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Microchip Technology MIC2295BD5
- Part No.:
- MIC2295BD5
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MIC2295BD5.pdf
- Description:
- IC REG BOOST ADJ 1.2A TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:3,985
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Product details
Overview
MIC2295BD5 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 operates from 2.5 V to 10 V input, delivers adjustable output up to 34 V, and achieves >85% efficiency at 5 V/500 mA output in Thin SOT23-5 packaging - ideal for Li-ion-powered OLED displays and TFT-LCD bias supplies.
For engineers reviewing the MIC2295BD5 datasheet, MIC2295BD5 pinout, MIC2295BD5 application, or MIC2295BD5 equivalent, key selection criteria include its fixed 1.2 MHz switching frequency, 1.24 V feedback reference, <1 µA shutdown current, –40°C to +125°C junction temperature range, and compatibility with ceramic input/output capacitors as small as 2.2 µF.
Technical Context
The MIC2295BD5 implements constant-frequency current-mode PWM control using an internal 1.2 MHz oscillator, slope-compensated current amplifier, and gm error amplifier. Its architecture enables fast transient response and stable regulation without external compensation components.
Unlike the MLF-packaged MIC2295BML, the MIC2295BD5 lacks OVP and N/C/AGND/PGND pins - it uses only five terminals (VIN, EN, SW, FB, GND) in a simplified topology optimized for cost-sensitive, single-output boost applications where overvoltage protection is implemented externally.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.2 MHz ±12.5% - enables use of compact 4.7–10 µH inductors and sub-10 µF ceramic output capacitors. |
| Input Voltage Range | 2.5 V to 10 V - supports single-cell Li-ion (3.0–4.2 V), 3.3 V, and 5 V rails without pre-regulation. |
| Feedback Reference | 1.24 V ±1% - sets output voltage via resistor divider (VOUT = 1.24 × (1 + R1/R2)); allows precise 5 V, 12 V, or 15 V generation. |
| Switch Current Limit | 1.2 A typical - supports ≥500 mA output at 5 V from 3.6 V input with appropriate inductor and diode selection. |
| Shutdown Current | <1 µA - minimizes battery drain in standby mode for portable devices. |
| Junction Temp Range | –40°C to +125°C - ensures reliable operation in automotive cabin, industrial, and handheld environments. |
| Max Duty Cycle | 85% - limits minimum input-to-output ratio; e.g., requires VIN ≥ 3.5 V for stable 12 V output. |
Pinout & Package
The MIC2295BD5 is housed in a low-profile Thin SOT23-5 package (1.6 mm × 2.9 mm × 1.1 mm), optimized for high-density PCB layouts and reflow-compatible assembly.
| 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 Return | Common analog and power ground reference; must be connected to low-impedance PCB ground plane. |
| 3 (FB) | Feedback Input | Senses output voltage via resistor divider; regulates VOUT to 1.24 V reference - high-impedance node (±450 nA bias). |
| 4 (EN) | Enable Control | Logic-high (>1.5 V) enables regulation; logic-low (<0.4 V) disables switch and reduces quiescent current to <1 µA. |
| 5 (VIN) | Power Input | Supplies internal circuitry and switch; accepts 2.5–10 V with UVLO activation at ~2.1 V. |
Key Features
| Feature | Design Value |
|---|---|
| Internal 34 V / 1.2 A Bipolar Switch | Eliminates need for external MOSFET and driver; supports 15 V/100 mA or 5 V/500 mA outputs from Li-ion sources. |
| 1.2 MHz Fixed-Frequency PWM | Reduces EMI filtering requirements and enables use of miniature 10 µH inductors and 2.2 µF ceramic capacitors. |
| Internal Compensation | Removes need for external compensation network - simplifies design and improves stability across load/temperature. |
| UVLO with 2.1 V Threshold | Prevents erratic startup during battery brownout; ensures clean enable/disable sequencing below 2.5 V input. |
| Thermal Shutdown Protection | Activates at 150°C junction temperature with 10°C hysteresis - prevents permanent damage under overload or poor heatsinking. |
Applications
| Organic EL Display Power | TFT-LCD Bias Supply |
|---|---|
Use Scenario: Powering monochrome or color OLED panels requiring 12–15 V bias from a 3.6 V Li-ion cell in wearables or medical monitors. IC Role / Device Role / Timing Role: Primary boost converter generating regulated high-voltage rail; operates continuously at 1.2 MHz with minimal output ripple. Use Value: Enables compact, low-noise display power with >85% efficiency and no external compensation - reducing BOM count by 3–4 passive components. | Use Scenario: Providing gate-on/gate-off voltages (e.g., +15 V / –10 V) for active-matrix LCDs in industrial HMIs or portable test equipment. IC Role / Device Role / Timing Role: Positive-output stage in dual-rail supply; paired with inverting charge pump or second MIC2295BD5 for negative rail. Use Value: Delivers stable 15 V @ 100 mA with <1% load regulation - critical for consistent pixel charging and contrast control. |
| Flash LED Driver | DSL Line Card 12 V Supply |
Use Scenario: Driving high-brightness white LEDs in smartphone camera modules with programmable current via analog dimming. IC Role / Device Role / Timing Role: Constant-voltage source feeding external current-sink LED driver IC; supports burst-mode dimming via EN pin. Use Value: Achieves 5 V @ 500 mA from 3.6 V input with <1 µA shutdown current - extends battery life between photo sessions. | Use Scenario: Generating isolated 12 V bias for DSL transceivers and line drivers in customer-premises equipment (CPE). IC Role / Device Role / Timing Role: Primary DC-DC stage converting 3.3 V system rail to 12 V analog supply; operates in continuous conduction mode. Use Value: Meets stringent 12 V ±5% tolerance and <20 mVpp ripple requirements while fitting within 10 mm² board area. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | 1.5 MHz switching, 28 V/0.5 A integrated FET, requires external compensation. | Lacks internal compensation and 1.2 A switch - lower output current capability and more complex loop tuning. | Choose when higher frequency (1.5 MHz) and smaller inductors are prioritized over output current and design simplicity. |
| MAX1706EUT+T | Fixed 5 V output, 1.2 MHz, 1.2 A switch, no adjustable FB - no OVP or thermal shutdown. | Non-adjustable output limits flexibility; missing protection features reduce robustness in unattended systems. | Choose only for cost-sensitive, fixed-5V applications where external feedback and protection are already implemented. |
Compared with TPS61040DRVR and MAX1706EUT+T, the MIC2295BD5 offers superior output current headroom (1.2 A), full internal compensation, and comprehensive protection (UVLO, thermal shutdown), making it optimal for adjustable, high-reliability boost designs in portable and industrial settings.
