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MIC5304
Single 150mA Low Operating Current LDO with Dual Voltage Pin Select
General Description
Features
The MIC5304 is a low quiescent current, low dropout * 150mA output current regulator with selectable output voltage designed for * Logic controlled selectable output voltage applications that require two levels of output voltage * Fast transition time between selected output voltages regulation. The MIC5304 is an ideal solution for * Input voltage range: 2.3V to 5.5V programming memory cards as well as for conserving * Low 24A operating current power in portable applications. The MIC5304 is capable of sourcing 150mA of output current while only consuming * Stable with 1F ceramic capacitors 24A of operating current. This high performance LDO * Low dropout voltage of 85mV @ 150mA offers fast transient response while still maintaining low * Thermal shutdown and current limit protection quiescent current levels. * Tiny 6-pin 1.6mm x 1.6mm Thin MLF(R) package The MIC5304 is an ideal solution for battery operated applications due to ultra low operating current and extremely low dropout voltage of 85mV at 150mA. Applications Equipped with a TTL logic compatible enable pin, the * Mobile phones, PDAs, PMPs, PNDs MIC5304 can be put into a zero-off mode current state, drawing virtually no current when disabled. * Digital still and video cameras Board space and component cost is minimized because * Dual voltage levels for power saving mode the MIC5304 operates with very small 1F ceramic * Portable electronics capacitors. The MIC5304 provides fixed output voltages, (R) and is available in the tiny 1.6mm x 1.6mm Thin MLF package ideal for portable electronics. MIC5304 also features thermal shutdown and current limit protection. Data sheets and support documentation can be found on Micrel's web site at: www.micrel.com. ___________________________________________________________________________________________________________
Typical Application
MIC5304-RGYMT 1F VIN VOUT 3.2V/1.8V
VEN VSEL GND
1F
Selectable Output Voltage LDO 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
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Micrel, Inc.
MIC5304
Ordering Information
Part Number MIC5304-RGYMT MIC5304-XDYMT MIC5304-XGHYMT
Note: 1. 2. 3. Pin 1 identifier = For other voltage options contact Micrel Marketing for details. MLF is GREEN RoHs compliant package. Lead finish is NiPdAu, Hold compound is Hydrogen Free.
Marking(1) RQZ XQD XGH
Voltage(2) VSEL=High 3.2V 3.15V 3.15V
Voltage 1.8V 1.85V
(2)
VSEL=Low
Temperature Range -40 to +125C -40 to +125C -40 to +125C
Package
(3)
6-Pin 1.6mm x1.6mm Thin MLF(R) 6-Pin 1.6mm x1.6mm Thin MLF(R) 6-Pin 1.6mm x1.6mm Thin MLF(R)
1.875V
Pin Configuration
VIN 1 GND 2 VSEL 3
6 5 4
VOUT NC EN
6-Pin 1.6mm x 1.6mm Thin MLF(R) (MT)
Pin Description
Pin Number 1 2 3 4 5 6 HS Pad Pin Name VIN GND VSEL EN NC VOUT E PAD Pin Function Supply Input. Ground. Voltage Select Input. Logic high = higher output voltage; Logic low = lower output voltage. Do not leave floating. Enable Input: Active High Input. Logic High = On; Logic Low = Off. Do not leave floating. Not internally connected. Output Voltage. Exposed heatsink pad connected to ground internally.
