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Microchip Technology MIC33163YGJ-TR
- Part No.:
- MIC33163YGJ-TR
- Manufacturer:
- Microchip Technology
- Package:
- 20-PowerTFQFN
- Datasheet:
-
MIC33163YGJ-TR.pdf
- Description:
- IC REG BUCK ADJ 1A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,355
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Product details
Overview
MIC33163YGJ-TR from Micrel is a 4MHz synchronous buck regulator with integrated inductor and HyperLight Load® mode, delivering up to 1A output current, 0.7V–5V adjustable output voltage, and 93% peak efficiency. It operates from 2.7V–5.5V input, supports 100% duty cycle for ultra-low dropout, and targets space-constrained portable and SSD power rails.
For engineers reviewing the MIC33163YGJ-TR datasheet, MIC33163YGJ-TR pinout, MIC33163YGJ-TR application, or MIC33163YGJ-TR equivalent, key selection criteria include its 2.5mm × 3.0mm QFN package, 33µA quiescent current, 0.1µA shutdown current, HyperLight Load® operation down to 1mA, and integrated inductor eliminating external magnetics.
Technical Context
The MIC33163YGJ-TR implements a proprietary HyperLight Load® (HLL) control architecture combining minimum on-/off-time pulse-frequency modulation at light loads (<220mA) and fixed 4MHz PWM in continuous conduction mode above that threshold. Its integrated PMOS/NMOS power stage enables synchronous rectification and 100% duty cycle operation.
This architecture delivers ultra-fast transient response and low output ripple across the full 0–1A load range using only a 22µF ceramic output capacitor. The device includes internal soft-start (programmable via SS pin), power-good (PG) open-drain indicator, under-voltage lockout (2.53V turn-on), and thermal shutdown (160°C).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 4MHz nominal in PWM mode; enables compact filter design and high PSRR at RF frequencies. |
| Output Current | 1A maximum continuous; sufficient for core logic, memory, and I/O rails in portable systems. |
| Input Voltage Range | 2.7V to 5.5V; compatible with single-cell Li-ion, USB 5V, and 3.3V/5V system rails. |
| Quiescent Current | 33µA typical; minimizes battery drain during standby in always-on subsystems. |
| Shutdown Current | 0.1µA typical; enables deep-sleep power gating without external switches. |
| Feedback Reference | 0.7V ±1.5% over temperature; sets precise output voltage via resistor divider (e.g., 1.8V @ R1=340kΩ/R2=215kΩ). |
| Efficiency | 85% at 1mA, 93% peak at 1A; maintains high conversion efficiency across three decades of load current. |
Pinout & Package
Package: 20-pin, 2.5mm × 3.0mm × 1.1mm QFN (GJ), RoHS-compliant, halogen-free, matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN (Pins 1, 20) | Power Input Voltage | High-current input for MOSFET switches; requires local 2.2µF+ ceramic decoupling to PGND. |
| PGND (Pins 2, 8, 9) | Power Ground | Low-impedance return path for switching currents; must be isolated from AGND to minimize noise coupling. |
| SW (Pins 3–7) | Switch Node | Internal MOSFET output connecting to integrated inductor; high dv/dt node requiring minimal trace area. |
| VOUT (Pins 10–13) | Regulated Output | Inductor output terminal; connects directly to 22µF ceramic capacitor and load; rated for 1A DC. |
| AGND (Pin 14) | Analog Ground | Reference ground for feedback, soft-start, and control circuitry; ties to central star point with CIN/COUT/PGND. |
| AVIN (Pin 15) | Analog Supply | Bias supply for control loop; must be tied to PVIN with dedicated 1µF local decoupling. |
| SS (Pin 16) | Soft-Start | Programs output ramp time (e.g., ~575µs with 1nF); prevents inrush and overshoot during startup. |
| PG (Pin 17) | Power Good | Open-drain status flag asserting high when VOUT ≥90% of target; requires external pull-up to VOUT. |
