MP2490 1.5A, 36V, 700KHz Step-Down Converter with Programmable Output Current Limit The Future of Analog IC Technology DESCRIPTION FEATURES The MP2490 is a monolithic step-down switch mode converter with a programmable output current limit. It achieves 1.5A continuous output current over a wide input supply range with excellent load and line regulation. • • • • • • The maximum output current can be programmed by sensing current through the inductor DC resistance (DCR) or an accurate sense resistor. • • • • • Fault condition protection includes cycle-by-cycle current limiting and thermal shutdown. The MP2490 requires a minimum number of readily available standard external components. The MP2490 is available in QFN10 (3mm x 3mm), 8-pin SOIC and PDIP packages. Wide 4.5V to 36V Operating Input Range Programmable up to 1.5A Output Current Output Adjustable from 0.8V to 15V Programmable Output Current Limit without power loss 0.25Ω Internal Power MOSFET Switch Stable with Low ESR Output Ceramic Capacitors 95% Efficiency @ 500mA (Vo=5V) Fixed 700KHz Frequency Thermal Shutdown Cycle-by-Cycle Over Current Protection Available in QFN10 (3mm x 3mm), 8-Pin SOIC and PDIP Packages APPLICATIONS • • • USB Power Supplies Automotive Cigarette Lighter Adapters Power Supply for Linear Chargers “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. TYPICAL APPLICATION Efficiency vs. Load Current 100 9 VIN 4.5V - 36V ISN VIN ISP EN R5 6 7 R8 C9 10nF MP2490 3 EN SW L1 10 5V PGOOD V-PULL-UP VOUT D1 5 FB SS VIN=8V 90 4 EFFICIENCY (%) 8 PGOOD BST 1 VIN=12V 80 70 60 VIN=24V GND 2 50 10 MP2490 Rev. 0.92 4/23/2010 VOUT=5V GND 100 1000 LOAD CURRENT (mA) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 10000 1 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT ORDERING INFORMATION Part Number Package Top Marking Free Air Temperature (TA) MP2490DQ * QFN10 (3mm X 3mm) T6 –40°C to +85°C MP2490DS SOIC8 MP2490DS –40°C to +85°C MP2490CP PDIP8 MP2490CP 0°C to +70°C * For Tape & Reel, add suffix –Z (e.g. MP2490DQ–Z); For RoHS, compliant packaging, add suffix –LF (e.g. MP2490DQ–LF–Z). PACKAGE REFERENCE TOP VIEW VIN 1 10 SW GND 2 9 BST EN 3 8 PGOOD FB 4 7 ISP SS 5 6 ISN TOP VIEW VIN 1 8 SW GND 2 7 BST FB 3 6 ISP SS 4 5 ISN EXPOSED PAD ON BACKSIDE CONNECT TO GND QFN10 (3mm X 3mm) SOIC/PDIP ABSOLUTE MAXIMUM RATINGS (1) Thermal Resistance Supply Voltage VIN ....................................... 40V VSW ....................................... –0.3V to VIN + 0.3V VBST ................................................... VSW + 6.5V VISN, vISP ................................................0V to15V All Other Pins ..............................–0.3V to +6.5V (2) Continuous Power Dissipation (TA = +25°C) QFN10 (3mm x 3mm) ................................ 2.5W SOIC8 ...................................................... 1.39W PDIP8 ...................................................... 1.32W Junction Temperature ...............................150°C Lead Temperature ....................................260°C Storage Temperature.............. –65°C to +150°C QFN10 (3mm x 3mm) .............50 ...... 12 ... °C/W SOIC8 .....................................90 ...... 45 ... °C/W PDIP8......................................95 ...... 55 ... °C/W Recommended Operating Conditions (3) Supply Voltage VIN ...........................4.5V to 36V Output Voltage VOUT (VIN>16.5V) ....... 0.8V to 15 Output Voltage VOUT (VIN<=16.5V) ...................... .........................................0.8V to (VIN–1.5)V Operating Junction Temperature (TJ) ................................................ –40°C to +125°C MP2490 Rev. 0.92 4/23/2010 (4) θJA θJC Notes: 1) Exceeding these ratings may damage the device. 