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Microchip Technology MIC23164YMT-T5
- Part No.:
- MIC23164YMT-T5
- Manufacturer:
- Microchip Technology
- Package:
- 10-UFDFN Exposed Pad
- Datasheet:
-
MIC23164YMT-T5.pdf
- Description:
- IC REG BUCK ADJ 2A 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:213
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Product details
Overview
MIC23164YMT-T5 from Micrel is a 4MHz, 2A synchronous buck regulator with HyperLight Load® mode, 100% duty cycle capability, active output discharge (180Ω FET), and Power Good indicator - designed for space-constrained mobile processor core supplies requiring ultra-fast transient response and high light-load efficiency.
For engineers reviewing the MIC23164YMT-T5 datasheet, MIC23164YMT-T5 pinout, MIC23164YMT-T5 application, or MIC23164YMT-T5 equivalent, this page delivers verified electrical parameters, validated DFN-10 pin functions, confirmed thermal and efficiency behavior across –40°C to +125°C, and real-world alternative selection guidance for portable power design.
Technical Context
The MIC23164YMT-T5 implements a proprietary HyperLight Load® control architecture combining minimum-on-time pulse-frequency modulation (PFM) at light loads (<120mA) with fixed 4MHz PWM operation in continuous conduction mode (CCM), enabling >85% efficiency at 1mA and up to 93% peak efficiency at 2A. Its 100% duty cycle supports dropout operation down to VIN ≈ VOUT.
It integrates fully synchronous PMOS/NMOS power switches, features an active-discharge function via internal 180Ω pull-down on SW when disabled, and uses a 0.7V internal reference with external resistor divider feedback for adjustable output voltage (0.7V–VIN). The device includes thermal shutdown, current-limit protection, and a dedicated open-drain Power Good (PG) output with 85–95% rising threshold.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion and dual-cell alkaline inputs without pre-regulation. |
| Output Current | 2A continuous - sufficient for modern application processors and RF modules in handheld devices. |
| Switching Frequency | 4MHz nominal in CCM - enables use of ultra-small 0.47µH inductors and compact 10µF ceramic output capacitors. |
| Quiescent Current | 33µA typical - minimizes battery drain during standby in always-on subsystems. |
| Efficiency @ 1mA | 85% typical - critical for maintaining runtime in low-power sensor or modem sleep states. |
| Power Good Threshold | 90% of regulated output voltage (rising edge) - provides reliable system reset sequencing and rail monitoring. |
| Active Discharge | 180Ω internal FET on SW pin - ensures rapid, controlled output discharge upon disable, preventing hold-up voltage issues. |
| Junction Temp Range | –40°C to +125°C - qualified for automotive infotainment and industrial portable equipment environments. |
Pinout & Package
Package: 10-pin 2.0mm × 2.0mm Thin DFN (MT) with exposed thermal pad (ePad), RoHS-compliant and halogen-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - SW | Switch Node | Internal PMOS/NMOS drain connection; carries high di/dt switching current; requires tight layout to PGND and minimal parasitic inductance. |
| 2 - EN | Enable Input | Logic-level control (0.5–1.2V turn-on); must be actively driven - not floating; pulls down internally when inactive. |
| 3 - FB | Feedback Input | Connects to resistor divider from VOUT to GND; regulates output to 0.7V reference; sets adjustable VOUT = 0.7V × (1 + R1/R2). |
| 4 - NC | No Connect | Not internally bonded; leave unconnected and unpopulated on PCB. |
| 5 - PG | Power Good Output | Open-drain signal; requires external pull-up (≥5kΩ) to VOUT; asserts logic high when VOUT ≥ 90% of target. |
| 6 - SS | Soft-Start Control | Capacitor-to-ground sets ramp time (~600µs with 1nF); prevents inrush current and output overshoot at startup. |
| 7 - AGND | Analog Ground | Reference ground for control circuitry; must connect to central star ground point shared with CIN/COUT/PGND. |
| 8 - AVIN | Analog Input Supply | Bypassed with capacitor to AGND; powers internal bias and regulation circuits - separate from power path. |
| 9 - PVIN | Power Input Supply | Main input for MOSFETs; requires low-ESR 2.2µF+ ceramic cap directly to PGND; handles high di/dt ripple current. |
| 10 - PGND | Power Ground | High-current return path for PVIN, SW, and output capacitor; must be low-inductance, solid copper pour tied to ePad. |
| ePad | Thermal Pad | Internally connected to PGND; mandatory for thermal performance and EMI reduction - must be soldered to PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Mode | Enables PFM operation below ~120mA load, delivering 85% efficiency at 1mA while maintaining ultra-fast transient response. |
| 100% Duty Cycle Operation | Allows VIN as low as VOUT + dropout losses, extending usable battery life in deep discharge conditions. |
| Integrated Active Discharge | 180Ω NMOS switch on SW pin discharges output within milliseconds after disable - eliminates need for external discharge circuitry. |
| Programmable Soft-Start | External capacitor on SS pin controls output ramp rate, preventing inrush current and ensuring clean power-up sequencing. |
| Power Good Indicator | Dedicated open-drain PG pin with precise 90% rising threshold enables reliable system-level power monitoring and reset coordination. |
| Thermal & Current Protection | Includes foldback current limit and thermal shutdown at 160°C with 20°C hysteresis - ensures robust operation under fault conditions. |
Applications
| Cellular Modems | Mobile Handsets |
|---|---|
Use Scenario: Powering LTE/WCDMA baseband processor cores requiring fast load transients during burst data transmission. IC Role / Device Role / Timing Role: Primary core supply regulator with 4MHz switching and HyperLight Load® for dynamic voltage scaling between active/idle states. Use Value: Maintains stable 1.2V core rail under 10A/µs load steps while achieving >80% efficiency at 50mA idle current. |
Use Scenario: Delivering adjustable core voltage (e.g., 1.0–1.3V) to application processors in smartphones during camera capture or video playback. IC Role / Device Role / Timing Role: Synchronous buck converter with active discharge to prevent residual voltage on core rail during rapid power cycling. Use Value: 180Ω SW pull-down reduces output decay time to <500µs, enabling sub-millisecond power state transitions. |
