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Microchip Technology MIC2605YML-TR
- Part No.:
- MIC2605YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2605YML-TR.pdf
- Description:
- IC REG BOOST ADJ 500MA 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:5,086
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Product details
Overview
MIC2605YML-TR from Microchip Technology is a 1.2 MHz, 0.5A PWM boost switching regulator with integrated 40V bipolar switch and Schottky diode in an 8-lead 2 mm × 2 mm TDFN package. It operates from 4.5V to 20V input, delivers adjustable output up to 40V, and features programmable soft-start, UVLO, overvoltage and overtemperature protection - used in TFT-LCD bias supplies and broadband communications power stages.
For engineers reviewing the MIC2605YML-TR datasheet, MIC2605YML-TR pinout, MIC2605YML-TR application, or MIC2605YML-TR equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, application-specific implementation guidance, and two confirmed alternative parts for system-level power architecture decisions.
Technical Context
The MIC2605YML-TR implements constant-frequency current-mode PWM control at 1.2 MHz with internal slope compensation and gm error amplifier feedback. Its 0.5A bipolar output transistor and integrated Schottky diode enable high-power-density boost conversion without external switching elements.
It supports stable operation with ceramic capacitors as small as 1 μF on VIN and VOUT, achieves <10 μA shutdown current, and includes output overvoltage protection triggered at +15% above programmed VOUT. The device maintains regulation across –40°C to +125°C junction temperature with internal 1.25V reference (±2%) and 85% maximum duty cycle.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.2 MHz - enables use of compact 10 μH inductors and low-profile ceramic capacitors, reducing board area by >40% vs. 500 kHz designs. |
| Input Voltage Range | 4.5V to 20V - supports direct integration with 5V, 12V, and 19V supply rails common in set-top boxes and DSL modems. |
| Output Voltage Range | Adjustable up to 40V - achieved via external resistor divider on FB pin; sufficient for TFT-LCD gate driver bias (25–35V) and local boost rails. |
| Switch Current Limit | 0.5A typical - defines maximum continuous load capability; limits peak inductor current to prevent saturation under transient conditions. |
| Feedback Reference | 1.25V ±2% - sets output voltage accuracy; allows ±1.5% total output regulation including line/load effects per datasheet test conditions. |
| Shutdown Current | <0.1 μA typical - ensures negligible battery drain in always-on systems during standby mode, critical for remote-control receivers. |
| Junction Temperature | –40°C to +125°C - validated for industrial and automotive cabin applications where ambient exceeds 85°C. |
Pinout & Package
Package: 8-lead 2 mm × 2 mm TDFN with exposed thermal pad (EPAD). RoHS-compliant, lead-free, moisture-sensitive level 1 (MSL1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VOUT (Pin 1) | Cathode of internal Schottky diode | Connects directly to output capacitor; requires ≥1 μF ceramic cap placed adjacent to pin and PGND for ripple suppression. |
| VIN (Pin 2) | Main input power rail | Accepts 4.5–20V; must be bypassed with 1 μF ceramic capacitor close to VIN and PGND to suppress high-frequency switching noise. |
| VDD (Pin 3) | Internal regulated supply | Powered from VIN; connect to VIN when VIN ≤ 7V; bypass with 0.1 μF ceramic to stabilize control circuitry. |
| EN (Pin 4) | Enable logic input | Active-high (≥1.5V); pulls device into ultra-low-IQ shutdown state (<0.1 μA) when low; no external pull-up required. |
| SS (Pin 5) | Soft-start timing node | Connects to ground via capacitor (e.g., 0.1 μF) to control monotonic output ramp rate and limit inrush current. |
| FB (Pin 6) | Feedback voltage input | Senses output via resistor divider; internal 1.25V reference sets VOUT = 1.25 × (1 + R1/R2); R2 ≤ 1 kΩ required. |
| SW (Pin 7) | Switch node | Collector of internal bipolar transistor; connects to inductor; high dv/dt node requiring short, isolated routing away from analog traces. |
| PGND (Pin 8) | Power ground return | High-current return path for switch and Schottky; must be routed as low-inductance loop separate from AGND to minimize noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Schottky diode | Eliminates need for external diode; reduces BOM count and layout area while maintaining 450 mV forward drop at 1 mA (850 mV at 150 mA). |
| Stable with ceramic capacitors | Enables use of X5R/X7R MLCCs as small as 1 μF on input/output - avoids bulkier tantalum or electrolytic capacitors and improves reliability. |
| Output overvoltage protection | Shuts down switch if output exceeds programmed value by 15%, protecting downstream LCD drivers or RF front-end components from damage. |
| Programmable soft-start | Prevents input inrush and output overshoot via external SS-to-ground capacitor; eliminates need for external timing IC or RC network. |
| High efficiency at light loads | Achieves >85% efficiency at 5 mA output (VOUT = 32V), critical for always-on tuner modules where standby power matters. |
Applications
| TFT-LCD Bias Supply | DSL Line Card Power |
|---|---|
Use Scenario: Generating 28V gate-on and –10V gate-off voltages for active-matrix LCD column drivers in smart displays. IC Role / Device Role / Timing Role: Primary positive-output boost regulator delivering stable, low-ripple bias rail with fast transient response to pixel switching events. Use Value: Integrated Schottky and 1.2 MHz switching allow compact 2-layer PCB layout with <12 mm² footprint - meeting tight bezel constraints in 10.1" industrial panels. |
Use Scenario: Providing 12V auxiliary bias for DSLAM line interface cards operating from 5V backplane rails. IC Role / Device Role / Timing Role: Local boost converter supplying isolated analog front-end circuitry with low-noise, tightly regulated output. Use Value: UVLO and overtemperature shutdown ensure fail-safe operation during thermal overload or brownout, preventing line card lockup in telco central offices. |
| Broadband Cable Modem Tuner | TV Set-Top Box RF Front-End |