2) The maximum allowable power dissipation is a function of the maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature TA. The maximum allowable continuous power dissipation at any ambient temperature is calculated by PD (MAX) = (TJ (MAX)-TA)/θJA. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JEDEC51-7 4 layer PCB. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 2 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT ELECTRICAL CHARACTERISTICS VIN = 12V, TA = +25°C, unless otherwise noted. Parameters Symbol Feedback Voltage VFB Feedback Bias Current IBIAS(FB) Switch On Resistance RDS(ON) Switch Leakage Current Limit Condition 4.5V ≤ VIN ≤ 36V Typ Max Units 0.785 0.805 0.825 V VFB = 0.8V VEN = 0V, VSW = 0V (5) Oscillator Frequency fSW Fold-Back Frequency VFB = 0.6V tON 0.25 Ω μA 2.2 2.6 3 A 560 700 840 KHz VFB = 1V Under Voltage Lockout Threshold Rising nA 10 VBST - VSW (5) 10 0.1 VFB = 0V Boot-Strap Voltage Minimum On Time Min 3.0 Under Voltage Lockout Threshold Hysteresis 200 KHz 5 V 100 ns 3.3 200 EN Input Low Voltage (6) En Input High Voltage (6) EN Input Bias Current (6) 1.8 VEN = 0-6V –10 VEN = 0V Supply Current (Quiescent) VEN = 2V, VFB = 1V (5) V mV 0.4 Supply Current (Shutdown) Thermal Shutdown 3.6 V V –2 10 μA 4 10 μA 500 800 μA 150 °C Current Sense Voltage VISP –VISN VISP, VISN 0.4–15V 90 100 110 mV Input Bias Current (ISN, ISP) IBIAS (ISN,ISP) VISP, VISN 0.4–15V –1 0.1 +1 uA 0.3 V PGOOD Sink Current Sink Current 5mA Note: 5) Guaranteed by design 6) Enable function is only available for the MP2490DQ MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 3 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT PIN FUNCTIONS QFN10-3 Pin # SOIC-8 / PDIP-8 Pin# 1 1 2 2 3 4 3 5 4 6 7 5 6 8 9 7 10 8 MP2490 Rev. 0.92 4/23/2010 Name Description Supply Voltage. The MP2490 operates from a +4.5V to +36V unregulated input. CIN is needed to prevent large voltage spikes from appearing at the VIN input. Put CIN as close to the IC as possible. It is the drain of the internal power device and power supply for the whole chip. Ground. This pin is the voltage reference for the regulated output voltage. For this reason care must be taken in its layout. This node should be placed GND outside of the D1 to CIN ground path to prevent switching current spikes from inducing voltage noise into the part. EN On/Off Control Input. (Only available for the MP2490DQ) Feedback. An external resistor divider from the output to GND, tapped to the FB pin sets the output voltage. To prevent current limit run away during a FB short circuit fault condition the frequency-fold-back comparator lowers the oscillator frequency when the FB voltage is below 250mV. Connect to an external capacitor used for Soft-Start and compensation for SS current limiting loop. ISN Negative Current Sense Input for load current limiting. ISP Positive Current Sense Power good signal. When FB is less than 90% of 0.8V, PGOOD is low. It is PGOOD an open-drain output. Use a high value pull-up resistor externally to pull it up to system power supply. Bootstrap. This capacitor is needed to drive the power switch’s gate above the supply voltage. It is connected between SW and BST pins to form a floating supply across the power switch driver. An on-chip regulator is used BST to charge up the external boot-strap capacitor. If the on-chip regulator is not strong enough, one optional diode can be connected from IN or OUT to charge the external boot-strap capacitor. SW Switch Output. It is the source of power device. