MIC5159 Programmable Current Limit µCap LDO Regulator Controller General Description Features Micrel’s MIC5159 is a precision-voltage regulator controller. Used with an external P-Channel MOSFET, the MIC5159 forms a two-chip low-dropout regulator capable of driving a wide range of output currents. The MIC5159 operates from an input of 1.65V to 5.5V. The low input voltage allows the MIC5159 to operate off of high power 1.8V rails to generate lower voltages such as 1.5V. Features of the MIC5159 include enable input and currentlimit protection. As a µCap design, the MIC5159 is stable with ceramic output capacitors. The MIC5159 is packaged in the IttyBitty® SOT-23-6, and is offered in fixed and adjustable output voltages. Junction temperature range of the MIC5159 is from –40°C to +125°C. • • • • • • • • • • • • • Fast transient response Input voltage range: VIN 1.65V to 5.5V ±1.0% initial output tolerance Fixed 1.8V or adjustable output voltage down to 1.25V Stable with ceramic output capacitor Capable up to 10A Excellent line and load regulation specifications Logic-controlled shutdown Programmable current limit Current-limit protection IttyBitty® SOT-23-6 package Available temperature range:–40°C to +125°C Applications • • • • • • • Ultra-high current, ultra-low dropout voltage regulator High-efficiency linear power supplies Low-voltage distributed power Fixed telecom Multimedia and PC power supplies Battery chargers Low-voltage DSP, microprocessor and microcontroller power supplies Typical Application Q1–Q4 SUB15P01–52 × 4 V IN VOUT U1 MIC5159BM6/YM6 5 C1 1 3 EN GATE IN IS FB GND GND R1 C1 10A C1 100mA R2 GND VIN = 3.3V VOUT = 2.5V COUT = 200µF Adjustable Output Voltage IttyBitty is a registered trademark of Micrel, 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 2006 M9999-062706 Micrel, Inc. MIC5159 Ordering Information Marking Voltage* Junction Temp. Range Package MIC5159YM6 LZAA Adj. –40° to +125°C SOT-23-6 MIC5159-1.8BM6 MIC5159-1.8YM6 LZ18 1.8V. –40° to +125°C SOT-23-6 MIC5159-3.0BM6 MIC5159-3.0YM6 LZ30 3.0V –40° to +125°C SOT-23-6 Part Number Standard Pb-Free MIC5159BM6 Note: Other Voltage available. Contact Micrel for details. Pin Configuration ADJ EN GATE 6 Pin 1 Index 5 OUT EN GATE 4 6 Pin 1 Index LZAA 1 2 3 4 LZxx 1 IN GND IS 5 2 3 IN GND IS SOT-23-6 (M6) Adjustable Voltage Version SOT-23-6 (M6) Fixed Voltage Version Pin Description Pin Number Pin Name Pin Function 1 IN Input Voltage. 2 GND 3 IS 4 GATE 5 6 June 2006 Ground. Current Sense: IS must be tied to VIN pin if the current limit feature is not used. Gate drive of the external P-Channel MOSFET. EN Enable Input: Logic Level ON/OFF control. Logic high = ON; logic low = OFF. ADJ Adjustable Regulator Feedback Input: Connect to resistor voltage divider. OUT Output Voltage: Connect to drain of P-Channel MOSFET to regulate output to proper voltage. 2 M9999-062706 Micrel, Inc. MIC5159 Absolute Maximum Ratings(1) Operating Ratings(2) Supply Voltage (VIN) ....................................................+6.0V Enable Input Voltage (VEN)..........................................+6.0V Power Dissipation (PD(max)) ........................................ Note 3 Storage Temperature (Ts) .........................–65°C to +150°C Lead Temperature (soldering, 5 sec.)........................ 260°C EDS Rating(4) .................................................................. 2kV Supply voltage (VIN) ................................... +1.65V to +5.5V Enable Input Voltage (VEN)................................ 0V to +5.5V Junction Temperature (TJ) ..................