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SGM822XMS8G/TR

SGM822XMS8G/TR

  • 厂商:

    SGMICRO(圣邦微)

  • 封装:

    MSOP-8

  • 描述:

    电源管理(PMIC) 2.7V~5.5V MSOP-8

  • 数据手册
  • 价格&库存
SGM822XMS8G/TR 数据手册
SGM822 3-Rail Power Sequencer with Programmable Timing GENERAL DESCRIPTION FEATURES The SGM822 is an integrated, 3-rail power sequencer. ● Up to 3-Rail Power Sequence Control It controls the power-up and power-down sequence of ● Low Quiescent Current: 36μA (TYP) three power supplies by pulling their enable or ● Input Voltage Range: 2.7V to 5.5V shutdown pins high or low. Staggered start sequence ● Pin-Selected Flag Output Logic can avoid the impact of latch conditions or large inrush ● Capacitor-Programmable Power-Up/Power-Down Sequencing Delay current on system reliability. This simple sequencer has three open-drain output flags. When the enable (EN) pin is pulled high, the flags are successively released from FLAG1 to FLAG3 after individual programmable delay time. Then the ● Available in Green MSOP-8 and UTDFN-1.5×1.5-8L Packages APPLICATIONS connected power supplies power up. When the EN pin Multivoltage Systems is pulled low, the flags output low with a reverse Servers sequence from FLAG3 to FLAG1 after individual Networking Systems programmable Telecom Equipment delay time. The delay time is programmed by connecting a capacitor between the Microprocessor, Microcontroller and FPGA Sequencing TADJ pin and ground. The logic of the output flags can Multiple Supply Sequencing be inverted by the user. The SGM822 is available in Green MSOP-8 and UTDFN-1.5×1.5-8L packages. It operates over an ambient temperature range of -40℃ to +125℃. TYPICAL SYSTEM APPLICATION TYPICAL APPLICATION 2.7V to 5.5V Supply Power Supply 0.1µF Device 1 VCC FLAG1 Enable Enable Input FLAG2 INV INV Device 2 EN Device 3 FLAG3 EN SGM822 EN SGM822 Invert EN 0.1µF VCC CADJ 10nF TADJ GND R1 100kΩ R2 100kΩ R3 100kΩ FLAG1 Flag 1 FLAG2 Flag 2 FLAG3 Flag 3 EN GND Figure 2. Typical Application Circuit Figure 1. Typical System Application SG Micro Corp www.sg-micro.com APRIL 2024 – REV. A.2 3-Rail Power Sequencer with Programmable Timing SGM822 PACKAGE/ORDERING INFORMATION MODEL PACKAGE DESCRIPTION SPECIFIED TEMPERATURE RANGE ORDERING NUMBER PACKAGE MARKING PACKING OPTION MSOP-8 -40℃ to +125℃ SGM822XMS8G/TR SGM822 XMS8 XXXXX Tape and Reel, 4000 UTDFN-1.5×1.5-8L -40℃ to +125℃ SGM822XUDW8G/TR 0NE XXX Tape and Reel, 4000 SGM822 MARKING INFORMATION NOTE: XXXXX = Date Code, Trace Code and Vendor Code. MSOP-8 XXXXX Vendor Code Trace Code Date Code - Year UTDFN-1.5×1.5-8L YYY XXX Serial Number Trace Code Date Code - Year Green (RoHS & HSF): SG Micro Corp defines "Green" to mean Pb-Free (RoHS compatible) and free of halogen substances. If you have additional comments or questions, please contact your SGMICRO representative directly. ABSOLUTE MAXIMUM RATINGS VCC, EN, INV, TADJ, FLAG1, FLAG2, FLAG3 to GND ............................................................................. -0.3V to 6V Package Thermal Resistance MSOP-8, θJA ....................................................... 183.3℃/W MSOP-8, θJB ....................................................... 126.4℃/W MSOP-8, θJC ......................................................... 84.5℃/W UTDFN-1.5×1.5-8L, θJA....................................... 149.5℃/W UTDFN-1.5×1.5-8L, θJB....................................... 105.7℃/W UTDFN-1.5×1.5-8L, θJC ...................................... 126.4℃/W Junction Temperature .................................................