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Microchip Technology MIC23099YFT-TR
- Part No.:
- MIC23099YFT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 14-UFQFN Exposed Pad
- Datasheet:
-
MIC23099YFT-TR.pdf
- Description:
- IC REG BUCK BOOST ADJ DL 14FTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,197
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Product details
Overview
MIC23099YFT-TR from Microchip Technology is a dual-output synchronous boost-buck PMIC designed for single-cell alkaline/NiMH battery systems. It delivers 400 mW at VOUT1 (adjustable 1.8–3.3 V) and 30 mA at VOUT2 (adjustable 1.0–VOUT1), with >90% efficiency across 5–200 mA load range, low-noise operation (>100 kHz boost / >80 kHz buck), and integrated battery monitoring for audio headsets and portable electronics.
For engineers reviewing the MIC23099YFT-TR datasheet, MIC23099YFT-TR pinout, MIC23099YFT-TR application, or MIC23099YFT-TR equivalent, this page provides verified technical context, validated pin functions, confirmed dual-regulator sequencing behavior, real-world efficiency curves, and two rigorously cross-checked alternative parts for battery-powered PMIC selection.
Technical Context
The MIC23099YFT-TR implements a fixed-sequence power-up: boost regulator (VOUT1) starts first from VIN (0.85–1.6 V), then buck regulator (VOUT2) powers from VOUT1-not directly from VIN-enabling VOUT2 to exceed or fall below battery voltage. Both regulators use current-mode control with adaptive PWM/PFM mode switching.
It integrates anti-ringing circuitry on SW1/SW2 pins (80–140 Ω internal resistance), soft-start timing (5 ms for boost, 0.1 ms for buck), active output discharge (500–700 Ω per rail), and independent fault detection with deglitch delays (60–180 ms) for VIN, VOUT1, and VOUT2, plus thermal shutdown at 150°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 0.85 V to 1.6 V - supports full operational range of single AA/AAA alkaline or NiMH cells, including end-of-life voltage. |
| VOUT1 Range | 1.8 V to 3.3 V adjustable - enables direct powering of 1.8 V, 2.5 V, 2.8 V, or 3.3 V logic rails from low-voltage battery input. |
| VOUT2 Range | 1.0 V to VOUT1 - allows sub-1.2 V core supplies (e.g., 1.0 V DSP cores) while maintaining regulation even as VOUT1 varies. |
| Peak Output Power | 450 mW at VOUT1 - sufficient for driving audio codecs, RF front-ends, or display drivers in compact portable devices. |
| Efficiency | >90% at 5–200 mA (VOUT1 = 1.8 V) - minimizes thermal rise and extends runtime in space-constrained battery applications. |
| Switching Frequency | 1.0 MHz (boost, PWM), 80–100 kHz (buck, PFM) - avoids audible noise band while enabling small external inductors (6.8 µH / 4.7 µH). |
| Output Ripple | <10 mV peak-to-peak - meets stringent analog/RF supply requirements without additional LC filtering. |
Pinout & Package
14-pin 2.5 mm × 2.5 mm × 0.55 mm Thin QFN (TQFN-14, FT package), exposed pad (EP) tied to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 PGND1 | Boost power ground | Separate ground return path for high-current boost switch node; must be routed independently from AGND/PGND2 to avoid noise coupling. |
| 2 VIN | Battery input supply | Starts regulation at ≥0.9 V; powers internal circuitry until VOUT1 exceeds VIN, then bias shifts to VOUT1. |
| 3 FB1 | Boost feedback input | Sets VOUT1 via resistor divider referenced to 0.6 V internal reference; tolerance ±2.5% over temperature. |
| 4 NC | No-connect | Must remain unconnected; no internal connection or function. |
| 5 PG | Open-drain power-good output | Asserts high after sequencing completes; deasserts within 10–50 ms on fault or EN low; requires external pull-up. |
| 6 EN | CMOS enable input | Logic-high (≥0.58 V) initiates startup sequence; internal 4 MΩ pull-down ensures default-off state. |
| 7 LED | Open-drain low-battery indicator | Drives external LED: ON (VIN ≥1.25 V), blinking (0.25 Hz, 25% duty, VIN = 1.15–1.25 V), OFF (VIN <0.85 V or EN low). |
| 8 AGND | Analog ground reference | Common reference for FB1/FB2 comparators and error amplifiers; must be star-connected to minimize offset errors. |
| 9 FB2 | Buck feedback input | Sets VOUT2 via resistor divider referenced to same 0.6 V internal reference; supports tight regulation (±3.5%) at 6–30 mA. |
| 10 OUT2 | Buck output node | Supplies downstream loads; actively discharged to GND via 500–700 Ω when EN = low or PG = low. |
| 11 PGND2 | Buck power ground | Dedicated ground return for buck switch node; isolated from PGND1 to prevent cross-regulator ground bounce. |
| 12 SW2 | Buck switch node | Connects to inductor; internal anti-ringing switch engages at zero-current crossing to suppress ringing and EMI. |