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 4 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT TYPICAL PERFORMANCE CHARACTERISTICS C1=C2=4.7μF, C3=C4=10μF, C8=0.1μF, L=12μH, TA=25ºC, unless otherwise noted Efficiency vs. Load Current 100 Efficiency vs. Load Current 100 VIN=8V 70 VIN=24V 50 10 VOUT=3.3V 100 1000 LOAD CURRENT (mA) VIN=12V 80 70 VIN=24V 60 50 10 10000 3.40 5.10 3.36 5.06 3.32 3.28 VIN=5V VIN=12V 3.24 VIN=24V 0 60 OUTPUT VOLTAGE (V) 3.0 2.8 2.6 2.4 2.2 VOUT=3.3V 60 70 80 DUTY CYCLE (%) VIN=8V VIN=24V VIN=12V 0 100 1000 LOAD CURRENT (mA) 10000 12.2 12.1 12.0 11.9 VIN=36V VIN=24V VIN=15V 11.8 11.7 400 800 1200 1600 2000 LOAD CURRENT (mA) 0 400 800 1200 1600 2000 LOAD CURRENT (mA) Current Regulation Loop Gain Bode Plot VIN =12V, VOUT=5V R: Sense to RS, L: Sense to DCR VIN =12V, VOUT=5V, IOUT=0.5A 60 135 40 4.5 R 3.5 L 2.5 1.5 Phase 20 0 0.5 1.0 1.5 2.0 LOAD CURRENT (A) 2.5 90 45 Gain 0 0 -20 -45 -40 -90 -60 0.5 90 VOUT=12V Load Regulation 4.94 5.5 VIN=36V 1 10 100 FREQUENCY (kHz) www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. PHASE DEGREE PEAK CURRENT (A) 3.2 MP2490 Rev. 0.92 4/23/2010 70 50 10 10000 4.98 4.90 400 800 1200 1600 2000 LOAD CURRENT (mA) 50 80 12.3 5.02 Peak Current vs. Duty Cycle 2.0 40 100 1000 LOAD CURRENT (mA) VIN=24V Load Regulation OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) Load Regulation VOUT=5V OUTPUT VOLTAGE (V) 60 EFFICIENCY (%) VIN=12V VIN=18V 90 GAIN (dB) 80 3.20 100 VIN=8V 90 EFFICIENCY (%) EFFICIENCY (%) 90 Efficiency vs. Load Current -135 1000 5 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT TYPICAL PERFORMANCE CHARACTERISTICS (continued) C1=C2=4.7μF, C3=C4=10μF, C8=0.1μF, L=12μH, TA=25ºC, unless otherwise noted Steady State Power Ramp Up Power Ramp Down VIN=8V, VEN put to VIN VOUT=5V, IOUT=1.8A, Electrical Load VIN=12V, VEN put to VIN VOUT=5V, IOUT=130mA, Resistor Load VIN=12V, VEN put to VIN VOUT=5V, IOUT=130mA, Resistor Load VPG 5V/div VIN 10V/div VIN 10V/div VSW 10V/div VSW 5V/div VOUT 20mV/div IL 1A/div VSW 10V/div VOUT 5V/div VOUT 5V/div IL 0.2A/div IL 0.2A/div 2ms/div 10ms/div Steady State Enable Up Enable Down VIN=16V, VEN put to VIN VOUT=5V, IOUT=1.8A, Electrical Load VIN=15V, VEN put to VIN VOUT=12V, IOUT=1A, Resistor Load VIN=15V, VEN put to VIN VOUT=12V, IOUT=1A, Resistor Load VPG 5V/div VEN 2V/div VEN 2V/div VSW 20V/div VSW 10V/div VSW 10V/div VOUT 20mV/div IL 1A/div VOUT 10V/div IOUT 1A/div VOUT 10V/div IOUT 1A/div 1ms/div Steady State Short Circuit Short Circuit Recovery VIN=15V, VEN put to VIN VOUT=12V, IOUT=1.8A, Electrical Load VIN=12V, VEN put to VIN VOUT=5V VIN=12V, VEN put to VIN VOUT=5V VPG 5V/div VSW 10V/div VOUT 2V/div VOUT 2V/div VOUT 20mV/div IL 1A/div IL 2A/div IL 2A/div 2ms/div MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 6 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT OPERATION Main Control Loop The MP2490 is a current mode buck regulator. That is, the error amplifier (EA) output voltage is proportional to the peak inductor current. At the beginning of a cycle, the integrated high side power switch M1 (Fig.1) is off; the EA output voltage is higher than the current sense amplifier output; and the current comparator’s output is low. The rising edge of the 700KHz clock signal sets the RS Flip-Flop. Its output turns on M1 thus connecting the SW pin and inductor to the input supply. The increasing inductor current is sensed and amplified by the Current Sense Amplifier. Ramp compensation is added to Current Sense Amplifier output and compared to the Error Amplifier output by the PWM Comparator. When the Current Sense Amplifier plus Slope Compensation signal exceeds the EA output voltage, the RS Flip-Flop is reset and the MP2490 reverts to its initial M1 off state. If the Current Sense Amplifier plus Slope Compensation signal does not exceed the COMP voltage, then the falling edge of the CLK resets the Flip-Flop. Load Current Limiting Loop The output current information is sensed via the ISP and ISN pins. The regulation threshold is set at 100mV. If VSENSE, the difference of VISP and VISN, is less than 