My Inquiry
My Account
Microchip Technology MIC33264YGK-T5
- Part No.:
- MIC33264YGK-T5
- Manufacturer:
- Microchip Technology
- Package:
- 20-PowerFQFN
- Datasheet:
-
MIC33264YGK-T5.pdf
- Description:
- IC REG BUCK ADJ 2A 20QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,310
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC33264YGK-T5 from Micrel is a 4MHz synchronous buck regulator with integrated inductor and HyperLight Load® mode, delivering up to 2A output current, 0.7V–5V adjustable output voltage, and 93% peak efficiency. It operates from 2.7V–5.5V input, features 100% duty cycle for low-dropout operation, and targets space-constrained point-of-load applications in portable devices and SSD systems.
For engineers reviewing the MIC33264YGK-T5 datasheet, MIC33264YGK-T5 pinout, MIC33264YGK-T5 application, or MIC33264YGK-T5 equivalent, key selection considerations include its integrated inductor (4.6mm × 7mm total solution), 180Ω internal SW pull-down for auto-discharge, 33µA quiescent current, and −40°C to +125°C junction temperature range.
Technical Context
The MIC33264YGK-T5 implements a proprietary HyperLight Load® (HLL) control architecture combining minimum-on/off-time pulse-frequency modulation at light loads (<120mA) and fixed ~4MHz PWM switching in continuous conduction mode (>220mA). Its integrated power stage includes PMOS/NMOS synchronous switches and a monolithic inductor.
It supports pre-bias start-up, configurable soft-start via external capacitor, and delivers ultra-low output ripple using small ceramic capacitors. The 180Ω internal SW pull-down (exclusive to MIC33264) enables automatic output discharge during shutdown-distinguishing it from the MIC33263 variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 4MHz nominal in PWM mode; enables compact filter design and high-frequency noise suppression. |
| Output Current | Up to 2A continuous; supports demanding POL rails in SSDs and digital cameras. |
| Input Voltage Range | 2.7V–5.5V; compatible with single-cell Li-ion, USB, and 3.3V/5V system rails. |
| Output Voltage Range | Adjustable 0.7V–5V via resistor divider; supports core, I/O, and peripheral rail requirements. |
| Quiescent Current | 33µA typical; minimizes standby power loss in battery-powered portable devices. |
| Shutdown Current | 0.1µA max; enables deep-sleep modes without significant battery drain. |
| Feedback Reference | 0.7V ±2.5% accuracy; ensures tight output regulation across load/temperature. |
| Auto-Discharge | 180Ω internal SW pull-down (MIC33264 only); eliminates need for external discharge circuitry. |
Pinout & Package
Package: 20-pin 2.5mm × 3.0mm × 1.9mm QFN (GK), RoHS-compliant, halogen-free, matte tin lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 20 | PVIN | Power input (2.7V–5.5V); requires local 2.2µF+ bypass to PGND for high-frequency noise suppression. |
| 2, 8, 9 | PGND | High-current power ground; must be low-inductance, separate from AGND to prevent coupling. |
| 3–7 | SW | Switch node; connects to integrated inductor; includes 180Ω internal pull-down to PGND when disabled (MIC33264 only). |
| 10–13 | VOUT | Regulated output; connects to integrated inductor; requires 22µF ceramic capacitor to PGND for stability and ripple control. |
| 14 | AGND | Analog ground reference; ties central high-current ground point (CIN/COUT/PGND) for optimal regulation accuracy. |
| 15 | AVIN | Analog supply input; must be tied to PVIN with dedicated 1µF decoupling to isolate control circuitry noise. |
| 16 | SS | Soft-start timing control; external capacitor sets ramp time (e.g., 1nF → ~575µs) and enables pre-bias start-up. |
| 17 | PG | Open-drain power-good indicator; asserts high when VOUT reaches ≥90% of target; requires external pull-up to VOUT. |
| 18 | FB | Feedback input; compares divided VOUT against 0.7V internal reference to regulate output voltage. |
| 19 | EN | Enable input; logic high (>0.8V) activates regulator; logic low (<0.5V) disables with 0.1µA shutdown current. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Inductor + MOSFETs | Reduces total solution size to 4.6mm × 7mm and eliminates external magnetics layout complexity. |
