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Microchip Technology MIC5317-3.3YMT-TZ
- Part No.:
- MIC5317-3.3YMT-TZ
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad
- Description:
- IC REG LINEAR 3.3V 150MA 4DFN
- Quantity:
Unit Price:$0
Ext Price:$0
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Product Details
MIC5317-3.3YMT-TZ - 3.3 V, 150 mA Low-Noise LDO
Microchip Technology MIC5317-3.3YMT-TZ is a fixed 3.3 V, 150 mA low-dropout linear regulator with active-high enable in a 4-lead 1 mm by 1 mm UDFN package.
Electrical values, pin functions, package dimensions, marking, and order-code details were checked against Microchip data sheet DS20006195B for the exact 3.3 V YMT-TZ configuration.
Overview
The MIC5317-3.3YMT-TZ regulates a fixed 3.3 V output and supports loads up to 150 mA. The family operates from 2.5 V to 6.0 V, while this output option requires adequate input-to-output headroom. Low ground current, high power-supply rejection, ceramic-capacitor stability, active-high enable, current limiting, and thermal shutdown support compact portable and mixed-signal rails.
Key Advantages
Ultra-small footprint
The 1 mm by 1 mm UDFN body occupies only 1 square millimeter of board area.
Low supply overhead
Typical ground current is 29 microamperes, helping reduce standby consumption.
Noise isolation
High typical PSRR helps attenuate input-rail disturbances when layout and capacitor guidance are followed.
Integrated protection
Current limiting and thermal shutdown protect the regulator under overload and excessive-temperature conditions.
Feature Summary
Fixed 3.3 V output
The factory-set output needs no external feedback divider.
Active-high enable
A logic high enables regulation and a logic low enters shutdown; EN must not float.
Low-power shutdown
Typical shutdown ground current is 0.05 microampere under the data-sheet condition.
Ceramic stability
The regulator is stable with 1 microfarad ceramic input and output capacitors.
Package & Footprint
The MT suffix identifies Microchip's 4-lead, 1 mm by 1 mm UDFN package with an exposed center pad. The manufacturer drawing calls it HCA UDFN and specifies 0.65 mm contact pitch. The catalog registers this footprint as 4-UDFN Exposed Pad.
- Verify the pin-1 index and bottom-view orientation before layout release.
- Use the current Microchip land pattern for the HCA 1 mm by 1 mm UDFN.
- Connect the exposed pad to ground and follow the recommended solder-mask and thermal-via guidance.
- Place input and output capacitors close to the device with short ground returns.
Pin Functions
The following assignment is for the 4-lead MT UDFN top view.
The five-lead SOT-23 variants use a different pin order and are not footprint-equivalent.
Key Specifications
| Manufacturer | Microchip Technology |
|---|---|
| Regulator type | Fixed-output low-dropout linear regulator |
| Output voltage | 3.3 V nominal |
| Input operating range | 2.5 V to 6.0 V |
| Output current | 150 mA |
| Initial output accuracy | +/-2% at the stated data-sheet condition |
| Dropout voltage | 155 mV typical, 310 mV maximum at 150 mA for VOUT at or above 2.8 V |
| Ground current | 29 microamperes typical, 39 microamperes maximum at no load |
| PSRR | 80 dB typical up to 1 kHz; 65 dB typical from 1 kHz to 10 kHz |
| Output noise | 200 microvolts RMS typical from 10 Hz to 100 kHz |
| Current limit | 200 mA minimum, 325 mA typical, 550 mA maximum with VOUT at 0 V |
| Operating junction temperature | -40 degrees C to +125 degrees C |
| Package and media | 4-lead 1 mm by 1 mm UDFN (MT), 10,000-piece TZ reel option |
Typical and limit values depend on the stated electrical test conditions. Confirm voltage headroom and package thermal performance at the intended load.
Replacement Considerations
A candidate replacement must preserve the fixed 3.3 V output, 150 mA load requirement, 1 mm by 1 mm HCA UDFN land pattern, VOUT/GND/EN/VIN pin order, ground-connected exposed pad, enable thresholds, capacitor stability, dropout performance, and thermal limits. MIC5317 SOT-23 variants are electrically related but not footprint-compatible.
No internal replacement link is asserted without an exact catalog match and engineering review.
Manufacturer Information
Microchip identifies MIC5317 as a high-performance single 150 mA LDO. In the exact order code, 3.3 specifies the output voltage, Y specifies the -40 degrees C to +125 degrees C junction-temperature range, MT specifies the 4-lead 1 mm by 1 mm UDFN, and TZ specifies the 10,000-piece reel option. The 3.3 V YMT marking code is 79.
Applications
USB peripherals
The compact LDO can generate a local 3.3 V rail from a suitable USB-derived input.
Portable electronics
Low ground current and shutdown control suit battery-powered subsystems.
Camera subsystems
High supply rejection supports noise-sensitive imaging and peripheral rails.
Space-constrained logic rails
The 1 mm by 1 mm package supports compact 3.3 V sensor and interface domains.
Quality & Authenticity
Confirm the full MIC5317-3.3YMT-TZ ordering label, reel quantity, marking code 79, pin-1 index, UDFN dimensions, and traceability information during incoming inspection. Package appearance alone does not establish identity or authenticity. Electrical verification should use the latest Microchip data sheet.
FAQ
What output voltage does MIC5317-3.3YMT-TZ provide?
It is the fixed 3.3 V, 150 mA member of the MIC5317 family.
Can EN be left floating?
No. Microchip specifies that the active-high enable input must not be left floating.
What does TZ mean?
TZ is the 10,000-piece tape-and-reel media option available for the MT package.
Which capacitors are required?
The typical application uses 1 microfarad ceramic capacitors at both input and output.
Is a package image currently available?
No verified production JPG is available for the registered 4-UDFN Exposed Pad path; use the Microchip package drawing for mechanical design.
Engineering Notice
Validate dropout headroom, load transients, capacitor bias derating, enable thresholds, solder-pad geometry, exposed-pad grounding, and junction temperature in the final circuit. The minimum-footprint junction-to-ambient thermal resistance is listed as 240 degrees C/W for YMT, so allowable dissipation must be checked carefully.
MIC5317-3.3YMT-TZ Information
- Specifications
- Tags
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad
- 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):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.31V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 39 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB ~ 65dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-DFN (1x1)
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