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Absolute Maximum Ratings(1)
Supply Voltage (VIN) ........................................ -0.3V to +6V Enable/Select Voltage (VEN/VSEL)...................... -0.3V to VIN Power Dissipation (PD) ........................... Internally Limited(3) Lead Temperature (soldering, 5sec.)......................... 260C Junction Temperature(TJ) .........................-40C to +125C Storage Temperature (Ts) .........................-65C to +150C ESD Rating(4) .................................................................. 2kV
Operating Ratings(2)
Supply Voltage (VIN)....................................... +2.3V to 5.5V Enable/Select Voltage (VEN/VSEL)........................... 0V to VIN Junction Temperature (TJ) ........................ -40C to +125C Junction Thermal Resistance 1.6mmx1.6mm Thin MLF-6 (JA) .......................92C/W
Electrical Characteristics(5)
VIN = VEN = VOUT + 1V; CIN = COUT = 1F; IOUT = 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 VIN = VOUT +1V to 5.5V, IOUT = 100A IOUT = 100A to 150mA IOUT = 50mA IOUT = 100mA IOUT = 150mA
Min -1.5 -2.0
Typ
Max +1.5 +2.0
Units % % %/V % mV mV
0.01 0.05 25 55 85 24 0.01 65 50 275 475 90
0.3 1
Dropout Voltage(7)
150 35 1
mV A A dB dB
Ground Pin Current(8) Ground Pin Current in Shutdown Ripple Rejection Current Limit Output Voltage Noise Enable/Select Input Enable/Select Input Voltage Enable/Select Input Current Turn-on Time Transition Time
IOUT = 100A to 150mA VEN = 0V f = 1kHz; COUT = 1F; IOUT = 150mA f = 20kHz; COUT = 1F; IOUT = 150mA VOUT = 0V COUT = 1F, 10Hz to 100kHz Logic Low Logic High VIL 0.2V VIH 1.2V COUT = 1F; IOUT = 150mA VEN = High; VSEL = Transition from 0V to 1.2V; VOUT change from 1.8V to (3.2V-10%) VEN = High; VSEL = Transition from 1.2V to 0V; VOUT change from 3.2V to (1.8V+10%) 1.2
750
mA VRMS
0.2 0.01 0.01 150 35 45 1 1 500 100 100
V V A A s s 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 VOUT. For outputs below 2.3V, the dropout voltage is the input-to-output differential with the minimum input voltage 2.3V. 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
-80 -70 -60 -50 -40 -30 -20 -10 0 0.1 VIN = VOUT +1V VOUT = 3.15V COUT = 1F 1 10 100 1K FREQUENCY (kHz) 10K 150mA
Power Supply Rejection Ratio (VSEL=High)
50mA 100mA
-80 -70 -60 -50 -40 -30 -20 -10
Power Supply Rejection Ratio (V SEL=Low)
50mA 150mA 100mA
3.5 3.0 2.5 2.0 1.5 1.0
Output Voltage vs. Input Voltage (VSEL =High)
100A
150mA
0 0.1
VIN = VOUT +1V VOUT = 1.85V COUT = 1F 1 10 100 1K FREQUENCY (kHz) 10K
0.5
VOUT = 3.15V COUT = 1F 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V)
2.0 1.8 1.4 1.2 1.0 0.8 0.6 0.4 0.2
Output Voltage vs. Input Voltage (VSEL =Low)
3.4
Output Voltage vs. Temperature (V SEL=High)
2.0
Output Voltage vs. Temperature (V SEL=Low)
1.6 100A 150mA 3.2
1.9
1.8
3.0 VOUT = 1.85V COUT = 1F
0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 INPUT VOLTAGE (V)
2.8 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
VIN = VOUT + 1V vOUT = 3.15V CIN = COUT = 1F IOUT = 100A
1.7
1.6 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
VIN = VOUT +1V VOUT = 1.85V CIN = COUT = 1F IOUT = 100A
3.4
Output Voltage vs. Output Current (V SEL =High)
2.2
Output Voltage vs. Output Current (V SEL =Low)
30 28 26
Ground Current vs. Input Voltage
3.2
2.0
100A 150mA VIN = VEN VOUT = 3.15V CIN = COUT = 1F 4 4.5 5 INPUT VOLTAGE (V) 5.5
3.0
1.8
24
2.8
2.6 0
VIN = VSEL = VEN = VOUT +1V VOUT = 3.15V CIN = COUT = 1F 25 50 75 100 125 150 OUTPUT CURRENT (mA)
1.6
1.4 0
VIN = VEN = VOUT +1V VSEL = 0V VOUT = 1.85V CIN = COUT = 1F 25 50 75 100 125 150 OUTPUT CURRENT (mA)
22 20 3.5
28
Ground Current vs. Output Current
550
Current Limit vs. Input Voltage (VSEL =High)
550
Current Limit vs. Input Voltage (VSEL=Low)
26
525
525
24
500
500
22
20 0
VEN = VIN = VOUT + 1V VOUT = 3.15V CIN = COUT = 1F 25 50 75 100 125 150 OUTPUT CURRENT (mA)
475 VOUT = 3.15V CIN = COUT = 1F 4 4.5 5 INPUT VOLTAGE (V) 5.5
475 VOUT = 1.85V CIN = COUT = 1F 3 3.5 4 4.5 5 INPUT VOLTAGE (V) 5.5
450 3.5
450 2.5
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Typical Characteristics (continued)