| HyperLight Load® Mode | Maintains >85% efficiency at 1mA load while enabling ultra-fast transient response in PFM mode. |
| 100% Duty Cycle Operation | Supports dropout as low as RDSON × IOUT + DCR × IOUT; extends battery runtime in low-VIN scenarios. |
| Low-Radiated EMI | Meets EN55022 Class B without external shielding-critical for noise-sensitive portable designs. |
| Thermal Protection | Internal thermal shutdown at 160°C with 20°C hysteresis prevents damage under sustained overload. |
| Configurable Soft-Start | External capacitor on SS pin allows precise control of output ramp rate and avoids inrush-induced overshoot. |
Applications
| 5V Point-of-Load (POL) | SSD Storage Systems |
|---|---|
Use Scenario: Local 5V rail generation from 5.5V system bus in compact SSD modules. IC Role / Device Role / Timing Role: Primary DC/DC step-down regulator providing stable 5V output with fast load transients during NAND flash write cycles. Use Value: Integrated inductor and 4MHz switching minimize PCB area and EMI, while 180Ω auto-discharge prevents residual voltage from interfering with controller reset sequencing. | Use Scenario: Powering SATA or NVMe controller ICs requiring tightly regulated 3.3V or 1.8V rails. IC Role / Device Role / Timing Role: Adjustable-output buck converter delivering up to 2A with <±2.5% accuracy across temperature and line variation. Use Value: 33µA quiescent current and HLL mode sustain efficiency >85% at idle states, extending SSD standby battery life in portable enclosures. |
| Digital Cameras | Portable Devices |
Use Scenario: Supplying image sensor and ISP core voltages (e.g., 1.2V, 1.8V) in ultra-thin camera modules. IC Role / Device Role / Timing Role: High-efficiency POL regulator supporting rapid burst-mode current demands during image capture. Use Value: Ultra-fast transient response and low output ripple (<10mV p-p) prevent sensor noise and image artifacts during dynamic load steps. | Use Scenario: Battery-powered handheld instruments requiring long runtime and compact power solutions. IC Role / Device Role / Timing Role: Main system regulator converting single-cell Li-ion (2.7V–4.2V) to 1.2V/1.5V/2.5V processor rails. Use Value: 100% duty cycle operation maintains regulation down to VIN ≈ VOUT, maximizing usable battery capacity before cutoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC33263YGK | No internal 180Ω SW pull-down; lacks auto-discharge capability. | Not suitable where controlled output discharge is required during shutdown. | Select MIC33263YGK only if external discharge circuitry is acceptable and cost reduction is prioritized. |
| TPS62260DRVR | 2.25MHz switching, 1.2A output, no integrated inductor; requires external coil and higher BOM count. | Higher solution footprint and EMI sensitivity due to discrete inductor placement. | Choose TPS62260DRVR only when lower switching frequency is preferred for EMI filtering trade-offs or inductor selection flexibility is needed. |
Compared with MIC33264YGK-T5, MIC33263YGK omits auto-discharge-requiring external components for safe shutdown in systems with hold-up capacitance-while TPS62260DRVR trades integration for design flexibility but increases layout complexity and total solution size.
Availability
MIC33264YGK-T5 is available at Aetrix Electronics and suitable for 5V point-of-load (POL), SSD storage systems, and portable devices requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC33264YGK-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
Micrel Inc. was a U.S.-based semiconductor company specializing in high-performance analog, power, timing, and communications ICs before its acquisition by Microchip Technology in 2015.
The MIC33263/4 family was designed specifically for space-constrained, high-efficiency DC/DC conversion in portable and storage applications-emphasizing integration, light-load efficiency, and simplified layout.