–40°C ≤ TJ ≤ +125°C Package Thermal Resistance SOT-23-6 (θJA).................................................235°C/W Electrical Characteristics(5) TA = 25°C with VIN = VOUT + 1V; VEN = 1.2V, CIN = COUT = 10µF, ceramic, IOUT = 10mA; bold values indicate –40°C < TJ < +125°C; unless otherwise specified, Note 3 Parameter Condition Max Units Output Voltage Accuracy At 25°C –1 +1 % Over temperature range –2 +2 % Output Voltage Line Regulation VIN = VOUT + 1.0V to 5.5V –0.1 0.007 +0.1 %/V Output Voltage Load Regulation IL = 10mA to 1.0A 0.2 1.0 % VEN ≤ 0.2V (MIC5159 OFF) 15 30 µA VEN ≥ 1.2V (MIC5159 ON) 10 20 mA 1 µA Ground Pin Current (6) Min Typ Adjust Pin Bias Current Maximum VGS (PFET fully ON); VIN = 5.0V 4.5 V (PFET fully ON); VIN = 3.3V 3.1 V (PFET fully ON); VIN = 2.5V 2.3 Current-Limit Threshold VIN – VIS 40 Start-up Time VEN = VIN V 50 65 mV 30 150 µs 0.2 V 250 mV 1 µA Enable Input Enable Input Threshold Regulator enabled V 1.2 Regulator shutdown Enable hysteresis Enable Pin Input Current 20 Independent of state 50 0.01 nA Notes: 1. Exceeding the absolute maximum rating may damage the device. 2. The device is not guaranteed to function outside its operating rating. 3. PD(max) = (TJ(max) – TA) ÷ θJA, where θJA depends upon the printed circuit layout, see “Applications Information.” 4. Devices are ESD sensitive. Handling precautions recommended. Human body model, 1.5k in series with 100pF. 5. Specification for packaged product only. 6. IGND is the quiescent current. IIN = IGND + IOUT. June 2006 3 M9999-062706 Micrel, Inc. MIC5159 Typical Characteristics Current Limit Threshold vs. Input Voltage 58 56 54 52 50 48 46 5.65 EN off 300 200 June 2006 5.65 INPUT VOLTAGE (V) 5.15 4.65 4.15 3.65 3.15 1.65 0 2.15 100 OUTPUT VOLTAGE (V) 1.230 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 LOAD (A) QUIESCENT CURRENT (mA) Current Limit Threshold vs. Temperature 58 56 54 52 50 48 46 44 42 40 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) SHUTDOWN CURRENT (µA) 500 400 1 VIN = 3.3V 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) 20 EN on 600 2 60 Enable Threshold vs. Input Voltage 700 4 3 Quiescent Current vs. Load 9 8 7 6 5 4 3 2 1 VIN = 2.5V 0 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 LOAD (A) 800 Enable Threshold vs. Temperature 700 600 500 EN on 400 300 200 EN off 100 0 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) Shutdown Current vs. Input Voltage -40°C 18 16 25°C 14 12 85°C 10 8 6 4 2 0 1.65 INPUT VOLTAGE (V) 5.15 4.65 4.15 3.65 3.15 1.65 42 40 2.65 44 CURRENT LIMIT THRESHOLD (mV) 5.65 INPUT VOLTAGE (V) 5.15 4.65 4.15 3.65 3.15 2.65 2.15 1.65 60 ILOAD = 10mA 1.232 1.231 INPUT VOLTAGE (V) 4 5.65 2 5 5.15 4 3 1.234 1.233 ENABLE THRESHOLD (mV) QUIESCENT CURRENT (mA) 5 7 6 VIN = 2.5V 1.236 1.235 10 9 8 Output Voltage vs. Load 1.238 1.237 Quiescent Current vs. Temperature 4.65 5.65 5.15 4.65 4.15 3.65 3.15 7 6 1 0 1.231 1.230 -40 -20 0 20 40 60 80 100 120 TEMPERATURE (°C) 10 9 8 2.15 QUIESCENT CURRENT (mA) CURRENT LIMIT THRESHOLD (mV) INPUT VOLTAGE (V) 1.232 Quiescent Current vs. Input Voltage 10 ENABLE THRESHOLD (mV) 2.65 1.65 1.220 2.15 1.225 1.234 1.233 4.15 1.230 1.235 3.65 1.235 1.237 1.236 3.15 1.240 1.240 1.239 VIN = 3.3V 1.239 1.238 2.65 REFERENCE VOLTAGE (V) 1.240 1.245 2.65 REFERENCE VOLTAGE (V) 1.250 Reference Voltage vs. Temperature 2.15 Reference Voltage vs. Input Voltage M9999-062706 Micrel, Inc. MIC5159 Functional Characteristics 2A 10mA VIN = 1.8V VOUT = 1.5V COUT = 100µF June 2006 VIN = 3.3V VOUT = 1.8V 5 M9999-062706 Micrel, Inc. MIC5159 Functional Diagram VIN RS VOUT IS GATE Buffer I SNS Amplifier IN VOUT S VREF VREF Enable EN GND Block Diagram – Fixed Output Voltages VIN RS VOUT IS GATE R1 Buffer ADJ. ISNS Amplifier IN EN S R2 VREF VREF Enable Block Diagram – Adjustable Output Voltages June 2006 6 M9999-062706 Micrel, Inc. MIC5159 ⎛ (2.5V − 1.8 V ) ⎞ R DS(ON) = ⎜ ⎟ − 10mΩ 5A ⎠ ⎝ Application Information The MIC5159 is a high performance voltage regulator controller. When used with an external P-Channel MOSFET and a tiny ceramic output capacitor, it forms a wide variety of simple, inexpensive ultra-low-dropout voltage regulators. RDS(ON) = 130mΩ According