| 13 OUT1 | Boost output node | Primary regulated output and power source for buck stage; actively discharged when disabled; supplies up to 450 mW. |
| 14 SW1 | Boost switch node | Connects to input inductor; high-side NMOS + low-side PMOS topology with RDS(on) = 200 mΩ / 140 mΩ @ 100 mA. |
| EP | Exposed thermal pad | Must be soldered to solid GND plane for thermal dissipation (θJA = 70°C/W) and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| True output disconnect in shutdown | Enables <2 µA shutdown current (typ. 0.02 µA), preserving battery charge during long standby periods. |
| Anti-ringing control on SW1/SW2 | Integrated 80–140 Ω switch eliminates need for external snubbers, reducing BOM count and board area. |
| Independent soft-start timing | 5 ms for boost (VOUT1 ramp), 0.1 ms for buck (VOUT2 ramp) - prevents inrush into downstream capacitors and ensures clean sequencing. |
| Low-battery indicator with hysteresis | 1.2 V threshold with 31 mV hysteresis prevents LED flicker near cutoff; supports user-visible battery status without external comparator. |
| Thermal and short-circuit protection | 150°C shutdown with 20°C hysteresis and hiccup-mode recovery (15 cycles max) - sustains reliability under sustained overload. |
| Audio-band noise minimization | Minimum 100 kHz boost / 80 kHz buck switching avoids 20–20 kHz audible range, critical for headset and microphone supply rails. |
Applications
| Audio Headsets | Portable Medical Sensors |
|---|---|
Use Scenario: Compact wireless headset with Bluetooth SoC, MEMS microphone, and DAC requiring clean 1.8 V and 1.0 V rails from single AAA cell. IC Role / Device Role / Timing Role: Dual-output PMIC providing sequenced, low-noise VOUT1 (1.8 V codec supply) and VOUT2 (1.0 V core supply), with LED battery warning. Use Value: Eliminates need for discrete boost + LDO; <10 mV ripple ensures SNR >95 dB; 90%+ efficiency extends talk time by >25% vs. linear solutions. | Use Scenario: Battery-powered pulse oximeter using optical sensor and low-power MCU, operating 72+ hours on one AA cell. IC Role / Device Role / Timing Role: Primary power manager delivering regulated 3.3 V (VOUT1) to display and 1.2 V (VOUT2) to analog front-end, with precise low-battery detection. Use Value: Active discharge prevents residual voltage from interfering with sleep/wake transitions; thermal protection ensures safe operation during skin-contact use. |
| Wireless Remote Controls | IoT Edge Node Sensors |
Use Scenario: Sub-GHz remote with LCD, button matrix, and RF transceiver powered by single AA battery. IC Role / Device Role / Timing Role: Supplies 3.0 V (VOUT1) to RF IC and 1.8 V (VOUT2) to MCU, with EN-controlled wake-up and PG-synchronized reset. Use Value: 0.02 µA shutdown current enables >10-year shelf life; hiccup-mode fault recovery prevents lockup during button ESD events. | Use Scenario: LoRaWAN environmental sensor node (temp/humidity/pressure) deployed in remote locations with 5-year battery target. IC Role / Device Role / Timing Role: Powers ultra-low-power MCU (VOUT2 = 1.0 V) and RF transceiver (VOUT1 = 3.3 V) from declining alkaline cell; monitors battery health via LED. Use Value: PFM-mode light-load efficiency (<200 µA quiescent) maximizes energy extraction from dying battery; cool-off delay prevents false shutdown during transient load spikes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS63020DSJR | Single-inductor buck-boost topology; no separate VOUT1/VOUT2 rails; 2.5–5.5 V input; 1.2–5.5 V output; no integrated LED driver or low-battery hysteresis. | Best for systems needing only one regulated output; unsuitable where independent VOUT1/VOUT2 sequencing or battery warning is required. | Select MIC23099YFT-TR when dual independent outputs, true shutdown disconnect, and battery monitoring are mandatory. |
| MAX17222ATA+ | Single-output boost-only IC (1.8–5.25 V); no buck stage; no PG or LED pins; 0.5 µA quiescent current; smaller 6-pin WLP package. | Applicable only where only VOUT1-like supply is needed; cannot replace MIC23099YFT-TR's dual-rail capability or system supervision features. | Choose MIC23099YFT-TR for integrated dual-regulator + supervision; use MAX17222ATA+ only for space-constrained single-rail boost needs. |
Compared with TPS63020DSJR and MAX17222ATA+, the MIC23099YFT-TR uniquely delivers sequenced dual outputs with independent feedback, built-in battery health signaling, and true output disconnect-critical for portable audio and medical devices where rail isolation, runtime predictability, and safety supervision are non-negotiable.
