.micrel.com.
Features
* * * * * * * * Input voltage range: 2.5V to 5.5V 150mA guaranteed output current for each output Stable with ceramic output capacitors Low dropout voltage: 180mV @ 150mA Excellent Load/Line Transient Response Low quiescent current: 32A per LDO High PSRR: 70dB High output accuracy - 2% initial accuracy * Thermal-shutdown and current-limit protection * Available in a tiny 6-pin 1.6mm x 1.6mm Thin MLF(R)
Applications
* * * * Mobile phones Digital cameras GPS, PDAs, PMP 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
April 2010
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Micrel, Inc.
MIC5387
Ordering Information
Part Number MIC5387-SGFYMT MIC5387-SG4YMT MIC5387-GMGYMT MIC5387-GMMYMT
Notes: 1. Other voltages available. Contact Micrel for details. 2. MLF = Pin 1 identifier. 3. MLF is a GREEN RoHS-compliant package. Lead finish is NiPdAu. Mold compound is Halogen Free.
(R) (R)
Marking Code 8A7 8B7 8C7 8D7
VOUT1 3.3V 3.3V 1.8V 1.8V
VOUT2 1.8V 1.8V 2.8V 2.8V
VOUT3 1.5V 1.2V 1.8V 2.8V
Temperature Range -40C to +125C -40C to +125C -40C to +125C -40C to +125C
Package 6-Pin 1.6mm x 1.6mm Thin MLF(R) 6-Pin 1.6mm x 1.6mm Thin MLF(R) 6-Pin 1.6mm x 1.6mm Thin MLF(R) 6-Pin 1.6mm x 1.6mm Thin MLF(R)
Pin Configuration
6-Pin 1.6mm x 1.6mm Thin MLF(R) (MT)
Pin Description
Pin Number 1 2 3 4 5 6 EP Pin Names GND VIN EN2/3 OUT3 OUT2 OUT1 HS Pad Pin Function Ground for LDO1, 2 and 3. Input supply for LDO1, 2 and 3. Enable Input 2/3: Enables LDO2 AND LDO3, Active High. High = ON; Low = OFF. Do not leave floating. Output Voltage for LDO3. Output Voltage for LDO2. Output Voltage for LDO1. Exposed Heastsink Pad (connect to Ground plane for best thermal).
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Absolute Maximum Ratings(1)
Supply Voltage (VIN) ........................................ -0.3V to +6V Enable Voltage (VEN2/3)...................................... -0.3V to VIN Power Dissipation (PD) ........................... Internally Limited(3) Lead Temperature (soldering, 10sec)........................ 260C Junction Temperature (TJ) ........................ -40C to +150C Storage Temperature (Ts) ......................... -65C to +150C ESD Rating(4) .................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN)......................................... 2.5V to 5.5V Enable Voltage (VEN2/3) .......................................... 0V to VIN Junction Temperature (TJ) ........................ -40C to +125C Junction Thermal Resistance 6-Pin 1.6mm x 1.6mm Thin MLF(R) (JA) ..........92.4C/W
Electrical Characteristics(5)
VIN = VEN2/3 = VOUT + 1V; highest of the three outputs; CIN = COUT1 = COUT2 = COUT3 = 1F; IOUT1 = IOUT2 = IOUT3 = 100A; TJ = 25C, bold values indicate -40C to +125C, unless noted.
Parameter Output Voltage Accuracy Line Regulation Load Regulation
(6)
Condition Variation from nominal VOUT Variation from nominal VOUT; -40C to +125C VIN = VOUT +1V to 5.5V; IOUT = 100A IOUT = 100A to 150mA IOUT = 50mA; VOUT 2.8V IOUT = 150mA; VOUT 2.8V IOUT = 50mA; VOUT < 2.8V IOUT = 150mA; VOUT < 2.8V IOUT = 0mA; VEN2/3 = 0V , VOUT1 = On IOUT = 0mA; VOUT > 1.3V VEN2/3 = VIN f = up to 1kHz; COUT = 1F; VOUT < 2.5V f = 1kHz - 10kHz; COUT = 1F; VOUT < 2.5V VOUT = 0V COUT = 1F, 10Hz to 100kHz Logic Low Logic High VIL 0.2V VIH 1.2V COUT = 1F; IOUT = 150mA
Min. -2.0 -3.0
Typ.