| FB (Pin 18) | Feedback Input | Senses output via resistor divider; regulates to internal 0.7V reference for 0.7V–5V programmable output. |
| EN (Pin 19) | Enable Input | Logic-level control: high ≥0.8V enables regulation; low ≤0.5V disables with 0.1µA shutdown current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor + MOSFETs | Eliminates external magnetics and discrete FETs, reducing solution size to 4.6mm × 7mm total footprint. |
| HyperLight Load® Mode | Proprietary PFM control maintains >85% efficiency at 1mA while enabling sub-µs load transient recovery. |
| 100% Duty Cycle Operation | Extends usable input range down to VOUT + (IOUT × RDSON + DCR), critical for battery end-of-life runtime. |
| Low-Radiated EMI | Meets EN55022 Class B limits without shielding or ferrites due to monolithic integration and optimized layout. |
| Configurable Soft-Start | External capacitor (1nF typical) sets monotonic VOUT ramp, supporting pre-biased output startup. |
Applications
| 5V Point-of-Load (POL) | SSD Storage Systems |
|---|---|
Use Scenario: Local 3.3V or 1.8V rail generation from 5V motherboard supply in M.2 or U.2 SSD modules. IC Role / Device Role / Timing Role: Primary DC-DC step-down regulator providing stable, low-noise core voltage for NAND flash controllers and DRAM buffers. Use Value: Integrated inductor eliminates layout-sensitive external components, while 4MHz switching allows tiny 22µF output capacitance and fast transient response to burst read/write loads. | Use Scenario: Power management for embedded controller and interface logic in consumer-grade solid-state drives. IC Role / Device Role / Timing Role: Adjustable-output buck converter supplying configurable I/O and core voltages under dynamic workload conditions. Use Value: HyperLight Load® mode sustains >85% efficiency during idle/standby states, extending host system battery life without compromising active performance. |
| Digital Cameras | Portable Devices |
Use Scenario: Image sensor and ISP core voltage regulation in compact digital cameras with tight PCB area constraints. IC Role / Device Role / Timing Role: High-efficiency, low-profile power supply delivering clean 1.2V–2.8V rails with minimal thermal rise during video capture. Use Value: 2.5mm × 3.0mm QFN package and 1.1mm height enable placement beneath camera modules; 0.1µA shutdown current preserves battery charge during long standby periods. | Use Scenario: System-level voltage regulation for Bluetooth/Wi-Fi SoCs, touch controllers, and sensors in wearables and handhelds. IC Role / Device Role / Timing Role: Compact, low-quiescent-current buck regulator powering always-on subsystems from single-cell Li-ion batteries. Use Value: 100% duty cycle operation extends usable battery range down to ~2.8V for 3.3V outputs, while 33µA IQ minimizes self-discharge during sleep modes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2155GQ-Z | 4MHz, 1A, integrated inductor; 2.5V–5.5V input; 0.6V–5V output; 25µA IQ; no HLL mode - uses forced PWM. | Lacks HyperLight Load®; less efficient below 10mA; higher light-load ripple. | Prefer MP2155GQ-Z where forced-PWM timing predictability outweighs light-load efficiency. |
| TPS628651RQYR | 4MHz, 1.5A, integrated inductor; 2.7V–5.5V input; 0.4V–3.6V output; 18µA IQ; DCS-Control™ for fast transient response. | Higher current rating, lower IQ, narrower output range; no 100% duty cycle support. | Choose TPS628651RQYR when >1A peak load or <20µA IQ is required, and 100% duty cycle is not needed. |
Compared with MP2155GQ-Z and TPS628651RQYR, the MIC33163YGJ-TR uniquely combines HyperLight Load® efficiency at microamp loads, 100% duty cycle for battery longevity, and a 0.7V–5V output range - making it optimal for space-constrained, battery-sensitive applications where light-load efficiency and wide VOUT adjustability are critical.
