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Microchip Technology MIC23158YML-TR
- Part No.:
- MIC23158YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 20-VFQFN Exposed Pad, 20-MLF®
- Datasheet:
-
MIC23158YML-TR.pdf
- Description:
- IC REG BUCK ADJ 2A DL 20MLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC23158YML-TR from Microchip Technology is a dual-channel, 2A synchronous buck regulator with HyperLight Load® operation, adjustable output voltage down to 1.0V, 3 MHz PWM switching, and independent power-good indicators. It delivers up to 94% peak efficiency, features 45 µA quiescent current, and operates across –40°C to +125°C junction temperature in a compact 20-pin 3 mm × 4 mm QFN package-designed for space-constrained mobile processor core supplies.
For engineers reviewing the MIC23158YML-TR datasheet, MIC23158YML-TR pinout, MIC23158YML-TR application, or MIC23158YML-TR equivalent, this page provides verified technical context, validated pin functions, confirmed dual-output regulation behavior, real-world transient response data, and two rigorously cross-checked alternative parts for SSD, smartphone, and portable device power designs.
Technical Context
The MIC23158YML-TR implements a proprietary HyperLight Load® control architecture that dynamically transitions between discontinuous conduction mode (DCM) at light loads and continuous conduction mode (CCM) above ~180 mA per channel, maintaining high efficiency across 1 mA–2 A. Each channel integrates PMOS/NMOS synchronous switches with 0.20 Ω / 0.19 Ω RDS(ON), independent soft-start (300 µs typical), and output pre-bias safe startup.
It uses separate analog and power ground paths (AGND1/PGND1, AGND2/PGND2), dedicated sense inputs (SNS1/SNS2) for accurate output monitoring, and open-drain power-good outputs (PG1/PG2) with 92% rising threshold and 68 µs delay. The device lacks auto-discharge circuitry-distinguishing it from the MIC23159-and requires external resistor dividers on FB1/FB2 to set output voltages referencing an internal 0.62 V bandgap.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, USB, and 3.3 V/5 V rails without external LDO pre-regulation. |
| Output Current per Channel | 2 A continuous - enables direct powering of CPU cores, GPU, or DDR memory I/O rails in portable SoC systems. |
| Switching Frequency | 3 MHz fixed - allows use of sub-1 µH inductors (≥0.47 µH) and small ceramic output capacitors (≥2.2 µF), minimizing solution footprint. |
| Quiescent Current | 45 µA typical - sustains ultra-low standby power in always-on subsystems such as modem or sensor hubs. |
| Feedback Reference Voltage | 0.62 V ±1.25% - sets precise output voltage via external resistor divider; enables 1.0 V to 3.3 V adjustment range. |
| Power Good Threshold | 92% of nominal output - ensures reliable system reset sequencing with 7% hysteresis and 68 µs delay. |
| Junction Temperature Range | –40°C to +125°C - qualified for automotive infotainment, industrial handhelds, and ruggedized mobile computing. |
| Shutdown Current | 0.1 µA per channel - reduces battery drain during deep sleep modes in battery-powered devices. |
Pinout & Package
Package: 20-pin 3 mm × 4 mm QFN with exposed thermal pad (ePAD), RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Power Input Supply | High-current input for each buck stage; requires local 2.2 µF+ ceramic bypass capacitor to PGND. |
| SW1, SW2 | Switch Node Output | Drives external inductor; connects directly to internal PMOS/NMOS FETs; high dv/dt node requiring careful routing. |
| SNS1, SNS2 | Output Voltage Sense | High-impedance feedback path tied close to output capacitor; enables accurate regulation and pre-bias safe startup. |
| FB1, FB2 | Feedback Input | Connects to resistor divider from VOUT to GND; references internal 0.62 V reference to set output voltage. |
| EN1, EN2 | Enable Control | Logic-level input (0.4 V low / 1.2 V high); independently enables/disables each regulator; 0.1 µA shutdown current. |
| PG1, PG2 | Power Good Indicator | Open-drain output; pulled high externally to VOUT; asserts logic high when output reaches 92% of target. |
| SS1, SS2 | Soft-Start Timing | Capacitor-connected node (≥200 pF) controlling output ramp time (~300 µs with 470 pF); prevents inrush current. |
| PGND1, PGND2, AGND1, AGND2 | Ground Returns | Separate power (high-current) and analog (low-noise) grounds; must be joined at single point near ePAD for stability. |
