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Microchip Technology MIC23603YML-TR
- Part No.:
- MIC23603YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 20-VFDFN Exposed Pad
- Datasheet:
-
MIC23603YML-TR.pdf
- Description:
- IC REG BUCK ADJ 6A 20DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,116
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Product details
Overview
MIC23603YML-TR from Microchip Technology is a high-efficiency, 4 MHz synchronous buck regulator delivering up to 6 A output current with HyperLight Load® mode, 24 µA quiescent current, and 0.65 V to 3.6 V adjustable output voltage - designed for powering µC/FPGA core rails in space-constrained embedded systems.
For engineers reviewing the MIC23603YML-TR datasheet, MIC23603YML-TR pinout, MIC23603YML-TR application, or MIC23603YML-TR equivalent, this page delivers verified electrical specs, validated package mapping, confirmed thermal performance (–40°C to +125°C), and real-world transient response data for POL supply design validation.
Technical Context
The MIC23603YML-TR implements a proprietary HyperLight Load® control architecture combining minimum-on/off-time PFM at light loads (<300 mA) and fixed-frequency 4 MHz PWM in CCM above ~300 mA. It integrates dual MOSFETs (PMOS high-side, NMOS low-side) with typical RDS(ON) of 30 mΩ and 25 mΩ respectively.
Its analog control loop uses a 0.62 V internal reference, feedback via FB pin, output sensing via dedicated SNS pin, and independent AVIN/AGND paths to isolate noise-sensitive regulation circuitry from high-current PVIN/PGND switching paths - enabling stable operation with ultra-low 5 mVPP ripple in full PWM mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, USB 5 V, and industrial 3.3 V/5 V rails without external pre-regulation. |
| Output Current | 6 A continuous - sustains full load in compact 4 mm × 5 mm DFN with θJA = 44.1°C/W and thermal shutdown at 160°C. |
| Switching Frequency | 4 MHz nominal in CCM - enables use of sub-1 mm height 0.33 µH inductors and small ceramic output capacitors (≥47 µF). |
| Quiescent Current | 24 µA typical - maintains >81% efficiency at 1 mA, critical for battery-backed or always-on subsystems. |
| Feedback Reference | 0.62 V ±1.2% - sets precise output voltage via external resistor divider; supports 0.65 V to 3.6 V adjustment range. |
| Output Ripple | 5 mVPP in full PWM mode - achieved with minimal external components, eliminating need for large bulk capacitance. |
| Shutdown Current | 0.01 µA - reduces system standby power to negligible levels when EN is low. |
| Junction Temp Range | –40°C to +125°C - qualified for automotive under-hood, industrial control, and telecom infrastructure applications. |
Pinout & Package
Package: 20-pin 4 mm × 5 mm DFN with exposed thermal pad (EP = PGND). Pin pitch is 0.5 mm; land pattern follows Microchip specification DS20005636A-page 19.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW (Pins 1,2,9,10,11,12,19,20) | Switch node output | Connects directly to inductor; carries high di/dt current; requires tight layout to minimize EMI and voltage spikes. |
| PVIN (Pins 3,13,14,18) | Main power input | Supplies internal MOSFET drivers; requires ≥10 µF local ceramic bypass to PGND for high-frequency noise suppression. |
| EN (Pin 5) | Enable control input | Logic-high (>0.8 V) activates regulator; logic-low (<0.4 V) disables with 0.01 µA shutdown current; must not float. |
| SNS (Pin 6) | Output voltage sense | High-accuracy remote sensing point - connect directly to output capacitor anode to reject PCB IR drop. |
| FB (Pin 7) | Feedback input | Compares divided output voltage against 0.62 V reference; sets regulated VOUT via R3/R4 divider per Equation 4-2. |
| SS (Pin 15) | Soft-start timing | Controls VOUT ramp time (e.g., 1.2 ms with 2.2 nF); prevents inrush current and overshoot during startup. |
| PG (Pin 4) | Power good indicator | Open-drain output asserting high when VOUT ≥90% of nominal; requires external pull-up to VOUT (≥5 kΩ). |
| AVIN (Pin 17) | Analog supply input | Provides clean bias for control circuitry; tied to PVIN via 10 Ω resistor to suppress switching noise coupling. |
