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MIC4680YM-TR

MIC4680YM-TR

  • 厂商:

    ACTEL(微芯科技)

  • 封装:

    SOIC8_150MIL

  • 描述:

    IC REG BUCK BOOST ADJ 1.3A 8SOIC

  • 数据手册
  • 价格&库存
MIC4680YM-TR 数据手册
MIC4680 1A 200 kHz SuperSwitcher™ Buck Regulator Features General Description • • • • • • The MIC4680 SuperSwitcher™ is an easy-to-use fixed or adjustable output voltage step-down (buck) switch-mode voltage regulator. The 200 kHz MIC4680 achieves up to 1.3A of continuous output current over a wide input range in a 8-lead SOIC. • • • • • SOIC-8 Package with Up to 1.3A Output Current All Surface Mount Solution Only Four External Components Required Fixed 200 kHz Operation 3.3V, 5V, and Adjustable Output Versions Internally Compensated with Fast Transient Response Wide 4V to 34V Operating Input Voltage Range Less than 2 µA Typical Shutdown Mode Current Up to 90% Efficiency Thermal Shutdown Overcurrent Protection Applications • Simple 1A High-Efficiency Step-Down Regulator • Replacement TO-220 and TO-263 Designs • Efficient Pre-Regulator (5V to 2.5V, 12V to 3.3V, etc.) • On-Card Switching Regulators • Positive-to-Negative Converter (Inverting Buck-Boost) • Simple Battery Charger • Negative Boost Converter • Higher Output Current Regulator using External FET  2021 Microchip Technology Inc. and its subsidiaries The MIC4680 is available in 3.3V and 5V fixed output versions or adjustable output down to 1.25V. The MIC4680 has an input voltage range of 4V to 34V, with excellent line, load, and transient response. The regulator performs cycle-by-cycle current limiting and thermal shutdown for protection under fault conditions. In shutdown mode, the regulator draws less than 2 μA of standby current. The MIC4680 SuperSwitcher regulator requires a minimum number of external components and can operate using a standard series of inductors and capacitors. Frequency compensation is provided internally for fast transient response and ease of use. Package Type MIC4680 8-Lead SOIC (M) (Top View) SHDN 1 8 GND IN 2 7 GND SW 3 6 GND FB 4 5 GND DS20006623A-page 1 MIC4680 Typical Application Circuits Fixed Regulator Circuit MIC4680-3.3YM +6V to +34V C1 15μF 35V SHUTDOWN 2 1 ENABLE IN SHDN SW 3 FB 4 L1 C2 220μF 16V D1 B260A or SS26 GND Power SOIC-8 3.3V/1A 68μH 5–8 Adjustable Regulator Circuit +5V to +34V C1 15μF 35V SHUTDOWN ENABLE Power SOIC-8 2 1 MIC4680YM IN SW SHDN FB GND 5–8 L1 3 2.5V/1A 68μH R1 3.01k 4 D1 B260A or SS26 C2 220μF 16V R2 2.94k Functional Block Diagrams Adjustable Version Fixed Version V IN VIN IN SHDN IN SHDN Internal Regulator 200kHz Oscillator Thermal Shutdown Current Limit Internal Regulator 200kHz Oscillator Thermal Shutdown VOUT = VREF R1 = R2 Current Limit R1 + 1) ( R2 ( VVOUT - 1) REF VREF = 1.23V Comparator SW Driver Reset VOUT Comparator VOUT SW Driver 1A Switch COUT Reset 1A Switch COUT FB R1 FB Error Amp 1.23V Bandgap Reference MIC4680-x.x Error Amp 1.23V Bandgap Reference R2 MIC4680 [adj.] GND DS20006623A-page 2  2021 Microchip Technology Inc. and its subsidiaries MIC4680 1.0 ELECTRICAL CHARACTERISTICS Absolute Maximum Ratings † Supply Voltage (VIN; Note 1) .....................................................................................................................................+38V Shutdown Voltage (VSHDN) ........................................................................................................................ –0.3V to +38V Steady-State Output Switch Voltage (VSW).................................................................................................................–1V Feedback Voltage (Adjustable Version; VFB) ............................................................................................................