Max. +2.0 +3.0
Units % % % % mV mV mV mV A A dB dB
0.02 0.65 55 155 60 180 32 96 70 60 200 325 200
0.3 110 310 135 380 40 120
Dropout Voltage(7)
Ground Pin Current (8) Ripple Rejection Current Limit Output Voltage Noise Enable Input Enable Input Voltage (VEN2/3) Enable Input Current (VEN2/3) Turn-on Time (VOUT2, VOUT3)
550
mA VRMS
0.2 1.2 0.01 0.01 50 1 1 125
V V A A 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. 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.
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Typical Characteristics
Power Supply Rejection Ratio (PSRR)
-100 -90 -80 -70 -60 dB -50 -40 -30 -20 -10 0 10 100 1000 10000 100000 FREQUENCY(Hz) VOUT =1.5V COUT =1F IOUT =150mA IOUT =100A
Dropout Voltage vs. Output Current
160 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 0 0 20
200 180 DROPOUT VOLTAG (mV) 160 140 120 100 80 60 40 20 0 -40 -20
Dropout Voltage vs. Temperature
VOUT1=3.3V CIN=COUT1=1F 150mA 100mA
DROPOUT VOLTAGE (mV)
50mA 10mA
VOUT1=3.3V CIN=COUT1=1F 40 60 80 100 120 140 160 OUTPUT CURRENT (mA)
0
20 40 60 80 100 120 TEMPERATURE(C)
Ground Current (VOUT1=3.3V) vs. Supply Voltage
40 150mA
GROUND CURRENT (A) 120
Ground Current (All VOUTs) vs. Supply Voltage
GROUND CURRENT ( A)
Ground Current (VOUT1=3.3V) vs. Temperature
40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 150mA
38 GROUND CURRENT(A) 36 50mA 34 32 30 100A 28 26 2.5 2.8 3.1 3.4 3.7 4 VEN2/3=0V VOUT =3.3V CIN=COUT1=1F Single Output 4.3 4.6 4.9 5.2 5.5
115 110 105 100 95 90 85 80
VIN=VEN2/3=4.3V VOUT1=3.3V
150mA
50mA 100A
50mA
100A
VIN=4.3V VOUT =3.3V CIN=COUT1=1F -40 -20 0 20 40 60 80 100 120 TEMPERATURE(C)
VOUT2=1.8V VOUT3=1.5V CIN=COUT1=COUT2 =COUT3 =1F 2.5 2.8 3.1 3.4 3.7 4 4.3 4.6 4.9 5.2 5.5 SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE(V)
Output Voltage (VOUT1=3.3V) vs. Supply Voltage
3.5 3.4 OUTPUT VOLTAGE (V) 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.5 3 3.5 4 4.5 SUPPLY VOLTAGE (V) 5 5.5 CIN=COUT1=1F VOUT =3.3V 150mA 50mA 100A
Output Voltage (VOUT2=1.8V) vs. Supply Voltage
1.9 OUTPUT VOLTAGE (V)
1.6
Output Voltage (VOUT3=1.5V) vs. Supply Voltage
OUTPUT VOLTAGE (V)
1.85
1mA
1.55 1mA 1.5 150mA 1.45
50mA
1.8 150mA 1.75 50mA VEN2/3 =VIN VOUT =1.8V CIN=COUT2 =1F 1.7 2.5 3 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V)
VEN2/3=VIN VOUT =1.5V CIN=COUT3=1F
1.4 2.5 3 3.5 4 4.5 5 SUPPLY VOLTAGE (V) 5.5
Output voltage (VOUT3=1.2V) vs. Supply Voltage
1.3
3.5 3.4 3.3
Output Voltage (VOUT1=3.3V) vs. Temperature
2 1.8 1.6 1.4 1.2 1
Output Voltage (VOUT2=1.8V) vs. Temperature
1.25 1mA 1.2
150mA 50mA
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)
3.2 3.1 3
1.15
VEN2/3=VIN VOUT =1.2V CIN=COUT3=1F
VIN=4.3V VOUT =3.3V CIN=COUT1 =1F IOUT1=150mA
VIN=VEN2/3=2.8V VOUT =1.8V CIN=COUT2=1F IOUT2 =150mA -40 -20 0 20 40 60 80 100 120
1.1 2.5 3 3.5 4 4.5 5 5.5 SUPPLY VOLTAGE (V)
-40 -20
0 20 40 60 80 TEMPERATURE(C)
100 120
TEMPERATURE(C)
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Typical Characteristics (Continued)
Output Voltage (VOUT3=1.5V) vs. Temperature
1.7
OUTPUT VOLTAGE (V) 1.4
Output Voltage (VOUT=1.2V) vs. Temperature
Current Limit vs. InputVoltage
380
VOUT1=3.3V
OUTPUT VOLTAG (V)
1.6
1.3
CURRENT LIMIT (mA)
360
340
VOUT3=1.5V
1.5 VIN=VEN2/3=2.5V 1.4 VOUT =1.5V CIN=COUT3=1F IOUT3 =150mA 1.3 -40 -20 0 20 40 60 80 100 120 TEMPERATURE(C)
1.2 VIN=VEN2/3=2.5V VOUT =1.2V CIN=COUT3=1F 1 -40 -20 0 20 40 60 80 100 120 TEMPERATURE(C)
320
VOUT2=1.8V
300
1.1
VEN2/3 =VIN CIN=COUT1=COUT2 =COUT3 =1F
280
2
2.5
3 3.5 4 4.5 INPUT VOLTAGE (V)
5
5.5
Output Noise Spectral Density
1
1
Output Noise SpectralDensity
NOISE uV/Hz