| AGND (Pins 8,16) | Analog ground reference | Separate return path for FB/SNS/AVIN circuits; recommended to tie to PGND via 3 Ω resistor to reduce ground bounce. |
| PGND (EP) | Power ground return | Primary return for inductor freewheel current; must be low-inductance, low-area connection to minimize EMI and thermal rise. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® mode | Enables PFM operation below ~300 mA, sustaining >81% efficiency at 1 mA while delivering ultra-fast transient response. |
| Fully integrated MOSFETs | Eliminates external high-side/low-side switches; PMOS/NMOS pair achieves 93% peak efficiency with optimized RDS(ON). |
| Ultra-low output ripple | 5 mVPP in PWM mode and 14 mVPP in HyperLight Load mode - enables use of small, low-ESR ceramic capacitors only. |
| Programmable soft-start | Configurable rise time (e.g., 1.2 ms with 2.2 nF) prevents input voltage sag and output overshoot during power-up. |
| Robust protection suite | Includes thermal shutdown (160°C), overcurrent limiting (12 A typ), UVLO (2.5 V turn-on), and 20°C hysteresis for reliable fault recovery. |
| Independent analog/power domains | Dual supply (AVIN/PVIN) and ground (AGND/PGND) paths isolate sensitive regulation circuitry from noisy switching currents. |
Applications
| µC/FPGA Core Power | Network Infrastructure POL |
|---|---|
|
Use Scenario: Supplying 1.2 V/1.8 V core voltage to ARM-based microcontrollers or Xilinx Artix-7 FPGAs in compact edge nodes. IC Role / Device Role / Timing Role: Primary DC/DC step-down regulator providing tightly regulated, low-noise core rail with fast load-step response. Use Value: Enables sub-1 mm solution height using 0.33 µH inductor and 47 µF output cap; 4 MHz switching avoids audible noise and simplifies EMI filtering. |
Use Scenario: Point-of-load conversion for ASICs and PHYs in 10G Ethernet switches and baseband units. IC Role / Device Role / Timing Role: High-current POL regulator delivering stable 1.0 V–2.5 V rails with <20 µs recovery from 2 A load transients. Use Value: 6 A capability and HyperLight Load® mode support burst-mode traffic with minimal idle power loss across temperature extremes. |
| Barcode Reader Power | Set-Top Box SoC Supply |
|
Use Scenario: Powering laser diode drivers and image sensor interfaces in handheld retail scanners with intermittent duty cycles. IC Role / Device Role / Timing Role: Efficient main supply converting 5 V USB input to 3.3 V/1.8 V rails while maintaining low standby consumption. Use Value: 24 µA quiescent current extends battery life; 0.01 µA shutdown current eliminates drain during sleep mode. |
Use Scenario: Delivering 1.2 V CPU core and 1.8 V memory rails in consumer DTV platforms with strict thermal and size constraints. IC Role / Device Role / Timing Role: Dual-rail POL regulator supporting dynamic voltage scaling and rapid state transitions. Use Value: 4 mm × 5 mm DFN footprint saves board area vs. discrete solutions; –40°C to +125°C rating ensures reliability in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS546B24RVFT | 6 A, 2.95–16 V input, 4.5 MHz, integrated FETs, but larger 28-pin QFN (5 mm × 4.5 mm) and higher 40 µA IQ. | Targets wider input range (e.g., 12 V intermediate bus); less suitable for 5 V-only designs due to minimum VIN. | Select when input exceeds 5.5 V or when higher VIN margin is required; verify layout compatibility with larger package. |
| RTQ2132BGQW | 6 A, 2.7–5.5 V input, 2 MHz max, 25 µA IQ, 0.6 V ref, but no HyperLight Load® and higher 12 mVPP ripple. | Lacks ultra-fast light-load transient response; better suited for constant-load applications than burst-mode processors. | Choose where cost sensitivity outweighs ripple/transient requirements; confirm soft-start and PG functionality match system needs. |
Compared with TPS546B24RVFT and RTQ2132BGQW, the MIC23603YML-TR uniquely combines 4 MHz operation, HyperLight Load® efficiency down to 1 mA, and 5 mVPP ripple in the smallest footprint - making it optimal for thermally constrained, battery-aware, or high-transient FPGA/microcontroller supplies.