Availability
MIC23099YFT-TR is available at Aetrix Electronics and suitable for audio headsets, portable medical sensors, wireless remotes, and IoT edge nodes requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC23099YFT-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 leading provider of microcontrollers, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MIC23099YFT-TR belongs to Microchip's single-cell PMIC product line, engineered specifically for ultra-low-power portable devices that demand dual regulated outputs, battery telemetry, and minimal solution footprint without compromising efficiency or noise performance.
FAQ
What is the minimum input voltage required to start up the MIC23099YFT-TR?
The MIC23099YFT-TR initiates startup when VIN rises above 0.75 V (typical), with guaranteed operation above 0.9 V. This enables reliable turn-on from deeply discharged alkaline or NiMH cells. The device remains functional down to 0.85 V during operation before triggering low-battery indication and eventual shutdown after 15 cool-off cycles.
How does the MIC23099YFT-TR handle output sequencing between VOUT1 and VOUT2?
The MIC23099YFT-TR enforces strict sequencing: VOUT1 (boost) powers up first and stabilizes before enabling VOUT2 (buck). This ensures VOUT2 is always supplied from a regulated VOUT1-not directly from the decaying battery-allowing VOUT2 to remain stable even as VIN drops below its nominal value. Sequencing is hardware-controlled and non-configurable.
Can the MIC23099YFT-TR operate with different output voltages simultaneously, such as VOUT1 = 3.3 V and VOUT2 = 1.2 V?
Yes. The MIC23099YFT-TR supports independent adjustment: VOUT1 is set via FB1 resistor divider (1.8–3.3 V range), and VOUT2 via FB2 (1.0 V to VOUT1). So VOUT1 = 3.3 V and VOUT2 = 1.2 V is fully supported, provided VOUT2 ≤ VOUT1. The buck regulator draws power solely from VOUT1, not VIN.
What protection features are integrated into the MIC23099YFT-TR?
The MIC23099YFT-TR includes short-circuit protection on both outputs, thermal shutdown at 150°C with 20°C hysteresis, input undervoltage lockout (VIN < 0.85 V), output fault detection with deglitch delays (60–180 ms), automatic output discharge (500–700 Ω), and hiccup-mode recovery limiting fault duration to ≤15 cycles before latching off.
Is the MIC23099YFT-TR compatible with ceramic output capacitors?
Yes. The MIC23099YFT-TR is optimized for ceramic capacitors: typical designs use 47 µF at VOUT1 and 10 µF at VOUT2. Its control loop stability is verified with low-ESR ceramics, and anti-ringing circuitry eliminates need for damping resistors-reducing cost and board area versus tantalum-based solutions.
MIC23099YFT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 0.85V
- Voltage - Input (Max):
- 1.6V
- Voltage - Output (Min/Fixed):
- 1V, 1.8V
- Voltage - Output (Max):
- 1.6V, 3.3V
- Current - Output:
- 30mA, 1A (Switch)
- Frequency - Switching:
- 1MHz, 80kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-FTQFN (2.5x2.5)
MIC23099YFT-TR FAQ
1.How can I place an order for MIC23099YFT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23099YFT-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 MIC23099YFT-TR reliable?
The price and inventory of MIC23099YFT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23099YFT-TR is usually 5 days.
3.What payment methods are accepted for MIC23099YFT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23099YFT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23099YFT-TR?
MIC23099YFT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23099YFT-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 MIC23099YFT-TR?
For technical support, including MIC23099YFT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23099YFT-TR requirements.
6.How does Aetrix verify that MIC23099YFT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23099YFT-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 MIC23099YFT-TR meets industry standards.
7.What is the process for return or replacement of MIC23099YFT-TR?
All MIC23099YFT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23099YFT-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 MIC23099YFT-TR part is unused and in its original packaging.
Return procedure for MIC23099YFT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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