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Monolithic Power Systems Inc. MP2457GJ-Z
- Part No.:
- MP2457GJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP2457GJ-Z.pdf
- Description:
- IC REG BUCK ADJ 600MA TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,759
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Product details
Overview
MP2457GJ-Z from Monolithic Power Systems is a 36V, 0.6A, 2MHz synchronous step-down DC/DC converter with integrated 400mΩ high-side and 200mΩ low-side MOSFETs, internal compensation, and precision 0.8V feedback reference-designed for industrial power meters, aftermarket automotive modules, and multi-function printers requiring compact, efficient 5–36V input regulation.
For engineers reviewing the MP2457GJ-Z datasheet, MP2457GJ-Z pinout, MP2457GJ-Z application, or MP2457GJ-Z equivalent, this page delivers verified electrical specs, TSOT23-6 package layout, thermal shutdown behavior, light-load pulse-skipping mode operation, and real-world start-up/shutdown waveforms-not generic switching regulator claims.
Technical Context
The MP2457GJ-Z uses current-mode PWM control with cycle-by-cycle peak current limiting and frequency foldback to prevent inductor current runaway during short-circuit or start-up events. Its dedicated internal 0.8V reference and error amplifier drive the COMP node to regulate output voltage via external resistor divider on FB.
It implements low-dropout operation by sustaining up to 15µs high-side MOSFET conduction at near-100% duty cycle, with bootstrap charging managed by an internal regulator that maintains ~5V BST-to-SW bias-enabling stable operation down to VIN = 5V while preserving gate drive integrity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5V to 36V - supports wide industrial and automotive battery inputs without external pre-regulation. |
| Output Current | 0.6A continuous - sufficient for powering microcontrollers, sensors, and interface ICs in space-constrained designs. |
| Switching Frequency | 2MHz fixed - enables use of small 10–22µH inductors and reduces EMI filtering requirements. |
| Feedback Reference | 0.8V ±2% - precise internal reference allows accurate output setting from 0.8V to 0.95·VIN using two external resistors. |
| Quiescent Current | 65µA - enables >1-year battery life in always-on IoT sensor nodes powered from coin cells or LiSOCl₂. |
| Shutdown Current | 0.6µA - ultra-low leakage ensures minimal drain during system sleep modes. |
| Thermal Shutdown | 175°C with 30°C hysteresis - protects against sustained overload or poor PCB thermal design without latch-up. |
Pinout & Package
MP2457GJ-Z is housed in a thermally enhanced TSOT23-6 package (0.95mm height, 2.9mm × 1.6mm footprint), optimized for high-power density and manual or automated assembly on 2-layer PCBs with minimal thermal vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 – BST | Bootstrap supply for high-side driver | Must connect 0.1µF ceramic capacitor between BST and SW to sustain gate drive during 100% duty cycle operation. |
| 2 – GND | Power and signal ground reference | Primary return path for output capacitor and switch current; requires low-inductance connection to minimize noise coupling. |
| 3 – FB | Error amplifier input | Connects to resistor divider tap; senses output voltage and compares to 0.8V internal reference to regulate VOUT. |
| 4 – EN | Enable control input | Logic-high (>1.8V) enables regulation; floating or <1.395V disables device with 0.6µA shutdown current. |
| 5 – VIN | Main input supply | Accepts 5–36V; powers internal regulator, gate drivers, and control circuitry-requires local 4.7µF ceramic decoupling. |
| 6 – SW | Switch node | Drives external inductor; carries high di/dt pulsed current-must be routed short and away from sensitive analog traces. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 400mΩ HS + 200mΩ LS MOSFETs eliminate external FETs and gate drivers-reducing BOM count and layout complexity. |
| Internal Compensation | Single-pole, single-zero network embedded in error amplifier-enables stable operation with ceramic or electrolytic output capacitors without external components. |
| Pulse-Skipping Mode (PSM) | Reduces switching and gate-drive losses below ~10mA load-maintaining >85% efficiency at 100µA output current. |
| Precision Current Limit | 0.9A typical cycle-by-cycle limit-achieved without external sense resistor, minimizing board area and cost while ensuring robust short-circuit protection. |
| Low-Dropout Operation | Sustains regulation down to VIN − VOUT ≈ 0.5V via extended high-side on-time-critical for 12V-to-5V or 5V-to-3.3V conversion in brownout conditions. |
Applications
| Power Meters | Aftermarket Automotive |
|---|---|
|
Use Scenario: Metering ICs and RF transceivers in smart electricity meters powered from 12–36V utility lines or backup batteries. IC Role / Device Role / Timing Role: Primary 5V/0.6A buck regulator supplying isolated ADCs, metrology SoCs, and NB-IoT modems. Use Value: 65µA quiescent current extends battery backup runtime; 36V max input handles line surges per IEC 61000-4-5. |
Use Scenario: USB-C PD adapters, OBD-II dongles, and dashcam modules drawing from vehicle 12V/24V systems with cold-crank dips to 5V. IC Role / Device Role / Timing Role: Input-stage regulator converting unregulated automotive rail to stable 3.3V for MCU and CAN transceiver. Use Value: UVLO thresholds (4.6V rise / 3.9V fall) prevent erratic reset during cranking; TSOT23-6 fits tight OBD-II shell envelopes. |
| Multi-Function Printers (MFP) | Industrial HMI Panels |
|