+150℃ Storage Temperature Range ....................... -65℃ to +150℃ Lead Temperature (Soldering, 10s) ............................+260℃ ESD Susceptibility HBM ............................................................................. 4000V CDM ............................................................................ 1000V RECOMMENDED OPERATING CONDITIONS VCC to GND .......................................................2.7V to 5.5V EN, INV, TADJ, FLAG1, FLAG2, FLAG3 to GND .................................................................-0.3V to VCC + 0.3V Operating Junction Temperature Range ...... -40℃ to +125℃ SG Micro Corp www.sg-micro.com OVERSTRESS CAUTION Stresses beyond those listed in Absolute Maximum Ratings may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect reliability. Functional operation of the device at any conditions beyond those indicated in the Recommended Operating Conditions section is not implied. ESD SENSITIVITY CAUTION This integrated circuit can be damaged if ESD protections are not considered carefully. SGMICRO recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more susceptible to damage because even small parametric changes could cause the device not to meet the published specifications. DISCLAIMER SG Micro Corp reserves the right to make any change in circuit design, or specifications without prior notice. APRIL 2024 2 3-Rail Power Sequencer with Programmable Timing SGM822 PIN CONFIGURATIONS (TOP VIEW) VCC (TOP VIEW) 1 8 FLAG1 EN 2 7 FLAG2 GND 3 6 FLAG3 INV 4 5 TADJ MSOP-8 VCC 1 8 FLAG1 EN 2 7 FLAG2 GND 3 6 FLAG3 INV 4 5 TADJ UTDFN-1.5×1.5-8L PIN DESCRIPTION PIN NAME I/O FUNCTION 1 VCC I Input Supply. 2 EN I Precision Enable. 3 GND – Ground. 4 INV I Output Logic Invert. 5 TADJ O Timer Adjustment. 6 FLAG3 O Open-Drain Output 3. 7 FLAG2 O Open-Drain Output 2. 8 FLAG1 O Open-Drain Output 1. NOTE: I: input; O: output. SG Micro Corp www.sg-micro.com APRIL 2024 3 3-Rail Power Sequencer with Programmable Timing SGM822 ELECTRICAL CHARACTERISTICS (VCC = 3.3V, TJ = -40℃ to +125℃, typical values are measured at TJ = +25℃, unless otherwise noted.) PARAMETER Operating Quiescent Current SYMBOL IQ FLAGx Leakage Current IFLAG FLAGx Output Voltage Low VOL TADJ Source Current ITADJ_SRC TADJ Sink Current CONDITIONS MIN TYP MAX EN = H 30 55 EN = L 36 65 0.001 0.5 VFLAGx = 3.3V UNITS µA µA VFLAGx = 6.0V 1.0 IFLAGx = 1.2mA 0.3 V 15 µA 7 11 ITADJ_SNK 7 11 15 µA High Threshold Level VHTH 1.1 1.2 1.3 V Low Threshold Level VLTH 0.4 0.5 0.6 V 1.10 1.30 1.45 ms 10 Clock Cycles Clock Cycle Flag Delay Time tCLK 9 tD2, tD3, tD5, tD6 EN Pin Threshold VEN EN Pin Pull-Up Current IEN INV Pin VIH VIH_INV INV Pin VIL VIL_INV SG Micro Corp www.sg-micro.com CADJ = 10nF tD1, tD4 8 1.1 VEN = 0V 1.2 Clock Cycles 1.3 6.5 V µA 0.9 × VCC V 0.1 × VCC V APRIL 2024 4 3-Rail Power Sequencer with Programmable Timing SGM822 TYPICAL PERFORMANCE CHARACTERISTICS VCC = 3.3V, unless otherwise noted. Enable Threshold vs. Temperature 1.230 45 1.225 Enable Threshold (V) Operating Quiescent Current (μA) Operating Quiescent Current vs. Temperature 50 EN = L 40 35 30 EN = H 25 20 1.220 1.215 1.210 1.205 -50 -25 0 25 50 75 100 125 1.200 150 -50 -25 0 Temperature (℃) Delay Time vs. Temperature CADJ = 10nF Nominal Delay Time (ms) 10.8 10.7 10.6 10.5 -50 -25 0 25 50 75 100 125 45 150 40 35 30 150 EN = H 2.5 3 3.5 4 4.5 5 5.5 Supply Voltage (V) FLAG Voltage vs. Supply Voltage 1 CADJ = 10nF Nominal 10.53 0.8 10.51 0.6 VFLAG (V) Delay Time (ms) 125 EN = L Delay Time vs. Supply Voltage 10.49 10.47 10.45 100 50 Temperature (℃) 10.55 75 Operating Quiescent Current vs. Supply