to the above calculation, the minimum RDS(ON) is 130mΩ for a 2.5V to 1.8V LDO with 5A of output current. For this design, the R DS(ON) for the FETs should maintain better than 130mΩ over the required temperature, current, and voltage conditions. Placing two or more P-Channel FETs in parallel can reduce the total R DS(ON) of the regulator. This also aids thermal dissipation by sharing the current and heat between the multiple FETs. Current Sense Resistor Selection A current sense resistor placed between the input and the current sense pin (IS) allows for programmability of the current limit. This resistor can simply be calculated by: ⎛ 50mV ⎞ ⎟ R SENSE = ⎜⎜ ⎟ ⎝ I OUT ⎠ Thermal Considerations Linear regulators are simple to use. The most complicated design parameters to consider are thermal characteristics. Since the MIC5159 offers no thermal protection, thermal design requires the following application-specific parameters: Where IOUT is the maximum output current. For example, the current sense resistor for a 2.5VIN to 1.8VOUT, 5A, linear regulator calculates as follows: ⎛ 50mV ⎞ R SENSE = ⎜ ⎟ ⎝ 5A ⎠ RSENSE = 10mΩ P-Channel MOSFET Selection The P-Channel MOSFET selected for use with the MIC5159 must satisfy the following requirements: • Input voltage • Gate threshold • Load current • Dropout voltage (input-to-output differential) ( ) ⎞⎟ ⎟ ⎠ • Output current (IOUT) • Output voltage (VOUT) ( ⎛ TJ(MAX) − TA θ JA = ⎜⎜ PD ⎝ ) ⎞⎟ ⎟ ⎠ Where TJ(max) is equal to the maximum die temperature of the P-Channel. θJA = θJC + θCS + θSA Example For the same regulator, 2.5VIN to 1.8VOUT at 5A with an ambient temperature of 60°C: PD = (2.5V–1.8V) × 5A PD = 3.5W Where VIN is the maximum VIN and IOUT is the maximum IOUT. The P-Channel MOSFET must be able to dissipate 3.5W. The minimum θJA to maintain a maximum TJ of 150°C (max.) TJ according to a typical MOSFET data sheet is as follows: − R SENSE Where IOUT(max) is the maximum output current and RSENSE is the current sense resistor. For example, the MIC5159-1.8BM6 is used with an external MOSFET to form a 5A LDO with an input of 2.5V. Either a 2.5V or 1.8V gate threshold MOSFET can be selected. The minimum RDS(ON) is calculated as: June 2006 Maximum ambient temperature (TA) • Input voltage (VIN) First, calculate the maximum power dissipation of the regulator: PD = (VIN – VOUT) × IOUT Ground current can generally be ignored. The amount of power dissipated by ground current and input voltage is minimal. Minimum θJA for the MOSFET can be calculated using the following formula: • Thermal performance To prevent damage to the P-Channel MOSFET, the maximum input voltage (VIN(max)) must be less than its drain-source breakdown voltage (BVDS). In addition, the minimum input voltage (VIN(min)) must be greater than or equal to the gate threshold voltage (VGS) of the PChannel MOSFET. For a given output current and dropout requirement, the ON-resistance (RDS(ON)) of the P-Channel MOSFET must also be determined. The minimum RDS(ON) of the P-Channel MOSFET is calculated as follows: ⎛ VIN(MIN) − VOUT R DS(ON) = ⎜ ⎜ IOUT(MAX) ⎝ • θ JA = 7 (150°C − 60°C) 3.5W M9999-062706 Micrel, Inc. MIC5159 2.0 Q1,2,3 Si4433DYx3 MIC5159-1.8BM6/YM6 ISENSE VIN GATE POWER DISSIPATION (W) 4.5 4 3.5 3 2.5 2 1.5 1.60 1.40 1.20 1.00 0.80 0.60 0.40 0.20 Constant Current Limiting Re-Entrant Current Limiting 1 0.5 0 0 0.5 1 OUTPUT VOLTAGE (V) 1.5 Figure 3. Power Dissipation vs. Output Voltage Enable/Shutdown The MIC5159 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 low offmode-current state. Forcing the enable pin high enables the output voltage. This part is CMOS and the enable pin cannot be left floating; a floating enable pin may cause an indeterminate state on the output. Output Capacitor The MIC5159 requires an output capacitor to maintain stability and improve transient response. Proper selection is important