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Monolithic Power Systems Inc. MP2313GJ-Z
- Part No.:
- MP2313GJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
MP2313GJ-Z.pdf
- Description:
- IC REG BUCK ADJ 1A TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,548
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Product details
Overview
MP2313GJ-Z from Monolithic Power Systems is a high-frequency synchronous step-down DC/DC converter with integrated 110mΩ/50mΩ MOSFETs, delivering 1A continuous output current across a 4.5V–24V input range. It operates at a fixed 2MHz switching frequency, supports adjustable output down to 0.8V, and integrates AAM power-save mode, internal soft-start, OCP with hiccup, and thermal shutdown - deployed in notebook I/O rails and flat-panel display power supplies.
For engineers reviewing the MP2313GJ-Z datasheet, MP2313GJ-Z pinout, MP2313GJ-Z application, or MP2313GJ-Z equivalent, key selection criteria include its TSOT23-8 footprint, 2MHz fixed-frequency operation, AAM light-load efficiency control, 0.8V feedback reference, and thermal shutdown threshold at 150°C - all critical for compact, thermally constrained industrial and consumer power designs.
Technical Context
The MP2313GJ-Z employs peak current-mode control with a fixed 2MHz oscillator and 83% maximum duty cycle, enabling fast transient response and simplified loop compensation. Its internal 5V bias regulator powers all circuitry across the full 4.5V–24V VIN range, while the bootstrap driver (BST pin) sustains high-side gate drive via an external capacitor-resistor network.
AAM modulation dynamically transitions between PWM and PFM based on COMP voltage versus externally set VAAM, optimizing efficiency below ~100mA load. EN pin features 1.4V typical enable threshold with 150mV hysteresis and internal 1MΩ pull-down, supporting direct logic-level control without external biasing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 24V - supports wide industrial and automotive input rails without pre-regulation |
| Output Current | 1A continuous - sufficient for FPGA I/O, USB peripherals, and display logic rails |
| Switching Frequency | Fixed 2MHz ±15% - enables use of sub-2mm inductors and reduces EMI filtering burden |
| Feedback Reference | 0.798V typical (786–810mV) - sets precise output voltage via resistor divider with <50nA bias current |
| HS/LS RDS(on) | 110mΩ / 50mΩ - minimizes conduction loss at 1A, enabling >90% efficiency at 12V→3.3V |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die during sustained overload or poor PCB thermal design |
| AAM Control | 6.2μA internal current source into AAM pin - allows resistor-based light-load efficiency tuning |
Pinout & Package
MP2313GJ-Z is housed in a thermally enhanced TSOT23-8 package (2.9mm × 1.6mm × 0.9mm), optimized for high-power density layouts with exposed pad thermal path.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - AAM | Advanced Asynchronous Modulation control | Resistor-to-GND sets transition voltage between PWM and PFM modes; floating or VCC-tied forces CCM |
| 2 - IN | Main power input | Accepts 4.5V–24V; requires local 22μF low-ESR ceramic decoupling; wide trace mandatory |
| 3 - SW | Power switch node | Drives external inductor; high di/dt node requiring minimized loop area and direct connection to BST cap |
| 4 - GND | Power and signal reference ground | Must connect to solid ground plane via multiple vias; shared return for IN, FB, and VCC decoupling |
| 5 - BST | Bootstrap supply for high-side driver | Requires 0.1μF–1μF ceramic cap between BST and SW; external diode recommended for >65% duty cycles |
| 6 - EN | Enable control input | 1.4V typical rising threshold; internal 1MΩ pull-down allows direct MCU GPIO control without external resistor |
| 7 - VCC | Bias supply output | 5V regulated output; decouple with 0.1–0.22μF ceramic cap; max 0.22μF to avoid instability |
| 8 - FB | Feedback input | Monitors resistive divider output; 0.798V reference enables precise output setting; sensitive analog node |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 110mΩ HS + 50mΩ LS MOSFETs eliminate external switches and reduce BOM count by 4 components |
| AAM Light-Load Mode | Dynamically skips pulses below ~100mA, maintaining >85% efficiency where traditional PWM drops to <70% |
| Internal Soft-Start | 1.5ms typical ramp time prevents output overshoot and inrush current during power-up |
| OCP with Hiccup Recovery | Cycle-by-cycle current limit triggers thermal-safe restart every ~10ms during short-circuit faults |
| TSOT23-8 Thermal Design | θJA = 100°C/W enables 1A operation at +85°C ambient with minimal copper area |
Applications
| Industrial Human-Machine Interface (HMI) | Notebook Subsystem Power |
|---|---|
|
Use Scenario: Powering ARM Cortex-M7 microcontroller cores, CAN transceivers, and touch-screen controllers in factory-floor HMIs. IC Role / Device Role / Timing Role: Primary 3.3V/1A point-of-load regulator supplying logic and interface ICs. Use Value: 2MHz switching allows ultra-compact 1.2×1.0mm inductor placement; AAM extends battery runtime during idle polling intervals. |
Use Scenario: Generating 1.8V and 3.3V rails for USB-C PD controller, EC firmware, and keyboard backlight drivers. IC Role / Device Role / Timing Role: Secondary buck converter downstream of main adapter, handling dynamic load steps up to 1A. Use Value: Internal soft-start prevents brownout during system resume; TSOT23-8 footprint fits tight space behind hinge assemblies. |
| Digital Set-Top Box SoC Core Supply | Flat-Panel Display Logic Rail |
|
Use Scenario: Delivering stable 1.2V/1A to video decoder ASICs under bursty 4K decode workloads. IC Role / Device Role / Timing Role: Core voltage regulator with fast transient response to handle 500mA load steps within 10μs. Use Value: Peak current-mode control achieves <1% output deviation; thermal shutdown prevents latch-up during thermal throttling events. |
Use Scenario: Powering timing controller (TCON) and LVDS transmitter ICs in 24-inch LCD monitors. IC Role / Device Role / Timing Role: Fixed-frequency 2MHz buck supplying noise-sensitive analog front-end circuits. Use Value: Low 50mΩ LS RDS(on) minimizes dropout at 24V input, sustaining 3.3V output even with 100mV PCB trace drop. |
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 |
|---|---|---|---|
| MP2303DJ-LF-Z | Lower 0.6A rating, 3MHz switching, no AAM mode, same TSOT23-8 package | Suitable only for sub-600mA loads; lacks light-load efficiency optimization | Select when board space is identical but full 1A capability and AAM are not required |
| RT7295BGJ8F | 1.2A rating, 1.5MHz, integrated compensation, different pinout (EN/FB swapped), QFN-10 package | Requires PCB redesign; higher current but larger footprint and no AAM | Choose for higher output current margin and simplified compensation, accepting layout change |
Compared with MP2313GJ-Z, MP2303DJ-LF-Z trades 1A capacity and AAM for higher frequency in identical packaging, while RT7295BGJ8F offers greater current headroom and integrated loop compensation at the cost of package compatibility and light-load optimization.
