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700 V Non-Isolated Off-Line Regulator
Up to 60 mA Output Current MP171 Rev. 1.0 www.MonolithicPower.com 1 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. The Future of Analog IC Technology
DESCRIPTION
MP171 is a primary-side regulator that provides accurate constant voltage (CV) regulation without an opto-coupler. It supports buck, boost, buck-boost, and flyback topologies. It has an integrated 700 V MOSFET to simplify the structure and reduce cost. These features make it an ideal regulator for offline low-power applications, such as home appliances and standby power. MP171 is a green-mode-operation regulator. Both the peak current and switching frequency decrease as the load decreases. This feature provides excellent efficiency at light load and improves the overall average efficiency. MP171 has various protection features including thermal shutdown (TSD), VCC under- voltage lockout (UVLO), overload protection (OLP), short-circuit protection (SCP), and open- loop protection. MP171 is available in a small TSOT23-5 package and SOIC-8 package.
FEATURES
Primary-Side CV Control, Supporting Buck, Boost, Buck-Boost, and Flyback Topologies Integrated 700 V MOSFET and Current Source < 30 mW No-Load Power Consumption Up to 2 W Output Power Maximum DCM Output Current Less than 40 mA Maximum CCM Output Current Less than 60 mA Low VCC Operating Current Frequency Foldback Limited Maximum Frequency Peak Current Compression Internally Biased VCC TSD, UVLO, OLP, SCP, Open-Loop Protection
APPLICATIONS
Home Appliances, White Goods, and Consumer Electronics Industrial Controls Standby Power All MPS parts are lead-free, halogen-free, and adhere to the RoHS directive. For MPS green status, please visit the MPS website under Quality Assurance. “MPS” and “The Future of Analog IC Technology” are registered trademarks o f Monolithic Power Systems, Inc. TYPICAL APPLICATION MP171 L N Input C1 SOURCE SOURCE DRAIN VCC FB C2 R1 VOUT GND
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 2 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.
ORDERING INFORMATION
Part Number Package Top Marking MP171GJ* TSOT23-5 See Below MP171GS** SOIC-8 See Below * For Tape & Reel, add suffix –Z (e.g. MP171GJ–Z). ** For Tape & Reel, add suffix –Z (e.g. MP171GS–Z). TOP MARKING(TSOT23-5) APL: product code of MP171GJ; Y: year code; TOP MARKING (SOIC-8) MP171: part number; LLLLLLLL: lot number; MPS: MPS prefix: Y: year code; WW: week code: PACKAGE REFERENCE TOP VIEW TOP VIEW SOURCESOURCE VCC FB DRAIN VCC FB NC DRAIN SOURCE SOURCE NC NC TSOT23-5 SOIC-8
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 3 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. ABSOLUTE MAXIMUM RATINGS (1) DRAIN to SOURCE (TJ = +25°C)-0.3 V to 700 V Recommended Operating Conditions (3) Operating junction temp (TJ).... -40°C to +125°C Thermal Resistance (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 T J(MAX), the junction-to- ambient thermal resistance θJA, and the ambient temperature TA. The maximum allowance continuous power dissipation at any ambient temperature is calculated by P D(MAX)=(TJ(MAX)- TA)/θJA. Exceeding the maximum allowance power dissipation will produce an excessive die temperature, causing the regulator to go into thermal shutdown. Internal thermal shutdown circuit protects the device from permanent damage. 3) The device is not guaranteed to function outside of its operating conditions. 4) Measured on JESD51-7, 4-layer PCB.
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 4 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.
