My Inquiry
My Account
Microchip Technology MIC5247-2.4YM5-TR
- Part No.:
- MIC5247-2.4YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5247-2.4YM5-TR.pdf
- Description:
- IC REG LINEAR 2.4V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,800
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC5247-2.4YM5-TR from Micrel is a 2.4V fixed-output, 150mA ultra-low-noise CMOS linear voltage regulator in SOT-23-5 package, featuring 1% initial output accuracy, 85µA load-independent ground current, 30µVRMS output noise (10Hz–100kHz), and logic-compatible enable pin for zero-off-mode operation. It is optimized for RF power rails in battery-powered handheld devices.
For engineers reviewing the MIC5247-2.4YM5-TR datasheet, MIC5247-2.4YM5-TR pinout, MIC5247-2.4YM5-TR application, or MIC5247-2.4YM5-TR equivalent, key selection criteria include dropout voltage at 150mA (150mV), PSRR of 50dB at ≤1kHz, thermal shutdown at 150°C, stability with 1µF ceramic output capacitors, and noise bypass capability via dedicated BYP pin.
Technical Context
The MIC5247-2.4YM5-TR uses a P-channel MOSFET pass device with N-channel active clamp for fast transient recovery and overshoot suppression during load step-down. Its reference bypass architecture enables configurable noise reduction via external 0.01µF capacitor on the BYP pin.
It integrates under-voltage lockout, thermal shutdown with 10°C hysteresis, and current limiting (160–300mA). The enable input is CMOS-compatible (VIH ≥ 1.6V, VIL ≤ 0.4V), requiring termination to avoid indeterminate state - no pull-up/pull-down is internal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.4V ±1% (initial accuracy at 25°C); ensures stable biasing for 2.4V-core RF ICs without external feedback. |
| Max Output Current | 150mA continuous; supports moderate-power RF front-end stages and low-voltage microcontrollers. |
| Dropout Voltage | 150mV at 150mA load; enables operation from 2.7V input down to 2.55V output, critical for single-cell Li-ion systems. |
| Ground Current | 85µA typical, load-independent; maintains ultra-low quiescent power across full load range, extending battery life. |
| Output Noise | 30µVRMS (10Hz–100kHz, CBYP=0.01µF); meets stringent RF supply noise requirements for LNA/VCO circuits. |
| PSRR | 50dB at ≤1kHz; suppresses switching noise from upstream DC/DC converters in hybrid power architectures. |
| Enable Threshold | VIH = 1.6V min, VIL = 0.4V max; compatible with 1.8V/2.5V/3.3V GPIOs without level-shifting. |
Pinout & Package
SOT-23-5 (M5) package: 2.9mm × 1.6mm × 1.1mm body, gull-wing leads, exposed pad not present (unlike MLF variant). RoHS-compliant, Pb-free marking "LU24".
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply rail | Accepts 2.7V–6V input; requires no mandatory input capacitor but benefits from 1µF if >10" from bulk source. |
| 2 (GND) | Power ground reference | Common return for IN, OUT, EN, and BYP; must be low-impedance connection to minimize noise coupling. |
| 3 (EN) | CMOS enable input | Active-high control: high ≥1.6V enables regulation; low ≤0.4V forces near-zero IQ shutdown; must not float. |
| 4 (BYP) | Noise reference bypass | Connects to internal bandgap reference; 0.01µF to GND reduces output noise and improves PSRR at high frequencies. |
| 5 (OUT) | Regulated output | Delivers 2.4V ±1% to load; requires ≥1µF ceramic capacitor (low-ESR) for stability and transient response. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low ground current | 85µA constant over 0–150mA load - eliminates battery drain penalty during light-load sleep modes. |
| Active output clamp | N-channel MOSFET rapidly discharges output capacitance during shutdown, preventing residual voltage holdup on sensitive loads. |
| Push-pull output stage | P-channel pass + N-channel clamp topology achieves <10µs recovery from 100mA→100µA load transients - avoids undershoot/overshoot. |
| Low-ESR capacitor support | Stable with 1µF+ ceramic capacitors only - eliminates need for bulky, temperature-sensitive tantalum or electrolytic types. |
| Thermal protection | 150°C shutdown with 10°C hysteresis - prevents damage during sustained overload or poor PCB thermal design. |
Applications
| Cellular Front-End Power | Portable Audio Codec Bias |
|---|---|
|
Use Scenario: Powering LNA, mixer, and VCO blocks in GSM/UMTS/WCDMA handset RF transceivers. IC Role / Device Role / Timing Role: Ultra-low-noise 2.4V supply rail decoupling critical analog RF circuitry from noisy digital domains. Use Value: 30µVRMS noise floor and 50dB PSRR prevent reciprocal mixing and phase noise degradation in receiver chains. |
Use Scenario: Providing clean bias voltage to stereo audio codecs in Bluetooth headsets and portable media players. IC Role / Device Role / Timing Role: Low-noise, low-quiescent linear regulator replacing inefficient LDOs with higher ground current in audio signal paths. Use Value: 85µA ground current extends playback time; 1% output accuracy ensures consistent ADC/DAC reference tracking. |
| PCMCIA Card VCC Regulation | SMPS Post-Regulator |
|
Use Scenario: Regulating 2.4V VCC for Type II PCMCIA cards in industrial handheld terminals and legacy data acquisition modules. IC Role / Device Role / Timing Role: Fixed-output linear regulator with enable control for hot-swap power sequencing and card presence detection. Use Value: Logic-compatible EN pin allows direct GPIO control; 150mV dropout enables use with 2.7V minimum SMPS rail. |
