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Microchip Technology MIC23155-GYMT-TR
- Part No.:
- MIC23155-GYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-UFDFN Exposed Pad, 10-TMLF®
- Datasheet:
-
MIC23155-GYMT-TR.pdf
- Description:
- IC REG BUCK 1.8V 2A 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,874
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Product details
Overview
MIC23155-GYMT-TR from Micrel is a 3MHz, 2A synchronous buck regulator with HyperLight Load® mode, power good output, and programmable soft start-designed for core voltage regulation in space-constrained portable electronics. It delivers fixed 1.8V output, achieves 94% peak efficiency at 2A, maintains ultra-low 22µA quiescent current, and operates across –40°C to +125°C junction temperature.
For engineers reviewing the MIC23155-GYMT-TR datasheet, MIC23155-GYMT-TR pinout, MIC23155-GYMT-TR application, or MIC23155-GYMT-TR equivalent, key selection criteria include light-load efficiency (85% @ 1mA), 3MHz PWM switching in CCM, active output discharge, and compatibility with 0.47µH inductors and 2.2µF ceramic output capacitors.
Technical Context
The MIC23155-GYMT-TR implements a proprietary HyperLight Load® control architecture that alternates between discontinuous conduction mode (DCM) at light loads and continuous conduction mode (CCM) above ~180mA, enabling both ultra-fast transient response and high efficiency across the full 0–2A load range. Its internal fully-integrated PMOS/NMOS synchronous switches eliminate external diode losses.
It features a 0.62V internal reference with ±2.5% output voltage accuracy (1.8V fixed), programmable soft-start via external capacitor (e.g., 470pF yields ~320µs ramp), and open-drain power good (PG) output with 91% rising threshold and 68µs delay-enabling precise system power sequencing and fault monitoring.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rail inputs without pre-regulation. |
| Output Voltage | Fixed 1.8V - factory-trimmed for processor core or memory I/O supply with ±2.5% accuracy over temp and line. |
| Max Output Current | 2A - sustained delivery with thermal shutdown protection at 160°C and 20°C hysteresis. |
| Switching Frequency | 3MHz - enables use of sub-1µH inductors and compact 2.2µF–4.7µF ceramic output capacitors. |
| Quiescent Current | 22µA - minimizes battery drain in standby, enabling >1000-hour runtime in always-on IoT sensors. |
| Power Good Threshold | 91% of VOUT (1.64V) - provides reliable enable/disable signaling for downstream logic and sequencers. |
| Shutdown Current | 0.01µA - ensures near-zero leakage during deep sleep or system off states. |
Pinout & Package
Package: 10-pin 2.5mm × 2.5mm Thin DFN with exposed ePAD (connected to PGND), RoHS-compliant NiPdAu finish, halogen-free mold compound.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SW | Switch Node | High-speed connection to inductor; carries pulsed 2A current and requires tight layout to minimize EMI. |
| 2 EN | Enable Input | Active-high logic control (1.2V min high, 0.5V max low); must not float-requires pull-down or host MCU drive. |
| 3 SNS | Output Sense / Discharge | Direct feedback path for regulation; internally discharges VOUT when EN = low via 165Ω NMOS. |
| 4 NC | No Connect | Not bonded-must remain unconnected per datasheet; no routing or copper fill required. |
| 5 PG | Power Good Output | Open-drain indicator requiring external pull-up (>5kΩ to VOUT); asserts high when VOUT ≥ 1.64V. |
| 6 SS | Soft-Start Control | Accepts external capacitor (e.g., 470pF) to set monotonic 320µs VOUT ramp and prevent inrush overshoot. |
| 7 AGND | Analog Ground | Reference return for FB/SNS/SS/PG circuits; must be isolated from PGND until single-point tie at ePAD. |
| 8,9 VIN | Input Supply | Dual pins reduce IR drop and thermal resistance; require local 2.2µF+ ceramic bypass to PGND. |
| 10 PGND | Power Ground | High-current return for SW and internal MOSFETs; connects directly to ePAD for optimal thermal dissipation. |
| ePAD | Exposed Thermal Pad | Electrically and thermally tied to PGND; mandatory for thermal performance (θJC = 63°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Mode | Proprietary DCM control delivering 85% efficiency at 1mA and ultra-fast load transients (<10µs recovery) without external compensation. |
| Integrated Power MOSFETs | Low RDS(ON) (0.20Ω PMOS / 0.19Ω NMOS) eliminates external FETs and gate drivers-reducing BOM count and layout complexity. |
| Active Output Discharge | Internal 165Ω NMOS pulls VOUT to ground within microseconds of EN deactivation-preventing floating rails and ensuring safe power-down sequencing. |
| Programmable Soft Start | External capacitor sets precise VOUT ramp time (e.g., 470pF → 320µs), eliminating need for external timers or RC networks. |
| Robust Protection Suite | Includes thermal shutdown (160°C), cycle-by-cycle current limit (2.2–3.3A), undervoltage lockout (2.55V typ), and ESD-hardened I/O (HBM 1.5kΩ/100pF). |
Applications
| Solid State Drives (SSD) | Smartphones |
|---|---|
Use Scenario: Regulating 1.8V NAND flash I/O voltage in M.2 and U.2 SSD modules with burst read/write workloads. IC Role / Device Role / Timing Role: Primary DC/DC converter supplying stable 1.8V to flash controller and memory interface under dynamic 0–2A load steps. Use Value: HyperLight Load® maintains >85% efficiency during idle periods, extending battery life in portable SSD enclosures. | Use Scenario: Powering application processor I/O domains in LTE/5G smartphones where board area is constrained below 10mm². IC Role / Device Role / Timing Role: Compact 2.5mm × 2.5mm buck regulator delivering 1.8V with fast transient response to handle CPU DVFS transitions. Use Value: 3MHz switching allows use of 0.47µH inductors and 2.2µF output caps-reducing total solution height to <1mm. |
| Tablet PCs | WiFi/WiMax Modules |