Voltage 10.9 10.4 50 55 Operating Quiescent Current (μA) 11.0 25 Temperature (℃) INV Low, RFLAG = 100kΩ 0.4 0.2 2.5 3 3.5 4 4.5 Supply Voltage (V) SG Micro Corp www.sg-micro.com 5 5.5 0 0 0.4 0.8 1.2 1.6 2 Supply Voltage (V) APRIL 2024 5 3-Rail Power Sequencer with Programmable Timing SGM822 TYPICAL PERFORMANCE CHARACTERISTICS (continued) VCC = 3.3V, unless otherwise noted. FLAG Voltage vs. FLAG Current 0.5 VFLAG (V) 0.4 0.3 VCC = 3.3V 0.2 VCC = 5V 0.1 0 0 1 2 3 4 5 IFLAG (mA) FUNCTIONAL BLOCK DIAGRAM VCC FLAG1 6.5μA + EN tD1 _ tD2 FLAG2 tD3 1.2V Timing Delay Generation tD4 Sequence Control tD5 TADJ Clock tD6 FLAG3 INV GND Figure 3. SGM822 Block Diagram SG Micro Corp www.sg-micro.com APRIL 2024 6 3-Rail Power Sequencer with Programmable Timing SGM822 DETAILED DESCRIPTION The SGM822 multivoltage power sequencer provides power-up and power-down control for up to three power supplies. Three output flags are connected to the enable or shutdown pins of the power supplies to control the operation. The delay time between each flag signals is programmed by the TADJ capacitor. These functions allow users to design a complex power system without the concern of large inrush currents or latch-up conditions that may cause the system abnormality or even damaged. The user can use the invert (INV) pin to reverse the logic of the flag outputs. The INV pin is not allowed to be floating. The following discussion assumes INV is held low so that the flag output is active high. Adjustable Timing An external timing capacitor is connected between the TADJ pin and ground that establishes the clock waveform. The SGM822 linearly charges or discharges this capacitor by a fixed current source/sink, denoted ITADJ_SRC/ITADJ_SNK, of magnitude 11µA between predefined threshold voltage levels, denoted VHTH and VLTH. Figure 4 shows the timing waveform. Once the capacitor voltage drops to VLTH, the chip reverses to charge again. With this method, the clock cycle is generated. asserted, the open-drain flags will be sequentially released. The first flag (FLAG1) is released after a fixed time period, denoted tD1 in Figure 5. This corresponds to least nine, maximum ten, clock cycles depending on where EN is asserted relative to the clock signal. After the release of the first flag, another timing procedure will begin to delay the release of the second flag (FLAG2). This timing procedure simultaneously begins when the timing capacitor starts charging. As a result, the delay time, denoted tD2, corresponds to exactly eight clock periods. Similarly, FLAG3 is released after the delay time, denoted tD3, again eight clock cycles, has expired. A 10nF TADJ capacitor generates typical delay time tD2 and tD3 of 10.4ms and tD1 of from 11.7ms to 13ms. The power-down sequence is the same as power-up, but in reverse order. When EN is pulled low, the third flag (FLAG3) is pulled low after the delay time, denoted tD4, has expired. The second and first flags will then follow in a sequential manner after the corresponding delay time. The delay time, denoted tD4, tD5, tD6, is equal to tD1, tD2, tD3, respectively. For robustness, the internal pull-down FET of each flag is designed to limit the sink current level so that it can sustain a short circuit to VCC for a short period. High Threshold Level, VHTH = 1.2V EN TADJ Low Threshold Level, VLTH = 0.5V FLAG1 tCLK Figure 4. TADJ Pin Timing Waveform The clock cycle period is directly proportional to the timing capacitor value. Considering the TADJ threshold voltage levels and the charge/discharge current magnitude, it can be