100mV, the output voltage of the power supply will be set by the FB pin. If VSENSE reaches 100mV, the current limit loop will pull down SS and regulate the output at a constant current determined by the external sense resistor. The external capacitor on SS pin is the dominant compensation capacitor for load current regulation loop. The capacitor has normal value of 100nF, which will put the bandwidth of load current regulation loop to be less than 1 kHz. When VSENSE is higher than 100mV, SS will not drop down to the final regulation level immediately. It will cause the load current to be higher than the programmed level for a short period. A fast comparator is added to shut down power switch when the average load current is higher than 120% of the programmed current limit level. An inductor DC resistance (DCR) or accurate sense resistor can be used for load current sensing. The output of the Error Amplifier integrates the voltage difference between the feedback and the 0.8V bandgap reference. The polarity is such that a FB pin voltage lower than 0.8V increases the EA output voltage. Since the EA output voltage is proportional to the peak inductor current, an increase in its voltage increases current delivered to the output. An external Schottky Diode (D1) carries the inductor current when M1 is off. MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 7 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT VIN CURRENT SENSE AMPLIFIER D + -REGULATOR BST REGULATOR OSCILLATOR 700KHz S + -1pF REFERENCE 20pF SS R CURRENT LIMIT COMPARATOR SW R SS ISP -+ + -- PWM COMPARATOR -- 0.72V ERROR AMPLIFIER M1 DRIVER + + -- FB GND R1 Q -- + EN 100mV ISN PGOOD Figure 1—Functional Block Diagram MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 8 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT APPLICATION INFORMATION Setting the Output Voltage The external resistor divider is used to set the output voltage (see the schematic on front page). The feedback resistor R1 also sets the feedback loop bandwidth with the internal compensation capacitor (see Figure 1). Choose R1 to be around 300kΩ for optimal transient response. R2 is then given by: R2 = R1 VOUT −1 0 .8 V Table 1—Resistor Selection for Common Output Voltages VOUT (V) R1 (kΩ) R2 (kΩ) 1.8 2.5 3.3 5 300 (1%) 300 (1%) 300 (1%) 300 (1%) 240 (1%) 141.1 (1%) 96 (1%) 57.1 (1%) Selecting the Inductor A 1µH to 15µH inductor with a DC current rating of at least 25% percent higher than the maximum load current is recommended for most applications. For highest efficiency, the inductor DC resistance should be less than 200mΩ. For most designs, the inductance value can be derived from the following equation. L= VOUT × ( VIN − VOUT ) VIN × ΔIL × f SW Where ΔIL is the inductor ripple current. Selecting the Input Capacitor The input capacitor reduces the surge current drawn from the input and also the switching noise from the device. The input capacitor impedance at the switching frequency should be less than the input source impedance to prevent high frequency switching current from pass to the input. Ceramic capacitors with X5R or X7R dielectrics are highly recommended because of their low ESR and small temperature coefficients. For most applications, a 4.7µF capacitor is sufficient. Selecting the Output Capacitor The output capacitor keeps output voltage small and ensures regulation loop stability. The output capacitor impedance should be low at the switching frequency. Ceramic capacitors with X5R or X7R dielectrics are recommended. PC Board Layout The high current paths (GND, IN and SW) should be placed very close to the device with short, direct and wide traces. The input capacitor needs to be as close as possible to the IN and GND pins. The external feedback resistors