to ensure proper operation. The MIC5159 output capacitor selection is highly dependent upon the components and the application. With a very high gate charge (gate capacitance) MOSFET, the output requires a much larger valued ceramic capacitor for stability. As an alternative to a large valued ceramic capacitor, a smaller-valued tantalum capacitor can be used to provide stability. At higher load currents, lower RDS(ON) MOSFETs are used; these MOSFETs typically having much larger gate charge. If the application does not require ultra-low-dropout voltage, smaller values of ceramic capacitance may be used. 1.8 VOUT 1.5A C2 47µF ADJ Figure 1. Re-Entrant Current Limit June 2006 0.6 0.4 0.2 Re-Entrant Current Limit 0 5 RSENSE C1 10µF 1.0 0.8 Figure 2. Output Voltage Characteristics Re-Entrant Current Limit RVOUT RVIN 1.4 1.2 OUTPUT CURRENT (A) Short-Circuit Current Limit The above thermal design calculations apply to normal operation. In the case where the P-Channel MOSFET must survive extended periods of short-circuit current, another approach for thermal design must be considered. Due to the fact that the MIC5159 delivers constant current limiting, power dissipated by the MOSFET is equal to the input voltage multiplied by the maximum output current. Figure 1 shows a simple, inexpensive circuit that allows the current limiting to be re-entrant. This reduces power dissipation in current limited conditions. As the output voltage begins to drop, the differential voltage across the input and output increases. This pulls the current sense voltage lower, reducing the amount of output current to maintain 50mV across the sense resistor. This reduction in output current equates to a reduction in power dissipation in the MOSFET. Figures 2 and 3 show a comparison of linear current limiting versus the reentrant current limiting scheme implemented in Figure 1. 3.3 VIN Constant Current Limit 1.8 1.6 0.00 OUTPUT VOLTAGE (V) θJA = 25.71°C/W The heatsink and MOSFET must have a combined thermal resistance to meet the above criteria. The typical thermal resistance from the junction to the case (θJC) of a TO-263 (D2 pack) is 6°C/W. Adding 0.2°C/W for case to sink thermal resistance (θCS), the heatsink must have a sink to ambient thermal resistance (θSA) of: θSA = θJA– (θJC + θCS) θSA = 25.71°C/W – (6°C/W + 0.2°C/W) θSA = 19.51°C/W According to the calculations, the heatsink must have a θSA of 19.51°C/W or better. 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. 8 M9999-062706 Micrel, Inc. MIC5159 Input Capacitor An input capacitor of 1.0µF or greater is recommended when the device is more than 4 inches away from the bulk AC supply capacitance or when the supply is a battery. Small, surface mount, ceramic capacitors can be used for bypassing the input to the regulator, further improving the integrity of the output voltage. Larger input capacitors may be required depending on the impedance of the source and the output load requirements. Adjustable Regulator Design The MIC5159 allows programming the output voltage anywhere between 1.235V to VIN. Two resistors are used. See Figure 4. The resistor values are calculated by: ⎛⎛ V ⎞ ⎞ R1 = R2 × ⎜⎜ ⎜⎜ OUT ⎟⎟ − 1⎟⎟ ⎝ ⎝ 1.235 ⎠ ⎠ Where VOUT is the desired output voltage. Layout Considerations Input and output capacitor placement should be as close as possible to the input and output, respectively. Trace resistance between the current sense and the MOSFET source should be minimized. Trace resistance will increase dropout voltage. This is more of a factor at higher output currents. Also, a minimum amount of distance between the gate pin, on the MIC5159, and the P-Channel MOSFET gate is recommended. A long trace can create a small parasitic inductor. This, coupled to the gate capacitance of the MOSFET, can create a high frequency tank circuit. A small 50Ω resistor in series with the gate may be