Availability
MIC23603YML-TR is available at Aetrix Electronics and suitable for µC/FPGA power, network infrastructure POL, and barcode reader applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC23603YML-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 global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with broad industrial, automotive, and communications market reach.
The MIC23603 product line delivers high-density, high-efficiency DC/DC regulators for space-constrained embedded systems - engineered specifically for processor core, FPGA, and ASIC point-of-load applications demanding ultra-low quiescent current and fast transient response.
FAQ
What is the maximum output current capability of the MIC23603YML-TR?
The MIC23603YML-TR delivers up to 6 A continuous output current under thermal limits defined by its 4 mm × 5 mm DFN package and θJA = 44.1°C/W. At 25°C ambient and with proper PCB copper area, it sustains 6 A at VOUT = 1.8 V and VIN = 3.6 V. Derating applies above 85°C ambient per Figure 2-19.
Does the MIC23603YML-TR require external MOSFETs?
No - the MIC23603YML-TR integrates both high-side PMOS and low-side NMOS power switches. Its fully integrated architecture eliminates external FETs, gate drivers, and associated bootstrap components, reducing bill-of-materials count and PCB footprint.
How does HyperLight Load® mode improve efficiency at light loads?
HyperLight Load® mode enables pulse-frequency modulation (PFM) below ~300 mA, where the MIC23603YML-TR activates switching only when needed to maintain regulation. This reduces switching losses and yields 81% efficiency at 1 mA - significantly higher than fixed-frequency alternatives.
What is the purpose of the separate AVIN and AGND pins on the MIC23603YML-TR?
AVIN and AGND provide isolated analog supply and ground paths for the feedback comparator, error amplifier, and soft-start circuitry. Tying AVIN to PVIN through a 10 Ω resistor and connecting AGND to PGND via a 3 Ω resistor minimizes noise coupling from high-current switching into the regulation loop.
Can the MIC23603YML-TR operate with a 0.33 µH inductor?
Yes - the MIC23603YML-TR is explicitly designed for 0.33 µH to 1 µH inductors. A 0.33 µH value optimizes transient response, while maintaining stability with ≥47 µF ceramic output capacitance and optional 33–68 pF feed-forward capacitor across the top FB resistor.
MIC23603YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 20-VFDFN 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):
- 0.65V
- Voltage - Output (Max):
- 3.6V
- Current - Output:
- 6A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-DFN (4x5)
MIC23603YML-TR FAQ
1.How can I place an order for MIC23603YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23603YML-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 MIC23603YML-TR reliable?
The price and inventory of MIC23603YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23603YML-TR is usually 5 days.
3.What payment methods are accepted for MIC23603YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23603YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23603YML-TR?
MIC23603YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23603YML-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 MIC23603YML-TR?
For technical support, including MIC23603YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23603YML-TR requirements.
6.How does Aetrix verify that MIC23603YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC23603YML-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 MIC23603YML-TR meets industry standards.
7.What is the process for return or replacement of MIC23603YML-TR?
All MIC23603YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23603YML-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 MIC23603YML-TR part is unused and in its original packaging.
Return procedure for MIC23603YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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