My Inquiry
My Account
Microchip Technology MIC5512-3.3YMT-TR
- Part No.:
- MIC5512-3.3YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad
- Datasheet:
-
MIC5512-3.3YMT-TR.pdf
- Description:
- IC REG LINEAR 3.3V 300MA 6TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,879
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC5512-3.3YMT from Micrel is a fixed-output 3.3V, 300mA low-dropout linear regulator in a 6-pin 1.6mm × 1.6mm Thin DFN package, featuring ±1% initial output accuracy, 160mV dropout at full load, and auto-discharge functionality activated on disable. It operates from 2.5V to 5.5V input and supports battery-powered portable electronics requiring stable low-noise voltage regulation with minimal board space.
For engineers reviewing the MIC5512-3.3YMT datasheet, MIC5512-3.3YMT pinout, MIC5512-3.3YMT application, or MIC5512-3.3YMT equivalent, key selection criteria include guaranteed 300mA output current, ultra-low 38µA ground current at light load, zero-off-mode shutdown current (<1µA), stability with 1µF ceramic output capacitors, and thermal performance up to +125°C junction temperature.
Technical Context
The MIC5512-3.3YMT implements a CMOS-based LDO architecture with internal PMOS pass transistor, enabling low dropout and high PSRR (65dB at 1kHz). Its enable pin is active-high with no internal pull-down - requiring external logic control to avoid floating states.
It integrates an auto-discharge NFET (25Ω) tied to VOUT, activated when EN is low, ensuring rapid capacitor discharge during shutdown. Thermal shutdown and current limiting protect against fault conditions without external components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±1% initial accuracy ensures precise rail generation for 3.3V logic and I/O interfaces without trimming. |
| Max Output Current | 300mA guaranteed continuous output supports microcontrollers, sensors, and RF modules in compact portable systems. |
| Dropout Voltage | 160mV at 300mA enables operation down to VIN = 3.46V, critical for single-cell Li-ion or Li-poly battery systems. |
| Ground Current | 38µA typical at light load and <1µA in shutdown minimizes quiescent power loss in always-on subsystems. |
| Input Voltage Range | 2.5V to 5.5V supports wide-input applications including USB-powered, dual-supply, and multi-battery configurations. |
| Stability | Stable with ≥1µF ceramic output capacitor (X5R/X7R), eliminating need for bulky tantalum or electrolytic types. |
| Operating Temp | –40°C to +125°C junction range qualifies for industrial and extended-temperature embedded designs. |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin DFN (MT) with exposed thermal pad (ePad); RoHS-compliant, halogen-free, NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Active-high enable input | CMOS-compatible logic input; must be driven high (>1.2V) to enable; floating state is undefined - requires external pull-up or driver. |
| 2, 5 - NC | No-connect terminals | Not internally bonded; must remain unconnected per design - no routing or soldering required. |
| 3 - VIN | Regulator input supply | Accepts 2.5V–5.5V; requires 1µF ceramic decoupling capacitor placed adjacent to pin for stability. |
| 4 - VOUT | Regulated output voltage | Delivers fixed 3.3V; includes integrated 25Ω auto-discharge path to GND when EN = low. |
| 6 - GND | Power and signal reference ground | Primary return path; must be connected to system ground plane; ePad must also connect to GND for thermal performance. |
| ePad | Exposed thermal pad | Internally connected to GND; soldering to PCB ground plane reduces θJA by ~30%, essential for 300mA continuous operation. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-discharge circuit | 25Ω internal NFET connects VOUT to GND when disabled, discharging external caps in <1ms - prevents residual voltage hold-up in power sequencing. |
| Ultra-low quiescent current | 38µA typical at 100µA load and <1µA in shutdown - extends battery life in sleep-mode IoT nodes and wearables. |
| Small-footprint packaging | 1.6mm × 1.6mm Thin DFN occupies 2.56mm² board area - ideal for space-constrained mobile and medical devices. |
| High PSRR | 65dB at 1kHz suppresses ripple from noisy DC/DC converters or shared input rails - improves ADC reference and RF circuit performance. |
| No-load stability | Remains in regulation with zero load - eliminates need for dummy loads in CMOS RAM keep-alive or standby circuits. |
Applications
| Smartphone Power Rail | Portable Medical Sensor |
|---|---|
|
Use Scenario: Providing clean 3.3V supply to baseband processor I/O banks and camera interface during active and low-power modes. IC Role / Device Role / Timing Role: Primary LDO for noise-sensitive digital I/O domains, sequenced via EN control from PMIC. Use Value: 160mV dropout enables operation through full Li-ion discharge curve (3.0V–4.2V), while 38µA quiescent current minimizes standby drain. |
Use Scenario: Powering ECG front-end analog signal chain and Bluetooth LE transceiver in handheld diagnostic device. IC Role / Device Role / Timing Role: Low-noise, low-quiescent LDO delivering stable 3.3V to precision ADC and RF section. Use Value: 65dB PSRR attenuates switching noise from adjacent DC/DC converter; auto-discharge clears residual voltage before sensor recalibration. |
| Digital Still Camera (DSC) | Industrial Handheld Terminal |
|
Use Scenario: Supplying image sensor interface and SD card controller in compact DSC with dual-battery backup. IC Role / Device Role / Timing Role: Fixed-output LDO with fast turn-on (125µs) for responsive power-up of imaging subsystems. Use Value: Stable with 1µF X5R ceramic output cap reduces BOM count and PCB area; –40°C to +125°C rating supports outdoor operation. |
Use Scenario: Regulating 3.3V rail for ARM Cortex-M MCU, touchscreen controller, and cellular modem in ruggedized field terminal. IC Role / Device Role / Timing Role: Industrial-grade LDO with thermal shutdown and current limit for reliable operation under variable ambient conditions. Use Value: Exposed ePad connection to ground plane sustains 300mA continuous output at 85°C ambient without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5514-3.3YMT | Includes internal 4MΩ EN pull-down resistor; identical specs otherwise. | Eliminates need for external pull-down in systems where EN may float during processor boot. | Select MIC5514-3.3YMT if EN signal source lacks defined logic state during power-up or reset. |
| Torex XC6219B332MR-G | 300mA, 3.3V fixed, 160mV dropout, but only ±2% accuracy and no auto-discharge. | Lacks VOUT discharge path - requires external circuitry for safe power-down sequencing. | Choose XC6219B332MR-G only if auto-discharge is unnecessary and ±2% tolerance is acceptable for target load. |
Compared with MIC5512-3.3YMT, MIC5514-3.3YMT adds EN pull-down for robustness in undriven states, while XC6219B332MR-G trades away discharge capability and accuracy for lower cost - making MIC5512-3.3YMT optimal where controlled shutdown and precision are mandatory.