| AVIN1, AVIN2 | Analog Supply Input | Bias supply for control circuitry; must be tied to corresponding VIN and decoupled with 1 µF ceramic capacitor. |
| ePAD | Thermal Pad | Exposed copper pad soldered to PCB ground plane; critical for thermal performance (θJA = 53°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Operation | Enables >83% efficiency at 1 mA while delivering ultra-fast load transient response (<10 µs recovery) without external compensation. |
| Independent Dual Regulation | Two fully isolated 2A buck channels with separate enable, soft-start, power-good, and feedback paths-supports asymmetric rail sequencing. |
| Integrated MOSFET Switches | Eliminates need for external high-side/low-side FETs; PMOS/NMOS pair achieves 0.20 Ω / 0.19 Ω RDS(ON) at 3.6 V AVIN. |
| Output Pre-Bias Safe Startup | Allows start-up into pre-charged output (e.g., hot-swap or backup rail); prevents reverse current flow through internal FETs. |
| Thermal & Current Protection | Includes cycle-by-cycle current limiting (2.2–4.3 A) and thermal shutdown at 160°C with 20°C hysteresis-no external components required. |
| Small Solution Size | Supports total height <1 mm using 0.47 µH inductor and 2.2 µF output capacitor; only seven external components per channel needed. |
Applications
| Solid State Drive (SSD) Power | Smartphone Application Processor Core |
|---|---|
|
Use Scenario: Supplies 1.0 V–1.2 V core voltage to NAND controller and DRAM interface in M.2/U.2 SSD modules. IC Role / Device Role / Timing Role: Dual-output synchronous buck regulator providing tightly regulated, low-noise, fast-transient power for burst-mode NAND access. Use Value: 94% peak efficiency and 45 µA quiescent current extend battery life in portable SSD enclosures; 3 MHz switching minimizes EMI near high-speed PCIe lanes. |
Use Scenario: Powers CPU/GPU cores in mid-tier smartphones with dynamic voltage scaling (DVS) requirements. IC Role / Device Role / Timing Role: Dual-channel DC/DC converter delivering independent, sequenced 1.1 V and 1.8 V rails with programmable soft-start timing. Use Value: Independent EN1/EN2 and PG1/PG2 signals enable precise power sequencing aligned with SoC boot requirements; HyperLight Load maintains efficiency during idle states. |
| Tablet PC Memory I/O Supply | Portable GPS Receiver RF/BB Power |
|
Use Scenario: Generates 1.8 V and 3.3 V rails for LPDDR4 I/O and display interface in 7–10 inch tablets. IC Role / Device Role / Timing Role: Dual buck regulator with separate SNS/PG pins ensuring stable voltage under rapid load changes from display refresh and touch polling. Use Value: 2A per channel handles peak DDR4 I/O currents; 3 MHz operation avoids interference with Wi-Fi/Bluetooth bands; small QFN saves board area near edge connectors. |
Use Scenario: Provides clean, low-noise 1.5 V and 2.5 V supplies to GPS baseband IC and RF front-end in handheld navigation devices. IC Role / Device Role / Timing Role: Dual synchronous buck with independent feedback loops isolating sensitive analog RF sections from digital BB noise. Use Value: Separate AGND/PGND routing and low 20 mVpp output ripple (typ.) prevent phase noise degradation in GPS L1-band reception; –40°C to +125°C rating ensures outdoor reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65217CIRSLR | Single 3.3 V fixed-output + dual adjustable (1.0–3.3 V); 1.5 A per channel; 2.5 MHz; integrated LDOs and fuel gauge. | Targets TI-based AM335x/AM437x tablets; includes PMIC features beyond buck regulation (RTC, battery charging). | Select when system requires integrated power management beyond dual buck-e.g., battery-backed RTC or charger control. |
| RTQ2134BGQW | Dual 3 A channels; 2.5 MHz; 20 µA IQ; supports forced-PWM mode; no HyperLight Load; QFN-24 (4×4 mm). | Better suited for higher-current, constant-load applications like industrial HMIs; lacks light-load optimization for portable standby. | Choose for applications needing >2 A/channel or forced-PWM stability over wide temperature ranges, where 45 µA IQ is less critical. |
Compared with MIC23158YML-TR, TPS65217CIRSLR adds system-level PMIC functionality at lower current per channel, while RTQ2134BGQW trades HyperLight Load efficiency for higher current capability and forced-PWM determinism-neither is pin-compatible, but both serve adjacent dual-buck use cases in portable electronics.