+12V ESD Rating ............................................................................................................................................................ Note 2 Operating Ratings ‡ Supply Voltage (VIN; Note 3) ......................................................................................................................... +4V to +34V † Notice: Stresses above those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operational sections of this specification is not intended. Exposure to maximum rating conditions for extended periods may affect device reliability. ‡ Notice: The device is not guaranteed to function outside its operating rating. Note 1: Absolute maximum rating is intended for voltage transients only, prolonged DC operation is not recommended. 2: Devices are ESD sensitive. Handling precautions are recommended. 3: VIN(MIN) = VOUT + 2.5V or 4V, whichever is greater. ELECTRICAL CHARACTERISTICS Electrical Characteristics: VIN = 12V; ILOAD = 500 mA; TJ = +25°C, bold values valid for –40°C to +125°C, unless noted. (Note 1) Parameter Symbol Min. Typ. Max. Units Conditions 1.217 1.230 1.243 1.205 — 1.255 1.193 1.230 1.267 1.180 — 1.280 93 97 — % VFB = 1.0V — 50 500 µA VIN = 34V, VSHDN = 5V, VSW = 0V — 4 20 mA VIN = 34V, VSHDN = 5V, VSW = –1V — 7 12 mA VFB = 1.5V 3.266 3.3 3.333 3.201 — 3.399 3.168 3.3 3.432 3.135 — 3.465 93 97 — % VFB = 2.5V — 50 500 µA VIN = 34V, VSHDN = 5V, VSW = 0V — 4 20 mA VIN = 34V, VSHDN = 5V, VSW = –1V MIC4680 Adjustable Voltage Version Feedback Voltage Maximum Duty Cycle VFB DCMAX Output Leakage Current IOZ Quiescent Current IQ ±1% V ±1% 8V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A, VOUT = 5V MIC4680-3.3 Output Voltage Maximum Duty Cycle Output Leakage Current Note 1: VOUT DCMAX IOZ ±1% V ±3% 6V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A Test at TA = +85°C, ensured by design, and characterized to TJ = +125°C.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 3 MIC4680 ELECTRICAL CHARACTERISTICS (CONTINUED) Electrical Characteristics: VIN = 12V; ILOAD = 500 mA; TJ = +25°C, bold values valid for –40°C to +125°C, unless noted. (Note 1) Parameter Symbol Min. Typ. Max. Units IQ — 7 12 mA 4.950 5.0 5.05 4.85 — 5.15 4.800 5.0 5.200 4.750 — 5.250 93 97 — % VFB = 4.0V — 50 500 µA VIN = 34V, VSHDN = 5V, VSW = 0V — 4 20 mA VIN = 34V, VSHDN = 5V, VSW = –1V Quiescent Current Conditions VFB = 4.0V MIC4680-5.0 Output Voltage VOUT Maximum Duty Cycle DCMAX ±1% V ±3% 8V ≤ VIN ≤ 34V, 0.1A ≤ ILOAD ≤ 1A Output Leakage Current IOZ Quiescent Current IQ — 7 12 mA VFB = 6.0V Frequency Fold Back — 30 50 100 kHz — Oscillator Frequency fOSC 180 200 220 kHz — Saturation Voltage VSAT — 1.4 1.8 V IOUT = 1A Short-Circuit Current Limit ISC 1.3 1.8 2.5 A VFB = 0V, see Figure 1-1 Standby Quiescent Current ISTBY — 1.5 — µA VSHDN = VIN — 30 100 µA VSHDN = 5V (regulator off) Shutdown Input Logic Level VSHDN 2 1.6 — — 1.0 0.8 Shutdown Input Current ISHDN –10 –0.5 10 –10 –1.5 10 Thermal Shutdown TSHDN — 160 — MIC4680-3.3 and MIC4680-5.0 Note 1: V µA °C Regulator off Regulator on VSHDN = 5V (regulator off) VSHDN = 0V (regulator on) — Test at TA = +85°C, ensured by design, and characterized to TJ = +125°C. Test Circuit +12V SHUTDOWN ENABLE Device Under Test 2 IN 1 SHDN SW 3 FB 4 68μH I GND SOIC-8 FIGURE 1-1: DS20006623A-page 4 5–8 Current Limit Test Circuit.  2021 Microchip Technology Inc. and its subsidiaries MIC4680 Shutdown Input Behavior OFF ON 0.8V 0V FIGURE 1-2: 2V 1V 1.6V VIN(max) Shutdown Hysteresis. TEMPERATURE SPECIFICATIONS Parameters Sym. Min. Typ. Max. Units Conditions Maximum Junction Temperature Range TJ(MAX) –40 — +125 °C — Operating Temperature Range TJ –40 — +125 °C — Storage Temperature Range TS –65 — +150 °C — θJA — 63 — °C/W — Temperature Ranges Package Thermal Resistance Thermal Resistance, SOIC 8-Lead Note 1: The maximum allowable power dissipation is a function of ambient temperature, the maximum allowable junction temperature and the thermal resistance from junction to air (i.e., TA, TJ, JA). Exceeding the maximum allowable power dissipation will cause the device operating junction temperature to exceed the maximum rating. Sustained junction temperatures above that maximum can impact device reliability.