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Monolithic Power Systems Inc. MP20048DJ-LF-Z
- Part No.:
- MP20048DJ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
MP20048DJ-LF-Z.pdf
- Description:
- IC REG LIN POS ADJ 250MA TSOT23
- Quantity:
- Payment:
- Shipping:
Inventory:2,975
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Product details
Overview
MP20048DJ-LF-Z from Monolithic Power Systems is a capacitor-free, 250mA low-dropout linear regulator using an NMOS pass element in voltage-follower topology, delivering 1.234V–5V output with ±1% initial reference accuracy and 62.5mV dropout at full load. It operates from 1.7V–5.5V input and integrates thermal shutdown and current limiting for protection in space-constrained portable power rails.
For engineers reviewing the MP20048DJ-LF-Z datasheet, MP20048DJ-LF-Z pinout, MP20048DJ-LF-Z application, or MP20048DJ-LF-Z equivalent, key selection criteria include capacitorless stability, ultra-low ground current (350μA at 10mA), 48dB PSRR at 100Hz, and TSOT23-5 footprint compatibility with tight thermal constraints in battery-powered systems.
Technical Context
The MP20048DJ-LF-Z implements a BICMOS-based NMOS voltage-follower architecture that eliminates output capacitor requirements by inherently stabilizing via high-gain error amplifier and precision 1.234V bandgap reference. Its feedback loop directly senses VFB, enabling programmable output via external resistor divider without compensation components.
Thermal protection activates at +140°C junction temperature with 10°C hysteresis, while current limiting caps output at 270–450mA depending on input voltage and temperature. Shutdown current is ≤1μA when EN is pulled low, supporting low-power sleep modes in portable devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 250mA continuous - supports point-of-load regulation for microcontrollers and FPGAs without thermal derating at ambient ≤85°C |
| Dropout Voltage | 62.5mV at 250mA - enables operation with <65mV VIN–VOUT margin, critical for Li-ion single-cell (3.0–3.6V) to 2.5V/3.3V rails |
| Output Accuracy | ±1% at TA=25°C - ensures stable core voltage for DSPs and ASICs without post-production trimming |
| PSRR | 48dB at 100Hz - suppresses switching noise from upstream DC/DC converters in mixed-signal systems |
| Ground Current | 350μA at 10mA load - minimizes quiescent power loss in always-on sensor nodes and real-time clocks |
| Enable Threshold | VEN(HI) = 1.7V, VEN(LO) = 0.5V - compatible with 1.8V/3.3V GPIO control without level-shifting |
| Thermal Shutdown | +140°C activation with +130°C reset - prevents permanent damage during sustained overload or poor PCB heatsinking |
Pinout & Package
MP20048DJ-LF-Z is housed in a RoHS-compliant TSOT23-5 package (1.00mm max height, 2.90mm × 1.60mm footprint), optimized for high-density PCB layouts and automated assembly.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply connection | Accepts 1.7V–5.5V unregulated input; requires local 1μF ceramic bypass capacitor per datasheet layout guidelines |
| 2 GND | Power ground reference | Low-impedance return path for regulator current and feedback network; must connect to solid ground plane |
| 3 EN | Positive-enable logic input | Active-high control: ≥1.7V enables regulation; ≤0.5V forces shutdown with ≤1μA quiescent current |
| 4 FB | Feedback voltage sense node | Monitors divided output voltage; sets VOUT = 1.234V × (1 + R1/R2); no compensation required |
| 5 OUT | Regulated output terminal | Delivers stable voltage without mandatory output capacitor; optional C2 improves transient response and noise |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free operation | Stable with zero output capacitance - eliminates BOM cost, board area, and aging-related drift in ceramic caps |
| Ultra-low dropout | 62.5mV at 250mA - extends battery runtime in single-cell applications by minimizing voltage headroom loss |
| Programmable output | 1.234V–5V via external resistive divider - enables precise voltage matching for diverse SoC I/O and core rails |
| Integrated protection | Thermal shutdown + current limit - prevents latch-up and catastrophic failure under fault conditions without external circuitry |
| Low-noise performance | 37μVRMS (10Hz–100kHz) - suitable for analog front-ends and RF power amplifiers requiring clean bias supplies |
Applications
| Portable Medical Sensors | VCO Power Supply |
|---|---|
Use Scenario: Wearable ECG patch with ultra-low-power MCU and analog signal chain operating from coin-cell battery. IC Role / Device Role / Timing Role: Primary LDO supplying 1.8V to ADC and 3.3V to BLE radio, enabled only during measurement bursts. Use Value: Capacitor-free design avoids electrolytic cap leakage and size penalty; 350μA ground current extends battery life beyond 12 months. | Use Scenario: Low-phase-noise VCO in 2.4GHz ISM-band transceiver requiring ultra-clean 3.3V bias rail. IC Role / Device Role / Timing Role: Post-regulator filtering ripple from switching DC/DC converter feeding VCO tuning and buffer stages. Use Value: 48dB PSRR at 100Hz and 37μVRMS noise prevent close-in phase noise degradation and spurious emissions. |
| Post-Regulation for Buck Converters | FPGA Core Voltage Regulation |
Use Scenario: Industrial PLC with 5V buck converter followed by multiple LDOs for isolated I/O and analog sections. IC Role / Device Role / Timing Role: Final-stage LDO cleaning residual switching noise before sensitive analog-to-digital conversion. Use Value: No output capacitor needed simplifies layout near ADC reference inputs; 0.0005%/mA load regulation maintains accuracy across dynamic current steps. | Use Scenario: FPGA development board requiring configurable 1.2V core and 2.5V I/O rails from shared 3.3V intermediate bus. IC Role / Device Role / Timing Role: Adjustable LDO generating precise core voltage with feedback divider, controlled via FPGA GPIO. Use Value: ±1% output accuracy ensures reliable FPGA configuration and timing closure; 250mA rating covers peak logic cluster current. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B252MR-G | Requires 1μF minimum ceramic output capacitor; 200mA output; 250mV dropout at full load | Lacks capacitor-free operation and higher dropout limits use in low-headroom battery systems | Select when cost sensitivity outweighs capacitor elimination and ultra-low dropout needs |
| Analog Devices ADP125ARHZ-R7 | Needs 1μF output cap; 500mA output; 130mV dropout at 500mA; fixed-output variants only | Higher current but fixed-VOUT options limit flexibility; larger SOT-23-5 footprint than TSOT23-5 | Choose for higher current delivery where programmability and minimal dropout are secondary |
Compared with XC6219B252MR-G and ADP125ARHZ-R7, MP20048DJ-LF-Z uniquely delivers stable regulation without any output capacitor while achieving sub-65mV dropout - essential for maximizing runtime and minimizing board area in compact, battery-powered designs.