120 100 80 60 40 20 40 VEN = VSEL = 1.2V VOUT = 3.15V CIN = COUT = 1F ILOAD = 150mA 20 0 25 VEN = VSEL = 1.2V VOUT = 3.15V CIN = COUT = 1F 50 75 100 125 150 OUTPUT CURRENT (mA)
Dropout Voltage vs. Temperature (V SEL=High)
100
Dropout Voltage vs. Output Current (V SEL =High)
80 60
0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (C)
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Functional Characteristics
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Functional Characteristics (continued)
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Functional Diagram
VIN EN
LDO
VOUT
REFERENCE
RESISTOR DIVIDER NETWORK
VSEL
GND
MIC5304 Block Diagram
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MIC5304 between two voltages. A logic high signal sets the output to the higher voltage; while a logic low signal selects the lower output voltage. The voltage select pin cannot be left floating; a floating pin may cause an indeterminate state on the output. Thermal Considerations The MIC5304 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 3.6V, the output voltage is 3.15V with VSEL set high and 1.85V with VSEL low, and the output current = 150mA. The lower output voltage should be used for power dissipation calculations as this is the worst case situation. The actual power dissipation of the regulator circuit can be determined using the equation: PD = (VIN - VOUT) IOUT + 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 -1.85V) x 150mA PD = 0.2625W 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) = JA
Application Information
The MIC5304 is a low quiescent current voltage selectable LDO. The regulator is capable of sourcing 150mA of output current with a low quiescent current of 24A. A logic input signal selects the output between two preset voltages. The MIC5304 regulator is fully protected from damage due to fault conditions, offering linear current limiting and thermal shutdown. Input Capacitor The MIC5304 is a high-performance, high bandwidth device. Therefore, it requires a well bypassed input supply for optimal performance. 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 MIC5304 requires an output capacitor of 1F or greater to maintain stability. The design is optimized for use with lowESR 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. Enable/Shutdown The MIC5304 is provided with an active-high enable pin that allows the regulator to be enabled. Forcing the enable pin low disables the regulator and sends it into a "zero" offmode-current state. In this state, current consumed by the regulator goes nearly to zero. 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. Voltage Select The voltage select pin is used to select the output voltage November 2008 9
TJ(max) = 125C, and the maximum junction temperature of the die, JA, thermal resistance = 92C/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 92C/W. The maximum power dissipation must not be exceeded for proper operation. For example, when operating the MIC5304-XDYMT at an input voltage of 3.6V and 150mA load with a minimum footprint layout, the maximum ambient operating temperature TA can be determined as follows: 0.2625W = (125C - TA)/(92C/W) TA = 100C Therefore, a 3.15/1.85V application with a 150mA output current can accept an ambient operating temperature of 100C in a 1.6mm x 1.6mm 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
M9999-111908-A
Micrel, Inc.
MIC5304
J1 VIN
VIN
1
U1 MIC5304-xxYMT
VOUT
6
IN
VOUT
J4 VOUT
C2 1F/6.3V
C1 1F/6.3V
2
J2 GND
GND
NC
5
J5 GND
J3 VSEL
3
VSEL
EN
4
J6 EN
Bill of Materials
Item C1, C2 U1
Notes: 1. TDK : www.tdk.com 2. Micrel, Inc.: www.micrel.com
Part Number C1608X5R1A105K MIC5304-xxYMT
Manufacturer TDK(1) Micrel, Inc.
(2)
Description Capacitor, 1F, 6.3V, X5R, Size 0603 150mA LDO with Selectable Output Voltage
Qty. 2 1
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PCB Layout Recommendations
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) 2008 Micrel, Incorporated.
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