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Microchip Technology MIC23099YFT-T5
- Part No.:
- MIC23099YFT-T5
- Manufacturer:
- Microchip Technology
- Package:
- 14-UFQFN Exposed Pad
- Datasheet:
-
MIC23099YFT-T5.pdf
- Description:
- IC REG BUCK BOOST ADJ DL 14FTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,705
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Product details
Overview
MIC23099YFT-T5 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 (>80 kHz buck / >100 kHz boost), and integrated battery monitoring for audio headsets and portable medical sensors.
For engineers reviewing the MIC23099YFT-T5 datasheet, MIC23099YFT-T5 pinout, MIC23099YFT-T5 application, or MIC23099YFT-T5 equivalent, this page provides verified technical context, validated pin functions, confirmed dual-regulator sequencing behavior, real-world efficiency curves, and two field-validated alternative parts for battery-powered PMIC selection.
Technical Context
The MIC23099YFT-T5 implements a cascaded power architecture: the synchronous boost regulator (VOUT1) powers up first from VIN (0.85–1.6 V), then supplies the synchronous buck regulator (VOUT2). This enables VOUT2 to operate independently of battery voltage-e.g., generating 1.0 V even as VIN drops to 0.85 V-while maintaining tight regulation via 0.6 V feedback references (FB1/FB2) with ±2.5% tolerance over temperature.
It integrates adaptive PWM/PFM mode switching, anti-ringing control on both SW1 and SW2 nodes (80–140 Ω internal resistance), soft-start timing (5 ms for boost, 0.1 ms for buck), and fault management including thermal shutdown (150°C), hiccup-mode short-circuit protection, and programmable cool-off delay (750–2250 ms) before restart after VIN or output faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 0.85 V to 1.6 V - supports full operation from fresh to depleted single AA/AAA cells without external LDO pre-regulation. |
| VOUT1 Range | 1.8 V to 3.3 V adjustable - sets bias rail for downstream logic or RF circuitry; regulated by 0.6 V FB1 reference with ±2.5% accuracy. |
| VOUT2 Range | 1.0 V to VOUT1 adjustable - enables sub-1.2 V core supply (e.g., 1.0 V for microcontrollers) independent of battery sag. |
| Peak Efficiency | 92% at 100 mA - achieved in PWM mode with 1 MHz boost switching frequency and optimized internal MOSFETs (RHS = 200 mΩ, RLS = 140 mΩ). |
| Quiescent Current | 200 µA typical in PFM mode - extends runtime in always-on sensor nodes; drops to 0.02 µA in shutdown (VEN = 0 V). |
| Output Ripple | <10 mV peak-to-peak - minimized by anti-ringing circuitry and high PSRR (>50 dB at 217 Hz) for noise-sensitive analog/audio stages. |
| Thermal Protection | 150°C shutdown with 20°C hysteresis - prevents damage during sustained overload; junction-to-ambient θJA = 70°C/W in 2.5 mm × 2.5 mm QFN. |
Pinout & Package
14-pin 2.5 mm × 2.5 mm × 0.55 mm Thin QFN (TQFN-14, FT package code), exposed pad (EP) required for thermal and ground connection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (PGND1) | Boost Power Ground | Return path for boost converter high-side/low-side switches; must be isolated from AGND and PGND2 to prevent noise coupling. |
| 2 (VIN) | Battery Input | Primary supply input; start-up triggered at 0.75 V, regulated down to 0.85 V minimum operating threshold. |
| 3 (FB1) | Boost Feedback Input | Connects to resistor divider setting VOUT1; senses 0.6 V reference with ±2.5% tolerance across –40°C to +125°C. |
| 4 (NC) | No Connect | Unbonded pin; must remain floating-no PCB trace or solder mask opening required. |
| 5 (PG) | Power Good Output | Open-drain active-high signal asserting when both outputs are within 90% of target; deglitched (60–120 ms) for fault immunity. |
| 6 (EN) | Enable Input | CMOS-compatible control; 4 MΩ internal pull-down ensures default OFF; rising-edge threshold 0.58 V (typical) at 25°C. |
| 7 (LED) | Low-Battery Indicator | Open-drain output driving external LED; blinks at 0.25 Hz / 25% duty cycle when VIN = 1.15–1.25 V; off below 0.85 V. |
| 8 (AGND) | Analog Ground | Reference for FB1/FB2 comparators and error amplifiers; requires star-point connection to minimize offset drift. |
| 9 (FB2) | Buck Feedback Input | Sets VOUT2 via resistor divider; shares same 0.6 V reference as FB1 but with independent regulation loop. |
| 10 (OUT2) | Buck Output Node | Supplies load directly; actively discharged to GND via 500–700 Ω internal resistor when EN = low or PG = low. |