Availability
MP20048DJ-LF-Z is available at Aetrix Electronics and suitable for portable medical sensors, VCO power supplies, post-regulation for buck converters, and FPGA core voltage regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP20048DJ-LF-Z 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
Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance analog and power ICs, with expertise in DC/DC converters, LDOs, motor drivers, and LED drivers since 1997.
The MP20048 belongs to MPS's capacitor-free LDO product line, engineered specifically for space-constrained, battery-powered applications where eliminating output capacitors reduces bill-of-materials cost, PCB area, and reliability risks from capacitor aging or microphonics.
FAQ
What is the minimum input voltage required for MP20048DJ-LF-Z to regulate a 2.5V output?
The minimum input voltage is determined by VOUT + VDO = 2.5V + 0.0625V = 2.5625V, or 1.7V - whichever is greater. For 2.5V output, the device requires at least 2.5625V input to maintain regulation at 250mA load, per the 62.5mV dropout specification at full current.
Can MP20048DJ-LF-Z be used without any external capacitors?
Yes - the MP20048DJ-LF-Z is explicitly designed for capacitor-free operation. The internal NMOS voltage-follower topology provides inherent stability without output or feedforward capacitors. A 1μF input capacitor (C1) is recommended for EMI suppression but not required for loop stability.
How does the enable pin behave during power-up?
The EN pin has hysteresis: it asserts high at ≥1.7V and releases low at ≤0.5V. During gradual power ramp, the device remains off until VIN exceeds ~1.7V and EN reaches threshold; this prevents erratic startup. Floating EN is prohibited - tie to VIN or controller GPIO with pull-up if unused.
What is the maximum allowable power dissipation at 85°C ambient?
Using θJA = 220°C/W and TJ(MAX) = 125°C, PD(MAX) = (125 − 85)/220 = 0.182W. At 250mA load and 62.5mV dropout, power dissipation is 15.6mW - well within safe limits, confirming no thermal derating is needed in standard PCB layouts.
Does MP20048DJ-LF-Z support adjustable output voltages below 1.234V?
No - the internal reference is fixed at 1.234V (min/max 1.221V–1.247V), and the feedback architecture requires VOUT ≥ VFB. Output voltages less than 1.234V cannot be achieved; the lowest programmable output is 1.234V (achieved with R1 = 0Ω, R2 open).
Is the TSOT23-5 package of MP20048DJ-LF-Z compatible with standard SOT-23-5 footprints?
No - TSOT23-5 has a smaller body (2.90mm × 1.60mm) and tighter lead pitch (0.95mm) versus standard SOT-23-5 (2.92mm × 1.30mm, 0.95mm pitch). While pinout matches, the TSOT23-5's reduced width and different land pattern require dedicated PCB layout per JEDEC MO-193 AA specification.
MP20048DJ-LF-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.234V
- Voltage - Output (Max):
- 5V
- Voltage Dropout (Max):
- 0.0625V @ 250mA (Typ)
- Current - Output:
- 250mA
- Current - Quiescent (Iq):
- 800 µA
- Current - Supply (Max):
- -
- PSRR:
- 48db ~ 23dB (100Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-5
MP20048DJ-LF-Z FAQ
1.How can I place an order for MP20048DJ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP20048DJ-LF-Z 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 MP20048DJ-LF-Z reliable?
The price and inventory of MP20048DJ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP20048DJ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP20048DJ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP20048DJ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP20048DJ-LF-Z?
MP20048DJ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP20048DJ-LF-Z 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 MP20048DJ-LF-Z?
For technical support, including MP20048DJ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP20048DJ-LF-Z requirements.
6.How does Aetrix verify that MP20048DJ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP20048DJ-LF-Z 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 MP20048DJ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP20048DJ-LF-Z?
All MP20048DJ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP20048DJ-LF-Z, 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 MP20048DJ-LF-Z part is unused and in its original packaging.
Return procedure for MP20048DJ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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