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Monolithic Power Systems Inc. MP2457GJ-P
- Part No.:
- MP2457GJ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP2457GJ-P.pdf
- Description:
- IC REG BUCK ADJ 600MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,644
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Product details
Overview
MP2457GJ-P from Monolithic Power Systems is a 2MHz synchronous step-down DC/DC converter with integrated 400mΩ high-side and 200mΩ low-side MOSFETs, delivering up to 0.6A output current across a 5V–36V input range. It features internal compensation, precision 0.8V feedback reference, 65μA quiescent current, and operates in pulse-skipping mode for light-load efficiency-enabling use in automotive infotainment power rails and battery-backed industrial meters.
For engineers reviewing the MP2457GJ-P datasheet, MP2457GJ-P pinout, MP2457GJ-P application, or MP2457GJ-P equivalent, key selection considerations include its TSOT23-6 package footprint, fixed 2MHz switching frequency, shutdown current of 0.6μA, and guaranteed operation from –40°C to +125°C industrial temperature range.
Technical Context
The MP2457GJ-P employs current-mode control with cycle-by-cycle peak-current limiting and frequency foldback during startup or short-circuit conditions to prevent inductor current runaway. Its internal error amplifier compares FB voltage against a trimmed 0.8V reference and drives a COMP node that sets switch conduction time.
It integrates a dedicated bootstrap regulator (BST–SW) for high-side gate drive, supports low-dropout operation via extended duty cycle (up to 15µs on-time), and includes thermal shutdown with 175°C trip point and 30°C hysteresis. Enable logic uses 1.8V rising/1.55V falling thresholds with internal 1.7MΩ pull-down.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 36V - supports wide-range industrial and automotive supply rails including 12V, 24V, and 36V battery systems. |
| Output Current | 0.6A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in compact embedded systems. |
| Switching Frequency | 2MHz fixed - enables use of small external inductors (e.g., 10–22µH) and reduces EMI filtering requirements. |
| Feedback Reference | 0.8V ±2% - allows precise output regulation from 0.8V to 0.95·VIN using standard resistor dividers. |
| Quiescent Current | 65μA - ensures minimal battery drain in always-on or sleep-mode applications like smart meters. |
| Shutdown Current | 0.6μA - enables ultra-low-power system-level standby without external load switches. |
| Thermal Shutdown | 175°C with 30°C hysteresis - provides robust fault protection while allowing recovery after cooling. |
Pinout & Package
MP2457GJ-P is housed in a thermally enhanced TSOT23-6 package (0.95mm height, 2.9mm × 1.6mm footprint), optimized for space-constrained PCB layouts and compatible with standard SMT reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BST | Bootstrap supply | Provides floating gate drive voltage for high-side MOSFET; requires 0.1μF ceramic capacitor between BST and SW. |
| 2 - GND | Power ground | Main return path for output current and control circuitry; must be connected to low-impedance ground plane near output capacitor. |
| 3 - FB | Feedback input | Senses regulated output via resistor divider; internal 0.8V reference enables adjustable VOUT from 0.8V to 0.95·VIN. |
| 4 - EN | Enable control | Logic-level input with 1.8V rising/1.55V falling threshold; float-to-disable or pull low for <1μA shutdown current. |
| 5 - VIN | Main input supply | Accepts 5–36V; powers internal regulator, gate drivers, and control logic; requires local 4.7μF ceramic decoupling. |
| 6 - SW | Switch node | Drives external inductor; connects internally to both MOSFETs; high dv/dt node requiring tight layout and minimal trace length. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 400mΩ HS / 200mΩ LS MOSFETs - eliminates external FETs and gate drivers, reducing BOM count and layout complexity. |
| Internal Compensation | Single-pole, single-zero network - enables stable operation with ceramic or electrolytic output capacitors without external components. |
| Pulse-Skipping Mode | Reduces switching and gate-drive losses below ~50mA load - maintains >85% efficiency at 1mA output current. |
| Low-Dropout Operation | Supports >95% duty cycle with 15µs max on-time - sustains regulation down to VIN ≈ VOUT + 0.5V under light loads. |
| Frequency Foldback | Reduces fSW during overload/startup - prevents inductor saturation and output collapse when current limit is engaged. |
Applications
| Power Meters | Aftermarket Automotive |
|---|---|
|
Use Scenario: Smart electricity meter with isolated RS-485 interface and real-time clock backup. IC Role / Device Role / Timing Role: Primary 5V/0.6A rail generator from 12–36V vehicle battery or auxiliary supply. Use Value: 65μA quiescent current extends supercapacitor hold-up time; 36V max input withstands load-dump transients. |
Use Scenario: USB-C car charger with dual-output (5V/3A + 9V/2A) and display backlight driver. IC Role / Device Role / Timing Role: Auxiliary 3.3V bias rail for MCU, CAN transceiver, and OLED controller. Use Value: TSOT23-6 footprint fits tight dashboard PCBs; 2MHz switching avoids AM radio band interference. |
| Multi-Function Printers | Industrial IoT Sensors |
|
Use Scenario: Paper feed motor driver board requiring clean 3.3V logic supply alongside 24V stepper control. IC Role / Device Role / Timing Role: Post-regulator converting 12V intermediate rail to noise-sensitive 3.3V digital domain. Use Value: Meets 0.1% output ripple spec with ceramic caps; internal soft-start prevents inrush-induced brownouts. |