VIN=VEN2/3=5V VOUT3 =1.5V 0.01 COUT3=1F IOUT3=100A OUTPUT VOLTAGE NOISE=152Vrms
NOISE uV/Hz
0.1
0.1
VIN =VEN2/3=5V VOUT3=1.5V COUT3=1F IOUT3=150mA OUTPUT VOLTAGE NOISE=125uVrms
0.001 10 100 1,000 10,000 100,000 FREQUENCY (Hz)
0.01 10 100 1,000 10,000 FREQUENCY (Hz) 100,000
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Functional Characteristics
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Block Diagram
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MIC5387 Enable/Shutdown The MIC5387 comes with an active-high enable (EN2/3) pin that allows the regulator to be disabled for outputs 2 and 3. 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. The output OUT1 does not have an enable pin and is always enabled when VIN is above the minimum supply voltage of 2.5V. Thermal Considerations The MIC5387 is designed to provide three outputs up to 150mA each 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 and the output voltages are 1.8V, 2.8V and 2.8V each with an output current = 150mA. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN - VOUT1) I OUT1 + (VIN - VOUT2) I OUT2 + (VIN - VOUT3) I OUT3 + VIN IGND As the MIC5387 is a CMOS device, the ground current is typically <100A over the load range, the power dissipation contributed by the ground current is <1% and may be ignored for this calculation: PD = (3.3V - 1.8V)150mA + (3.3V-2.8V)150mA + (3.3V - 2.8V)150mA PD = 0.375W 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:
Application Information
MIC5387 is a triple-output, low-noise 150mA LDO. The MIC5387 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. Input Capacitor The MIC5387 is a high-performance, high-bandwidth device. An input capacitor of 1F 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. Output Capacitor The MIC5387 requires an output capacitor of 1F or greater for each output 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 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. No-Load Stability Unlike many other voltage regulators, the MIC5387 will remain stable and in regulation with no load. This is especially important in CMOS RAM keep-alive applications.
PD(MAX) =
TJ(MAX) - TA JA
TJ(MAX) = 125C, the maximum junction temperature of the die, and JA thermal resistance = 92.4C/W for the Thin MLF(R) package.
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Micrel, Inc. Substituting PD for PD(max) and solving for the ambient operating temperature will give the maximum operating conditions for the regulator circuit. The maximum power dissipation must not be exceeded for proper operation. For example, when operating the MIC5387-SGFYMT at an input voltage of 3.3V and 450mA load with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.375W = (125C - TA) / (92.4C/W) TA = 90.35C
MIC5387 Therefore, the maximum ambient operating temperature of 90.35C is allowed in a 1.6mm x 1.6mm thin MLF(R) 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
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Typical Application
Bill of Materials
Item C1,C2,C3,C4 U1
Notes: 1. 2. TDK: www.tdk.com Micrel, Inc.: www.micrel.com
Part Number C1005X5R1A105K MIC5387-xxxYMT
Manufacturer TDK
(1)
Description Capacitor, 1F Ceramic, 10V, X5R, Size 0402 Ultra-Small Triple 150mA Output LDO
Qty. 4 1
Micrel, Inc.(2)
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PCB Layout Recommendations (1.6mm x 1.6mm Thin MLF(R))
Top Layer
Bottom Layer
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Package Information
6-Pin 1.6mm x 1.6mm Thin MLF(R) (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. (c) 2010 Micrel, Incorporated.
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