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Microchip Technology MIC2295BML-TR
- Part No.:
- MIC2295BML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 8-VFDFN Exposed Pad, 8-MLF®
- Datasheet:
-
MIC2295BML-TR.pdf
- Description:
- IC REG BOOST ADJ 1.2A 8MLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,364
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Product details
Overview
MIC2295BML-TR from Micrel is a high-power-density 1.2 MHz PWM boost regulator with an integrated 34 V / 1.2 A bipolar switch, designed for space-constrained DC/DC conversion in portable electronics. It delivers up to 15 V @ 100 mA from a 3–4.2 V Li-ion input and features output over-voltage protection (OVP) clamping to 34 V - exclusive to the MLF-8L package.
For engineers reviewing the MIC2295BML-TR datasheet, MIC2295BML-TR pinout, MIC2295BML-TR application, or MIC2295BML-TR equivalent, key selection criteria include its 2 mm × 2 mm leadless MLF-8L footprint, OVP functionality, 1.24 V feedback reference, 1.2 MHz fixed-frequency current-mode control, and –40°C to +125°C junction temperature range.
Technical Context
The MIC2295BML-TR implements constant-frequency current-mode PWM control using an internal 1.2 MHz oscillator, slope-compensated ramp generator, and gm error amplifier. Its bipolar switch enables high peak-current capability without external MOSFET drivers.
It integrates OVP functionality via a dedicated OVP pin tied to VOUT, triggering shutdown if feedback is lost - a safety feature absent in the SOT-23 variant. The device uses analog ground (AGND) and power ground (PGND) separation to minimize noise coupling in high-switching-noise environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Current Limit | 1.2 A - supports ≥100 mA output at 15 V from 3.6 V input with margin for transient loads. |
| Oscillator Frequency | 1.2 MHz - enables use of sub-10 µH inductors and <10 µF ceramic output capacitors, reducing board area. |
| Feedback Reference Voltage | 1.24 V ±1% - sets output voltage via external resistor divider (VOUT = 1.24 V × (1 + R1/R2)). |
| Input Voltage Range | 2.5 V to 10 V - compatible with single-cell Li-ion (3–4.2 V), 3.3 V, and 5 V rails. |
| OVP Threshold | 32 V typical (30–34 V) - protects downstream circuitry during open-feedback or load-dump faults. |
| Shutdown Current | <1 µA - preserves battery life in standby mode for portable applications. |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and automotive cabin-temperature environments. |
Pinout & Package
The MIC2295BML-TR is housed in a 2 mm × 2 mm, 8-lead leadless MicroLeadFrame (MLF™) package with exposed thermal pad (EP). This RoHS-compliant, surface-mount package provides low thermal resistance (θJA = 93°C/W) and supports reflow soldering.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Switch Node | Collector of internal bipolar transistor; connects to inductor and Schottky diode anode - carries high dI/dt switching current. |
| 2 (GND) | Ground | No-connect pin - isolated from die; used for mechanical anchoring only. |
| 3 (FB) | Feedback Input | Senses output voltage via resistor divider; regulates VOUT to 1.24 V reference with ±1% accuracy. |
| 4 (EN) | Enable Input | Active-high logic control (1.5 V threshold); disables switching and reduces quiescent current to <1 µA. |
| 5 (VIN) | Supply Input | Primary power input (2.5–10 V); powers internal bias circuits and switch driver. |
| 6 (OVP) | OVP Sense Input | Monitors VOUT directly; triggers shutdown if voltage exceeds 34 V - unique to MLF package. |
| 7 (AGND) | Analog Ground | Reference return for FB, EN, and OVP pins; must be routed separately from PGND to avoid noise injection. |
| 8 (PGND) | Power Ground | Return path for switch current and inductor; connects to EP pad for thermal and EMI performance. |
| EP | Exposed Pad | Thermal and electrical ground connection; must be soldered to PCB copper pour for θJA compliance. |
Key Features
| Feature | Design Value |
|---|---|
| Output Over-Voltage Protection | Dedicated OVP pin clamps output to ≤34 V during feedback loss or open-load fault - prevents SW node overstress and downstream damage. |
| High-Frequency 1.2 MHz Operation | Enables compact 4.7–10 µH inductors and 2.2–4.7 µF X5R/X7R ceramic capacitors, minimizing solution size and cost. |
| Internal Compensation | Eliminates external compensation network; ensures stable loop response across input/output/load variations without tuning. |
| Separate AGND and PGND | Reduces noise coupling between sensitive analog circuitry and high-current power paths - improves regulation accuracy and EMI. |
| UVLO with Hysteresis | Starts regulation only above 2.1 V and holds until VIN drops below 1.8 V - prevents erratic startup during brown-out conditions. |
Applications
| Organic EL Display Power Supply | TFT-LCD Bias Generation |
|---|---|
Use Scenario: Driving monochrome or color OLED panels requiring 12–15 V bias from a 3.6 V Li-ion source in handheld medical or industrial displays. IC Role / Device Role / Timing Role: Primary boost converter supplying regulated high-voltage rail; operates continuously at 1.2 MHz to avoid audible noise. Use Value: OVP prevents panel damage during feedback disconnection; small MLF-8L footprint saves space on compact display flex PCBs. |
Use Scenario: Generating gate-on/gate-off voltages (e.g., +15 V / –10 V) for TFT-LCD column drivers in automotive infotainment systems. IC Role / Device Role / Timing Role: Positive-output boost stage feeding inverting charge pump; synchronized 1.2 MHz switching minimizes interference with display timing signals. Use Value: –40°C to +125°C rating ensures reliability in vehicle cabin environments; low shutdown current extends battery runtime in always-on modules. |
| Flash LED Driver Power Stage | DSL Line Card 12 V Supply |
Use Scenario: Providing 5–9 V at 300–400 mA to white LED arrays in smartphone camera modules with tight thermal constraints. IC Role / Device Role / Timing Role: Constant-current-capable boost controller (via external sense resistor); fast transient response maintains brightness during burst illumination. Use Value: 1.2 A switch handles peak LED currents without external FET; MLF thermal pad dissipates heat directly into PCB. |
Use Scenario: Generating isolated 12 V rail for DSL line interface ICs from a 3.3 V or 5 V system supply in broadband access equipment. IC Role / Device Role / Timing Role: Non-isolated boost converter operating in continuous conduction mode; fixed 1.2 MHz frequency simplifies EMI filtering. Use Value: High efficiency (>85% at 12 V/120 mA) reduces thermal load on densely packed line cards; OVP guards against regulator runaway during hot-swap events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | CMOS-based, 28 V switch, 0.5 A limit, 1.0 MHz, no OVP, SOT-23-6 | Lacks OVP and thermal robustness; lower current capacity limits output power | Select when cost sensitivity outweighs fault protection and 125°C operation. |
| MAX1706BETA+ | Bipolar-based, 28 V switch, 1.0 A limit, 1.2 MHz, no OVP, 10-pin TDFN | Missing OVP and narrower input range (2.7–5.5 V); requires external compensation | Prefer for legacy designs already using Maxim's evaluation boards and layout guidelines. |
Compared with TPS61040DRVR and MAX1706BETA+, the MIC2295BML-TR offers superior fault resilience via integrated OVP, higher 1.2 A switch current for increased output power, and extended –40°C to +125°C operation - making it optimal for ruggedized portable and industrial boost applications where reliability is critical.