shown that the timing capacitorclock period relationship is typically 130µs/nF. For example, a 10nF capacitor sets up a clock period of 1.3ms. FLAG2 FLAG3 TADJ tD1 tD2 tD3 9 Clock Cycles 8 Clock Cycles 8 Clock Cycles Figure 5. Power-Up Sequence, INV Low The flag outputs are controlled by the enable (EN) pin. After power-on, all the flags are held low until the precision EN voltage exceeds its threshold. After EN is SG Micro Corp www.sg-micro.com APRIL 2024 7 3-Rail Power Sequencer with Programmable Timing SGM822 DETAILED DESCRIPTION (continued) EN FLAG1 FLAG2 FLAG3 TADJ tD1 tD2 tD3 9 Clock Cycles 8 Clock Cycles 8 Clock Cycles Figure 6. Power-Up Sequence, INV High EN FLAG1 FLAG2 FLAG3 TADJ tD4 tD5 tD6 9 Clock Cycles 8 Clock Cycles 8 Clock Cycles Figure 7. Power-Down Sequence, INV Low EN FLAG1 FLAG2 FLAG3 TADJ tD4 tD5 tD6 9 Clock Cycles 8 Clock Cycles 8 Clock Cycles Figure 8. Power-Down Sequence, INV High SG Micro Corp www.sg-micro.com APRIL 2024 8 3-Rail Power Sequencer with Programmable Timing SGM822 DETAILED DESCRIPTION (continued) Enable Circuit  R  VCCENABLE= 1.2V ×  1 + EN1  - 6.5μA × REN1  REN2  The enable circuit is designed with an internal comparator, an accurate bandgap voltage (1.2V, TYP), to provide a precision enable threshold. With this precision enable function, the user can use an external capacitor to set the timing as shown in Figure 9. Input Supply (2.7V to 5.5V) REN1 VCC 6.5μA EN EN + CEN 1.2V (2) FLAG1 SGM822 Enable INV _ FLAG2 REN2 FLAG3 TADJ CADJ GND Figure 9. Precision Enable Circuit Using the internal current source to charge the external capacitor CEN, assuming EN is charging from 0V, the delay time can be calculated by the equation as follows. tENABLE _ DELAY = 1.2V × CEN 6.5μA (1) Figure 11. Enable Based On Input Supply Level The EN pin provides the glitch-free feature to make the system robust. The timer will start counting at the EN rising edge, but will always reset if EN is pulled low before FLAG1 is released. This is illustrated in Figure 12 with INV low. EN EN 1.2V FLAG1 0V tD1 tENABLE_DELAY Figure 10. Enable Delay Timing Alternatively, sequencing can be based on a certain event. For example, connect the power supply of SGM822 to EN pin through a resistor divider, as shown in Figure 11. After the VCC voltage exceeds the threshold voltage, the sequencing begins to execute. When calculating the VCC threshold voltage that triggers the sequencing event, take care of the effects of the internal EN pull-up current source. The supply voltage for which EN is asserted is given by: SG Micro Corp www.sg-micro.com Figure 12. Enable Glitch Timing, INV Low If EN is pulled low before the complete power-up sequence, the SGM822 will enter a controlled shutdown. Figure 13 describes the flag sequence if EN is pulled low after FLAG1 releases, but before the entire power-up sequence is completed. INV is assumed low. APRIL 2024 9 3-Rail Power Sequencer with Programmable Timing SGM822 DETAILED DESCRIPTION (continued) EN FLAG1 FLAG2 FLAG3 TADJ tD4 tD1 9 Clock Cycles < 8 Clock Cycles 9 Clock Cycles EN FLAG1 FLAG2 FLAG3 TADJ tD1 tD2 9 Clock Cycles 8 Clock Cycles < 8 Clock Cycles tD4 tD5 9 Clock Cycles 8 Clock Cycles Figure 13. Incomplete Sequence Timing, INV Low The Sequencing with EN Pin Control The timing sequence of the SGM822 is controlled by the enable (EN) pin. After power-on, all the flags are held low until the precision EN pin is pulled high. After EN is pulled high, the power-up sequence begins to execute. INV Pin Setting the Logic Output When the INV pin is tied to a logic low, the flag output is