Availability
MIC5512-3.3YMT is available at Aetrix Electronics and suitable for smartphone power management, portable medical instrumentation, and industrial handheld terminals requiring stable component supply across long production lifecycles.
Supply support for MIC5512-3.3YMT 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, timing, and analog ICs, acquired by Microchip Technology in 2015. Known for high-performance, small-footprint regulators and clock solutions.
The MIC5512/14 family was designed specifically for space-constrained, battery-operated portable electronics needing high-accuracy, low-IQ LDOs with integrated discharge - targeting smartphones, DSCs, GPS units, and medical wearables.
FAQ
What is the minimum input voltage required for MIC5512-3.3YMT to maintain regulation at 300mA?
The MIC5512-3.3YMT requires VIN ≥ VOUT + dropout voltage. With a typical dropout of 160mV at 300mA, the minimum input is 3.3V + 0.16V = 3.46V. At worst-case (max 380mV dropout), VIN must be ≥ 3.68V to sustain regulation under full load and temperature extremes. MIC5512-3.3YMT cannot regulate from a fully discharged 3.6V Li-ion cell at full current.
Does MIC5512-3.3YMT require an external pull-up or pull-down resistor on the EN pin?
Yes - MIC5512-3.3YMT has no internal EN pull-down. Its EN pin is CMOS-input and must not be left floating; an external pull-up resistor (e.g., 100kΩ to VIN) is required to ensure defined ON state during power-up. MIC5514-3.3YMT includes the 4MΩ internal pull-down, but MIC5512-3.3YMT does not - omitting external bias risks indeterminate output behavior.
Can MIC5512-3.3YMT operate without an output capacitor?
No - MIC5512-3.3YMT requires a minimum 1µF ceramic output capacitor (X5R/X7R) for stability. Operation without COUT causes oscillation and potential damage. Unlike some legacy LDOs, it is not no-capacitor stable; the 1µF value is both minimum and optimization point - larger values do not improve transient response or PSRR significantly.
What is the purpose of the auto-discharge function in MIC5512-3.3YMT, and how does it behave?
The auto-discharge function activates when EN is driven low, connecting VOUT to GND via an internal 25Ω NFET. This rapidly discharges external output capacitance (e.g., 10µF in <250µs), preventing residual voltage from interfering with downstream power sequencing or causing latch-up. MIC5512-3.3YMT performs this discharge automatically - no additional control signals or external components are needed.
Is MIC5512-3.3YMT compatible with standard 0402-size 1µF ceramic capacitors for input and output filtering?
Yes - MIC5512-3.3YMT is explicitly characterized and optimized for use with 1µF, 0402-size X5R/X7R ceramic capacitors on both input and output. The datasheet specifies GRM155R61A105KE15D (Murata) as the recommended part. Y5V dielectrics are discouraged due to severe capacitance loss over temperature, which can compromise stability.
MIC5512-3.3YMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-UFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.38V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 55 µA
- Current - Supply (Max):
- 65 µA
- PSRR:
- 65dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- -
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TDFN (1.6x1.6)
MIC5512-3.3YMT-TR FAQ
1.How can I place an order for MIC5512-3.3YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5512-3.3YMT-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 MIC5512-3.3YMT-TR reliable?
The price and inventory of MIC5512-3.3YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5512-3.3YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5512-3.3YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5512-3.3YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5512-3.3YMT-TR?
MIC5512-3.3YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5512-3.3YMT-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 MIC5512-3.3YMT-TR?
For technical support, including MIC5512-3.3YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5512-3.3YMT-TR requirements.
6.How does Aetrix verify that MIC5512-3.3YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5512-3.3YMT-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 MIC5512-3.3YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5512-3.3YMT-TR?
All MIC5512-3.3YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5512-3.3YMT-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 MIC5512-3.3YMT-TR part is unused and in its original packaging.
Return procedure for MIC5512-3.3YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC5512-3.3YMT-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…