Use Scenario: Supplying 1.8V to baseband SoC peripherals (USB PHY, PCIe SerDes) in fanless tablet designs with thermal limits. IC Role / Device Role / Timing Role: High-efficiency point-of-load regulator with thermal shutdown and PG monitoring for system-level power management. Use Value: 94% peak efficiency at 2A and 63°C/W θJC enable operation up to +125°C junction without derating. | Use Scenario: Providing regulated 1.8V to RF front-end ICs and WiFi/BT combo chips in compact wireless access points and dongles. IC Role / Device Role / Timing Role: Low-noise, low-ripple power source with active discharge to meet strict RF spectral mask requirements during sleep/wake cycles. Use Value: Ultra-low output ripple (enabled by small ceramic caps and integrated switches) prevents LO pulling and EVM degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 3MHz, 3A, 2.7–6V input, adjustable only; no fixed 1.8V option; 17µA IQ; no active discharge. | Requires external resistor divider; lacks integrated discharge path-needs external MOSFET for safe power-down. | Choose when higher current headroom (3A) or wider input range (6V) is needed; accept added BOM and layout complexity. |
| RT8059ZSP | 2.5MHz, 2A, 2.5–5.5V input, fixed 1.8V option; 30µA IQ; includes active discharge; no PG output. | Missing power good signal-requires external supervisor IC for sequencing; slightly lower switching frequency limits min inductor size. | Choose when PG is not required and active discharge is critical; verify thermal performance with θJA = 100°C/W vs. MIC23155-GYMT-TR's 90°C/W. |
Compared with TPS62130ARGTR and RT8059ZSP, the MIC23155-GYMT-TR uniquely combines fixed 1.8V output, integrated power good, active discharge, and HyperLight Load® efficiency down to 1mA-all in a 2.5mm × 2.5mm footprint-making it optimal for space- and battery-life-sensitive portable applications where minimal external components are mandatory.
Availability
MIC23155-GYMT-TR is available at Aetrix Electronics and suitable for solid state drives (SSD), smartphones, and WiFi/WiMax modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC23155-GYMT-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 analog and mixed-signal semiconductor company founded in 1978 and acquired by Microchip Technology in 2015; known for high-performance power management and timing solutions.
The MIC23155-GYMT-TR belongs to Micrel's HyperLight Load® buck regulator family, engineered specifically for ultra-compact, battery-powered portable electronics demanding high light-load efficiency, fast transient response, and minimal external component count.
FAQ
What is the output voltage of the MIC23155-GYMT-TR?
The MIC23155-GYMT-TR is a fixed-output buck regulator delivering 1.8V with ±2.5% accuracy over temperature and line conditions. This value is factory-trimmed and does not require external feedback resistors-unlike the adjustable MIC23155YMT variant which uses the FB pin and a resistor divider.
Does the MIC23155-GYMT-TR include power good functionality?
Yes, the MIC23155-GYMT-TR features an open-drain power good (PG) output on Pin 5. It asserts high when the output voltage reaches 91% of nominal (1.64V for 1.8V output) with 68µs delay and 7% hysteresis, providing reliable sequencing and fault indication for downstream systems.
What is the minimum inductor value supported by the MIC23155-GYMT-TR?
The MIC23155-GYMT-TR is designed to operate with inductors as small as 0.47µH. Using this value optimizes transient response, while larger values (up to 2.2µH) reduce output ripple-enabling flexible trade-offs between dynamic performance and noise in compact layouts.
How does the MIC23155-GYMT-TR achieve high efficiency at light loads?
The MIC23155-GYMT-TR uses Micrel's proprietary HyperLight Load® mode-a discontinuous conduction control scheme that pulses only when needed. This reduces switching losses dramatically, achieving 85% efficiency at 1mA while maintaining ultra-fast transient recovery-critical for burst-mode portable workloads.
Is the MIC23155-GYMT-TR compatible with ceramic output capacitors smaller than 4.7µF?
Yes-the MIC23155-GYMT-TR is explicitly characterized for use with ceramic output capacitors as small as 2.2µF. Its low output ripple and stable regulation with small caps stem from integrated MOSFETs, HyperLight Load® control, and optimized loop compensation-enabling total solution heights under 1mm.
MIC23155-GYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 10-UFDFN Exposed Pad, 10-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Current - Output:
- 2A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TMLF® (2.5x2.5)
MIC23155-GYMT-TR FAQ
1.How can I place an order for MIC23155-GYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23155-GYMT-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 MIC23155-GYMT-TR reliable?
The price and inventory of MIC23155-GYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23155-GYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC23155-GYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23155-GYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23155-GYMT-TR?
MIC23155-GYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23155-GYMT-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 MIC23155-GYMT-TR?
For technical support, including MIC23155-GYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23155-GYMT-TR requirements.
6.How does Aetrix verify that MIC23155-GYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23155-GYMT-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 MIC23155-GYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC23155-GYMT-TR?
All MIC23155-GYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23155-GYMT-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 MIC23155-GYMT-TR part is unused and in its original packaging.
Return procedure for MIC23155-GYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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