FAQ
What is the maximum output current supported by the MIC33264YGK-T5?
The MIC33264YGK-T5 supports up to 2A continuous output current under specified thermal conditions (θJA = 50°C/W, TJ ≤ +125°C). Peak current limit is 2.5A–3.3A depending on input voltage, but sustained operation above 2A requires careful thermal management and proper PCB copper area per the datasheet layout guidelines. The MIC33264YGK-T5 achieves this with its advanced copper lead frame and integrated inductor design.
Does the MIC33264YGK-T5 require an external inductor?
No, the MIC33264YGK-T5 integrates both power MOSFETs and the inductor into a single 2.5mm × 3.0mm QFN package. This eliminates external inductor selection, placement, and EMI concerns-reducing total solution size to just 4.6mm × 7mm. The integrated inductor is optimized for 4MHz operation and rated for 2A continuous current, making the MIC33264YGK-T5 a complete, drop-in-ready buck solution.
How does the auto-discharge feature work on the MIC33264YGK-T5?
When the EN pin is driven low, the MIC33264YGK-T5 activates an internal 180Ω pull-down between the SW pin and PGND, discharging the output capacitor through the integrated inductor path. This feature is exclusive to the MIC33264 variant and eliminates the need for external discharge FETs or resistors. It ensures rapid, controlled VOUT decay-critical for safe power sequencing in systems with multiple rails or microcontrollers requiring clean reset behavior. The MIC33264YGK-T5 implements this without additional external components.
What is the purpose of the HyperLight Load® mode in the MIC33264YGK-T5?
HyperLight Load® (HLL) mode is a proprietary Micrel control scheme that switches the MIC33264YGK-T5 to pulse-frequency modulation (PFM) at light loads (<120mA), reducing switching losses and maintaining >85% efficiency even at 1mA. It uses minimum-on/off-time control to deliver energy only when needed, enabling ultra-fast transient response and low quiescent current (33µA). This mode distinguishes the MIC33264YGK-T5 from standard PWM-only regulators and directly supports battery longevity in always-on portable applications.
Can the MIC33264YGK-T5 operate with a 2.7V input and 2.5V output?
Yes, the MIC33264YGK-T5 supports 2.7V–5.5V input and can regulate down to 0.7V output, including 2.5V. At VIN = 2.7V and VOUT = 2.5V, it enters 100% duty cycle mode-keeping the high-side MOSFET fully on-achieving low dropout operation determined by RDSON and inductor DCR. This capability makes the MIC33264YGK-T5 especially valuable in single-cell Li-ion applications where input voltage sags near end-of-discharge, and stable 2.5V rail maintenance is essential. The MIC33264YGK-T5 maintains regulation across this range without external intervention.
MIC33264YGK-T5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 20-PowerFQFN
- 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):
- 0.7V
- Voltage - Output (Max):
- 5V
- Current - Output:
- 2A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-QFN (2.5x3)
MIC33264YGK-T5 FAQ
1.How can I place an order for MIC33264YGK-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC33264YGK-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 MIC33264YGK-T5 reliable?
The price and inventory of MIC33264YGK-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC33264YGK-T5 is usually 5 days.
3.What payment methods are accepted for MIC33264YGK-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC33264YGK-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC33264YGK-T5?
MIC33264YGK-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC33264YGK-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 MIC33264YGK-T5?
For technical support, including MIC33264YGK-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC33264YGK-T5 requirements.
6.How does Aetrix verify that MIC33264YGK-T5 is sourced from the original manufacturer or authorized distributors?
All MIC33264YGK-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 MIC33264YGK-T5 meets industry standards.
7.What is the process for return or replacement of MIC33264YGK-T5?
All MIC33264YGK-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC33264YGK-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 MIC33264YGK-T5 part is unused and in its original packaging.
Return procedure for MIC33264YGK-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC33264YGK-T5 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