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 5 MIC4680 2.0 Note: TYPICAL OPERATING CHARACTERISTICS The graphs and tables provided following this note are a statistical summary based on a limited number of samples and are provided for informational purposes only. The performance characteristics listed herein are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified operating range (e.g., outside specified power supply range) and therefore outside the warranted range. 4.0 IOUT = 1.0A 5.05 5.04 5.03 5.02 5.01 5.00 4.99 4.98 4.97 4.96 3.0 2.5 2.0 1.5 1.0 0.5 0 5 FIGURE 2-1: 10 15 20 25 30 INPUT VOLTAGE (V) 0 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) 35 FIGURE 2-4: Temperature. Line Regulation. OUTPUT VOLTAGE (V) OUTPUT VOLTAGE (V) VIN = 12V VOUT = 5V 5.02 5.00 4.98 0 4 3 2 1 VIN = 12V 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 OUTPUT CURRENT (A) FIGURE 2-5: Load Regulation. Current Limit Characteristic. 202 100 201 FREQUENCY (kHz) 80 CURRENT (μA) 5 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT CURRENT (A) FIGURE 2-2: 60 40 20 0 Shutdown Current vs. 6 5.04 4.96 VIN = 12V VSHDN = VIN 3.5 CURRENT (μA) OUTPUT VOLTAGE (V) 5.06 200 199 198 197 0 5 FIGURE 2-3: Voltage. DS20006623A-page 6 10 15 20 25 30 INPUT VOLTAGE (V) 35 Shutdown Current vs. Input 196 FIGURE 2-6: Voltage. 0 5 10 15 20 25 30 SUPPLY VOLTAGE (V) 35 Frequency vs. Supply  2021 Microchip Technology Inc. and its subsidiaries MIC4680 80 220 EFFICIENCY (%) FREQUENCY (kHz) 70 210 200 190 60 24V 6V 12V 50 40 30 20 10 180 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) FIGURE 2-7: Frequency vs. Temperature. 0 FIGURE 2-10: 1.236 1.234 1.232 VIN = 12V VOUT = 5V IOUT = 1A 1.230 EFFICIENCY (%) FEEDBACK VOLTAGE (V) 80 1.238 Feedback Voltage vs. 0.2 VIN = 12V VOUT = 5V ILOAD = 1A 0 -50 -25 0 25 50 75 100 125 TEMPERATURE (°C) FIGURE 2-9: Temperature. Saturation Voltage vs.  2021 Microchip Technology Inc. and its subsidiaries 24V 50 40 30 20 0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT CURRENT (A) EFFICIENCY (%) SATURATION VOLTAGE (V) 0.8 12V FIGURE 2-11: 1.4 1.0 7V 60 0 1.6 1.2 70 10 1.228 -50 -25 0 25 50 75 100 125 150 TEMPERATURE (°C) 0.4 3.3V Output Efficiency. 90 1.240 0.6 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT CURRENT (A) 1.242 FIGURE 2-8: Temperature. 0 100 90 80 70 60 5V Output Efficiency. 15V 24V 50 40 30 20 10 0 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 OUTPUT CURRENT (A) FIGURE 2-12: 12V Output Efficiency. DS20006623A-page 7 MIC4680 1.5 Minimum Current Limit 1.4 1.3 1.2 Note OUTPUT CURRENT (A) 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 VOUT = 5V TA = 60°C Demonstration board layout 0.3 0.2 0.1 0 0 5 FIGURE 2-13: Safe Operating Area. FIGURE 2-14: Foldback. Switching Frequency 2.1 10 15 20 25 INPUT VOLTAGE (V) 30 FIGURE 2-15: 35 Load Transient. Frequency Foldback The MIC4680 folds the switching frequency back during a hard short-circuit condition to reduce the energy per cycle and protect the device. DS20006623A-page 8  2021 Microchip Technology Inc. and its subsidiaries MIC4680 2.2 Bode Plots The following bode plots show that the MIC4680 is stable over all conditions using a 68 μF inductor (L) and a 220 μF output capacitor (COUT). To ensure stability, it is a good practice to maintain a phase margin of greater than 35°. FIGURE 2-16: Margin = 106°. No-Load Stability, Phase FIGURE 2-19: Margin = 69°. Full-Load Stability, Phase FIGURE 2-17: Margin = 114°. Full-Load Stability, Phase FIGURE 2-20: Margin = 125°. No-Load Stability, Phase FIGURE 2-18: Margin = 117°. No-Load Stability, Phase FIGURE 2-21: Margin = 71°. Full-Load Stability, Phase  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 9 MIC4680 3.0 PIN DESCRIPTIONS The descriptions of the pins are listed in Table 3-1. TABLE 3-1: PIN FUNCTION TABLE Pin Number Pin Name Description 1 SHDN 2 VIN Supply Voltage (Input): Unregulated +4V to +34V supply voltage. 