Use Scenario: Wireless vibration sensor node powered by LiSOCl₂ battery with 10-year shelf life requirement. IC Role / Device Role / Timing Role: Main system regulator enabling ultra-low-power sleep cycles and wake-on-event operation. Use Value: 0.6μA shutdown current minimizes self-discharge; guaranteed –40°C to +125°C operation supports outdoor deployment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DJ-LF-Z | Same 2MHz frequency and TSOT23-6 package, but rated for 0.5A output and lacks frequency foldback. | Lower current capability limits use in 0.6A+ loads; no short-circuit protection during startup. | Select only if load current remains ≤0.5A and system-level fault handling is implemented externally. |
| TI TPS62840DRLR | 2.5V–6V input, 1.8A output, 1.8MHz switching, 250nA IQ - narrower VIN range but lower quiescent current. | Not suitable for 12–36V automotive or metering inputs; optimized for single-cell Li-ion systems. | Prefer for battery-powered portable devices; reject for industrial or automotive primary conversion. |
Compared with MP2457GJ-P, MP2451DJ-LF-Z trades current headroom and fault robustness for identical footprint and cost, while TPS62840DRLR offers superior ultra-low-IQ performance but cannot replace MP2457GJ-P in wide-input applications due to its 6V VIN limit.
Availability
MP2457GJ-P is available at Aetrix Electronics and suitable for power meters, aftermarket automotive modules, multi-function printers, and industrial IoT sensors requiring stable component supply across extended temperature and input voltage ranges.
Supply support for MP2457GJ-P 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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP2457 belongs to MPS's high-voltage synchronous buck converter product line, engineered for reliability in harsh environments such as automotive, industrial, and energy metering applications where wide VIN, low IQ, and thermal resilience are critical.
FAQ
What is the minimum recommended output capacitor for stable operation?
The MP2457GJ-P is stable with ≥4.7μF ceramic output capacitance and low ESR (<10mΩ). For 5V/0.6A operation, a 10μF X5R 0603 ceramic capacitor meets ripple and transient response requirements while maintaining phase margin above 45°.
Can MP2457GJ-P operate with an input voltage below 5V?
No - the absolute minimum operating VIN is 5V per datasheet specifications. Below this, UVLO prevents startup. The 4.6V rising threshold and 3.9V falling threshold ensure reliable enable/disable behavior only within the 5–36V range.
How does the internal current limit behave under short-circuit conditions?
The MP2457GJ-P implements cycle-by-cycle current limiting with typical ILIM = 0.9A. During sustained short circuits, frequency foldback reduces switching frequency to ~50kHz, limiting average inductor current and preventing thermal runaway until shutdown occurs at 175°C.
Is external compensation required for stability?
No - the MP2457GJ-P includes dedicated internal compensation optimized for ceramic and electrolytic output capacitors. No external RC network is needed; stability is guaranteed across 1–100μF output capacitance with ESR from 1mΩ to 100mΩ.
What is the maximum allowable PCB copper area for thermal relief in TSOT23-6?
For optimal thermal performance, connect the exposed pad (pin 2 GND) to ≥100mm² of 2oz copper on the top layer, with ≥4 thermal vias (0.3mm diameter) to inner ground planes. This achieves θJA ≈ 85°C/W, enabling full 0.6A load at TA = 85°C.
Does MP2457GJ-P support forced PWM mode?
No - it operates exclusively in automatic PWM/PSM hybrid mode. Pulse-skipping is inherent at light loads; there is no pin or register to force continuous conduction mode (CCM) across all load conditions.
What is the BST capacitor voltage rating requirement?
A 0.1μF X5R or X7R ceramic capacitor rated for ≥10V is required between BST and SW. This withstands the 5V bootstrap voltage plus ringing spikes up to 2V peak-to-peak observed during 2MHz switching transitions.
MP2457GJ-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 34.2V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MP2457GJ-P FAQ
1.How can I place an order for MP2457GJ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2457GJ-P 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 MP2457GJ-P reliable?
The price and inventory of MP2457GJ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2457GJ-P is usually 5 days.
3.What payment methods are accepted for MP2457GJ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2457GJ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2457GJ-P?
MP2457GJ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2457GJ-P 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 MP2457GJ-P?
For technical support, including MP2457GJ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2457GJ-P requirements.
6.How does Aetrix verify that MP2457GJ-P is sourced from the original manufacturer or authorized distributors?
All MP2457GJ-P 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 MP2457GJ-P meets industry standards.
7.What is the process for return or replacement of MP2457GJ-P?
All MP2457GJ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2457GJ-P, 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 MP2457GJ-P part is unused and in its original packaging.
Return procedure for MP2457GJ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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