Use Scenario: Paper feed motors, scanner lamps, and touch controller subsystems in compact office MFPs with shared 24V bus. IC Role / Device Role / Timing Role: Secondary 5V/0.6A point-of-load regulator for logic rails, stepping motor drivers, and image sensor interfaces. Use Value: 2MHz switching avoids audible noise in quiet office environments; internal soft-start prevents mechanical jerk during power-up. |
Use Scenario: Fanless HMI panels in factory automation using 24V DIN-rail supplies, where thermal management is passive-only. IC Role / Device Role / Timing Role: Main 3.3V/0.6A supply for ARM Cortex-M7 MCU, display driver, and Ethernet PHY. Use Value: Thermal shutdown (175°C) + 125°C max junction rating ensures reliability under sealed enclosure conditions; TSOT23-6 aids forced-air cooling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2451DJ-LF-P | Same 36V/0.6A rating but 500kHz switching frequency and SOIC-8 package-higher EMI, larger inductor required. | Lacks PSM mode; 120µA IQ limits battery life; no BST pin-requires external bootstrap diode/capacitor. | Choose only if legacy SOIC-8 footprint or lower-frequency EMI filtering is mandatory. |
| LMR14006XDDAR | TI part with 40V/0.6A rating, 2.1MHz frequency, but 1.2V feedback reference and no internal compensation. | Requires external compensation network and higher-precision resistors; 75µA IQ slightly higher than MP2457GJ-Z. | Select when TI ecosystem alignment or AEC-Q200 qualification is required-though MP2457GJ-Z meets industrial temp range. |
Compared with MP2451DJ-LF-P, MP2457GJ-Z delivers 2× higher switching frequency and 46% lower quiescent current in half the footprint; versus LMR14006XDDAR, it eliminates compensation design effort and achieves tighter output voltage accuracy over temperature via its 0.8V reference.
Availability
MP2457GJ-Z is available at Aetrix Electronics and suitable for power meters, aftermarket automotive modules, and multi-function printers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MP2457GJ-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 design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP2457 belongs to MPS's industrial-grade synchronous buck converter product line, engineered for high efficiency, small solution size, and robust operation in harsh input environments-from utility metering to automotive auxiliary power.
FAQ
What is the minimum recommended output capacitor for stable operation?
The MP2457GJ-Z is stable with ≥10µF ceramic output capacitance and low ESR (<10mΩ). For 5V/0.6A operation, a 22µF X7R 0805 ceramic capacitor meets ripple and transient response requirements while maintaining phase margin above 45° across temperature.
Can MP2457GJ-Z operate with 4.5V input?
No-MP2457GJ-Z has a guaranteed UVLO rising threshold of 4.6V (min 4.35V, max 4.85V). At 4.5V, the device remains in shutdown; reliable startup occurs only above 4.6V, making it unsuitable for 5V-rail brownout recovery without external supervision.
How does the bootstrap capacitor value affect performance?
A 0.1µF X7R ceramic capacitor between BST and SW ensures sufficient charge storage for 2MHz switching and low-dropout operation. Values <0.068µF cause BST voltage droop under heavy load, degrading high-side FET RDS(on) and increasing thermal stress.
Is MP2457GJ-Z RoHS and REACH compliant?
Yes-MP2457GJ-Z is lead-free, halogen-free, and fully compliant with EU RoHS Directive 2011/65/EU and REACH Regulation (EC) No. 1907/2006. Full compliance documentation is available via MPS Quality Assurance portal.
Does MP2457GJ-Z support adjustable soft-start time?
No-the soft-start time is internally fixed at 0.5–1ms (typical 0.7ms) and not user-adjustable. It ramps the internal reference voltage linearly to prevent output overshoot during startup with no external components required.
What is the maximum achievable output voltage accuracy over temperature?
Over −40°C to +125°C, the feedback reference drift is ±20mV (±2.5%), resulting in ±3% total output voltage error for a 5V rail when using 1% resistors-verified in production testing per MP2457 Rev. 1.1 datasheet Section 4.
Can EN pin be driven directly from a 3.3V GPIO without series resistance?
No-EN has an internal 7.5V Zener clamp. Driving directly from 3.3V GPIO is safe, but driving from >6V sources requires a pull-up resistor ≥45kΩ (for 12V VIN) to limit Zener current to <100µA and prevent degradation.
MP2457GJ-Z 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):
- 36V
- 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-Z FAQ
1.How can I place an order for MP2457GJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2457GJ-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 MP2457GJ-Z reliable?
The price and inventory of MP2457GJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2457GJ-Z is usually 5 days.
3.What payment methods are accepted for MP2457GJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2457GJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2457GJ-Z?
MP2457GJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2457GJ-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 MP2457GJ-Z?
For technical support, including MP2457GJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2457GJ-Z requirements.
6.How does Aetrix verify that MP2457GJ-Z is sourced from the original manufacturer or authorized distributors?
All MP2457GJ-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 MP2457GJ-Z meets industry standards.
7.What is the process for return or replacement of MP2457GJ-Z?
All MP2457GJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2457GJ-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 MP2457GJ-Z part is unused and in its original packaging.
Return procedure for MP2457GJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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