ELECTRICAL CHARACTERISTICS
VCC = 5.5 V, TJ = -40°C~125°C, min and max are guaranteed by characterization, typical is tested under 25°C, unless otherwise specified. Parameter Symbol Condition Min Typ Max Units Start-up Current Source and Internal MOSFET (DRAIN) Internal regulator supply current I regulator VCC = 4 V; VDrain = 100 V 2.2 4.1 6 mA DRAIN leakage current I Leak VCC = 5.8 V; V Drain = 400 V 10 17 μA Breakdown voltage V (BR)DSS TJ = 25°C 700 V On resistance R on T J = 25°C 20 25 Ω Supply Voltage Management (VCC) VCC level (increasing) where the internal regulator stops VCCOFF 5.4 5.7 6 V VCC level (decreasing) where the internal regulator turns on VCCON 5.1 5.5 5.8 V VCC regulator on and off hysteresis 130 250 mV VCC level (decreasing) where the IC stops VCCstop 3 3.4 3.6 V VCC level (decreasing) where the protection phase ends VCCpro 2 2.5 2.8 V Internal IC consumption I CC f s = 36 kHz, D = 64% 720 μA Internal IC consumption (no switching) I CC 200 µA Internal IC consumption, latch-off phase I CCLATCH VCC = 5.3 V 16 24 μA Internal Current Sense Peak current limit I Limit T J = 25°C 85 105 125 mA Leading-edge blanking τLEB1 350 ns SCP threshold I SCP T J = 25°C 220 300 400 mA Leading-edge blanking for SCP (1) τLEB2 180 ns Feedback Input (FB) Minimum off time τminoff 7.5 10 12.5 μs Maximum on time τmanon 13 18 23 μs Primary MOSFET feedback turn-on threshold VFB 2.45 2.55 2.65 V OLP feedback trigger threshold V FB_OLP 1.64 1.74 1.84 V OLP delay time τOLP fs = 36 kHz 175 ms Open-loop detection V OLD 0.4 0.5 0.6 V Thermal Shutdown Thermal shutdown threshold (1) 150 °C Thermal shutdown recovery hysteresis (1) 30 °C NOTE: 1) This parameter is guaranteed by design.
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 5 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL CHARACTERISTICS 710 720 730 740 750 760 770 780 790 800 810 -40 -25-10 5 20 35 50 65 80 95 110125 5.69 5.70 5.71 5.72 5.73 2.52 2.53 2.54 2.55 2.56 5.42 5.43 5.44 5.45 5.46 5.47 5.48 5.49 5.50 2.30 2.35 2.40 2.45 2.50 2.55 2.60 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 5 20 35 50 65 80 95 110125-40 -25-10 5 20 35 50 65 80 95 110125-40 -25-10 5 20 35 50 65 80 95 110125 -40 -25-10 52 0 3 5 5 0 6 580 95 110125 -40 -25-10 52 0 3 5 5 0 6 580 95 110125 -40 -25-10 52 0 3 5 5 0 6 580 95 110125 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 96.0 98.0 100.0 102.0 104.0 106.0 108.0 280 285 290 295 300 305 310 9.4 9.5 9.6 9.7 9.8 9.9 10.0
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 6 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL PERFORMANCE CHARACTERISTICS VIN = 230 VAC, V OUT = 5 V, I OUT = 50 mA, L = 1 mH, C OUT = 22 μF, TA = +25°C, unless otherwise noted. VDS 100V/div. IL 100mA/div. VDS 100V/div. IL 100mA/div. VDS 100V/div. IL 100mA/div. VDS 100V/div. IL 200mA/div. VDS 100V/div. IL 100mA/div. VDS 100V/div. IL 100mA/div. VDS 100V/div. IL 200mA/div. VRIPPLE 50mV/div. VRIPPLE 50mV/div. IOUT 50mA/div.
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 7 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. PIN FUNCTIONS Pin # TSOT23-5 Pin # SOIC8 Name Description 1 1 VCC Control circuit power supply. 2 2 FB Regulator feedback. 3,4 3,4 SOURCE Internal power MOSFET so urce and ground reference for VCC and FB. 5 7 DRAIN Internal power MOSFET drai n and high-voltage current source input. 5,6,8 NC No connection.
