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Microchip Technology MIC23156-0YCS-TR
- Part No.:
- MIC23156-0YCS-TR
- Manufacturer:
- Microchip Technology
- Package:
- 16-UFBGA, WLCSP
- Datasheet:
-
MIC23156-0YCS-TR.pdf
- Description:
- IC REG BUCK PROG 1.5A 16WLCSP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC23156-0YCS-TR from Microchip Technology is a 1.5A, 3 MHz synchronous buck regulator with I²C-controlled dynamic voltage scaling (DVS), HyperLight Load® mode, and ±1.5% output voltage accuracy over temperature. It delivers adjustable 0.7–2.4V output in 10 mV steps, supports 2.7–5.5V input, and targets processor core supply in space-constrained mobile and SSD applications.
For engineers reviewing the MIC23156-0YCS-TR datasheet, MIC23156-0YCS-TR pinout, MIC23156-0YCS-TR application, or MIC23156-0YCS-TR equivalent, key selection criteria include I²C address (0xB7), WLCSP-16 package (1.81 mm × 1.71 mm), soft-start programmability via external capacitor, PGOOD threshold (86–96% of VOUT), and thermal shutdown at 160°C.
Technical Context
The MIC23156-0YCS-TR implements a proprietary minimum on/off-time control architecture enabling seamless transition between HyperLight Load® (discontinuous conduction) and Continuous Conduction Mode (CCM) at ~3 MHz. Its dual-path regulation-using PMOS high-side and NMOS low-side switches-ensures ultra-low quiescent current (30 µA) at light loads and fast transient response without external compensation.
I²C Fast Mode Plus interface (1 MHz max clock) provides bidirectional register access for DVS, enable/disable, and status readback (e.g., PGOOD state). Pin-selectable VSEL allows hardware-based fallback to one of two preprogrammed output voltages, while SNS feedback placement near the output capacitor ensures stable regulation with only 2.2 µF ceramic capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and wide-input industrial rails without external LDO pre-regulation. |
| Output Current | Up to 1.5A - sufficient for modern ARM Cortex-A/R cores and NAND flash controllers in SSDs. |
| Switching Frequency | 3 MHz nominal - enables use of 1 µH inductors and compact total solution height <1 mm. |
| Output Voltage Accuracy | ±1.5% over –40°C to +125°C - guarantees stable core voltage under thermal stress without calibration. |
| I²C Address | 0xB7 (write), 0xB6 (read) - standard 7-bit address compatible with multi-device buses without conflict. |
| Quiescent Current | 30 µA (no switching) - extends battery life in always-on subsystems such as modem standby or sensor hubs. |
| Thermal Shutdown | 160°C threshold with 20°C hysteresis - protects silicon integrity during sustained overload or poor PCB thermal design. |
Pinout & Package
Package: 16-ball Wafer Level Chip-Scale Package (WLCSP), 0.4 mm pitch, 1.81 mm × 1.71 mm footprint, 0.5 mm height - optimized for ultra-thin mobile and wearable PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCL | I²C Clock Input | Fast Mode Plus (1 MHz) clock line requiring 4.7 kΩ pull-up; synchronizes all register writes/reads. |
| SDA | I²C Data I/O | Open-drain bidirectional data line with internal 20 Ω pull-down; supports read-back of PGOOD and fault status. |
| SNS | Output Voltage Sense | Direct connection to VOUT near output capacitor - critical for ±1.5% accuracy and load-transient stability. |
| SS | Soft-Start Timing | Connects external capacitor (e.g., 120 pF) to AGND to set ~230 µs ramp time and prevent inrush into pre-biased rails. |
| VSEL | Hardware Output Select | Logic-high selects Buck Register 2; logic-low selects Buck Register 1 - enables dual-voltage operation without I²C traffic. |
| PGOOD | Power-Good Indicator | Open-drain output asserting high when VOUT ≥86% of target - used for sequenced power-up of SoC peripherals. |
| EN | Enable Control | Active-high logic input; pulls device into 0.1 µA shutdown state when low - supports system-level sleep/wake coordination. |
| SW | Switch Node | High-frequency (3 MHz) connection to inductor - requires tight layout to minimize EMI coupling into analog sections. |
