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Microchip Technology MIC24052YJL-TR
- Part No.:
- MIC24052YJL-TR
- Manufacturer:
- Microchip Technology
- Package:
- 28-PowerVQFN
- Datasheet:
-
MIC24052YJL-TR.pdf
- Description:
- IC REG BUCK ADJ 6A 28QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,173
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Product details
Overview
MIC24052YJL-TR from Microchip Technology is a synchronous step-down DC/DC buck regulator with adaptive on-time control, delivering up to 6A output current across 4.5V–19V input range, adjustable 0.8V–5.5V output, ±1% feedback accuracy, and 600 kHz fixed switching frequency-designed for high-efficiency power delivery in telecom base stations and server VRMs.
For engineers reviewing the MIC24052YJL-TR datasheet, MIC24052YJL-TR pinout, MIC24052YJL-TR application, or MIC24052YJL-TR equivalent, key selection considerations include HyperLight Load® light-load efficiency (80% @ 10 mA), Hyper Speed Control® architecture enabling high delta-V operation (19V→0.8V), integrated 5V LDO for gate drive (PVDD/VDD), Power Good (PG) signaling, and QFN-28 5×6 mm thermal performance (θJA = 28°C/W).
Technical Context
The MIC24052YJL-TR implements an adaptive on-time control architecture that maintains constant 600 kHz switching in continuous conduction mode while automatically transitioning to variable-frequency discontinuous mode under light load to sustain high efficiency. Its zero-crossing comparator monitors low-side MOSFET voltage during OFF-time for current sensing-eliminating external sense resistors-and enables hiccup-mode short-circuit protection with foldback current limiting (7.5–17 A threshold).
Internal 5V LDOs power both control logic (VDD) and high-side gate drivers (PVDD); PVDD must be tied to PVIN when VIN < 5.5V. The device supports safe startup into pre-biased outputs via internal soft-start (3 ms ramp) and features a dedicated CS pin for accurate valley-current sensing, BST bootstrapping with 0.1 µF capacitor, and open-drain PG output with 92% VOUT threshold and 100 µs delay.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 19V - supports wide industrial and telecom input rails including 12V and 19V systems without external regulation. |
| Output Current | 6A continuous - sufficient for CPU/GPU core rail or ASIC power domains in servers and networking equipment. |
| Output Voltage Range | 0.8V to 5.5V adjustable - enables precise core voltage setting for modern processors and FPGAs via external resistor divider on FB pin. |
| Feedback Accuracy | ±1% at 0°C–85°C - ensures tight regulation critical for low-voltage digital loads where 20 mV error may cause functional failure. |
| Switching Frequency | 600 kHz nominal - balances EMI control, inductor size, and efficiency; tolerates ±25% variation due to VIN/VOUT ratio and load. |
| Efficiency | Up to 95% at full load; 80% at 10 mA - HyperLight Load® extends high efficiency across entire load range, reducing idle power in always-on systems. |
| Thermal Performance | θJA = 28°C/W (5×6 mm QFN) - enables 6A operation with minimal heatsinking on standard 4-layer PCBs per Microchip's layout guidelines. |
Pinout & Package
Package: 28-pin QFN (5 mm × 6 mm, 0.5 mm pitch, exposed thermal pad). Pin mapping validated per DS20005659A-page 16 Table 3-1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVDD (Pin 1) | 5V gate-drive LDO output | Supplies high-side MOSFET driver; requires 2.2 µF ceramic cap to PGND; tie to PVIN if VIN < 5.5V. |
| PGND (Pins 2,5–8,21) | Power ground return | Carries high di/dt switch-node current; must be routed separately from SGND with minimal loop area. |
| SW (Pins 4,9–12) | Switch node | Connects internal high-side source/low-side drain; high dv/dt node requiring short, isolated routing away from analog signals. |
| PVIN (Pins 13–19) | High-side MOSFET drain input | Primary input power path; multiple pins reduce resistance and inductance; bypass with parallel 4.7 µF ×2 ceramics to PGND. |
| BST (Pin 20) | Bootstrap supply | Drives high-side gate via 0.1 µF capacitor to SW; Schottky diode required from PVDD to BST for charge replenishment. |
| CS (Pin 22) | Current sense input | Senses low-side RDS(ON) voltage during OFF-time for overcurrent protection and zero-cross detection; Kelvin connection recommended. |
| SGND (Pin 23) | Signal ground reference | Reference for FB, EN, PG, VDD; must connect directly to ground plane-never to PGND on top layer. |