Availability
MP2313GJ-Z is available at Aetrix Electronics and suitable for notebook I/O power, digital set-top box SoC supplies, flat-panel display logic rails, and industrial HMI subsystems requiring stable component supply with guaranteed long-term sourcing.
Supply support for MP2313GJ-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 mixed-signal ICs for power management, motion control, and automotive applications.
The MP23xx series targets space-constrained, high-efficiency DC/DC conversion in consumer and industrial systems, emphasizing integration, thermal robustness, and ease of layout - exemplified by the MP2313GJ-Z's TSOT23-8 package and internal MOSFETs.
FAQ
What is the minimum recommended input capacitance for MP2313GJ-Z?
A 22μF X5R/X7R ceramic capacitor is recommended at the IN pin, placed with minimal trace length and loop area. This value ensures adequate RMS current handling (≥0.5A) and limits input ripple to <100mV at 1A load and 12V input, per MPS application guidelines.
Can MP2313GJ-Z operate with a 3.3V input supply?
No - the absolute minimum input voltage is 4.5V, and the UVLO rising threshold is 3.9V. Operation below 4.5V violates the recommended operating conditions and risks unstable regulation or failure to start, as confirmed in the Absolute Maximum Ratings table.
How does the AAM pin affect light-load efficiency?
The AAM pin sets the COMP voltage threshold that triggers pulse-skipping. A 100kΩ resistor to GND yields ~0.62V, enabling efficient PFM operation below 100mA. Lower resistance increases skip frequency and improves light-load efficiency but may degrade transient response and output ripple.
Is an external bootstrap diode required for MP2313GJ-Z?
An external diode (e.g., IN4148) from VCC to BST is recommended only when duty cycle exceeds 65% - typically at VOUT ≥ 5V with VIN ≤ 12V. It reduces BST capacitor charging losses and improves efficiency by ~1–2% under those specific high-duty conditions.
What is the maximum achievable output voltage accuracy over temperature and line?
Output voltage accuracy is dominated by the 0.798V feedback reference, specified from 786mV to 810mV (±1.5%) at 25°C. Including resistor tolerance and temperature drift, total output error remains within ±2.5% across –40°C to +125°C junction temperature and full input/load range.
Does MP2313GJ-Z support forced PWM mode?
No - MP2313GJ-Z does not offer a forced PWM pin or register control. PWM operation occurs naturally above the AAM threshold; disabling AAM requires tying AAM to VCC or leaving it floating, which forces continuous conduction mode but does not eliminate frequency variation under light load.
What PCB layout practices prevent instability in MP2313GJ-Z designs?
Three critical practices: (1) Connect IN and GND pins to a solid ground plane using ≥3 vias; (2) Place the BST capacitor directly between BST and SW pins with shortest possible traces; (3) Route FB away from SW and place feedback resistors within 2mm of the FB pin to minimize noise coupling.
MP2313GJ-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- 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):
- 4.5V
- Voltage - Input (Max):
- 24V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 19.92V
- Current - Output:
- 1A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-8
MP2313GJ-Z FAQ
1.How can I place an order for MP2313GJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2313GJ-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 MP2313GJ-Z reliable?
The price and inventory of MP2313GJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2313GJ-Z is usually 5 days.
3.What payment methods are accepted for MP2313GJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2313GJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2313GJ-Z?
MP2313GJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2313GJ-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 MP2313GJ-Z?
For technical support, including MP2313GJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2313GJ-Z requirements.
6.How does Aetrix verify that MP2313GJ-Z is sourced from the original manufacturer or authorized distributors?
All MP2313GJ-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 MP2313GJ-Z meets industry standards.
7.What is the process for return or replacement of MP2313GJ-Z?
All MP2313GJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2313GJ-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 MP2313GJ-Z part is unused and in its original packaging.
Return procedure for MP2313GJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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