Availability
MIC2295BML-TR is available at Aetrix Electronics and suitable for organic EL display power supplies, TFT-LCD bias generation, and flash LED driver circuits requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2295BML-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
Micrel Inc. was a U.S.-based semiconductor company specializing in power management, analog, and RF solutions before its acquisition by Microchip Technology in 2015. It emphasized high-reliability, thermally efficient ICs for portable and industrial systems.
The MIC2295 product line was engineered to deliver high power density in ultra-compact packages for battery-powered devices - specifically targeting space- and thermal-constrained boost applications where OVP and wide temperature operation are essential.
FAQ
What is the function of the OVP pin on the MIC2295BML-TR?
The OVP pin on the MIC2295BML-TR monitors the output voltage directly. When tied to VOUT, it triggers internal shutdown if voltage exceeds ~32 V (30–34 V range), preventing damage during feedback resistor disconnection or open-load faults. This feature is exclusive to the MLF-8L package and is disabled when the OVP pin is grounded. The MIC2295BML-TR relies on this pin for fail-safe operation in mission-critical boost applications.
Can the MIC2295BML-TR operate from a 2.5 V input to generate 5 V at 400 mA?
Yes - the MIC2295BML-TR supports 2.5 V to 10 V input and can deliver 5 V at 400 mA using a 4.7 µH inductor and appropriate feedback resistors (e.g., R1 = 5.62 kΩ, R2 = 1.87 kΩ). Efficiency exceeds 85% at 3.6 V input per typical curves, and the 1.2 A switch current provides sufficient headroom. Layout must separate AGND and PGND, and the EP pad must be thermally connected to maximize performance of the MIC2295BML-TR.
Does the MIC2295BML-TR require external compensation components?
No - the MIC2295BML-TR features fully internal compensation, eliminating the need for external RC networks. This simplifies design, reduces BOM count, and ensures stable operation across its full operating range (–40°C to +125°C, 2.5–10 V input, 3–34 V output) without tuning. The internal compensation is optimized for ceramic output capacitors (2.2–10 µF) and inductors (4.7–10 µH), enabling rapid prototyping of the MIC2295BML-TR in compact boost designs.
How does the MIC2295BML-TR handle thermal management in the MLF-8L package?
The MIC2295BML-TR uses an exposed thermal pad (EP) on the underside of its 2 mm × 2 mm MLF-8L package, with a specified θJA of 93°C/W. Effective thermal management requires soldering the EP pad to a minimum 100 mm² PCB copper pour connected to internal ground planes via ≥4 thermal vias. This configuration maintains junction temperature within –40°C to +125°C limits under full load, ensuring long-term reliability of the MIC2295BML-TR in sealed or high-ambient environments.
Is the MIC2295BML-TR pin-compatible with other variants in the MIC2295 family?
No - the MIC2295BML-TR (MLF-8L) is not pin-compatible with the MIC2295BD5 (Thin SOT-23-5). The MLF-8L adds OVP, AGND, PGND, and N/C pins not present in the SOT-23 variant, and relocates GND and SW functions. Layouts must be redesigned for the MIC2295BML-TR; migration requires updating schematic symbols, footprints, and routing to accommodate the 8-pin leadless structure and dual-ground architecture.
MIC2295BML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-VFDFN Exposed Pad, 8-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 10V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 34V (Switch)
- Current - Output:
- 1.2A (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)
MIC2295BML-TR FAQ
1.How can I place an order for MIC2295BML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2295BML-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 MIC2295BML-TR reliable?
The price and inventory of MIC2295BML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2295BML-TR is usually 5 days.
3.What payment methods are accepted for MIC2295BML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2295BML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2295BML-TR?
MIC2295BML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2295BML-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 MIC2295BML-TR?
For technical support, including MIC2295BML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2295BML-TR requirements.
6.How does Aetrix verify that MIC2295BML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2295BML-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 MIC2295BML-TR meets industry standards.
7.What is the process for return or replacement of MIC2295BML-TR?
All MIC2295BML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2295BML-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 MIC2295BML-TR part is unused and in its original packaging.
Return procedure for MIC2295BML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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