3 SW Switch (Output): Emitter of NPN output switch. Connect to external storage inductor and Schottky diode. 4 FB Feedback (Input): Connect to output on fixed output voltage versions, or to 1.23V tap of voltage-divider network for adjustable version. 5, 6, 7, 8 GND DS20006623A-page 10 Shutdown (Input): Logic low enables regulator. Logic high (>1.6V) shuts down regulator. Ground.  2021 Microchip Technology Inc. and its subsidiaries MIC4680 4.0 FUNCTIONAL DESCRIPTION The MIC4680 is a variable duty cycle switch-mode regulator with an internal power switch. Refer to the Functional Block Diagrams. 4.1 Supply Voltage The MIC4680 operates from a +4V to +34V unregulated input. Highest efficiency operation is from a supply voltage around +15V. See Figure 2-10 through Figure 2-12. 4.2 Enable/Shutdown The shutdown (SHDN) input is TTL compatible. Ground the input if unused. A logic low enables the regulator. A logic high shuts down the internal regulator which reduces the current to typically 1.5 μA when VSHDN = VIN = 12V and 30 μA when VSHDN = 5V. See Figure 1-2. 4.3 Feedback Fixed-voltage versions of the regulator have an internal resistive divider from the feedback (FB) pin. Connect FB directly to the output voltage. Adjustable versions require an external resistive voltage divider from the output voltage to ground, center tapped to the FB pin. See Table 5-1 for recommended resistor values. 4.4 4.5 Output Switching When the internal switch is on, an increasing current flows from the supply VIN, through external storage inductor L1, to output capacitor COUT and the load. Energy is stored in the inductor as the current increases with time. When the internal switch is turned off, the collapse of the magnetic field in L1 forces current to flow through fast recovery diode D1, charging COUT. 4.6 Output Capacitor External output capacitor COUT provides stabilization and reduces ripple. See the Bode Plots for additional information. 4.7 Return Paths During the ON portion of the cycle, the output capacitor and load currents return to the supply ground. During the OFF portion of the cycle, current is being supplied to the output capacitor and load by storage inductor L1, which means that D1 is part of the high-current return path. Duty Cycle Control A fixed-gain error amplifier compares the feedback signal with a 1.23V bandgap voltage reference. The resulting error amplifier output voltage is compared to a 200 kHz sawtooth waveform to produce a voltage-controlled variable duty cycle output. A higher feedback voltage increases the error amplifier output voltage. A higher error amplifier voltage (comparator inverting input) causes the comparator to detect only the peaks of the sawtooth, reducing the duty cycle of the comparator output. A lower feedback voltage increases the duty cycle. The MIC4680 uses a voltage mode control architecture.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 11 MIC4680 5.0 APPLICATIONS INFORMATION 5.1 Adjustable Regulators V IN Adjustable regulators require a 1.23V feedback signal. Recommended voltage-divider resistor values for common output voltages are included in Table 5-1. 