required to eliminate high-frequency noise. June 2006 VIN RS VOUT Si3445 MIC5159-x.x IS GATE IN ADJ EN GND R1 COUT = 10µF ceramic R2 Figure 4. Adjustable Regulator Design 9 M9999-062706 Micrel, Inc. MIC5159 Designing with MIC5159 3.3VIN to 1.25VOUT Conversion The following section details: IOUT 0.4A 0.75A 0.75A 1.25A 1.75A 1.75A 2.75A 3.75A • Application examples of possible input/output configurations with related schematics designator. • Schematics with “Bill of Materials” recommendation, dropout performance and maximum output current for each FET combination. • Further advice on MOSFET selection. COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK IOUT 1.25A 2.5A 2.5A 4.0A 5.5A 5.5A 8.0A 11.0A Schematic C D H E F I J K COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK IOUT 1.0A 2.0A 2.0A 3.0A 4.0A 4.0A 6.0A 8.0A Schematic C D H E F I J K COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF June 2006 MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Schematic C D H E F I J K COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic C D H E F I J K 2.5VIN to 1.25VOUT Conversion 3.3VIN to 1.5VOUT Conversion IOUT 0.5A 1.0A 1.0A 1.5A 2.0A 2.0A 3.0A 4.25A Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK 2.5VIN to 1.5VOUT Conversion 3.3VIN to 1.8VOUT Conversion IOUT 0.6A 1.25A 1.25A 2.0A 2.5A 2.5A 3.75A 5.0A MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 2.5VIN to 1.8VOUT Conversion 3.3VIN to 2.5VOUT Conversion IOUT 1.0A 2.5A 2.5A 3.5A 5.0A 5.0A 7.5A 10.0A COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF Package SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK IOUT 0.75A 1.5A 1.5A 2.0A 3.0A 3.0A 4.5A 6.0A Schematic C D H E F I J K 10 COUT 10µF 22µF 10µF 44µF 44µF 22µF 44µF 44µF MOSFET Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 M9999-062706 Micrel, Inc. MIC5159 1.8VIN to 1.5VOUT Conversion IOUT 2.0A 4.0A 6.0A (1) 7.0A COUT 10µF 22µF 200µF 44µF MOSFET Si3445DV Si3445DV x2 Si4403DY x2 SUB15P01-52 x4 1.8VIN to 1.25VOUT Conversion Package TSOP-6 TSOP-6 SO-8 D2PAK Schematic A B G K IOUT 1.0A 1.5A 3.0A 3.0A 4.5A 6.0A 6.5A 9.0A 13.0A Note: 1. For space constrained designs, a DPAK equivalent can be used in this application (SUD15P01-52). This is due to RDS(ON) limitation NOT power dissipation. June 2006 11 COUT 10µF 10µF 22µF 10µF 44µF 44µF 22µF 88µF 88µF MOSFET Si3445DV Si4433DY Si4433DY x2 SUB15P01-52 Si4433DY x3 Si4433DY x4 SUB15P01-52 x2 SUB15P01-52 x3 SUB15P01-52 x4 Package TSOP-6 SO-8 SO-8 D2PAK SO-8 SO-8 D2PAK D2PAK D2PAK Schematic A C D H E F I J K M9999-062706 Micrel, Inc. MIC5159 Schematic A Input/Output Combination Examples Output 1.5V 1.25V Maximum Current 2A 1A INPUT–OUTPUT VOLTAGE (V) Input 1.8V 1.8V U1 MIC5159BM6/YM6 6 5 4 Max. Power Dissipation at 60°C TA 3 2 1 0 0 Application Circuit Dropout 0.5 1 1.5 2 2.5 OUTPUT CURRENT (A) 3 Si3445DV SOA Bill of Materials Item Part Number Manufacturer C1 GRM40 X7R 106 6.3 Murata C2 C2012X5RR0J106M Murata R1 CRCW08051002 R2 CRCW08059761 CRCW08052152 (1) Description Qty. 10µF, 6.3V Ceramic MLCC, Size 0805 1 10µF, 6.3V Ceramic MLCC, Size 0805 1 Vishay Dale(2) 10kΩ Resistor, Size 0805 1 Vishay Dale Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805(3) 1 Vishay Dale Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805 (3) 1 (3) 1 CRCW08054642 Vishay Dale Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805 CRCW08058253 Vishay Dale Output Voltage:1.25V; 825kΩ Resistor, Size 0805(3) 1 R3 CRCW080549R9 F Vishay Dale 49.9Ω Resistor, Size 0805 1 Q1 Si3445DV Vishay Siliconix(4) P-Channel MOSFET TSOP-6 1 Programmable Current Limit µCap LDO Regulator 1 U1 MIC5159BM6/YM6 (5) Micrel, Inc. Notes: 1. Murata Tel: 949-916-4000 2. Vishay Dale Tel: 402-563-6866 3. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 4. Vishay Siliconix Tel: 402-563-6866 5. Micrel, Inc. Tel: 408-944-0800 June 2006 12 M9999-062706 Micrel, Inc. MIC5159 Schematic B Input/Output Combination Examples Output 1.5V Maximum Current 4A INPUT–OUTPUT VOLTAGE (V) Input 1.8V U1 MIC5159BM6/YM6 6 5 4 Max. Power Dissipation at 60°C TA 3 2 1 0 0 Application Circuit Dropout 1 2 3 4 5 OUTPUT CURRENT (A) 6 Si3445DV x2 SOA Bill of Materials Item Part Number Manufacturer Description C1 GRM40 X7R 106 6.3 Murata(1) 10µF, 6.3V Ceramic MLCC, Size 0805 (2) C2012X5RR0J106M TDK C2 GRM42-2 X5R 226K 6.3 Murata 22µF, 6.3V Ceramic MLCC, Size 1210 C2012X5RR0J106M TDK 22µF, 10V Ceramic MLCC, Size 1210 R1 CRCW08051002 Vishay Dale(3) 10kΩ Resistor, Size 0805 R2 CRCW08059761 Vishay Dale Qty. 1 10µF, 6.3V Ceramic MLCC, Size 0805 1 1 Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805 (4) 1 (4) 1 1 CRCW08052152 Vishay Dale Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805 CRCW08054642 Vishay Dale Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) (4) 1 CRCW08058253 Vishay Dale Output Voltage:1.25V; 825kΩ Resistor, Size 0805 R3 CRCW080549R9 F Vishay Dale 49.9Ω Resistor, Size 0805 Q1, Q2 Si3445DV Vishay Siliconix(5) P-Channel MOSFET TSOP-6 2 U1 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator 1 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 13 M9999-062706 Micrel, Inc. MIC5159 Schematic C Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 1A 0.6A 0.5A 0.4A 1.25A 1A 0.75A 1.5A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 Max. Power Dissipation at 60°C TA 4 3 2 Dropout 1 0 0 0.5 1 1.5 OUTPUT CURRENT (A) 2 Si34433DY SOA Bill of Materials Item Part Number Manufacturer Description C1 GRM40 X7R 106 6.3 Murata(1) 10µF, 6.3V Ceramic MLCC, Size 0805 1 10µF, 6.3V Ceramic MLCC, Size 0805 1 10kΩ Resistor, Size 0805 1 C2 C2012X5RR0J106M TDK (2) (3) Qty. R1 CRCW08051002 Vishay Dale R2 CRCW08059761 Vishay Dale Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805(4) 1 CRCW08052152 Vishay Dale Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805 (4) 1 CRCW08054642 Vishay Dale Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) 1 (4) 1 CRCW08058253 Vishay Dale Output Voltage:1.25V; 825kΩ Resistor, Size 0805 R3 CRCW080549R9 F Vishay Dale 49.9Ω Resistor, Size 0805 Q1 Si4433DY Vishay Siliconix(5) P-Channel MOSFET SO-8 1 U1 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator 1 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 14 M9999-062706 Micrel, Inc. MIC5159 Schematic D Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.5V 1.25V Maximum Current 2.5A 1.25A 1A 0.75A 2.5A 2A 1.5A 2A 3A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 4 Max. Power Dissipation at 60°C TA 3 2 Dropout 1 0 0 1 2 3 OUTPUT CURRENT (A) 4 Si34433DY x2 SOA Bill of Materials Item C1 C2 R1 R2 R3 Q1, Q2 U1 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY MIC5159BM6/YM6 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Micrel, Inc.(6) Description 10µF, 6.3V Ceramic MLCC, Size 0805 10µF, 6.3V Ceramic MLCC, Size 0805 22µF, 6.3V Ceramic MLCC, Size 1210 22µF, 10V Ceramic MLCC, Size 1210 10kΩ Resistor, Size 0805 Output Voltage:2.3V; 9.76kΩ Resistor, Size 0805(4) Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805(4) Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 49.9Ω Resistor, Size 0805 P-Channel MOSFET SO-8 Programmable Current Limit µCap LDO Regulator Qty. 1 1 1 1 1 1 1 1 2 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 15 M9999-062706 Micrel, Inc. MIC5159 Schematic E Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 3.5A 2A 1.5A 1.25A 4A 3A 2A 4.5A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 4 Max. Power Dissipation at 60°C TA 3 2 Dropout 1 0 0 1 2 3 4 5 OUTPUT CURRENT (A) 6 Si34433DY x3 SOA Bill of Materials Item C1 C2 R1 R2 R3 Q1,Q2, Q3 U1 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Description 10µF, 6.3V Ceramic MLCC, Size 0805 10µF, 6.3V Ceramic MLCC, Size 0805 22µF, 6.3V Ceramic MLCC, Size 1210 22µF, 10V Ceramic MLCC, Size 1210 