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 8 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. FUNCTIONAL BLOCK DIAGRAM DRAINVCC FB SOURCE Start-Up UnitPower Management Feedback Control Driving Signal Management Protection Unit Peak Current Limitation Figure 1—Functional block diagram
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 9 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. OPERATION MP171 is a green-mode-operation regulator: The peak current and the switching frequency both decrease with a decreasing load. As a result, it offers excellent light-load efficiency and improves overall average efficiency. Also, the regulator incorporates multiple features and operates with a minimal number of external components. The MP171 acts as a fully integrated regulator when used in buck topology (see Typical Application on page 1). Start-Up and Under-Voltage Lockout The internal high-voltage regulator self-supplies the IC from DRAIN. When VCC voltage reaches VCC OFF, the IC starts switching, and the internal high-voltage regulator turns off. The internal high- voltage regulator turns on to charge the external VCC capacitor when the VCC voltage falls below VCC ON. A small capacitor (in the low μF range) maintains the VCC voltage and thus lowers the capacitor cost. The IC stops switching when the VCC voltage drops blow VCCstop. Under fault conditions—such as OLP, SCP, and TSD—the IC stops switching, and an internal current source (~16 μA) discharges the VCC capacitor. The internal high-voltage regulator will not charge the VCC capacitor until the VCC voltage drops below VCC pro. The re-start time can be estimated using Equation (1): pro OFF pro restart VCC CCLATCH regulator VCC VCC VCC VCCC II (1) Soft Start (SS) The IC stops operation when the VCC voltage drops below VCC stop; the IC begins operation when VCC charges to VCC OFF. Every time the chip starts operation there is a soft-start period. The soft start prevents the inductor current from overshooting by limiting the minimum off time. MP171 adopts a 2 phase minimum off time limit soft start. Each soft-start phase retains 128 switching cycles. During the soft start, the off time limit gradually shortens from 48 μs to 18 μs and finally reaches the normal operation off time limit (see Figure 2).
128 Switching cycle
48 us 18 us 10 us Driver Figure 2— minoff at start-up Constant Voltage (CV) Operation The MP171 regulates the output voltage by monitoring the sampling capacitor. At the beginning of each cycle, the integrated MOSFET turns on while the feedback voltage drops below the 2.55 V reference voltage, which indicates insufficient output voltage. The peak current limitation determines the on period. After the on period elapses, the integrated MOSFET turns off. The sampling capacitor (C3) voltage is charged to the output voltage when the freewheeling diode (D1) turns on. In his way, the sampling capacitor (C3) samples and holds the output voltage for output regulation. The sampling capacitor (C3) voltage decreases when the L1 inductor current falls below the output current. When the feedback voltage falls below the 2.55 V reference voltage, a new switching cycle begins. Figure 3 shows this operation in continuous conduction mode (CCM). MOSFET Diode IL Ipeak Io Vo VFB 2.55V Figure 3—V FB vs. VO Equation (2) determines the output voltage: R1 R2Vo 2.55V R2 (2)
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 10 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Frequency Foldback and Peak Current Compression The MP171 remains highly efficient at light-load conditions by reducing the switching frequency automatically. Under light-load or no-load conditions, the output voltage drops very slowly, which increases the MOSFET off time. Thus, the frequency decreases along with the load. The switching frequency is determined with Equation (3) and Equation (4): in o o s peak o in (V V ) Vf 2L(I I ) V , for CCM (3) in O o o s 2 peak in 2(V V ) I Vf LI V , for DCM (4) As the peak current limit decreases from 105 mA, the off time increases. In standby mode, the frequency and the peak current are both minimized, allowing for a smaller dummy load. As a result, peak current compression helps further reduce no-load consumption. The peak current limit can be estimated from Equation (5) where τoff is the off time of the power module: Peak offI1 0 5 m A ( 0 . 4 m A / s ) ( 1 0 s ) (5) EA Compensation VFB M + Vref 2.55V EA FB Comparator Vramp Vramp Ipeak Figure 4—EA and ramp compensation MP171 has an internal error amplifier (EA) compensation loop. It samples the feedback voltage 6 µs after the MOSFET turns off and regulates the output based on the 2.55 V reference voltage. Ramp Compensation An internal ramp compensation circuit improves the load regulation. As shown in Figure 4, a voltage sinking source is added to pull down the reference voltage of the feedback comparator. The ramp compensation is relative to the MOSFET off time, and increases exponentially as the off time increases. The compensation is about 1mV/µs under min off time switching condition. Over-Load Protection (OLP) The maximum output power of the MP171 is limited by the maximum switching frequency and the peak current limit. If the load current is too large, the output voltage drops, causing the FB voltage to drop. When the FB voltage drops below V FB_OLP, it is considered an error flag, and the timer starts. If the timer reaches 170 ms (fS = 36 kHz) , OLP occurs. This timer duration avoids triggering OLP when the power supply starts up or the load transitions. The power supply should start up in less than 170 ms (fS = 36 kHz) . The OLP delay time is calculated using Equation (6): Delay s 36kHz170ms f (6) Short-Circuit Protection (SCP) The MP171 monitors the peak current and shuts down when the peak current rises above the SCP threshold through short-circuit protection. The power supply resumes operation with the removal of the fault. Thermal Shutdown (TSD) To prevent thermal induced damage, the MP171 stops switching when the junction temperature exceeds 150 °C. During thermal shutdown (TSD), the VCC capacitor is discharged to VCC pro, and the the internal high-voltage regulator re-charges. MP171 recovers when the junction temperature drops below 120°C. Open-Loop Detection If V FB is less than 0.5 V, the IC stops switching, and a re-start cycle begins. During a soft start, the open-loop detection is blanked.