2 MIC4680YM IN SW R1 CIN SHUTDOWN ENABLE 1 SHDN FB GND For other voltages, the resistor values can be determined using the following formulas. VOUT L1 3 4 COUT D1 R2 5–8 EQUATION 5-1: R1 V OUT = V REF   ------- + 1  R2  EQUATION 5-2: V OUT  R1 = R2   ------------–1 V  REF R1 R2 = --------------------------------------V OUT  V REF – 1 Where: VREF = 1.23V TABLE 5-1: VOUT R1 RECOMMENDED COMPONENTS FOR COMMON OUTPUT VOLTAGES 12 R21 2 1.8V 3.01 kΩ 6.495 kΩ 2.5V 3.01 kΩ 2.915 kΩ 3.3V 3.01 kΩ 1.788 kΩ 5.0V 3.01 kΩ 982Ω 6.0V 3.01 kΩ 776Ω Note 1: 2: 3: CIN 15 μF 35V T495X156K035ATE 200 D1 L1 2A 60V Schottky B260A Vishay-Diode, Inc or SS26 General Semiconductor COUT 68 μH 1.5A Coiltronics UP2B-680 or 220 μF 10V Sumida T495X227K010ATE CDRH125-680MC3 060 or Sumida CDRH124-680MC3 All resistors 1%. Nearest available resistor values. Shielded magnetics for low-RFI applications. DS20006623A-page 12  2021 Microchip Technology Inc. and its subsidiaries MIC4680 5.2 Thermal Considerations The MIC4680 SuperSwitcher features the power SOIC-8. This package has a standard 8-pin small-outline package profile but with much higher power dissipation than a standard SOIC-8. The MIC4680 SuperSwitcher is the first DC-to-DC converter to take full advantage of this package. The reason that the power SOIC-8 has higher power dissipation (lower thermal resistance) is that pins 5 though 8 and the die-attach paddle are a single piece of metal. The die is attached to the paddle with thermally conductive adhesive. This provides a low thermal resistance path from the junction of the die to the ground pins. This design significantly improves package power dissipation by allowing excellent heat transfer through the ground leads to the printed circuit board. One of the limitation of the maximum output current on any MIC4680 design is the junction-to-ambient thermal resistance (θJA) of the design (package and ground plane).Examining θJA in more detail: EQUATION 5-3:  JA =  JC +  CA Where: θJC = Junction-to-case thermal resistance. θCA = Case-to-ambient thermal resistance. SOIC-8 JA JC FIGURE 5-1: Section. 5.3.2 Power SOIC-8 Cross MINIMUM COPPER/MAXIMUM CURRENT METHOD Using Figure 5-2, for a given input voltage range, determine the minimum ground-plane heat-sink area required for the application’s maximum output current. Figure 5-2 assumes a constant die temperature of 75°C above ambient. 1.5 θJA is ideally 63°C/W but will vary depending on the size of the ground plane to which the power SOIC-8 is attached. 5.3 Determining Ground-Plane Heat-Sink Area There are two methods of determining the minimum ground plane area required by the MIC4680. 5.3.1 QUICK METHOD OUTPUT CURRENT (I) θCA is dependent on layout and is primarily governed by the connection of pins 5 though 8 to the ground plane. The purpose of the ground plane is to function as a heat sink. Ground Plane Sink Area AM Heat BIE NT Printed Circuit Board 8V θJC is a relatively constant 20°C/W for a power SOIC-8. CA 1.0 12V 24V 34V TA = 50°C 0.5 Minimum Current Limit = 1.3A 0 0 5 10 15 20 25 AREA (cm 2) FIGURE 5-2: Plane Area. Output Current vs. Ground When designing with the MIC4680, it is a good practice to connect pins 5 through 8 to the largest ground plane that is practical for the specific design. Make sure that MIC4680 pins 5 though 8 are connected to a ground plane with a minimum area of 6cm2. This ground plane should be as close to the MIC4680 as possible. The area maybe distributed in any shape around the package or on any PCB layer as long as there is good thermal contact to pins 5 though 8. This ground plane area is more than sufficient for most designs.