| Portable GPS Devices | WiFi/WiMax Modules |
Use Scenario: Supplying 3.3V I/O and 1.8V RF section in handheld navigation units with intermittent satellite lock activity. IC Role / Device Role / Timing Role: Dual-rail support via external feedback dividers; PG signal synchronizes GPS receiver enable timing. Use Value: 33µA quiescent current extends battery life during long periods of cold-start waiting without compromising wake-up latency. |
Use Scenario: Regulating 1.2V core and 3.3V PHY rails in embedded WiFi modules operating in low-duty-cycle IoT gateways. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete DC/DC + discharge FET + PG comparator combinations. Use Value: Reduces BOM count by 4 components and saves >12mm² board area versus legacy 3mm × 3mm solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | 2.25MHz max frequency, no integrated active discharge, 3.6V max VIN, 1.8A rated output. | Lacks 100% duty cycle and SW discharge; requires external discharge circuit for fast rail collapse. | Preferred where lower EMI is prioritized over smallest size and full dropout operation. |
| RT8059GJ6 | 3MHz switching, 2A rating, integrated discharge (150Ω), but only 5.5V max VIN and no PG output. | Missing Power Good signal limits use in systems requiring strict power sequencing or fault reporting. | Valid for cost-sensitive designs where PG is omitted and thermal margin allows 150Ω vs. 180Ω discharge resistance. |
Compared with TPS62260DRVR and RT8059GJ6, the MIC23164YMT-T5 uniquely combines 4MHz operation, 100% duty cycle, integrated 180Ω discharge, and PG output in a 2mm × 2mm footprint - making it optimal for next-gen portable SoC core supplies demanding minimal height and precise rail control.
Availability
MIC23164YMT-T5 is available at Aetrix Electronics and suitable for cellular modems, mobile handsets, and portable navigation devices requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across temperature and production lots.
Supply support for MIC23164YMT-T5 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 analog and mixed-signal semiconductor company headquartered in San Jose, CA, acquired by Microchip Technology in 2015. It specialized in high-efficiency power management, timing, and interface ICs for portable and industrial markets.
The MIC23164YMT-T5 belongs to Micrel's HyperLight Load® buck regulator product line, engineered specifically for ultra-compact, battery-powered applications where light-load efficiency, fast transient response, and minimal solution size are critical design constraints.
FAQ
What is the maximum output current capability of the MIC23164YMT-T5?
The MIC23164YMT-T5 is rated for 2A continuous output current under specified thermal conditions (θJA = 90°C/W, TJ ≤ +125°C). Its current limit is typically 2.5A, with peak capability up to 3.3A depending on input voltage and ambient conditions. Derating is required above 85°C ambient or with limited PCB copper area.
Does the MIC23164YMT-T5 support 100% duty cycle operation, and what is its practical benefit?
Yes, the MIC23164YMT-T5 supports true 100% duty cycle operation, allowing VIN to drop as low as the regulated output voltage plus small conduction losses. This extends usable battery life in single-cell Li-ion systems by enabling regulation down to ~2.8V for a 2.7V output, delaying system shutdown during deep discharge.
How does the active discharge feature of the MIC23164YMT-T5 work, and what is its resistance value?
The MIC23164YMT-T5 incorporates an internal 180Ω NMOS FET connected between the SW pin and PGND, activated automatically when EN is low. This provides controlled, rapid discharge of the output capacitor - reducing VOUT to <100mV in under 500µs - eliminating need for external discharge components and improving system power-state reliability.
What is the feedback reference voltage and accuracy of the MIC23164YMT-T5?
The MIC23164YMT-T5 uses a precision 0.70V ±2.5% internal reference voltage at the FB pin. Output voltage is set via external resistor divider: VOUT = 0.7V × (1 + R1/R2). This allows programmable outputs from 0.7V to VIN, with typical line/load regulation of ≤0.3% across full operating range.
Can the MIC23164YMT-T5 operate with a 0.47µH inductor and 10µF output capacitor as stated in the datasheet?
Yes - the MIC23164YMT-T5 is fully characterized and optimized for use with a 0.47µH shielded inductor and 10µF X5R/X7R ceramic output capacitor. This combination achieves stable regulation, <15mVpp output ripple, and optimal transient response while fitting within a total solution height under 1mm.
MIC23164YMT-T5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 10-UFDFN Exposed Pad
- 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):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TDFN (2x2)
MIC23164YMT-T5 FAQ
1.How can I place an order for MIC23164YMT-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23164YMT-T5 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 MIC23164YMT-T5 reliable?
The price and inventory of MIC23164YMT-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23164YMT-T5 is usually 5 days.
3.What payment methods are accepted for MIC23164YMT-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23164YMT-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23164YMT-T5?
MIC23164YMT-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23164YMT-T5 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 MIC23164YMT-T5?
For technical support, including MIC23164YMT-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23164YMT-T5 requirements.
6.How does Aetrix verify that MIC23164YMT-T5 is sourced from the original manufacturer or authorized distributors?
All MIC23164YMT-T5 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 MIC23164YMT-T5 meets industry standards.
7.What is the process for return or replacement of MIC23164YMT-T5?
All MIC23164YMT-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC23164YMT-T5, 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 MIC23164YMT-T5 part is unused and in its original packaging.
Return procedure for MIC23164YMT-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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