active high. When the INV pin is tied to a logic high, the flag output is active low. When EN is pulled low, the power-down sequence will execute. After the third flag (FLAG3) corresponding delay time expires, FLAG3 is pulled low. The second and first flags will then be pulled low after their appropriate delays. SG Micro Corp www.sg-micro.com APRIL 2024 10 3-Rail Power Sequencer with Programmable Timing SGM822 APPLICATION INFORMATION Pulling up Flag Pins to Independent Power Supply The SGM822 contains three open-drain output flags which need external pulled-up resistors, for example 100kΩ pull-up resistors. This part is designed to protect the flag output pins from damaging if these pins are shorted to VCC for a short period. For some application scenarios, the flag output voltage needs to be different from the VCC voltage. The separate flag power supply is used to pull up the open-drain outputs. With this method, each flag is pulled high to the required level of the controlled power supplies. The user must make sure the flag supply voltage is within the recommended operating range. Design Example In this example, the SGM822 is used to implement a power-up (1 - 2 - 3) and power-down (3 - 2 - 1) sequence of three power supplies. Design Requirements For this design example, use the parameters listed in Table 1. Design Procedure A timing capacitor of CADJ = 10nF generates typical delay time tD2 and tD3 of 10.4ms and tD1 of between 11.7ms and 13ms. Connect the INV pin to GND so that the output flags are active high. See Adjustable Timing for calculating the value for CADJ. 2.7V to 5.5V Supply VCC Enable Input R1 100kΩ EN SGM822 INV CADJ 10nF TADJ GND Flag Supply 0.1µF R2 100kΩ R3 100kΩ FLAG1 Flag 1 FLAG2 Flag 2 FLAG3 Flag 3 Figure 14. Sequencing Using Independent Flag Supply Table 1. Design Parameters Design Parameter Example Value Input Supply Voltage Range 2.7V to 5.5V Flag Output Voltage, EN high Input Supply Flag Output Voltage, EN low 0V Flag Timing Delay, tD1 11.7ms - 13ms Flag Timing Delay, tD2 and tD3 10.4ms Power-Up Sequence 1-2-3 Power-Down Sequence 3-2-1 Table 2. Evaluation Board Bill of Materials Ref Des Description Case Size Manufacturer Manufacturer P/N U1 SGM822 Sequencer MSOP-8/UTDFN-1.5×1.5-8L SGMICRO XXX R1 100kΩ 0603 Vishay Dale CRCW06031003F-e3 R2 100kΩ 0603 Vishay Dale CRCW06031003F-e3 R3 100kΩ 0603 Vishay Dale CRCW06031003F-e3 CADJ 10nF ±5% 50V C0G 0603 Murata GRM1885C1H103JA01D SG Micro Corp www.sg-micro.com APRIL 2024 11 3-Rail Power Sequencer with Programmable Timing SGM822 APPLICATION CURVES Power-Up Sequence Power-Down Sequence VCC = 5V, CADJ = 10nF VCC = 5V, CADJ = 10nF FLAG3 Time (4ms/div) Time (4ms/div) Power-Up Sequence Power-Down Sequence VCC = 5V, TADJ Open VCC = 5V, TADJ Open FLAG1 FLAG2 FLAG3 Time (20μs/div) EN 5V/div 5V/div 5V/div 5V/div 5V/div 5V/div 5V/div 5V/div EN 5V/div 5V/div 5V/div 5V/div FLAG2 5V/div FLAG3 FLAG1 5V/div FLAG2 EN 5V/div FLAG1 5V/div EN FLAG1 FLAG2 FLAG3 Time (20μs/div) LAYOUT GUIDELINES An input capacitor is not necessary but recommended to avoid the possible noise effect which might be present on the VCC pin. A 0.1μF ceramic capacitor may be placed as close as possible to the VCC pin. SG Micro Corp www.sg-micro.com Connect pull-up resistors between the flag output pins and a positive input supply (VCC or an independent flag supply). Minimal trace length is recommended to avoid the unexpected noise from the environment. A typical value for the pull-up resistors is 100kΩ. APRIL 2024 12 SGM822 3-Rail Power Sequencer with Programmable Timing REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. APRIL 2024 ‒ REV.A.1 to REV.A.2 Page Added UTDFN-1.5×1.5-8L package................................................................................................................................................................... All Changed Electrical Characteristics section .......................................................................................................................................................... 