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Microchip Technology MIC23158YML-T5
- Part No.:
- MIC23158YML-T5
- Manufacturer:
- Microchip Technology
- Package:
- 20-VFQFN Exposed Pad, 20-MLF®
- Datasheet:
-
MIC23158YML-T5.pdf
- Description:
- IC REG BUCK ADJ 2A DL 20MLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,732
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Product details
Overview
MIC23158YML-T5 from Microchip Technology is a dual-channel, 2A synchronous buck regulator with HyperLight Load® mode, operating from 2.7V to 5.5V input and delivering adjustable output voltages down to 1.0V per channel. It integrates fully synchronous MOSFETs, independent soft-start and power-good indicators, and achieves 94% peak efficiency at 3 MHz PWM switching - optimized for processor core rail supply in space-constrained portable electronics.
For engineers reviewing the MIC23158YML-T5 datasheet, MIC23158YML-T5 pinout, MIC23158YML-T5 application, or MIC23158YML-T5 equivalent, key selection criteria include its dual 2A output capability, 45 µA quiescent current, –40°C to +125°C junction temperature range, QFN-20 (3 mm × 4 mm) package, and HyperLight Load® architecture enabling ultra-fast transient response with low-output-ripple operation using minimal external components.
Technical Context
The MIC23158YML-T5 implements a proprietary HyperLight Load® control scheme combining fixed minimum-on-time and variable-off-time operation to maintain high light-load efficiency and rapid load-step response. Each channel operates independently with dedicated feedback (FB1/FB2), sense (SNS1/SNS2), enable (EN1/EN2), soft-start (SS1/SS2), and power-good (PG1/PG2) pins.
It uses internal PMOS/NMOS synchronous switches with RDS(ON) of 0.20 Ω (PMOS) and 0.19 Ω (NMOS), supports CCM and HLL modes, and features undervoltage lockout (2.55 V typ), thermal shutdown (160°C), and current-limit protection (4.3 A typ). The device requires no external compensation and is pre-bias safe.
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 system rails without pre-regulation. |
| Output Current per Channel | 2 A continuous - sufficient for CPU/GPU core, memory I/O, or FPGA auxiliary rails in portable devices. |
| Switching Frequency | 3 MHz - enables use of sub-1 µH inductors (≥0.47 µH) and small ceramic output capacitors (≥2.2 µF), minimizing solution footprint. |
| Quiescent Current | 45 µA - extends battery life in always-on subsystems such as modem or sensor hubs. |
| Peak Efficiency | 94% in CCM - reduces thermal load and improves power density in thermally constrained layouts. |
| Feedback Reference Voltage | 0.62 V ±1.3% - sets precise output voltage via resistor divider; enables 1.0 V to 3.3 V adjustment range. |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
Package: 20-pin QFN (3 mm × 4 mm, ML variant), exposed thermal pad (ePAD) connected to PGND for enhanced thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1, VIN2 | Power Input Supply | High-current inputs for each buck stage; require local 2.2 µF+ ceramic bypass near PGND1/PGND2. |
| SW1, SW2 | Switch Node Output | Direct connection to inductor; carries high di/dt switching current - must be routed short and away from sensitive analog traces. |
| SNS1, SNS2 | Output Voltage Sense | High-accuracy Kelvin sensing point; connects directly to output capacitor anode to reject PCB IR drop and ensure regulation stability. |
| FB1, FB2 | Feedback Input | Connects to resistor divider from VOUT to GND; internal 0.62 V reference enables precise output programming. |
| EN1, EN2 | Enable Control | Logic-level inputs (0.4 V low / 1.2 V high); support independent sequencing and dynamic power gating per rail. |
| PG1, PG2 | Power-Good Indicator | Open-drain outputs asserting high when VOUT ≥92% of target - used for system power sequencing and fault monitoring. |
| SS1, SS2 | Soft-Start Timing | Capacitor-connected nodes setting ramp time (~300 µs with 470 pF); prevent inrush current and overshoot during startup. |
| AGND1, AGND2 | Analog Ground Reference | Separate ground return for control circuitry; must be tied to central star ground point, isolated from high-current PGND loops. |
| PGND1, PGND2 | Power Ground Return | Low-impedance return path for switch currents; requires solid copper pour under ePAD and direct connection to ePAD. |