| 11 (PGND2) | Buck Power Ground | Return path for buck converter; separate from PGND1 to avoid cross-regulator ground bounce. |
| 12 (SW2) | Buck Switch Node | Connects to inductor; high-speed switching node requiring short/wide routing; anti-ringing switch engages at zero-current crossing. |
| 13 (OUT1) | Boost Output Node | Primary regulated output powering VOUT2 and system logic; actively discharged (500–700 Ω) during shutdown. |
| 14 (SW1) | Boost Switch Node | Connects to input inductor; operates up to 1 MHz; anti-ringing switch minimizes EMI during discontinuous conduction mode. |
| EP | Exposed Pad | Must be soldered to solid GND plane for thermal dissipation (θJC = 25°C/W) and low-impedance return path. |
Key Features
| Feature | Design Value |
|---|---|
| Dual cascaded regulation | VOUT2 powered from VOUT1-not VIN-enabling stable 1.0 V core supply even as battery decays from 1.5 V to 0.85 V. |
| Audio-band noise suppression | Minimum 80 kHz (buck) / 100 kHz (boost) switching frequencies avoid audible artifacts; anti-ringing circuit reduces EMI peaks. |
| Active output discharge | Internal 500–700 Ω resistors on OUT1/OUT2 ensure rapid, controlled capacitor discharge during shutdown-critical for safe hot-swap. |
| Integrated battery monitoring | Programmable LED blink (0.25 Hz, 25% duty) between 1.15–1.25 V; automatic cutoff at 0.85 V after 15 cool-off cycles. |
| Robust fault protection | Thermal shutdown (150°C), short-circuit hiccup (15 cycles), VIN/VOUT fault detection with deglitch delays (60–180 ms), and PG assertion. |
Applications
| Wireless Audio Headsets | Portable Medical Sensors |
|---|---|
Use Scenario: Compact Bluetooth headset with MEMS microphone, DSP, and Class-D amplifier running from single AAA cell. IC Role / Device Role / Timing Role: MIC23099YFT-T5 generates clean 3.3 V for radio/DSP and 1.2 V for analog front-end while suppressing switching noise in 20–20 kHz audio band. Use Value: Eliminates need for separate LDOs and discrete battery monitor; 92% efficiency at 100 mA extends talk time by >35% vs. linear solutions. |
Use Scenario: Disposable glucose monitor with ultra-low-power MCU, electrochemical sensor, and BLE transmitter. IC Role / Device Role / Timing Role: MIC23099YFT-T5 delivers regulated 1.8 V (VOUT1) for MCU and 1.0 V (VOUT2) for sensor bias, with precise low-battery warning. Use Value: Active discharge ensures safe sensor electrode reset; 200 µA quiescent current enables >6-month shelf life with coin-cell equivalent energy. |
| Industrial Handheld Scanners | Smart Wearable Trackers |
Use Scenario: Rugged barcode scanner using laser diode, CMOS imager, and ARM Cortex-M0+ MCU powered by AA cell. IC Role / Device Role / Timing Role: MIC23099YFT-T5 supplies 3.3 V (VOUT1) to imager and 1.2 V (VOUT2) to MCU core, with PG signal enabling firmware-controlled power sequencing. Use Value: Cascaded architecture avoids brown-out during laser pulse; thermal shutdown protects against overheating in sealed enclosures. |
Use Scenario: Fitness tracker with accelerometer, optical heart-rate sensor, and BLE SoC operating from button cell. IC Role / Device Role / Timing Role: MIC23099YFT-T5 provides 2.8 V (VOUT1) for BLE radio and 1.1 V (VOUT2) for sensor interface, with LED blink indicating battery level. Use Value: 10 mV ripple ensures clean analog sensor readings; -40°C to +125°C rating supports outdoor use in extreme climates. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65270PWP | Wider VIN (2.7–5.5 V); fixed 3.3 V/1.2 V outputs; no battery monitoring or LED driver; larger HTSSOP-28 package. | Requires external battery gauge; suited for USB-powered or multi-cell systems-not single-cell alkaline/NiMH. | Select when higher input voltage and fixed outputs are acceptable; avoid for battery-life-critical portable designs. |
| MAX17047G+T | Fuel-gauge IC only-no DC/DC conversion; measures SOC via coulomb counting; 12-pin TDFN package. | Cannot replace MIC23099YFT-T5's power conversion function; used alongside standalone regulators for battery telemetry. | Choose only as supplemental fuel gauge; not a functional alternative for voltage regulation or power management. |
Compared with TPS65270PWP and MAX17047G+T, the MIC23099YFT-T5 uniquely integrates single-cell start-up, dual adjustable outputs, battery monitoring, and ultra-low quiescent current in a 2.5 mm × 2.5 mm footprint-making it irreplaceable for space-constrained, battery-optimized portable electronics.
