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Microchip Technology MIC2296BD5-TR
- Part No.:
- MIC2296BD5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MIC2296BD5-TR.pdf
- Description:
- IC REG BOOST ADJ 1.2A TSOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,007
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Product details
Overview
MIC2296BD5-TR from Micrel is a 600kHz PWM dc/dc boost switching regulator with internal 34V/1.2A bipolar switch, designed for space-constrained applications requiring 2.5V–10V input and adjustable up to 34V output. It delivers 5V/400mA from a single-cell Li-ion source (3V–4.2V) in a 5-pin Thin SOT-23 package and features <1µA shutdown current, UVLO, and thermal shutdown.
For engineers reviewing the MIC2296BD5-TR datasheet, MIC2296BD5-TR pinout, MIC2296BD5-TR application, or MIC2296BD5-TR equivalent, this page provides verified functional identity, validated pin functions, confirmed electrical specifications, real-world application configurations, and two technically documented alternative parts for design flexibility.
Technical Context
The MIC2296BD5-TR implements constant-frequency current-mode PWM control at 600kHz using an internal oscillator, slope-compensated current amplifier, and gm error amplifier referenced to 1.24V. Its bipolar switch architecture enables high peak-current capability without external MOSFET drivers.
It operates in continuous conduction mode with internal compensation for stable regulation across load and line variations, supports ceramic output capacitors as low as 2.2µF, and maintains regulation over –40°C to +125°C junction temperature. The BD5 variant lacks OVP functionality and uses a simplified 5-pin ground-return configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switch Current Limit | 1.2A typical - supports ≥400mA output at 5V with margin for transient loads |
| Oscillator Frequency | 600kHz ±12.5% - enables use of compact 4.7–10µH inductors and low-profile ceramics |
| Feedback Voltage | 1.24V ±1% - sets output via R1/R2 divider; enables precise 5V, 9V, 12V, or 24V regulation |
| Input Voltage Range | 2.5V to 10V - compatible with single-cell Li-ion (3–4.2V), 3.3V rails, and 5V sources |
| Shutdown Current | <1µA - preserves battery life in always-on or low-power standby systems |
| UVLO Threshold | 2.1V typical - prevents erratic startup during brown-out conditions |
| Max Duty Cycle | 95% - supports wide VIN-to-VOUT ratios (e.g., 3.6V → 15V) |
Pinout & Package
Package: 5-pin Thin SOT-23 (3.0mm × 1.7mm × 1.3mm height), RoHS-compliant, lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - FB | Feedback Input | Senses output voltage via resistor divider; regulates VOUT = 1.24V × (1 + R1/R2) |
| 2 - GND | Ground Return | Common analog and power return path; must be low-impedance connection to PCB ground plane |
| 3 - EN | Enable Control | Logic-high (>1.5V) enables regulation; logic-low (<0.4V) disables switch and reduces quiescent current to <1µA |
| 4 - VIN | Input Supply | Accepts 2.5–10V DC; requires ≥1µF ceramic capacitor placed near pin for noise suppression |
| 5 - SW | Switch Node | Connects to inductor and Schottky diode anode; carries pulsed 1.2A bipolar collector current |
Key Features
| Feature | Design Value |
|---|---|
| Internal 1.2A Bipolar Switch | Eliminates need for external MOSFET and driver; reduces BOM count and layout area in portable boost designs |
| 600kHz Fixed-Frequency PWM | Enables use of small 4.7–10µH inductors and 2.2–10µF X5R/X7R ceramics - cuts solution size by >40% vs. lower-frequency alternatives |
| Stable with Ceramic Output Caps | Supports low-ESR MLCCs down to 2.2µF - avoids bulkier, higher-ESR tantalum or electrolytic capacitors |
| Ultra-Low Shutdown Current | <1µA ensures minimal battery drain in sleep modes - critical for coin-cell or energy-harvesting systems |
| Integrated UVLO & Thermal Shutdown | Prevents operation outside safe voltage/temperature windows - eliminates need for discrete protection circuitry |
Applications
| Organic EL Display Power | TFT-LCD Bias Supply |
|---|---|
|
Use Scenario: Powering monochrome or color OLED panels requiring 12–15V bias from 3.6V Li-ion battery. IC Role / Device Role / Timing Role: Primary boost regulator generating stable high-voltage rail with fast transient response to pixel refresh demands. Use Value: Delivers 15V/100mA with <1% load regulation and low output ripple - prevents display flicker or grayscale distortion. |
Use Scenario: Generating positive gate drive voltage (e.g., +15V) and negative common electrode voltage (e.g., –10V) for TFT-LCD column drivers. IC Role / Device Role / Timing Role: Core positive-output boost stage; paired with inverting charge pump or Cuk converter for dual-rail generation. Use Value: 600kHz operation minimizes EMI coupling into sensitive analog video lines; internal compensation ensures stability with small 4.7µH inductors. |
| DSL Line Card 12V Supply | Multi-Output DC/DC Converter |
|
Use Scenario: Providing isolated 12V auxiliary supply from 3.3V or 5V backplane in ADSL/VDSL line interface cards. IC Role / Device Role / Timing Role: Non-isolated step-up stage feeding downstream isolated DC/DC or LDOs. Use Value: High efficiency (>84% at 3.6V→12V/100mA) extends thermal margin in densely packed telecom modules. |
Use Scenario: Serving as primary boost stage in multi-rail power architectures (e.g., 5V + 12V + –5V) for industrial controllers or test equipment. IC Role / Device Role / Timing Role: Master regulated output generator; enables synchronized switching with secondary regulators to reduce system ripple. Use Value: Fixed 600kHz frequency simplifies EMI filtering and allows shared input capacitance across multiple converters. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61088RHLR | 2.7–12V input, 1.5A switch, 500kHz–2MHz adjustable frequency, integrated MOSFETs, no bipolar switch | Requires external compensation; supports wider VIN range but needs larger inductor for same output current | Preferred when programmable frequency or higher input voltage tolerance is required; not drop-in due to different pinout and control scheme |
| MAX17065ETA+ | 2.6–5.5V input, 1.2A switch, 1.2MHz fixed frequency, internal compensation, 1.215V feedback reference | Limited to ≤5.5V input; optimized for ultra-compact 3.3V→5V conversion, not suitable for 3.6V→15V or higher | Better fit for low-input, high-efficiency 3.3V→5V apps; unsuitable for Li-ion full-range or >12V outputs due to VIN and VSW limits |
Compared with TPS61088RHLR and MAX17065ETA+, the MIC2296BD5-TR offers superior bipolar switch ruggedness for high-VOUT (>12V) and wide-VIN (2.5–10V) applications, while maintaining minimal external component count and proven stability with ceramic capacitors - making it optimal for cost-sensitive, space-constrained boost designs where 600kHz operation balances size and efficiency.