| PGND / AGND | Separate Ground Paths | PGND carries high di/dt PWM return current; AGND serves analog bias - separation prevents noise injection into feedback loop. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Mode | Enables >90% efficiency at 10 mA load by eliminating unnecessary switching cycles - extends battery runtime in idle states. |
| I²C-Controlled DVS | Adjusts output in precise 10 mV steps across 0.7–2.4V range - matches real-time DVFS requirements of application processors. |
| Safe Start-Up into Pre-Biased Output | Prevents reverse current flow when VOUT is already charged - eliminates need for external blocking diodes in hot-swap or multi-rail systems. |
| Stable with Minimal External Components | Operates with only 1 µH inductor and 2.2 µF ceramic output capacitor - reduces BOM count and board area vs. legacy buck regulators. |
| Ultra-Low Quiescent Current | 30 µA operating current with no switching - achieves sub-100 µA system standby when paired with low-IQ PMIC companions. |
Applications
| Mobile Handsets | Solid-State Drives (SSD) |
|---|---|
Use Scenario: Powering application processor cores (e.g., Qualcomm Snapdragon, MediaTek Helio) during active and DVFS-adjusted states. IC Role / Device Role / Timing Role: Primary core voltage regulator with I²C-synchronized voltage scaling to match CPU frequency changes. Use Value: Enables >93% peak efficiency and <50 mV load transient deviation at 1.5A, reducing thermal throttling and extending talk time. | Use Scenario: Supplying NAND flash controller and DRAM cache in M.2 and U.2 SSD modules. IC Role / Device Role / Timing Role: High-accuracy, low-noise 1.2V/1.8V core rail generator with PGOOD sequencing for NAND initialization. Use Value: Stable ±1.5% regulation ensures reliable flash programming/erasing across –40°C to +85°C ambient, preventing data corruption. |
| WiFi/WiBro Modules | Portable Medical Devices |
Use Scenario: Delivering clean, dynamically scaled power to RF transceivers (e.g., QCA9377, Intel AX200) during transmit/receive duty cycling. IC Role / Device Role / Timing Role: Low-ripple buck converter with fast load transient response (<10 µs recovery) to support burst-mode RF operation. Use Value: 3 MHz switching and HyperLight Load® maintain >85% efficiency at 50 mA RX current and >90% at 1.2A TX peak, minimizing heat in sealed enclosures. | Use Scenario: Regulating microcontroller and sensor interface rails in handheld diagnostic tools and insulin pumps. IC Role / Device Role / Timing Role: Ultra-low-noise, safety-critical power source with thermal shutdown and current-limit protection. Use Value: 30 µA quiescent current and safe start-up into pre-biased outputs ensure compliance with IEC 62304 Class C software safety requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | Fixed 3.3V/5V output; no I²C interface; 2.5–6V input; 3A rating; 2.25 MHz switching. | Not suitable for dynamic voltage scaling; better for fixed-rail, higher-current applications like baseband processors. | Select when I²C control and sub-1V output are unnecessary and higher output current is required. |
| RTQ2132B-WE | I²C-compatible (1 MHz); 0.6–3.3V output; ±1% accuracy; 2A rating; QFN-16 package; no HyperLight Load®. | Lacks light-load efficiency optimization; larger solution size due to mandatory 4.7 µF output capacitor. | Choose when tighter output accuracy (±1%) and higher current (2A) outweigh efficiency at light loads. |
Compared with TPS62130ARGTR and RTQ2132B-WE, the MIC23156-0YCS-TR uniquely combines I²C-programmable DVS, HyperLight Load® efficiency down to 10 mA, and WLCSP packaging - making it optimal for space- and battery-limited DVFS systems where firmware-controlled voltage agility is essential.
Availability
MIC23156-0YCS-TR is available at Aetrix Electronics and suitable for mobile handsets, solid-state drives (SSD), and portable medical devices requiring stable component supply, long-term lifecycle support, and consistent WLCSP-16 packaging.
