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Microchip Technology MIC5370-SMYMT-TR
- Part No.:
- MIC5370-SMYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC5370-SMYMT-TR.pdf
- Description:
- IC REG LINEAR 2.8V/3.3V 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,077
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Product details
Overview
MIC5370-SMYMT-TR from Micrel is a dual-channel, high-accuracy low-dropout linear regulator delivering independent 150mA outputs at 3.3V and 2.8V in a 1.6mm × 1.6mm Thin MLF® package. It features ±2% initial output accuracy, 155mV dropout at full load, 32µA typical ground current per LDO, and operates from 2.5V to 5.5V input - optimized for camera DSP power supply circuits in compact portable electronics.
For engineers reviewing the MIC5370-SMYMT-TR datasheet, MIC5370-SMYMT-TR pinout, MIC5370-SMYMT-TR application, or MIC5370-SMYMT-TR equivalent, key selection criteria include dual-output voltage pairing, ultra-low quiescent current in active and shutdown states, stability with 1µF ceramic capacitors, and thermal performance in space-constrained battery-powered designs.
Technical Context
The MIC5370-SMYMT-TR integrates two fully independent CMOS-based LDO regulators sharing only VIN and GND. Each channel has its own active-high enable pin (EN1/EN2), enabling selective power gating without cross-regulator interference. The architecture supports zero-off-mode operation with <1µA total shutdown current.
It employs internal bandgap reference and error amplifiers to achieve tight line/load regulation (0.3%/V and 1% respectively) and delivers 60dB PSRR at 1kHz. Unlike the MIC5371 variant, it lacks auto-discharge circuitry - output capacitors remain charged when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltages | 3.3V (VOUT1) and 2.8V (VOUT2) - fixed, non-adjustable, matched for core/peripheral rail sequencing in mobile SoC subsystems |
| Max output current | 150mA per channel - sufficient to power image signal processors and baseband ICs without external boost stages |
| Dropout voltage | 155mV at 150mA - enables >95% efficiency at 3.6V input → 3.3V/2.8V outputs, critical for Li-ion battery discharge curves |
| Ground current | 32µA per LDO (typical) - minimizes standby power loss in always-on camera modules and sleep-state peripherals |
| Accuracy | ±2% initial tolerance - ensures reliable logic-level compliance for 3.3V I/O and 2.8V analog front-end circuits |
| Input range | 2.5V to 5.5V - compatible with single-cell Li-ion (2.7–4.2V), USB 5V, and boosted 3.3V rails |
| Capacitor support | Stable with ≥1µF X5R/X7R ceramic output caps - eliminates need for bulky tantalum or electrolytic capacitors |
Pinout & Package
Package: 6-pin 1.6mm × 1.6mm Thin MLF® (Pb-free, RoHS-compliant, exposed thermal pad connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Supply input | Common input for both LDOs; must be decoupled with ≥1µF ceramic capacitor to GND |
| 2 - GND | Ground reference | Power and signal return; electrically tied to exposed heatsink pad for thermal conduction |
| 3 - EN2 | Enable input (LDO2) | Active-high logic control; drives VOUT2; floating state prohibited - requires pull-down or MCU GPIO |
| 4 - EN1 | Enable input (LDO1) | Active-high logic control; drives VOUT1; independent of EN2 for staggered power-up or fault isolation |
| 5 - VOUT2 | LDO2 regulated output | Delivers fixed 2.8V at up to 150mA; connects directly to camera sensor analog supply or RF bias rails |
| 6 - VOUT1 | LDO1 regulated output | Delivers fixed 3.3V at up to 150mA; typically powers digital interfaces (MIPI, I²C) or DSP core logic |
Key Features
| Feature | Design Value |
|---|---|
| Independent enable control | EN1 and EN2 allow separate power sequencing - e.g., bring up 3.3V logic before 2.8V analog to prevent latch-up |
| Low-noise regulation | 200µVRMS output noise (10Hz–100kHz) - preserves SNR in camera image signal chains and ADC reference paths |
| Thermal & current protection | Integrated thermal shutdown and 200–550mA current limiting per LDO - prevents damage during short-circuit or overload |
| No-load stability | Remains in regulation with zero output current - essential for maintaining backup RAM voltage or real-time clock supplies |
| Fast transient response | 50–125µs turn-on time with 1µF output cap - supports rapid wake-from-sleep transitions in mobile applications |
Applications
| Camera DSP Power Supply | Mobile Baseband Core/IO Rails |
|---|---|
Use Scenario: Dual-rail power delivery to image signal processor (ISP) and companion camera sensor in smartphone front/rear modules. IC Role / Device Role / Timing Role: Provides isolated, low-noise 3.3V (digital interface) and 2.8V (analog sensor bias) from shared battery input. Use Value: Eliminates need for discrete regulators or DC-DC + LDO combos - reduces BOM count and PCB area by >40% versus SOT-23 solutions. |
Use Scenario: Powering application processor I/O banks and memory interfaces requiring tightly regulated, low-ripple supplies. IC Role / Device Role / Timing Role: Delivers sequenced 3.3V and 2.8V rails with independent enable control to meet SoC power-up timing requirements. Use Value: Enables precise power sequencing via MCU-controlled EN1/EN2 - avoids bus contention and initialization faults during boot. |
| GPS/PMP Audio Codec Bias | Handheld PDA System Management |
Use Scenario: Supplying clean analog bias (2.8V) and digital core (3.3V) to GPS receiver RF front-end and audio codec in portable navigation devices. IC Role / Device Role / Timing Role: Acts as post-regulator for switched-mode supply - suppresses switching noise above 60dB at 1kHz. Use Value: Maintains GPS signal acquisition sensitivity and audio SNR without adding ferrite beads or LC filters. |
Use Scenario: Consolidating power for legacy PDA subsystems including touch controller (3.3V), SRAM keep-alive (2.8V), and backlight driver logic. IC Role / Device Role / Timing Role: Functions as primary dual-rail LDO with zero-load stability - sustains RTC and memory during deep sleep modes. Use Value: Reduces system standby current to <1µA total - extends battery life beyond 72 hours in always-on monitoring mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5371-SMYMT-TR | Same pinout and output voltages, but adds 30Ω auto-discharge NFET on each output when disabled | Required where rapid output capacitor discharge is needed (e.g., to meet USB suspend voltage decay specs) | Select MIC5371-SMYMT-TR only if output discharge is mandatory; otherwise MIC5370-SMYMT-TR offers lower cost and identical regulation performance |
| TPL720F3330PDBVR | Single-channel 300mA LDO (3.3V), no 2.8V output; 25µA IQ; 120mV dropout at 300mA | Requires two separate devices to replicate dual-rail functionality - increases layout area and component count | Use only when higher current (>150mA) or lower dropout is required per rail; not a drop-in replacement |
Compared with MIC5371-SMYMT-TR, the MIC5370-SMYMT-TR omits auto-discharge but matches all regulation specs and enables simpler power sequencing; versus TPL720F3330PDBVR, it provides true dual-rail integration in half the footprint and eliminates inter-device timing skew.