Availability
MIC23158YML-TR is available at Aetrix Electronics and suitable for solid state drives, smartphone application processors, and tablet PC memory I/O supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC23158YML-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
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog, and power management ICs, with emphasis on reliability, longevity, and industrial-grade qualification.
The MIC23158/9 product line was designed specifically for high-efficiency, space-constrained dual-rail power delivery in portable consumer electronics-emphasizing light-load efficiency, fast transient response, and minimal external component count.
FAQ
What is the key functional difference between MIC23158YML-TR and MIC23159?
The MIC23158YML-TR lacks the auto-discharge feature present in the MIC23159. Specifically, MIC23159 integrates a 225 Ω pull-down resistor between SNS2 and AGND2 that activates during shutdown to discharge the output capacitor; MIC23158YML-TR does not include this circuitry. Both share identical pinout, regulation architecture, and electrical specs otherwise. This distinction is critical for applications requiring controlled output discharge during power-down sequences.
Does MIC23158YML-TR support output voltages below 1.0 V?
No. The MIC23158YML-TR is specified for adjustable output voltages from 1.0 V to 3.3 V, based on its internal 0.62 V feedback reference and minimum resistor divider ratio constraints. Attempting to set outputs below 1.0 V violates the device's guaranteed operating range and may result in regulation failure or instability. For sub-1.0 V applications, alternate regulators with lower reference voltages (e.g., 0.5 V or 0.6 V) must be selected.
Can MIC23158YML-TR operate with only one channel enabled?
Yes. MIC23158YML-TR supports independent channel operation: EN1 and EN2 can be controlled separately, allowing Channel 1 to remain active while Channel 2 is disabled (and vice versa). When disabled, each channel draws only 0.1 µA shutdown current and disconnects its output without affecting the other channel's regulation, sequencing, or power-good status.
What is the minimum recommended output capacitance for MIC23158YML-TR?
The minimum recommended output capacitance for MIC23158YML-TR is 2.2 µF ceramic per channel, as specified in the datasheet for stable operation and acceptable ripple performance. Using less than 2.2 µF risks violating loop stability margins, increasing output voltage ripple beyond specification, and degrading transient response-particularly under 2 A load steps. X5R or X7R dielectrics are strongly recommended for temperature stability.
Is MIC23158YML-TR pin-compatible with earlier Micrel MIC23158 versions?
Yes. MIC23158YML-TR is a drop-in replacement for legacy Micrel MIC23158 variants (e.g., MIC23158-YML) in the same 20-pin QFN package. Pin assignments, electrical specifications, thermal characteristics, and functional behavior-including HyperLight Load operation, soft-start timing, and power-good thresholds-are identical. No PCB layout or firmware changes are required for migration.
MIC23158YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 20-VFQFN Exposed Pad, 20-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 3.3V
- 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:
- 20-MLF® (3x4)
MIC23158YML-TR FAQ
1.How can I place an order for MIC23158YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23158YML-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 MIC23158YML-TR reliable?
The price and inventory of MIC23158YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23158YML-TR is usually 5 days.
3.What payment methods are accepted for MIC23158YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23158YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23158YML-TR?
MIC23158YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23158YML-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 MIC23158YML-TR?
For technical support, including MIC23158YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23158YML-TR requirements.
6.How does Aetrix verify that MIC23158YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC23158YML-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 MIC23158YML-TR meets industry standards.
7.What is the process for return or replacement of MIC23158YML-TR?
All MIC23158YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23158YML-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 MIC23158YML-TR part is unused and in its original packaging.
Return procedure for MIC23158YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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