Supply support for MIC23156-0YCS-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 Inc. is a leading provider of microcontrollers, analog components, and power management ICs, serving automotive, industrial, communications, and consumer markets with vertically integrated silicon and software solutions.
The MIC23156 product line is designed specifically for high-efficiency, dynamically scalable core power in ultra-compact portable electronics - emphasizing minimal external components, I²C configurability, and robust thermal performance in WLCSP form factor.
FAQ
What is the I²C address of the MIC23156-0YCS-TR and how is it configured?
The MIC23156-0YCS-TR uses a fixed 7-bit I²C address of 0xB7 for write operations and 0xB6 for read operations. No address pins or configuration resistors are present - the address is hard-coded in silicon and cannot be altered. This simplifies multi-device bus design but requires careful address mapping in systems with multiple MIC23156-0YCS-TR units, which must be controlled individually via separate I²C buses or GPIO-enabling.
Does the MIC23156-0YCS-TR support start-up into a pre-biased output voltage?
Yes, the MIC23156-0YCS-TR supports safe start-up into a pre-biased output. Its internal circuitry prevents reverse current flow from the output capacitor back into the switch node during enable, eliminating the need for external reverse-blocking diodes. This feature is confirmed in the datasheet's "Safe Start-Up into Pre-Biased Output" specification and is critical for hot-swap applications and multi-rail power sequencing where VOUT may retain charge from adjacent supplies.
What is the recommended soft-start capacitor value for the MIC23156-0YCS-TR and what does it control?
The MIC23156-0YCS-TR recommends a minimum 120 pF capacitor on the SS pin to achieve ~230 µs output voltage ramp time. The soft-start capacitor sets the rate at which the internal DAC ramps the reference voltage, directly controlling inrush current magnitude and preventing overshoot during power-up. Larger values increase ramp time linearly (tRISE ≈ 820×10³ × ln(10) × CSS), allowing fine-tuning for specific load capacitance and system sequencing requirements.
How does the HyperLight Load® mode improve efficiency at light loads in the MIC23156-0YCS-TR?
HyperLight Load® mode in the MIC23156-0YCS-TR improves light-load efficiency by replacing fixed-frequency PWM with pulse-frequency modulation (PFM): the controller activates only when output voltage droops below regulation threshold, then applies a fixed on-time pulse and variable off-time until regulation is restored. This eliminates switching losses during idle periods, achieving 30 µA quiescent current and >90% efficiency at 10 mA - far exceeding conventional buck regulators that waste energy cycling unnecessarily at low loads.
What are the absolute maximum ratings for the PVIN and AVIN pins of the MIC23156-0YCS-TR?
The absolute maximum rating for both PVIN and AVIN pins of the MIC23156-0YCS-TR is –0.3V to +6V. Exceeding +6V risks permanent damage to internal MOSFETs and gate drivers. The recommended operating range remains 2.7V to 5.5V per datasheet specifications. Note that AVIN must be tied to PVIN through a 10 Ω RC filter to suppress switching noise - applying independent supplies above 5.5V to AVIN violates absolute maximum limits and may cause latch-up or premature failure.
MIC23156-0YCS-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 16-UFBGA, WLCSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 2.4V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-WLCSP
MIC23156-0YCS-TR FAQ
1.How can I place an order for MIC23156-0YCS-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23156-0YCS-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 MIC23156-0YCS-TR reliable?
The price and inventory of MIC23156-0YCS-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23156-0YCS-TR is usually 5 days.
3.What payment methods are accepted for MIC23156-0YCS-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23156-0YCS-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23156-0YCS-TR?
MIC23156-0YCS-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23156-0YCS-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 MIC23156-0YCS-TR?
For technical support, including MIC23156-0YCS-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23156-0YCS-TR requirements.
6.How does Aetrix verify that MIC23156-0YCS-TR is sourced from the original manufacturer or authorized distributors?
All MIC23156-0YCS-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 MIC23156-0YCS-TR meets industry standards.
7.What is the process for return or replacement of MIC23156-0YCS-TR?
All MIC23156-0YCS-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23156-0YCS-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 MIC23156-0YCS-TR part is unused and in its original packaging.
Return procedure for MIC23156-0YCS-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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