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 11 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Leading-Edge Blanking An internal leading-edge blanking (LEB) unit avoids premature switching pulse termination due to a turn-on spike. A turn-on spike is caused by parasitic capacitance and reverse recovery of the freewheeling diode. During the blanking time, the current comparator is disabled and cannot turn off the external MOSFET. Figure 5 shows the leading-edge blanking. ILIMIT 350ns IDS t Figure 5—Leading-edge blanking
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 12 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.
APPLICATION INFORMATION
Table 1—Common topologies using MP171 Topology Circuit Schematic Features High-side buck MP171 3 4 DRAIN VCC FB SOURCE SOURCE Vin Vo 1. No isolation 2. Positive output 3. Low cost 4. Direct feedback High-side buck-boost MP171 3 4 DRAIN VCC FB SOURCE SOURCE Vin Vo 1. No isolation 2. Negative output 3. Low cost 4. Direct feedback Boost MP171 DRAIN VCC FB SOURCE SOURCE Vin Vo 1. No isolation 2. Positive output 3. Low cost 4. Direct feedback Flyback T V in DRAIN VCC FB SOURCE SOURCE MP171 1. Isolation 2. Positive output 3. Low cost 4. Indirect feedback
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 13 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Topology Options MP171 can be used in common topologies such as buck, boost, buck-boost, and flyback (see Table 1). Component selection below is based on the typical application of MP173 (see it on page 1). Component Selection Input Capacitor The input capacitor supplies the DC input voltage for the converter. Figure 6 shows the typical DC bus voltage waveform of a half-wave rectifier and a full-wave rectifier. Vin DC input voltage t VDC(min) VDC(max) AC input voltage Vin DC input voltage t VDC ( min ) VDC(max) AC input voltage Figure 6—Input voltage waveform Typically, the use of a half-wave rectifier requires an input capacitor rated at 3 µF/W for the universal input condition. When using a full-wave rectifier, an input capacitor is chosen between 1.5~2 µF/W for the universal input condition. A half-wave rectifier is recommended for a < 2 W output application, otherwise use a full-wave rectifier. Under very low input voltage, the inductor current ramps up slowly; it may not reach the current limit during τmanon, so the MOSFET maximum on time should be less than the minimum value of τmanon. Inductor The MP171 has a minimum off-time limit that determines the maximum power output. A power inductor with a larger inductance increases the maximum power. Using a very small inductor may cause failure at full load. Estimate the maximum power using Equation (7) and Equation (8): om i n o f f omax o peak VPV ( I ) 2L , for CCM (7) omax peak minoff 11PL I 2 , for DCM (8) For mass production, tolerance on the parameters (such as peak current limitation) and the minimum off time should be taken into consideration. Freewheeling Diode Select a diode with a maximum reverse-voltage rating greater than the maximum input voltage and a current rating determined by the output current. The reverse recovery of the freewheeling diode affects efficiency and circ uit operation during a CCM condition, so use an ultra-fast diode such as the EGC10JH. Output Capacitor The output capacitor is required to maintain the DC output voltage. Estimate the output voltage ripple using Equation (9) and Equation (10): CCM _ ripple ESR so iVi R 8f C pk oo DCM _ ripple pk ESR so p k IIIVI R fC I , for DCM (10) It is recommended to use ceramic, tantalum, or low ESR electrolytic capacitors to reduce the output voltage ripple. Feedback Resistors The resistor divider determines the output voltage. Choose appropriate R1 and R2 values to maintain V FB at 2.55 V. An excessively large value for R2 should be avoided. Sampling Capacitor The sampling capacitor (C3) samples and holds the output voltage for feedback. With R1 and R2 fixed, a small sampling capacitor result in poor regulation at light loads, and large sampling capacitor affect the circuit operation. Roughly estimate an optimal capacitor value using Equation (11):
9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Figure 9. The typical performance and circuit related evaluation board datasheets.