4 AUGUST 2020 ‒ REV.A to REV.A.1 Page Changed Absolute Maximum Ratings section ...................................................................................................................................................... 2 Changed Electrical Characteristics section .......................................................................................................................................................... 4 Changed Enable Circuit section......................................................................................................................................................................... 10 Changes from Original (JULY 2020) to REV.A Page Changed from product preview to production data ............................................................................................................................................. All SG Micro Corp www.sg-micro.com APRIL 2024 13 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS MSOP-8 b E1 E 4.8 1.02 e 0.41 0.65 RECOMMENDED LAND PATTERN (Unit: mm) D ccc C A SEATING PLANE A1 H A2 c L C Symbol θ Dimensions In Millimeters MIN MOD MAX A - - 1.100 A1 0.000 - 0.150 A2 0.750 - 0.950 b 0.220 - 0.380 c 0.080 - 0.230 D 2.800 - 3.200 E 2.800 - 3.200 E1 4.650 - 5.150 e L 0.650 BSC 0.400 H θ - 0.800 0.250 TYP 0° ccc - 8° 0.100 NOTES: 1. This drawing is subject to change without notice. 2. The dimensions do not include mold flashes, protrusions or gate burrs. 3. Reference JEDEC MO-187. SG Micro Corp www.sg-micro.com TX00014.001 PACKAGE INFORMATION PACKAGE OUTLINE DIMENSIONS UTDFN-1.5×1.5-8L e N5 N8 E2 k E1 D D2 D1 E3 N4 TOP VIEW N1 b L BOTTOM VIEW 0.40 1.2 1.10 0.7 A A1 A2 SIDE VIEW Symbol 0.25 Dimensions In Millimeters MIN MAX A 0.400 A1 0.000 A2 1.450 D1 0.600 D2 1.450 E1 1.100 E2 1.200 0.050 0.000 1.550 0.057 0.800 0.024 0.002 0.061 0.031 0.008 REF 1.550 0.057 1.300 0.043 0.061 0.051 0.002 REF 1.400 0.047 0.250 0.006 0.055 0.008 REF 0.400 BSC 0.150 0.020 0.005 REF 0.200 REF 0.150 e L 0.016 0.050 REF k b 0.500 0.200 REF E E3 Dimensions In Inches MIN MAX 0.127 REF D 0.45 0.010 0.016 BSC 0.250 0.006 0.010 NOTE: This drawing is subject to change without notice. SG Micro Corp www.sg-micro.com TX00130.000 PACKAGE INFORMATION TAPE AND REEL INFORMATION REEL DIMENSIONS TAPE DIMENSIONS P2 W P0 Q1 Q2 Q1 Q2 Q1 Q2 Q3 Q4 Q3 Q4 Q3 Q4 B0 Reel Diameter A0 P1 K0 Reel Width (W1) DIRECTION OF FEED NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF TAPE AND REEL Reel Diameter Reel Width W1 (mm) A0 (mm) B0 (mm) K0 (mm) P0 (mm) P1 (mm) P2 (mm) W (mm) Pin1 Quadrant MSOP-8 13″ 12.4 5.20 3.30 1.50 4.0 8.0 2.0 12.0 Q1 UTDFN-1.5×1.5-8L 7" 9.0 1.70 1.70 0.75 4.0 4.0 2.0 8.0 Q1 SG Micro Corp www.sg-micro.com TX10000.000 DD0001 Package Type PACKAGE INFORMATION CARTON BOX DIMENSIONS NOTE: The picture is only for reference. Please make the object as the standard. KEY PARAMETER LIST OF CARTON BOX Length (mm) Width (mm) Height (mm) Pizza/Carton 7″ (Option) 368 227 224 8 7″ 442 410 224 18 13″ 386 280 370 5 SG Micro Corp www.sg-micro.com DD0002 Reel Type TX20000.000
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