| AVIN1, AVIN2 | Analog Supply Input | Bias supply for error amplifiers and reference; must be tied to respective VIN and decoupled with 1 µF ceramic capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Mode | Enables >83% efficiency at 1 mA while maintaining ultra-fast transient response (<10 µs recovery) - critical for burst-mode processor loads. |
| Independent Dual Regulation | Two fully isolated buck channels with separate EN, SS, PG, FB, and SNS pins - supports asymmetric rail sequencing and independent fault management. |
| Output Pre-Bias Safe Operation | Allows startup into pre-charged output without reverse current or latch-up - essential for hot-swap and multi-rail power-up scenarios. |
| Integrated MOSFET Switches | Eliminates need for external high-side/low-side FETs and gate drivers - reduces BOM count, layout complexity, and total solution height (<1 mm). |
| Thermal & Current Protection | Includes cycle-by-cycle current limiting (4.3 A typ) and thermal shutdown (160°C) with 20°C hysteresis - ensures robust operation under overload or poor heatsinking. |
Applications
| Solid State Drives (SSD) | Smartphones |
|---|---|
Use Scenario: Powering NAND flash controller and DRAM cache rails in M.2/U.2 SSD modules. IC Role / Device Role / Timing Role: Dual 2A synchronous buck regulator supplying 1.2 V core and 1.8 V I/O rails with independent sequencing and power-good monitoring. Use Value: Enables compact, low-profile power solution meeting JEDEC MO-220 thermal and size constraints while sustaining >90% efficiency across 10 µA–2 A load range. | Use Scenario: Delivering core voltage to application processor (e.g., ARM Cortex-A series) and GPU in flagship smartphone platforms. IC Role / Device Role / Timing Role: Primary core rail regulator with HyperLight Load® mode supporting dynamic voltage scaling (DVS) and deep-sleep states. Use Value: Achieves 45 µA quiescent current and <10 µs transient recovery - extending standby battery life and preventing brownout during CPU wake-up bursts. |
| Tablet PCs | WiFi/WiMax Applications |
Use Scenario: Supplying SoC core, DDR memory termination, and display interface rails in 7–10 inch tablets. IC Role / Device Role / Timing Role: Dual-output DC/DC converter managing independent power domains with programmable soft-start and rail-specific power-good signaling. Use Value: Reduces total component count by integrating two 2A regulators in one 3 mm × 4 mm QFN, freeing PCB area for antenna and battery placement. | Use Scenario: Powering RF transceiver ICs and baseband processors in 802.11ac/ax and WiMax modems. IC Role / Device Role / Timing Role: Low-noise, fast-transient buck regulator for sensitive analog/RF sections requiring stable 1.0–1.8 V supplies. Use Value: Delivers <20 mVpp output ripple with small 2.2 µF ceramic caps and rejects switching noise via separate AGND/PGND partitioning. |
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 |
|---|---|---|---|
| TPS65217C | Single-chip PMIC with integrated LDOs, battery charger, and fuel gauge; dual 2A bucks but fixed 1.0 V/1.2 V outputs and no adjustable soft-start. | Targeted at TI-based AM335x/AM437x reference designs; lacks independent SNS/PG/SS per channel. | Choose when full PMIC integration (charger + fuel gauge) is required and output voltage flexibility is secondary. |
| RTQ2134B-QA | Automotive-grade dual 3A buck (AEC-Q100 Grade 2); 2.5–5.5 V input, 0.6–3.3 V adjustable output, but 2.2 MHz max frequency and higher 75 µA IQ. | Qualified for automotive infotainment and ADAS; includes spread-spectrum and enhanced EMI filtering not present in MIC23158YML-T5. | Choose for automotive environments requiring AEC-Q100 qualification and higher current headroom, accepting larger inductor size and lower light-load efficiency. |
Compared with TPS65217C and RTQ2134B-QA, the MIC23158YML-T5 offers superior light-load efficiency (45 µA IQ), independent per-channel configuration (soft-start, power-good, sense), and 3 MHz operation enabling smallest possible passive components - making it optimal for consumer portable designs where size, battery life, and design flexibility are prioritized over PMIC integration or automotive qualification.