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 13 MIC4680 5.4 Checking the Maximum Junction Temperature For this example, with an output power (POUT) of 5W, (5V output at 1A maximum with VIN = 12V) and 65°C maximum ambient temperature, what is the maximum junction temperature? Referring to Figure 2-11, read the efficiency (η) for 1A output current at VIN = 12V or perform you own measurement. η = 79% 5.5 Increasing the Maximum Output Current The maximum output current at high input voltages can be increased for a given board layout. The additional three components shown in Figure 5-3 will reduce the overall loss in the MIC4680 by about 20% at high VIN and high IOUT. Even higher output current can be achieved by using the MIC4680 to switch an external FET. See Figure 5-7 for a 5A supply with current limiting. The efficiency is used to determine how much of the output power (POUT) is dissipated in the regulator circuit (PD). MIC4680YM IN SW EQUATION 5-4: 3 D1 1N4148 SHDN P OUT – P OUT P D = ------------ FB 2.2nF GND 5 6 7 8 5W P D = ---------- – 5W = 1.33W 0.79 Calculate the worst-case junction temperature: FIGURE 5-3: Increasing Maximum Output Current at High Input Voltages. EQUATION 5-5: 5.6 Where: TJ = Junction temperature. PD(IC) = The MIC4680 power dissipation. θJC = Junction-to-case thermal resistance (approx. 20°C/W for the MIC4680). TC = Pin temperature measurement taken at the entry point of pin 6 or 7 into the plastic package at the ambient temperature at which TC is measured. TA = Ambient temperature at which TC is measured. TA(MAX) = Maximum ambient operating temperature for the specific design. Calculating the maximum junction temperature given a maximum ambient temperature of 65°C: Layout is very important when designing any switching regulator. Rapidly changing switching currents through the printed circuit board traces and stray inductance can generate voltage transients which can cause problems. To minimize stray inductance and ground loops, keep trace lengths, indicated by the heavy lines in Figure 5-4, as short as possible. For example, keep D1 close to Pin 3 and Pins 5 through 8, keep L1 away from sensitive node FB, and keep CIN close to Pin 2 and Pins 5 though 8. See Thermal Considerations for ground plane layout. The feedback pin should be kept as far way from the switching elements (usually L1 and D1) as possible. V IN +4V to +34V EQUATION 5-6: CIN T J = 1.064  20C/W +  45C – 25C  + 65C T J = 106.3C This value is less than the allowable maximum operating junction temperature of 125°C as listed in the Operating Ratings ‡. Typical thermal shutdown is 160°C and is listed in the Electrical Characteristics table. DS20006623A-page 14 MIC4680YM 2 IN SW 3 FB 4 L1 VOUT 68μH COUT 1 SHDN Power SOIC-8 D1 GND R1 R2 Load T J = P D  IC    JC +  T C – T A  + T A  MAX  Layout Considerations 5 6 7 8 GND FIGURE 5-4: Critical Traces for Layout.  2021 Microchip Technology Inc. and its subsidiaries MIC4680 5.7 Application Circuits J1 +34V max. MIC4680YM FIGURE 5-5: Constant Current and Constant Voltage Battery Charger. MIC4680YM FIGURE 5-6: +12V to –12V/150 mA Buck-Boost Converter. +4.5V to +17V U1 MIC4680YM MIC4417YM4 2 1 IN SHDN SW 3 FB 4 Si4425DY 3.3V/5A GND SOIC-8 5–8 * I SAT = 8A GND FIGURE 5-7: 5V to 3.3V/5A Power Supply.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 15 MIC4680 6.0 PACKAGING INFORMATION 6.1 Package Marking Information 8-Lead SOIC* Example (Fixed) XXXX -X.XXX WNNN 8-Lead SOIC* 4680 -3.3YM 8217 Example (Adjustable) XXX XXXXXX WNNN Legend: XX...X Y YY WW NNN e3 * MIC 4680YM 7128 Product code or customer-specific information Year code (last digit of calendar year) Year code (last 2 digits of calendar year) Week code (week of January 1 is week ‘01’) Alphanumeric traceability code Pb-free JEDEC® designator for Matte Tin (Sn) This package is Pb-free. The Pb-free JEDEC designator ( e3 ) can be found on the outer packaging for this package. ●, ▲, ▼ Pin one index is identified by a dot, delta up, or delta down (triangle mark). Note: In the event the full Microchip part number cannot be marked on one line, it will be carried over to the next line, thus limiting the number of available characters for customer-specific information. Package may or may not include the corporate logo. Underbar (_) and/or Overbar (‾) symbol may not be to scale. DS20006623A-page 16  2021 Microchip Technology Inc. and its subsidiaries MIC4680 8-Lead SOIC Package Outline and Recommended Land Pattern Note: For the most current package drawings, please see the Microchip Packaging Specification located at http://www.microchip.com/packaging.