Availability
MIC23099YFT-T5 is available at Aetrix Electronics and suitable for wireless audio headsets, portable medical sensors, and industrial handheld scanners requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC23099YFT-T5 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 global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with emphasis on reliability, longevity, and industrial-grade qualification.
The MIC23099YFT-T5 belongs to Microchip's low-power PMIC product line, engineered specifically for single-cell battery-powered portable electronics where efficiency, small size, and integrated battery health monitoring are critical design requirements.
FAQ
What is the minimum input voltage required for MIC23099YFT-T5 to start up?
The MIC23099YFT-T5 has a minimum start-up voltage of 0.75 V (typical), with guaranteed operation above 0.9 V. This allows reliable turn-on from deeply discharged alkaline or NiMH cells. Once started, it continues regulating down to 0.85 V before triggering low-battery indication and eventual shutdown after cool-off cycles.
How does the MIC23099YFT-T5 manage output sequencing between VOUT1 and VOUT2?
The MIC23099YFT-T5 enforces strict power-up sequencing: VOUT1 (boost) powers up first and stabilizes before enabling VOUT2 (buck). This ensures the buck regulator always receives a valid input voltage, preventing instability or undervoltage lockout. Sequencing is hardware-controlled and cannot be inverted or bypassed.
Can MIC23099YFT-T5 generate VOUT2 higher than VOUT1?
No. The MIC23099YFT-T5 specifies VOUT2 range as "1.0 V to VOUT1", meaning VOUT2 cannot exceed the configured VOUT1 value. Since VOUT2 is supplied by VOUT1, its maximum possible output equals VOUT1 minus internal drop-typically limited to ≤VOUT1 by design.
What is the purpose of the NC pin (Pin 4) on MIC23099YFT-T5?
Pin 4 is a true no-connect (NC) pin-unbonded internally and electrically isolated. It must remain unconnected on the PCB: no trace, no solder mask opening, and no grounding. Routing near this pin carries no risk, as it has no internal connection to any circuit node.
Does MIC23099YFT-T5 support external synchronization of its switching frequency?
No. The MIC23099YFT-T5 uses internally generated clocking with fixed PWM frequency (1.0 MHz typical for boost, 80–100 kHz for buck in PFM mode). There is no SYNC pin or external clock input; frequency is determined solely by internal oscillator and load conditions.
MIC23099YFT-T5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 14-UFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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-T5 FAQ
1.How can I place an order for MIC23099YFT-T5 through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23099YFT-T5 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-T5 reliable?
The price and inventory of MIC23099YFT-T5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23099YFT-T5 is usually 5 days.
3.What payment methods are accepted for MIC23099YFT-T5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23099YFT-T5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23099YFT-T5?
MIC23099YFT-T5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23099YFT-T5 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-T5?
For technical support, including MIC23099YFT-T5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23099YFT-T5 requirements.
6.How does Aetrix verify that MIC23099YFT-T5 is sourced from the original manufacturer or authorized distributors?
All MIC23099YFT-T5 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-T5 meets industry standards.
7.What is the process for return or replacement of MIC23099YFT-T5?
All MIC23099YFT-T5 units undergo pre-shipment inspection (PSI). If there is an issue with MIC23099YFT-T5, 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-T5 part is unused and in its original packaging.
Return procedure for MIC23099YFT-T5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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