Use Scenario: Tightening output voltage tolerance and reducing ripple/noise after buck converter in multi-rail embedded systems. IC Role / Device Role / Timing Role: Precision post-regulator improving DC accuracy and high-frequency noise rejection for FPGA I/O banks or sensor interfaces. Use Value: 1% initial accuracy and 30µVRMS noise meet FPGA core voltage tolerance specs while eliminating need for additional filtering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise, enable-controlled LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2402E/TT | 2.4V, 250mA, 2µA IQ, no BYP pin, 115mV dropout @ 250mA | Lacks noise-bypass capability; lower IQ suits ultra-low-power sleep modes but higher noise limits RF use. | Select when lowest possible quiescent current dominates over RF noise performance. |
| Torex XC6206P242MR-G | 2.4V, 150mA, 1% accuracy, no EN pin, 160mV dropout @ 150mA, no BYP | Fixed-on operation only; no enable control or noise bypass - simpler but less flexible for dynamic power management. | Select for cost-sensitive, always-on applications where enable and ultra-low noise are unnecessary. |
Compared with MIC5247-2.4YM5-TR, MCP1700T-2402E/TT offers lower IQ but forfeits noise-bypass capability and RF-grade PSRR, while XC6206P242MR-G eliminates enable control and noise optimization entirely - making MIC5247-2.4YM5-TR uniquely suited for battery-powered RF systems requiring both precision enable sequencing and sub-35µV noise.
Availability
MIC5247-2.4YM5-TR is available at Aetrix Electronics and suitable for cellular front-end power, portable audio codec bias, PCMCIA card regulation, SMPS post-regulation, and ultra-low-noise analog supply applications requiring stable component supply across extended temperature ranges.
Supply support for MIC5247-2.4YM5-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 analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5247 series was designed specifically for ultra-low-noise, battery-efficient linear regulation in handheld wireless devices - emphasizing precision, minimal ground current, and RF-friendly noise performance.
FAQ
What is the maximum input voltage for MIC5247-2.4YM5-TR at 150mA output in a standard SOT-23-5 layout?
The maximum input voltage for MIC5247-2.4YM5-TR at 150mA output and 25°C ambient, using the minimum footprint layout (θJA = 235°C/W), is 5.2V. This is derived from thermal limits: PD(max) = (125°C − 25°C)/235°C/W = 425mW; then solving 425mW = (VIN − 2.4V) × 0.15A yields VIN(max) = 5.2V. Exceeding this risks thermal shutdown.
Does MIC5247-2.4YM5-TR require an input capacitor, and if so, what value is recommended?
MIC5247-2.4YM5-TR does not require an input capacitor for stability. However, a 1µF ceramic capacitor is recommended when the bulk AC supply capacitance is located more than 10 inches from the device or when powered directly from a battery. This mitigates line impedance effects and improves transient response to input voltage steps.
Can the BYP pin of MIC5247-2.4YM5-TR be left unconnected, and what is the impact on output noise?
Yes, the BYP pin of MIC5247-2.4YM5-TR may be left open with no functional risk. However, doing so results in higher output noise: 30µVRMS (with 0.01µF BYP capacitor) increases to approximately 60–70µVRMS (typical, per datasheet noise curves). For RF-sensitive applications, connecting 0.01µF to GND is strongly advised.
What is the shutdown current of MIC5247-2.4YM5-TR, and how is it achieved?
The shutdown current of MIC5247-2.4YM5-TR is 0.2–1µA (typical 0.2µA) when EN is held ≤0.4V. This "zero" off-mode current is achieved by fully disabling the internal reference, error amplifier, and pass transistor gate drive - not merely high-impedance tri-state. The active N-channel clamp also discharges the output capacitor, ensuring rapid load de-energization.
Is MIC5247-2.4YM5-TR stable with a 1µF ceramic output capacitor, and why is ESR not a concern?
Yes, MIC5247-2.4YM5-TR is explicitly designed and characterized for stability with ≥1µF ceramic output capacitors, including low-ESR types. Unlike older LDOs, its internal compensation is optimized for ceramic capacitors' near-zero ESR, eliminating the need for minimum ESR requirements or damping resistors - simplifying layout and reducing BOM count.
MIC5247-2.4YM5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.4V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.15V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 50dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5247-2.4YM5-TR FAQ
1.How can I place an order for MIC5247-2.4YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5247-2.4YM5-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 MIC5247-2.4YM5-TR reliable?
The price and inventory of MIC5247-2.4YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5247-2.4YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5247-2.4YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5247-2.4YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5247-2.4YM5-TR?
MIC5247-2.4YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5247-2.4YM5-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 MIC5247-2.4YM5-TR?
For technical support, including MIC5247-2.4YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5247-2.4YM5-TR requirements.
6.How does Aetrix verify that MIC5247-2.4YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5247-2.4YM5-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 MIC5247-2.4YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5247-2.4YM5-TR?
All MIC5247-2.4YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5247-2.4YM5-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 MIC5247-2.4YM5-TR part is unused and in its original packaging.
Return procedure for MIC5247-2.4YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC5247-2.4YM5-TR Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