10kΩ Resistor, Size 0805 Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805(4) Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805(4) Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 49.9Ω Resistor, Size 0805 P-Channel MOSFET SO-8 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator Qty. 1 1 1 1 1 1 1 1 3 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 16 M9999-062706 Micrel, Inc. MIC5159 Schematic F Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 5A 2.5A 2A 1.75A 5.5A 4A 3A 6.5A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 4 Max. Power Dissipation at 60°C TA 3 2 Dropout 1 0 0 2 4 6 OUTPUT CURRENT (A) 8 Si34433DY x4 SOA Bill of Materials Item C1 C2 R1 R2 R3 Q1,Q2, Q3,Q4 U1 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F Si4433DY Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Description 10µF, 6.3V Ceramic MLCC, Size 0805 10µF, 6.3V Ceramic MLCC, Size 0805 22µF, 6.3V Ceramic MLCC, Size 1210 22µF, 10V Ceramic MLCC, Size 1210 10kΩ Resistor, Size 0805 Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805(4) Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805(4) Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 49.9Ω Resistor, Size 0805 P-Channel MOSFET SO-8 Qty. 1 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator 1 1 1 1 1 1 1 1 4 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 17 M9999-062706 Micrel, Inc. MIC5159 Schematic G Input/Output Combination Examples Output 1.5V Maximum Current 6A INPUT–OUTPUT VOLTAGE (V) Input 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 4 Max. Power Dissipation at 60°C TA 3 2 Dropout 1 0 0 1 2 3 4 5 6 7 8 9 10 OUTPUT CURRENT (A) Si34403DY x2 SOA Bill of Materials Item Part Number Manufacturer Description C1 GRM40 X7R 106 6.3 Murata(1) 10µF, 6.3V Ceramic MLCC, Size 0805 C2,C3 (2) C2012X5RR0J106M TDK GRM43 ER60J476K Murata 1 10µF, 6.3V Ceramic MLCC, Size 0805 47µF, 6.3V Ceramic MLCC, Size 1812 C4,C5,C6 C4532X5R0J476M TDK 47µF, 6.3V Ceramic MLCC, Size 1812 R1 CRCW08051002 Vishay Dale(3) 10kΩ Resistor, Size 0805 R2 Qty. 1 1 (4) 1 CRCW08059761 Vishay Dale Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805 CRCW08052152 Vishay Dale Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805(4) 1 Vishay Dale (4) 1 CRCW08054642 Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805 (4) 1 CRCW08058253 Vishay Dale Output Voltage:1.25V; 825kΩ Resistor, Size 0805 R3 CRCW080549R9 F Vishay Dale 49.9Ω Resistor, Size 0805 Q1,Q2 Si4403DY Vishay Siliconix(5) P-Channel MOSFET SO-8 2 U1 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator 1 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 18 M9999-062706 Micrel, Inc. MIC5159 Schematic H Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 2.5A 1.25A 1A 0.75A 2.5A 2A 1.5A 3A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 Max. Power Dissipation at 60°C TA 4 3 2 Dropout 1 0 0 0.5 1 1.5 2 2.5 3 3.5 4 OUTPUT CURRENT (A) SUB15P01-52 SOA Bill of Materials Item Part Number Manufacturer Description C1 GRM40 X7R 106 6.3 Murata(1) 10µF, 6.3V Ceramic MLCC, Size 0805 1 10µF, 6.3V Ceramic MLCC, Size 0805 1 (2) C2 C2012X5RR0J106M TDK R1 CRCW08051002 Vishay Dale(3) R2 CRCW08059761 Vishay Dale Qty. 10kΩ Resistor, Size 0805 1 Output Voltage:2.5V; 9.76KΩ Resistor, Size 0805 (4) (4) 1 1 1 CRCW08052152 Vishay Dale Output Voltage:1.8V; 21.5KΩ Resistor, Size 0805 CRCW08054642 Vishay Dale Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) CRCW08058253 Vishay Dale Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 1 R3 CRCW080549R9 F Vishay Dale 49.9Ω Resistor, Size 0805 1 Q1 SUB15P01-52 Vishay Siliconix(5) P-Channel MOSFET TO-263 1 U1 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 19 M9999-062706 Micrel, Inc. MIC5159 Schematic I Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 5A 2.5A 2A 1.75A 5.5A 4A 3A 6.5A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 