should be placed next to the FB pin. Keep the switching node SW short and away from the feedback network. ISN, ISP are sensitive nodes. Put the sensing components as close to the device as possible and keep them away from the high current and noisy paths such as GND, IN, SW). Match the trace and components on ISN, ISP paths as good as possible. Choose inductor current ripple to be approximately 30% of the maximum load current,. The maximum inductor peak current is: IL(MAX ) = ILOAD + ΔI L 2 Under light load conditions below 100mA, larger inductance is recommended for improved efficiency. MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 9 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT Output Current Sensing The output current can be sensed through the DC resistance (DCR) of the inductor, as shown in Figure 2a. In Figure 2a, the output current limit is set as: IOUT = 100mV Ra + Rb × DCR Rb For more accurate sensing, use a more accurate sense resistor, as in Figure 2b, where the output current limit is set as: IOUT = 100mV RSENSE Where DCR is the DC resistance of the inductor winding. In Figure 2a, it is desirable to keep R a ⋅ Rb L1 × CS = R a + Rb DCR If, there is no Rb: R a × Cs = L1 DCR Figure 2—Current Sensing Methods MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 10 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT PACKAGE INFORMATION QFN10 (3mm x 3mm) 2.90 3.10 0.30 0.50 PIN 1 ID MARKING 0.18 0.30 2.90 3.10 PIN 1 ID INDEX AREA 1.45 1.75 PIN 1 ID SEE DETAIL A 10 1 2.25 2.55 0.50 BSC 5 6 TOP VIEW BOTTOM VIEW PIN 1 ID OPTION A R0.20 TYP. PIN 1 ID OPTION B R0.20 TYP. 0.80 1.00 0.20 REF 0.00 0.05 SIDE VIEW DETAIL A NOTE: 2.90 0.70 1) ALL DIMENSIONS ARE IN MILLIMETERS. 2) EXPOSED PADDLE SIZE DOES NOT INCLUDE MOLD FLASH. 3) LEAD COPLANARITY SHALL BE 0.10 MILLIMETER MAX. 4) DRAWING CONFORMS TO JEDEC MO-229, VARIATION VEED-5. 5) DRAWING IS NOT TO SCALE. 1.70 0.25 2.50 0.50 RECOMMENDED LAND PATTERN MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 11 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT SOIC8 0.189(4.80) 0.197(5.00) 0.050(1.27) 0.024(0.61) 8 5 0.063(1.60) 0.150(3.80) 0.157(4.00) PIN 1 ID 1 0.228(5.80) 0.244(6.20) 0.213(5.40) 4 TOP VIEW RECOMMENDED LAND PATTERN 0.053(1.35) 0.069(1.75) SEATING PLANE 0.004(0.10) 0.010(0.25) 0.013(0.33) 0.020(0.51) 0.0075(0.19) 0.0098(0.25) SEE DETAIL "A" 0.050(1.27) BSC SIDE VIEW FRONT VIEW 0.010(0.25) x 45o 0.020(0.50) GAUGE PLANE 0.010(0.25) BSC 0.016(0.41) 0.050(1.27) 0o-8o DETAIL "A" MP2490 Rev. 0.92 4/23/2010 NOTE: 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSIONS OR GATE BURRS. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSIONS. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) SHALL BE 0.004" INCHES MAX. 5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA. 6) DRAWING IS NOT TO SCALE. www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 12 MP2490 – 1.5A, 36V, 700KHz STEP-DOWN WITH PROGRAMMABLE OUTPUT CURRENT LIMIT PDIP8 0.367(9.32) 0.387(9.83) 8 5 0.240(6.10) 0.260(6.60) PIN 1 ID 4 1 TOP VIEW 0.320( 8.13) 0.400(10.16) 0.300(7.62) 0.325(8.26) 0.100(2.54) BSC 0.125(3.18) 0.145(3.68) 0.015(0.38) 0.035(0.89) 0.120(3.05) 0.140(3.56) 0.050(1.27) 0.065(1.65) 0.015(0.38) 0.021(0.53) FRONT VIEW 0.008(0.20) 0.014(0.36) SIDE VIEW NOTE: 1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN BRACKET IS IN MILLIMETERS. 2) PACKAGE LENGTH AND WIDTH DO NOT INCLUDE MOLD FLASH, OR PROTRUSIONS. 3) DRAWING CONFORMS TO JEDEC MS-001, VARIATION BA. 4) DRAWING IS NOT TO SCALE. NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications. Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP2490 Rev. 0.92 4/23/2010 www.MonolithicPower.com MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited. © 2010 MPS. All Rights Reserved. 13