Use Scenario: Powering wideband RF tuners requiring 5V–18V adjustable supply with minimal conducted EMI. IC Role / Device Role / Timing Role: High-frequency boost controller minimizing input ripple and spurious switching noise coupled into sensitive IF paths. Use Value: 1.2 MHz fixed-frequency PWM reduces fundamental noise to >100 MHz - outside TV tuner IF band (36–44 MHz), easing EMC filtering. |
Use Scenario: Delivering 32V bias to GaAs FET amplifiers in satellite TV LNB power supplies. IC Role / Device Role / Timing Role: High-voltage boost stage with output overvoltage protection safeguarding expensive RF components during load transients. Use Value: 40V internal switch rating and OVP threshold at +15% eliminate need for external crowbar circuit, reducing component count by 3–4 parts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2307DN-LF-Z | 3A MOSFET-based boost; 2 MHz switching; requires external Schottky diode; no integrated OVP. | Higher current capability but larger solution size due to discrete diode and higher quiescent current (2.5 mA vs. 4.2 mA typ). | Choose MP2307DN-LF-Z only when >1A output current is required and OVP can be implemented externally. |
| TPS61088RHLR | 10A boost with I²C interface; 2.5V–12V input; no internal diode; requires external Schottky; 2.2 MHz. | Targeted at USB PD and portable power banks - lacks -40°C to +125°C rating and integrated diode for space-constrained industrial use. | Choose TPS61088RHLR only for high-current, digitally controlled applications where extended temperature range is not required. |
Compared with MP2307DN-LF-Z and TPS61088RHLR, the MIC2605YML-TR offers the only combination of integrated Schottky diode, 1.2 MHz operation, full industrial temperature range, and output overvoltage protection in a 2 mm × 2 mm footprint - making it optimal for space- and reliability-critical bias supply designs.
Availability
MIC2605YML-TR is available at Aetrix Electronics and suitable for TFT-LCD bias supplies, DSL line card power, and broadband cable modem tuner applications requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for MIC2605YML-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 global manufacturing and quality certifications including ISO 9001 and IATF 16949.
The MIC2605YML-TR belongs to Microchip's high-frequency DC/DC boost regulator product line, designed specifically for compact, high-efficiency bias supplies in display, broadband, and telecom infrastructure equipment.
FAQ
What is the maximum output voltage achievable with MIC2605YML-TR?
The MIC2605YML-TR supports adjustable output voltage up to 40V, determined by the external feedback resistor divider connected to the FB pin. With its internal 1.25V reference and ±2% tolerance, the output is set using VOUT = 1.25 × (1 + R1/R2), where R2 must be ≤1 kΩ. This range covers standard TFT-LCD gate drive requirements (25–35V) and DSL line card auxiliary rails.
Does MIC2605YML-TR require an external Schottky diode?
No, the MIC2605YML-TR integrates a Schottky diode internally - its cathode is accessible at the VOUT pin and anode is connected to the SW pin. This eliminates the need for an external diode, reducing bill-of-materials count, PCB area, and potential failure points. The diode exhibits 450 mV forward drop at 1 mA and 850 mV at 150 mA per datasheet specifications.
How does the soft-start function work on MIC2605YML-TR?
The MIC2605YML-TR implements programmable soft-start via the SS pin: connecting a capacitor (e.g., 0.1 μF) from SS to ground creates a controlled voltage ramp that limits output slew rate during startup. This prevents inrush current into output capacitance and avoids output overshoot. No external voltage source or timing circuit is needed - the internal current source charges the capacitor linearly.
What protection features are built into MIC2605YML-TR?
The MIC2605YML-TR includes under-voltage lockout (UVLO), output overvoltage protection (OVP) at +15% of programmed VOUT, and overtemperature shutdown at 150°C with 10°C hysteresis. These protections operate autonomously without external components. OVP disables the internal switch immediately upon detection, safeguarding downstream circuitry such as LCD drivers or RF amplifiers.
Can MIC2605YML-TR operate from a 5V input to generate 18V output?
Yes, the MIC2605YML-TR supports 4.5V to 20V input and can reliably generate 18V output from a 5V source. At VIN = 5V and VOUT = 18V, the required duty cycle is ~72%, well below the 85% maximum limit. Efficiency remains >82% under these conditions (per Figure 2-8), and stability is ensured using recommended 10 μH inductor and X5R/X7R ceramic capacitors.
MIC2605YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 4.5V
- Voltage - Output (Max):
- 40V (Switch)
- Current - Output:
- 500mA (Switch)
- Frequency - Switching:
- 1.2MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MLF® (2x2)
MIC2605YML-TR FAQ
1.How can I place an order for MIC2605YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2605YML-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 MIC2605YML-TR reliable?
The price and inventory of MIC2605YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2605YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2605YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2605YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2605YML-TR?
MIC2605YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2605YML-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 MIC2605YML-TR?
For technical support, including MIC2605YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2605YML-TR requirements.
6.How does Aetrix verify that MIC2605YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2605YML-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 MIC2605YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2605YML-TR?
All MIC2605YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2605YML-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 MIC2605YML-TR part is unused and in its original packaging.
Return procedure for MIC2605YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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