Max. Power Dissipation at 60°C TA 4 3 2 Dropout 1 0 0 1 2 3 4 5 6 7 OUTPUT CURRENT (A) 8 SUB15P01-52 x2 SOA Bill of Materials Item C1 Part Number Manufacturer (1) Description Qty. GRM40 X7R 106 6.3 Murata C2012X5RR0J106M TDK(2) GRM42-2 X5R 226K 6.3 Murata 22µF, 6.3V Ceramic MLCC, Size 1210 C3225X5R1A226M TDK 22µF, 10V Ceramic MLCC, Size 1210 R1 CRCW08051002 Vishay Dale(3) 10kΩ Resistor, Size 0805 R2 CRCW08059761 Vishay Dale Output Voltage:2.5V; 9.76KΩ Resistor, Size 0805(4) CRCW08052152 Vishay Dale Output Voltage:1.8V; 21.5KΩ Resistor, Size 0805 (4) 1 CRCW08054642 Vishay Dale Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) 1 CRCW08058253 Vishay Dale Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 1 R3 CRCW080549R9 F Vishay Dale 49.9Ω Resistor, Size 0805 1 Q1,Q2 SUB15P01-52 Vishay Siliconix(5) P-Channel MOSFET TO-263 2 U1 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator 1 C2 10µF, 6.3V Ceramic MLCC, Size 0805 1 10µF, 6.3V Ceramic MLCC, Size 0805 1 1 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 20 M9999-062706 Micrel, Inc. MIC5159 Schematic J Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.25V Maximum Current 7.5A 3.75A 3A 2.75A 8A 6A 4.5A 9.5A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 4 Max. Power Dissipation at 60°C TA 3 2 Dropout 1 0 0 2 4 6 8 10 OUTPUT CURRENT (A) 12 SUB15P01-52 x3 SOA Bill of Materials Item C1 C2, C3 R1 R2 R3 Q1,Q2 Q3 U1 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F SUB15P01-52 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Description 10µF, 6.3V Ceramic MLCC, Size 0805 10µF, 6.3V Ceramic MLCC, Size 0805 22µF, 6.3V Ceramic MLCC, Size 1210 22µF, 10V Ceramic MLCC, Size 1210 10kΩ Resistor, Size 0805 Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805(4) Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805(4) Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 49.9Ω Resistor, Size 0805 P-Channel MOSFET TO-263 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator Qty. 1 1 1 1 1 1 1 1 3 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ 1.235 ⎝ ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 21 M9999-062706 Micrel, Inc. MIC5159 Schematic K Input/Output Combination Examples Output 2.5V 1.8V 1.5V 1.25V 1.8V 1.5V 1.25V 1.5V 1.25V Maximum Current 10A 5A 4.25A 3.75A 11A 8A 6A 7A 13A INPUT–OUTPUT VOLTAGE (V) Input 3.3V 3.3V 3.3V 3.3V 2.5V 2.5V 2.5V 1.8V 1.8V U1 MIC5159BM6/YM6 Application Circuit 6 5 4 Max. Power Dissipation at 60°C TA 3 2 Dropout 1 0 0 2.5 5 7.5 10 12.5 15 OUTPUT CURRENT (A) SUB15P01-52 x4 SOA Bill of Materials Item C1 C2, C3 R1 R2 R3 Q1, Q2 Q3, Q4 U1 Part Number GRM40 X7R 106 6.3 C2012X5RR0J106M GRM42-2 X5R 226K 6.3 C3225X5R1A226M CRCW08051002 CRCW08059761 CRCW08052152 CRCW08054642 CRCW08058253 CRCW080549R9 F SUB15P01-52 Manufacturer Murata(1) TDK(2) Murata TDK Vishay Dale(3) Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Dale Vishay Siliconix(5) Description 10µF, 6.3V Ceramic MLCC, Size 0805 10µF, 6.3V Ceramic MLCC, Size 0805 22µF, 6.3V Ceramic MLCC, Size 1210 22µF, 10V Ceramic MLCC, Size 1210 10kΩ Resistor, Size 0805 Output Voltage:2.5V; 9.76kΩ Resistor, Size 0805(4) Output Voltage:1.8V; 21.5kΩ Resistor, Size 0805(4) Output Voltage:1.5V; 46.4kΩ Resistor, Size 0805(4) Output Voltage:1.25V; 825kΩ Resistor, Size 0805(4) 49.9Ω Resistor, Size 0805 P-Channel MOSFET TO-263 MIC5159BM6/YM6 Micrel, Inc.(6) Programmable Current Limit µCap LDO Regulator Qty. 1 2 1 1 1 1 1 1 4 1 Notes: 1. Murata Tel: 949-916-4000 2. TDK Tel: 1-888-835-6646 3. Vishay Dale Tel: 402-563-6866 4. To calculate other output voltage values: R2 = R1 ⎛ VOUT ⎜ ⎜ ⎝ 1.235 ⎞ ⎟ −1 ⎟ ⎠ 5. Vishay Siliconix Tel: 402-563-6866 6. Micrel, Inc. Tel: 408-944-0800 June 2006 22 M9999-062706 Micrel, Inc. MIC5159 Package Information 6-Pin SOT-23 (M6) 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. © 2004 Micrel, Incorporated. June 2006 23 M9999-062706