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 17 MIC4680 NOTES: DS20006623A-page 18  2021 Microchip Technology Inc. and its subsidiaries MIC4680 APPENDIX A: REVISION HISTORY Revision A (November 2021) • Converted Micrel document MIC4680 to Microchip data sheet template DS20006623A. • Minor grammatical text changes throughout.  2021 Microchip Technology Inc. and its subsidiaries DS20006623A-page 19 MIC4680 NOTES: DS20006623A-page 20  2021 Microchip Technology Inc. and its subsidiaries MIC4680 PRODUCT IDENTIFICATION SYSTEM To order or obtain information, e.g., on pricing or delivery, contact your local Microchip representative or sales office. Device -X.X X X -XX Part No. Output Voltage Temperature Range Package Media Type Device: MIC4680: 1A 200 kHz SuperSwitcher™ Buck Regulator Output Voltage: = Adjustable 3.3 = 3.3V 5.0 = 5.0V Temperature Range: Y = –40°C to +125°C Package: M = 8-Lead SOIC Media Type: = 95/Tube TR = 2,500/Reel Examples: a) MIC4680YM: MIC4680, Adjustable Output Voltage, –40°C to +125°C Temp. Range, 8-Lead SOIC, 95/Tube b) MIC4680-3.3YM-TR: MIC4608, 3.3V Output Voltage, –40°C to +125°C Temp. Range, 8-Lead SOIC, 2,500/Reel c) MIC4680-5.0YM-TR: MIC4680, 5.0V Output Voltage, –40°C to +125°C Temp. Range, 8-Lead SOIC, 2,500/Reel Note 1:  2021 Microchip Technology Inc. and its subsidiaries Tape and Reel identifier only appears in the catalog part number description. This identifier is used for ordering purposes and is not printed on the device package. Check with your Microchip Sales Office for package availability with the Tape and Reel option. DS20006623A-page 21 MIC4680 NOTES: DS20006623A-page 22  2021 Microchip Technology Inc. and its subsidiaries Note the following details of the code protection feature on Microchip products: • Microchip products meet the specifications contained in their particular Microchip Data Sheet. • Microchip believes that its family of products is secure when used in the intended manner, within operating specifications, and under normal conditions. • Microchip values and aggressively protects its intellectual property rights. Attempts to breach the code protection features of Microchip product is strictly prohibited and may violate the Digital Millennium Copyright Act. • Neither Microchip nor any other semiconductor manufacturer can guarantee the security of its code. Code protection does not mean that we are guaranteeing the product is “unbreakable”. Code protection is constantly evolving. Microchip is committed to continuously improving the code protection features of our products. This publication and the information herein may be used only with Microchip products, including to design, test, and integrate Microchip products with your application. Use of this information in any other manner violates these terms. Information regarding device applications is provided only for your convenience and may be superseded by updates. It is your responsibility to ensure that your application meets with your specifications. Contact your local Microchip sales office for additional support or, obtain additional support at https:// www.microchip.com/en-us/support/design-help/client-supportservices. THIS INFORMATION IS PROVIDED BY MICROCHIP "AS IS". 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MIC4680YM-TR 价格&库存

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MIC4680YM-TR
  •  国内价格 香港价格
  • 1+26.199321+3.25002
  • 25+21.7764425+2.70136
  • 100+19.82916100+2.45980

库存:7048