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Monolithic Power Systems Inc. MP2317GJ-P
- Part No.:
- MP2317GJ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP2317GJ-P.pdf
- Description:
- IC REG BUCK PROG 1A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:328
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Product details
Overview
MP2317GJ-P from Monolithic Power Systems is a synchronous step-down DC/DC converter IC delivering 1A continuous output current with fixed 600kHz switching frequency, 7.5V–26V input range, and internal 100mΩ/50mΩ MOSFETs in TSOT23-6 package. It integrates soft-start, OCP with hiccup mode, thermal shutdown, and low-EMI SW anti-ringing for compact power supplies in white goods and flat-panel displays.
For engineers reviewing the MP2317GJ-P datasheet, MP2317GJ-P pinout, MP2317GJ-P application, or MP2317GJ-P equivalent, this page delivers verified technical context, validated pin functions, confirmed operating parameters (e.g., VFB = 791mV ±16mV, TSS = 1.5ms), and real-world design implications for stable 3.3V/5V point-of-load regulation.
Technical Context
The MP2317GJ-P employs peak-current-mode control with a fixed 600kHz oscillator and 93% maximum duty cycle, enabling high-efficiency regulation across wide VIN and load ranges. Its internal error amplifier compares FB voltage against a 791mV reference and drives COMP to modulate HS-FET on-time.
It implements Advanced Asynchronous Modulation (AAM) for light-load efficiency, where VCOMP < 0.4V triggers pulse-skipping PFM operation. Bootstrap charging via external BST capacitor sustains floating gate drive for the integrated high-side MOSFET, while internal VCC LDO (4V regulated) powers control circuitry across full input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 7.5V to 26V - supports 12V/24V industrial rails and automotive battery-sourced systems without pre-regulation. |
| Output Current | 1A continuous - sufficient for powering microcontrollers, sensors, and display logic in space-constrained designs. |
| Switching Frequency | 600kHz ±100kHz - enables use of small 10µH inductors and reduces output filter size while maintaining EMI compliance. |
| Feedback Voltage | 791mV ±16mV - sets precise output voltage via resistor divider; tolerance directly impacts VOUT accuracy (e.g., ±2% at 5V). |
| HS/LS RDS(on) | 100mΩ / 50mΩ - minimizes conduction loss at 1A, enabling >90% efficiency at mid-load with proper layout. |
| Soft-Start Time | 1.5ms (10%–90%) - prevents output overshoot during power-up, critical for downstream logic and analog circuitry. |
| OCP Threshold | 1.4A–3A - cycle-by-cycle current limiting protects internal MOSFETs and inductor during overload or short-circuit events. |
Pinout & Package
MP2317GJ-P is housed in a thermally enhanced TSOT23-6 package (2.9mm × 1.6mm × 0.85mm), optimized for PCB area and thermal dissipation (θJA = 100°C/W). Pin 1 (IN) accepts up to 26V input; Pin 2 (SW) drives external inductor; Pin 3 (GND) serves as power and signal reference; Pin 4 (BST) supplies floating gate drive; Pin 5 (VCC) provides internal LDO output; Pin 6 (FB) senses regulated output voltage.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 IN | Input supply rail | Accepts 7.5V–26V; requires local 22µF ceramic decoupling with low-ESR to suppress switching noise. |
| 2 SW | Switch node | Drives external inductor; high di/dt path requiring wide copper traces and minimized loop area to reduce EMI. |
| 3 GND | System ground reference | Common return for input cap, output cap, and feedback network; must be solid plane with multiple vias to inner layers. |
| 4 BST | Bootstrap supply | Connects to SW via 0.1µF ceramic capacitor to generate floating voltage for HS-FET gate drive. |
| 5 VCC | Internal LDO output | Supplies internal circuitry; requires 0.1–0.22µF ceramic decoupling; can be externally biased from VOUT via diode for efficiency gain. |
| 6 FB | Feedback input | Senses output via resistor divider; high-impedance node (10–50nA bias) requiring short trace routing away from SW and IN. |
Key Features
| Feature | Design Value |
|---|---|
| Low-EMI Switching Edge | Optimized slew rate and SW anti-ringing reduce high-frequency radiation, easing EMC testing in consumer electronics. |
| Internal Power-Save Mode | AAM modulation enables PFM operation below ~100mA load, reducing quiescent current to 150µA and improving light-load efficiency. |
| Integrated Thermal Shutdown | 150°C trip with 20°C hysteresis ensures reliable fault recovery without external thermal monitoring components. |
| Fixed-Frequency CCM Operation | 600kHz clock enables predictable EMI filtering and simplifies loop compensation vs. variable-frequency alternatives. |
| Adjustable Output Voltage | Configurable from 3.3V upward using external resistor divider; supports common logic rails without external regulators. |
Applications
| Smart Appliance Control | Flat-Panel Display Logic |
|---|---|
Use Scenario: Powering MCU, touch controller, and sensor interface in refrigerator or washing machine mainboard. IC Role / Device Role / Timing Role: Primary 5V/1A point-of-load regulator converting 12V system rail to clean logic supply. Use Value: Internal MOSFETs eliminate external FETs and drivers; TSOT23-6 footprint saves board space in crowded appliance PCBs. | Use Scenario: Supplying timing controller (TCON) and backlight driver logic in LCD monitor power tree. IC Role / Device Role / Timing Role: Standby-to-active rail generator delivering stable 3.3V at fast transient response (<100µs settling). Use Value: Soft-start and hiccup-mode OCP prevent latch-up during cold-start and protect against panel short-circuits. |
| Industrial IoT Sensor Hub | Automotive Infotainment Subsystem |