Availability
MIC2296BD5-TR is available at Aetrix Electronics and suitable for organic EL display power supplies, TFT-LCD bias generation, and DSL line card auxiliary 12V conversion requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for MIC2296BD5-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 analog and mixed-signal semiconductor company headquartered in San Jose, CA, specializing in power management, timing, and interface ICs before its acquisition by Microchip Technology in 2015.
The MIC2296 product line was engineered for high-power-density portable boost conversion, targeting battery-powered displays, handheld instrumentation, and telecom subsystems where small footprint, low quiescent current, and robust bipolar switching were critical design requirements.
FAQ
What is the maximum output voltage achievable with the MIC2296BD5-TR?
The MIC2296BD5-TR supports adjustable output voltage up to 34V, set by the external feedback resistor divider (VOUT = 1.24V × (1 + R1/R2)). This limit is enforced by the internal switch's 34V breakdown rating and is confirmed in the Absolute Maximum Ratings table. Note that the BD5 variant does not include OVP circuitry - external clamping or monitoring is recommended for safety-critical >12V applications.
Does the MIC2296BD5-TR require an external Schottky diode, and what are the key selection criteria?
Yes, the MIC2296BD5-TR requires an external Schottky diode connected between the SW pin and output capacitor. Per the datasheet, the diode must withstand the full output voltage (e.g., ≥40V for 34V VOUT) and conduct peak inductor current (≥1.2A). Recommended parts include 40V/1A Schottky diodes such as the SS34 or BAS40 - selected for low forward voltage (≤0.5V) and fast recovery to minimize conduction and switching losses.
Can the MIC2296BD5-TR operate from a 3.3V input to generate 5V at 400mA, and what efficiency can be expected?
Yes - the MIC2296BD5-TR is explicitly validated for 3.3V→5V/400mA conversion in the datasheet's application diagrams. At TA = 25°C, typical efficiency exceeds 88% under these conditions, as shown in Figure 4 (5V Output with L = 4.7µH). Efficiency remains >84% across the full –40°C to +125°C junction range, supported by internal thermal shutdown and stable current-mode control.
What is the purpose of the EN pin on the MIC2296BD5-TR, and how should it be interfaced?
The EN pin on the MIC2296BD5-TR is a logic-controlled enable input: applying ≥1.5V (typical) enables regulation, while ≤0.4V (typical) forces shutdown with <1µA quiescent current. It is TTL/CMOS-compatible and may be driven directly from microcontroller GPIO or open-drain logic. No pull-up is required - the internal enable threshold is tightly specified, and the pin draws only 20–40µA when active, minimizing control-side loading.
Is the MIC2296BD5-TR pin-compatible with the MIC2296BML variant?
No - the MIC2296BD5-TR (5-pin Thin SOT-23) and MIC2296BML (8-pin 2×2mm MLF) have fundamentally different pinouts, grounding schemes (GND vs AGND/PGND), and feature sets. The BML includes OVP, AGND, PGND, and OVP pins absent in BD5; BD5 merges ground into a single GND pin. They are functionally similar but not mechanically or electrically interchangeable - PCB layout and schematic must be redesigned for each package.
MIC2296BD5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- 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:
- 600kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MIC2296BD5-TR FAQ
1.How can I place an order for MIC2296BD5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2296BD5-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 MIC2296BD5-TR reliable?
The price and inventory of MIC2296BD5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2296BD5-TR is usually 5 days.
3.What payment methods are accepted for MIC2296BD5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2296BD5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2296BD5-TR?
MIC2296BD5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2296BD5-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 MIC2296BD5-TR?
For technical support, including MIC2296BD5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2296BD5-TR requirements.
6.How does Aetrix verify that MIC2296BD5-TR is sourced from the original manufacturer or authorized distributors?
All MIC2296BD5-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 MIC2296BD5-TR meets industry standards.
7.What is the process for return or replacement of MIC2296BD5-TR?
All MIC2296BD5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2296BD5-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 MIC2296BD5-TR part is unused and in its original packaging.
Return procedure for MIC2296BD5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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