Availability
MIC2295BD5 is available at Aetrix Electronics and suitable for organic EL display power, TFT-LCD bias supplies, flash LED drivers, DSL line card supplies, and multi-output DC-DC converters requiring stable component supply across extended temperature ranges.
Supply support for MIC2295BD5 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 interface ICs before its acquisition by Microchip Technology in 2015. Known for high-reliability, thermally robust regulators.
The MIC2295 product line was engineered for high-power-density, low-profile boost conversion in battery-powered portable electronics - emphasizing integration, efficiency, and ease of use in space-constrained designs.
FAQ
What is the maximum output voltage achievable with MIC2295BD5?
The MIC2295BD5 supports adjustable output voltage up to 34 V, set by the external feedback resistor divider (VOUT = 1.24 V × (1 + R1/R2)). Its internal 34 V switch rating and 85% max duty cycle allow stable 15 V/100 mA or 5 V/500 mA operation from 3.6 V input. Note that output over-voltage protection is not implemented in the BD5 variant - external clamping is recommended for fault tolerance.
Does MIC2295BD5 require external compensation components?
No, the MIC2295BD5 features fully internal compensation, eliminating the need for external RC networks or type-II/III compensators. This simplifies layout, reduces BOM count, and ensures stable operation across –40°C to +125°C with standard ceramic output capacitors (e.g., 2.2–4.7 µF X5R). The internal gm error amplifier and slope-compensated current-mode architecture provide robust transient response without user tuning.
Can MIC2295BD5 be used in SEPIC or inverting configurations?
Yes, the MIC2295BD5 can be configured in SEPIC topology (as documented in Micrel's Application Information section) using two coupled inductors and appropriate feedback scaling. However, it is not designed for true inverting (buck-boost) operation without additional external switches or diodes. For inverting applications, pairing MIC2295BD5 with an external P-channel MOSFET or using a dedicated inverting controller is required - the BD5 variant lacks dedicated inverting control logic or complementary drive outputs.
What is the recommended inductor value for MIC2295BD5 in a 5 V/500 mA application?
For a 5 V/500 mA boost application from 3.6 V input, a 4.7 µH to 10 µH shielded power inductor rated for ≥1.5 A saturation current is recommended. Micrel's reference design uses 10 µH (Sumida CDRH4D18); however, 4.7 µH (e.g., Murata LQH32CN4R7M23) reduces size and improves light-load efficiency. Ensure DCR < 150 mΩ to maintain >85% efficiency and avoid thermal derating at full load.
How does the EN pin functionality differ between MIC2295BD5 and MIC2295BML?
The EN pin behavior is identical across both variants: logic-high (>1.5 V) enables regulation; logic-low (<0.4 V) disables the switch and reduces quiescent current to <1 µA. However, MIC2295BD5 lacks the OVP, AGND, PGND, and N/C pins present on the MLF-8L package - meaning EN functionality remains unchanged, but system-level protection (e.g., output overvoltage clamping) must be implemented externally when using MIC2295BD5.
MIC2295BD5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- TSOT-23-5
MIC2295BD5 FAQ
1.How can I place an order for MIC2295BD5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2295BD5 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 MIC2295BD5 reliable?
The price and inventory of MIC2295BD5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2295BD5 is usually 5 days.
3.What payment methods are accepted for MIC2295BD5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2295BD5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2295BD5?
MIC2295BD5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2295BD5 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 MIC2295BD5?
For technical support, including MIC2295BD5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2295BD5 requirements.
6.How does Aetrix verify that MIC2295BD5 is sourced from the original manufacturer or authorized distributors?
All MIC2295BD5 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 MIC2295BD5 meets industry standards.
7.What is the process for return or replacement of MIC2295BD5?
All MIC2295BD5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC2295BD5, 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 MIC2295BD5 part is unused and in its original packaging.
Return procedure for MIC2295BD5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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