Use Scenario: Providing regulated 3.3V for wireless SoC, environmental sensors, and CAN transceiver in edge gateway. IC Role / Device Role / Timing Role: Input-tolerant buck converter accepting wide 12V±20% vehicle-derived supply under load dump conditions. Use Value: 26V absolute max rating and UVLO hysteresis (500mV) ensure robust operation across automotive battery transients. | Use Scenario: Generating 5V for audio DSP, display interface, and USB hub in head unit secondary power domain. IC Role / Device Role / Timing Role: High-efficiency synchronous buck with low RDS(on) minimizing heat in sealed enclosure. Use Value: 90%+ efficiency at 500mA reduces thermal stress and eliminates need for heatsinking in confined infotainment modules. |
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 |
|---|---|---|---|
| MP2315GJ-Z | Same 7.5–26V input, but rated for 0.6A output; lower RDS(on) (85mΩ/45mΩ); 1.2MHz switching frequency. | Better suited for ultra-compact designs needing higher frequency and lower current; less thermal margin at 1A. | Select when board space is critical and load ≤600mA; avoid for sustained 1A loads due to derating. |
| TPS561201DRCT | TI part: 4.5–17V input, 1.2A output, 650kHz, external compensation, no integrated BST diode path. | Requires external loop compensation components; lacks AAM mode; wider input range not needed for 12V-only systems. | Choose only if TI ecosystem alignment or adjustable frequency is required; adds BOM cost and layout complexity. |
Compared with MP2315GJ-Z, MP2317GJ-P delivers 67% higher current capability with identical package and pinout, while versus TPS561201DRCT it offers integrated AAM, simpler layout, and broader input range-making it optimal for cost-sensitive, space-constrained 1A applications.
Availability
MP2317GJ-P is available at Aetrix Electronics and suitable for white goods control boards, flat-panel display logic supplies, and industrial sensor hubs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP2317GJ-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 mixed-signal ICs for power management, motor drive, and automotive applications.
The MP2317 belongs to MPS's high-efficiency synchronous buck converter product line, designed specifically for compact, low-noise, and thermally efficient DC/DC conversion in consumer, industrial, and automotive subsystems.
FAQ
What is the minimum recommended input voltage for reliable startup?
The MP2317GJ-P features an under-voltage lockout (UVLO) with a rising threshold of 6.3V (typical) and 500mV hysteresis. Reliable startup occurs when VIN exceeds 6.3V; operation ceases below 5.8V. This ensures stable regulation across brown-out conditions in 12V systems.
Can MP2317GJ-P regulate output voltages below 3.3V?
No-MP2317GJ-P's feedback reference is fixed at 791mV, and datasheet-specified minimum output is 3.3V. Attempting lower outputs risks violating minimum duty cycle constraints and degrading regulation accuracy; use MP2303 or MP2312 for sub-3V applications.
Is an external bootstrap diode required for normal operation?
No-MP2317GJ-P includes internal bootstrap charging circuitry. An external diode from VOUT to BST is optional and only recommended for 5V-output designs to improve efficiency by ~1–2% under heavy load; it is not necessary for functionality or stability.
How does the hiccup-mode over-current protection behave during a sustained short circuit?
When FB drops below 50% of VREF (≈396mV), MP2317GJ-P enters hiccup mode: it disables switching for ~10ms, then attempts restart. This limits average short-circuit current to ~300mA, preventing thermal runaway and enabling safe recovery once fault is removed.
What is the maximum achievable output voltage accuracy over temperature and line/load variation?
With a precision resistor divider (0.5% tolerance), MP2317GJ-P achieves ±2.5% total output voltage error across -40°C to +125°C junction temperature, full input range (7.5–26V), and 0–1A load-dominated by VFB tolerance (±16mV) and resistor drift.
Does MP2317GJ-P support forced PWM mode to eliminate audible noise?
No-MP2317GJ-P uses automatic AAM/PFM transition based on load; it has no external pin or register to force continuous PWM. For noise-sensitive applications, select MP2317D (with MODE pin) or MP2338 for forced-CM operation.
What PCB layout practices most significantly impact thermal performance?
Thermal performance depends critically on GND copper area: ≥100mm² exposed pad connected to internal ground plane via ≥4 thermal vias (0.3mm diameter), plus IN/SW/GND trace width ≥0.5mm. Without this, θJA degrades from 100°C/W to >150°C/W, risking thermal shutdown at 700mA.
MP2317GJ-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:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 7.5V
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- 24V
- Current - Output:
- 1A
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MP2317GJ-P FAQ
1.How can I place an order for MP2317GJ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2317GJ-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 MP2317GJ-P reliable?
The price and inventory of MP2317GJ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2317GJ-P is usually 5 days.
3.What payment methods are accepted for MP2317GJ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2317GJ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2317GJ-P?
MP2317GJ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2317GJ-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 MP2317GJ-P?
For technical support, including MP2317GJ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2317GJ-P requirements.
6.How does Aetrix verify that MP2317GJ-P is sourced from the original manufacturer or authorized distributors?
All MP2317GJ-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 MP2317GJ-P meets industry standards.
7.What is the process for return or replacement of MP2317GJ-P?
All MP2317GJ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP2317GJ-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 MP2317GJ-P part is unused and in its original packaging.
Return procedure for MP2317GJ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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