Availability
MIC33163YGJ-TR is available at Aetrix Electronics and suitable for 5V point-of-load (POL), SSD storage systems, and portable devices requiring stable component supply, consistent parametric performance, and long-term production continuity.
Supply support for MIC33163YGJ-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Micrel Inc. was a U.S.-based semiconductor company specializing in high-performance analog, power, timing, and communications ICs before its acquisition by Microchip Technology in 2015.
The MIC33163/4 family was designed specifically for ultra-compact, high-efficiency DC-DC conversion in portable and space-constrained electronics, emphasizing integrated magnetics, low IQ, and adaptive light-load control.
FAQ
What is the maximum output current capability of the MIC33163YGJ-TR?
The MIC33163YGJ-TR delivers up to 1A of continuous output current across its operating junction temperature range of –40°C to +125°C. This rating assumes proper PCB thermal design with adequate copper pour on PGND pins and ambient temperatures ≤85°C. Derating applies above 85°C ambient per the "Maximum Output Current vs. Temperature" curve in the datasheet.
Does the MIC33163YGJ-TR support 100% duty cycle operation, and why does it matter?
Yes, the MIC33163YGJ-TR supports true 100% duty cycle operation, allowing the high-side MOSFET to remain fully on when input voltage approaches the output voltage. This feature is essential for battery-powered applications, as it extends usable runtime by maintaining regulation down to VIN ≈ VOUT + (IOUT × RDSON + DCR), minimizing dropout loss near end-of-discharge.
How does HyperLight Load® mode improve efficiency at light loads in the MIC33163YGJ-TR?
HyperLight Load® mode uses Micrel's proprietary minimum on-/off-time PFM control to reduce switching activity only when needed. At loads below ~220mA, the MIC33163YGJ-TR enters discontinuous conduction mode, achieving 85% efficiency at 1mA - far exceeding standard PWM regulators - while maintaining ultra-fast transient response and low output ripple.
What external components are required for basic operation of the MIC33163YGJ-TR?
The MIC33163YGJ-TR requires only five external components for full functionality: a 2.2µF input capacitor (PVIN-to-PGND), a 22µF output capacitor (VOUT-to-PGND), two feedback resistors (FB-to-VOUT and FB-to-PGND), a soft-start capacitor (SS-to-PGND), and a pull-up resistor on the PG pin. No external inductor, diode, or compensation network is needed due to full integration.
Is the MIC33163YGJ-TR pin-compatible with the MIC33164YGJ-TR?
No, the MIC33163YGJ-TR and MIC33164YGJ-TR share identical pinout and package but differ functionally: MIC33164YGJ-TR adds an internal 180Ω pull-down on the SW pin for automatic output discharge during shutdown, while MIC33163YGJ-TR omits this feature. They are not drop-in replacements - system-level validation is required if swapping due to differing discharge behavior.
MIC33163YGJ-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 20-PowerTFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 1A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (2.5x3)
MIC33163YGJ-TR FAQ
1.How can I place an order for MIC33163YGJ-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC33163YGJ-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MIC33163YGJ-TR reliable?
The price and inventory of MIC33163YGJ-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC33163YGJ-TR is usually 5 days.
3.What payment methods are accepted for MIC33163YGJ-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC33163YGJ-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC33163YGJ-TR?
MIC33163YGJ-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC33163YGJ-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MIC33163YGJ-TR?
For technical support, including MIC33163YGJ-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC33163YGJ-TR requirements.
6.How does Aetrix verify that MIC33163YGJ-TR is sourced from the original manufacturer or authorized distributors?
All MIC33163YGJ-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MIC33163YGJ-TR meets industry standards.
7.What is the process for return or replacement of MIC33163YGJ-TR?
All MIC33163YGJ-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC33163YGJ-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MIC33163YGJ-TR part is unused and in its original packaging.
Return procedure for MIC33163YGJ-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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