Availability
MIC5370-SMYMT-TR is available at Aetrix Electronics and suitable for camera modules, handheld GPS receivers, and portable multimedia players requiring stable component supply across industrial temperature ranges (–40°C to +125°C).
Supply support for MIC5370-SMYMT-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 specializing in power management, timing, and interface ICs before its acquisition by Microchip Technology in 2015.
The MIC5370 family was designed specifically for space-constrained, battery-powered portable electronics requiring dual, independently controlled, ultra-low-quiescent-current LDOs in sub-2mm² packages.
FAQ
What output voltages does the MIC5370-SMYMT-TR provide?
The MIC5370-SMYMT-TR provides fixed 3.3V on VOUT1 and 2.8V on VOUT2. These values are laser-trimmed during manufacturing and cannot be adjusted externally. Both outputs maintain ±2% initial accuracy over temperature and load, making MIC5370-SMYMT-TR suitable for powering mixed-voltage SoC subsystems without external feedback networks.
Does the MIC5370-SMYMT-TR include auto-discharge functionality?
No, the MIC5370-SMYMT-TR does not include auto-discharge circuitry. That feature is exclusive to the MIC5371 variant (e.g., MIC5371-SMYMT-TR). When EN1 or EN2 is driven low, MIC5370-SMYMT-TR enters zero-off-mode (<1µA total current) but leaves its respective output capacitor charged - critical for applications requiring fast wake-up or voltage hold during brief disable periods.
What is the minimum input voltage required for stable operation of the MIC5370-SMYMT-TR?
The MIC5370-SMYMT-TR requires a minimum input voltage of 2.5V to maintain regulation on both outputs. At 150mA load, the dropout voltage is 155mV - meaning VOUT1 remains stable down to VIN = 3.455V (3.3V + 0.155V) and VOUT2 down to VIN = 2.955V (2.8V + 0.155V). Below 2.5V, the device may cease regulation or enter undervoltage lockout.
Can the MIC5370-SMYMT-TR operate without output capacitors?
No - the MIC5370-SMYMT-TR requires ≥1µF ceramic output capacitors on both VOUT1 and VOUT2 for stability. The design is optimized for X5R/X7R dielectrics; omitting these capacitors risks oscillation or poor transient response. Unlike some older LDOs, MIC5370-SMYMT-TR is not stable under no-capacitor or ultra-low-ESR conditions.
Is the MIC5370-SMYMT-TR RoHS-compliant and lead-free?
Yes, the MIC5370-SMYMT-TR uses a Pb-free (RoHS-compliant) 6-pin Thin MLF® package with NiPdAu lead finish and halogen-free mold compound. The exposed thermal pad is internally connected to GND, and the device meets JEDEC J-STD-020 moisture sensitivity level 1 - suitable for standard reflow assembly without special baking protocols.
MIC5370-SMYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.8V, 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.31V @ 150mA, 0.31V @ 150mA
- Current - Output:
- 150mA, 150mA
- Current - Quiescent (Iq):
- 45 µA
- Current - Supply (Max):
- 85 µA
- PSRR:
- 60dB (1kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TMLF® (1.6x1.6)
MIC5370-SMYMT-TR FAQ
1.How can I place an order for MIC5370-SMYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5370-SMYMT-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 MIC5370-SMYMT-TR reliable?
The price and inventory of MIC5370-SMYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5370-SMYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC5370-SMYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5370-SMYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5370-SMYMT-TR?
MIC5370-SMYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5370-SMYMT-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 MIC5370-SMYMT-TR?
For technical support, including MIC5370-SMYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5370-SMYMT-TR requirements.
6.How does Aetrix verify that MIC5370-SMYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5370-SMYMT-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 MIC5370-SMYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC5370-SMYMT-TR?
All MIC5370-SMYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5370-SMYMT-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 MIC5370-SMYMT-TR part is unused and in its original packaging.
Return procedure for MIC5370-SMYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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