Availability
MIC23158YML-T5 is available at Aetrix Electronics and suitable for Solid State Drives (SSD), smartphones, and tablet PCs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC23158YML-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
Microchip Technology is a leading provider of microcontrollers, analog, and mixed-signal semiconductors, with expertise in power management, timing, and embedded control solutions.
The MIC23158YML-T5 belongs to Microchip's HyperLight Load® synchronous buck regulator product line, designed specifically for high-efficiency, ultra-compact DC/DC conversion in battery-powered portable electronics where board space, thermal budget, and standby power are critical constraints.
FAQ
What is the maximum output voltage supported by the MIC23158YML-T5?
The MIC23158YML-T5 supports an adjustable output voltage range from 1.0 V to 3.3 V per channel, set via external resistor dividers on FB1/FB2 pins. The internal feedback reference is 0.62 V ±1.3%, and the device maintains regulation accuracy across –40°C to +125°C junction temperature. Output voltage is limited by the input voltage minus dropout margin and duty cycle constraints (max ~80%).
Does the MIC23158YML-T5 support power sequencing between its two outputs?
Yes, the MIC23158YML-T5 supports independent power sequencing via separate EN1/EN2 and SS1/SS2 pins. Each channel can be enabled/disabled individually, and soft-start timing is programmable per channel using external capacitors (e.g., 470 pF yields ~300 µs ramp time). This allows precise control of turn-on order and delay between VOUT1 and VOUT2 for complex SoC or FPGA power-up requirements.
Is the MIC23158YML-T5 compatible with pre-biased outputs during startup?
Yes, the MIC23158YML-T5 is explicitly designed for output pre-bias safe operation. Its control architecture prevents reverse current flow and latch-up when powered into a pre-charged output capacitor - a requirement for hot-swap systems, multi-rail power supplies, and systems with backup power paths. This behavior is confirmed in the datasheet's General Description and Functional Description sections.
What is the recommended minimum output capacitance for stable operation of the MIC23158YML-T5?
The MIC23158YML-T5 is designed to operate stably with a minimum 2.2 µF ceramic output capacitor per channel. Microchip recommends X5R or X7R dielectric types (e.g., Murata GRM188R60J475KE19D, 4.7 µF, 0603) for optimal ESR, temperature stability, and size. Using ≥2.2 µF ensures adequate phase margin, low output ripple (<20 mVpp), and robust load transient response without external compensation.
How does the HyperLight Load® mode improve efficiency at light loads in the MIC23158YML-T5?
The HyperLight Load® mode in the MIC23158YML-T5 uses a minimum-on-time, variable-off-time control scheme that eliminates unnecessary switching cycles at light loads. This reduces gate drive and transition losses, enabling 83% efficiency at 1 mA - far exceeding conventional PWM operation. The architecture also maintains ultra-fast transient response (<10 µs) and low output ripple across the full 1 mA–2 A range without requiring external compensation.
MIC23158YML-T5 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:
- Discontinued at Digi-Key
- 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-T5 FAQ
1.How can I place an order for MIC23158YML-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23158YML-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 MIC23158YML-T5 reliable?
The price and inventory of MIC23158YML-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23158YML-T5 is usually 5 days.
3.What payment methods are accepted for MIC23158YML-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23158YML-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23158YML-T5?
MIC23158YML-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23158YML-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 MIC23158YML-T5?
For technical support, including MIC23158YML-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23158YML-T5 requirements.
6.How does Aetrix verify that MIC23158YML-T5 is sourced from the original manufacturer or authorized distributors?
All MIC23158YML-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 MIC23158YML-T5 meets industry standards.
7.What is the process for return or replacement of MIC23158YML-T5?
All MIC23158YML-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC23158YML-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 MIC23158YML-T5 part is unused and in its original packaging.
Return procedure for MIC23158YML-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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