| FB (Pin 24) | Feedback input | Regulated to 0.8V; sets output via resistor divider (e.g., 2.49k/2.00k for 1.8V); ripple injection needed with ultra-low-ESR capacitors. |
| PG (Pin 25) | Power good open-drain | Asserts high when VOUT > 92% of target; requires external pull-up ≥10 kΩ to VDD for sequencing with downstream rails. |
| EN (Pin 26) | Enable control input | CMOS-compatible; high = active (min 1.8V), low = shutdown (5 µA quiescent); must not float. |
| VIN (Pin 27) | Main supply input | Feeds internal VDD LDO; bypass with 1 µF ceramic to SGND; UVLO threshold 3.7–4.5V rising. |
| VDD (Pin 28) | 5V control LDO output | Powers internal logic; requires 1 µF ceramic to SGND; output drops to 4.8–5.4V under 40 mA load. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® architecture | Enables 80% efficiency at 10 mA by auto-switching to discontinuous mode-critical for standby power in always-on telecom infrastructure. |
| Hyper Speed Control® topology | Supports 19V→0.8V conversion with minimal output capacitance (e.g., 100 µF total), reducing BOM cost and board space in high-ratio applications. |
| Any-capacitor stability | Operates stably with zero-to-high ESR output capacitors-eliminates need for specific ESR ranges and simplifies capacitor selection. |
| Foldback + hiccup-mode protection | Reduces average fault current during hard shorts (e.g., 8A short-circuit limit), preventing thermal runaway and enabling safe system-level recovery. |
| Pre-biased start-up support | Allows controlled turn-on when output already holds voltage (e.g., hot-swap or multi-rail sequencing), avoiding reverse current or latch-up. |
Applications
| Server Core Rail | Telecom Base Station RF PA |
|---|---|
Use Scenario: Providing 1.8V/6A core voltage to high-performance Xeon or EPYC CPUs in 1U rack servers with strict thermal envelope. IC Role / Device Role / Timing Role: Primary synchronous buck regulator implementing VR13/VR14-compliant dynamic voltage scaling with fast transient response. Use Value: Hyper Speed Control® delivers <200 µs recovery from 1A→6A load steps, minimizing voltage droop below ±3% spec for processor stability. | Use Scenario: Generating 5V/3A bias for GaN RF power amplifiers in 5G massive MIMO base station transceivers. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter stepping down 12V backplane to clean 5V PA supply with low noise and ripple. Use Value: 95% peak efficiency and 80% light-load efficiency reduce heat dissipation in densely packed RF modules, extending MTBF. |
| Network Switch ASIC Supply | Industrial PLC I/O Module |
Use Scenario: Delivering 0.85V/4A to 7nm Ethernet switch ASICs in enterprise Layer-3 switches with multi-phase constraints. IC Role / Device Role / Timing Role: Single-phase buck controller replacing multi-phase solutions where space and cost are prioritized over extreme transient performance. Use Value: Adjustable 0.8V–5.5V output and ±1% FB accuracy ensure compliance with ASIC vendor VMIN/VMAX specs across temperature. | Use Scenario: Powering isolated CAN/RS-485 transceivers and microcontrollers in DIN-rail mounted programmable logic controllers operating from 24V DC field supply. IC Role / Device Role / Timing Role: Robust industrial-grade buck regulator handling 4.5V–19V input transients (e.g., load dump, cold crank) while maintaining 3.3V/2A output. Use Value: –40°C to +125°C junction rating and 160°C thermal shutdown enable reliable operation in uncooled enclosures with ambient up to 85°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC24051YJL-TR | Same family, 6A rating, but lacks HyperLight Load®-quiescent current 750 µA vs. 450 µA; no light-load discontinuous mode. | Better suited for constant-load applications where light-load efficiency is secondary to cost. | Select MIC24051YJL-TR only if system spends >90% time above 1A load and BOM cost is primary constraint. |
| TPS546B24RVFT | 6A PMBus-enabled buck with 0.5% FB accuracy, 1.2V–5.5V output, but requires external compensation and has higher 1.2 mA quiescent current. | Preferred where digital telemetry, margining, or multi-rail coordination via PMBus is required. | Choose TPS546B24RVFT when firmware-controlled voltage adjustment or real-time efficiency monitoring is mandatory. |
Compared with MIC24051YJL-TR, the MIC24052YJL-TR adds critical light-load efficiency for always-on telecom nodes; versus TPS546B24RVFT, it trades digital control for lower component count and simpler layout-ideal for cost-sensitive, analog-only power designs.