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 16 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. TYPICAL APPLICATION CIRCUITS Figure 9 shows a typical application example of a 5 V, 50 mA non-isolated power supply using the MP171. L N GND Vout GND RF1 470 pF 2.2 µF SRGC10JH 22 µF STTH1R06
600 V/1 A
2.2 µF/400 V 2 . 2µ F / 4 0 0V 1m H 41.2 K 39.2 K 22 nF 1.2 K 1m H SRJC10JH SRGC10JH 5V / 5 0m A
85 VAC~265VAC
E SOURC E MP171GS NC Figure 9—Typical application at 5 V, 50 mA
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 17 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. FLOW CHART UVLO, SCP, OLP, OTP and Open-Loop Protections are Auto Restart Power On VCC>VCCOFF Internal High Voltage Regulator On Y N Soft Start Monitor FB Voltage Monitor VCC OLP Fault Logic High Y TSD, SCP and Open-Loop Monitor Vcc Decrease to VCCPRO Shut Down Internal High Voltage Regulator N Fault Logic High? Y N Stop Operation Y N Y < VFB Turn On the MOSFET Y N Counts to 6144 Switching Cycle? Y YN <V OLD Y Open-Loop Logic High Internal High Voltage Regulator On NShuts Down Internal High Voltage Regulator Y N VCC>VCCSTOP VCC>VCCOFF VCC<VCCON <V FB_OLP OLP Fault Logic High? Y N Reset Counter Count Switching Cycle N Figure 10—Control flow chart
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 18 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. Start Up Normal Operation Unplug from Main Input16µA Discharge Current Driver Pluses Start-Up Blanking Time Internal Regulator Supply Current On and Off Fault Flag VCCOFF VCCON VCCSTOP VCCPRO Open-Loop Fault Over-Load Fault Counter<6144 Over-Load Fault Counter=6144 Short Circuit Fault Thermal Shutdown Fault Driver VCC Figure 11—Signal evolution in the presence of a fault
MP171 –NON-ISOLATED OFFLINE REGULATOR MP171 Rev. 1.0 www.MonolithicPower.com 19 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved.
PACKAGE INFORMATION
0.30 0.50 SEATING PLANE 0. 95 BSC 0.90 1.30 1.45 MAX 0.00 0.15 TOP VIEW FRONT VIEW SIDE VIEW RECOMMENDED LAND PATTERN 2. 80 3. 00 1.50 1.70 2.60 3.00 0.09 0.20 NOTE: 1) ALL DIMENSIONS ARE IN MILLIMETERS . 2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH, PROTRUSION OR GATE BURR. 3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH OR PROTRUSION. 4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING) S H A L L B E 0.10 MILLIMETERS MAX . 5) DRAWING CONFORMS TO JEDEC MO -178, VARIATION AA. 6) DRAWING IS NOT TO SCALE. 0.30 0.550 o- 8o
0.25 BSC
2.60 TYP 1.20 TYP 0.95 BSC 0.60 TYP SEE DETAIL "A" DETAIL “A”
MP171 –NON-ISOLATED OFFLINE REGULATOR NOTICE: The information in this document is subject to change wi thout notice. Users should warra nt and guarantee that third party Intellectual Property rights are not infringed upon w hen integrating MPS products into any application. MPS will not assume any legal responsibility for any said applications. MP171 Rev. 1.0 www.MonolithicPower.com 20 9/30/2015 MPS Proprietary Information. Patent Protec ted. Unauthorized Photocopy and Duplication Prohibited. © 2015 MPS. All Rights Reserved. 0.016(0.41) 0.050(1.27)0o-8o DETAIL "A" 0.010(0.25) 0.020(0.50) x 45o SEE DETAIL "A" 0.0075(0.19) 0.0098(0.25) 0.150(3.80) 0.157(4.00)PIN 1 ID 0.050(1.27) BSC 0.013(0.33) 0.020(0.51) SEATING PLANE 0.004(0.10) 0.010(0.25) 0.189(4.80) 0.197(5.00) 0.053(1.35) 0.069(1.75) TOP VIEW FRONT VIEW 0.228(5.80) 0.244(6.20) SIDE VIEW RECOMMENDED LAND PATTERN 0.213(5.40) 0.063(1.60) 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. 0.010(0.25) BSC GAUGE PLANE