Availability
MIC24052YJL-TR is available at Aetrix Electronics and suitable for server VRMs, telecom base station RF bias, and industrial PLC power supplies requiring stable component supply, long-term lifecycle assurance, and qualified automotive-grade traceability.
Supply support for MIC24052YJL-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 devices, and power management ICs, with broad industrial, automotive, and communications market focus.
The MIC24052YJL-TR belongs to Microchip's Hyper Speed Control® buck regulator product line, engineered specifically for high-efficiency, high-current point-of-load conversion in space-constrained telecom and computing infrastructure.
FAQ
What is the minimum output voltage supported by the MIC24052YJL-TR?
The MIC24052YJL-TR supports an adjustable output voltage down to 0.8V, set by the external resistor divider on the FB pin. This 0.8V minimum is guaranteed across the full –40°C to +125°C junction temperature range and aligns with core voltage requirements of modern CPUs and FPGAs. The feedback reference voltage is trimmed to 0.8V ±1% at 25°C, ensuring precision regulation even at ultra-low output levels.
Does the MIC24052YJL-TR require external current-sense resistors?
No, the MIC24052YJL-TR does not require external current-sense resistors. It uses the RDS(ON) of its internal low-side MOSFET (12.5 mΩ typical) to sense inductor current during the OFF-time via the CS pin-enabling accurate overcurrent protection and zero-cross detection without added cost, board space, or power loss. This integrated sensing also supports hiccup-mode short-circuit protection with foldback characteristics.
How does the MIC24052YJL-TR handle startup into a pre-biased output?
The MIC24052YJL-TR supports safe startup into a pre-biased output by disabling the high-side MOSFET until the FB voltage falls below the 0.8V reference, preventing reverse current flow through the low-side MOSFET. This behavior-verified in Figure 2-38 of the datasheet-ensures compatibility with hot-swap systems and multi-rail power architectures where downstream capacitance may retain residual voltage during power sequencing.
What thermal derating applies to the MIC24052YJL-TR at elevated ambient temperatures?
Per DS20005659A-page 6, the MIC24052YJL-TR has θJA = 28°C/W on a 5-square-inch 4-layer FR-4 PCB. At 85°C ambient, maximum continuous output current derates to approximately 4.2A (calculated as PD(MAX) = (125°C − 85°C)/28°C/W ≈ 1.43W; using 95% efficiency at 12V→1.8V yields ~4.2A). Full 6A operation is guaranteed only up to 55°C ambient under Microchip's reference layout conditions.
Can the MIC24052YJL-TR operate with ceramic output capacitors having near-zero ESR?
Yes, but ripple injection is required. The MIC24052YJL-TR's adaptive on-time control relies on feedback voltage ripple proportional to inductor current ripple. With ultra-low-ESR ceramic capacitors, this ripple becomes insufficient for reliable triggering-so a 4.7 nF capacitor (as shown in the Typical Application Schematic) must be added from FB to SW to inject controlled ripple (~20–100 mV peak-to-peak), ensuring stable operation and proper transient response.
MIC24052YJL-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Hyper Speed Control®, SuperSwitcher II™
- Package/Case:
- 28-PowerVQFN
- 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):
- 4.5V
- Voltage - Input (Max):
- 19V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-QFN (5x6)
MIC24052YJL-TR FAQ
1.How can I place an order for MIC24052YJL-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC24052YJL-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 MIC24052YJL-TR reliable?
The price and inventory of MIC24052YJL-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC24052YJL-TR is usually 5 days.
3.What payment methods are accepted for MIC24052YJL-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC24052YJL-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC24052YJL-TR?
MIC24052YJL-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC24052YJL-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 MIC24052YJL-TR?
For technical support, including MIC24052YJL-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC24052YJL-TR requirements.
6.How does Aetrix verify that MIC24052YJL-TR is sourced from the original manufacturer or authorized distributors?
All MIC24052YJL-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 MIC24052YJL-TR meets industry standards.
7.What is the process for return or replacement of MIC24052YJL-TR?
All MIC24052YJL-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC24052YJL-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 MIC24052YJL-TR part is unused and in its original packaging.
Return procedure for MIC24052YJL-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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