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Monolithic Power Systems Inc. MP2333CGTL-Z
- Part No.:
- MP2333CGTL-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-583
- Datasheet:
-
MP2333CGTL-Z.pdf
- Description:
- IC REG BUCK ADJ 3A SOT583
- Quantity:
- Payment:
- Shipping:
Inventory:4,545
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Product details
Overview
MP2333CGTL-Z from Monolithic Power Systems is a synchronous step-down DC-DC converter IC delivering 3A continuous output current with 4.2V–18V input range, 650kHz fixed switching frequency, and forced continuous conduction mode (CCM) operation. It integrates 75mΩ/40mΩ high-side/low-side MOSFETs, features power-good (PG) open-drain output, programmable soft-start, and operates in SOT583 (1.6mm × 2.1mm) package for compact point-of-load regulation in space-constrained consumer electronics.
For engineers reviewing the MP2333CGTL-Z datasheet, MP2333CGTL-Z pinout, MP2333CGTL-Z application, or MP2333CGTL-Z equivalent, this device supports fast transient response via constant-on-time (COT) control, enables pre-bias start-up, provides hiccup-mode over-current protection, and delivers tight output regulation (±1.9% VREF accuracy) across –40°C to +125°C junction temperature.
Technical Context
The MP2333CGTL-Z employs constant-on-time (COT) control architecture to achieve sub-10µs load transient response without external compensation. Its internal high-side and low-side N-channel MOSFETs are driven by a bootstrap-regulated floating gate driver with 2.2V BST UVLO threshold and 150mV hysteresis.
Operation is enforced in continuous conduction mode (CCM) with valley-current limiting for OCP, thermal shutdown at 150°C (20°C hysteresis), and integrated under-voltage lockout (UVLO) with 4.0V rising threshold and 400mV hysteresis. PG status reflects output voltage within ±8% of VREF (789–821mV) after soft-start completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.2V to 18V - supports wide industrial and consumer supply rails including 5V, 12V, and 18V battery or adapter inputs. |
| Output Current | 3A continuous - sufficient for powering SoCs, FPGAs, and memory subsystems in game consoles and set-top boxes. |
| Switching Frequency | 650kHz - enables use of small external inductors (e.g., 1.5–3.3µH) and ceramic capacitors while balancing EMI and efficiency. |
| RDS(ON) (HS/LS) | 75mΩ / 40mΩ - reduces conduction loss and improves full-load efficiency up to 95% at 12VIN/3.3VOUT. |
| Quiescent Current | 200µA - minimizes standby power draw in always-on subsystems such as HDMI receivers or audio processors. |
| Feedback Reference | 805mV ±1.9% - sets precise output voltage via resistor divider; enables 1.0V to 13V adjustable outputs with <0.1% load regulation. |
| Soft-Start Time | Programmable via external capacitor - ensures monotonic VOUT ramp and prevents inrush into pre-biased loads. |
Pinout & Package
SOT583 (1.6mm × 2.1mm) thermally enhanced 8-pin package with exposed pad for improved heat dissipation; footprint compatible with automated placement and reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - PG | Power Good open-drain output | Signals valid regulation (VOUT ∈ 87–120% of VREF) after soft-start; requires external pull-up for system sequencing. |
| 2 - VIN | Main input supply rail | Accepts 4.2–18V; must be decoupled with ≥10µF ceramic capacitor placed within 1mm of pin for stable COT loop operation. |
| 3 - SW | Switch node | Connects to external inductor; high di/dt node requiring short, wide PCB trace and minimal loop area to reduce EMI. |
| 4 - GND | System ground reference | Primary return path for power and feedback; requires solid copper pour and multiple vias to thermal pad for thermal and noise performance. |
| 5 - BST | Bootstrap supply for high-side driver | Requires 1µF X5R/X7R ceramic capacitor between BST and SW to sustain gate drive during HS-FET conduction. |
| 6 - EN | Enable control input | Logic-high (>1.23V) enables regulator; internal 2.8V Zener clamp allows direct connection to VIN via 604kΩ pull-up for auto-start. |
| 7 - SS | Soft-start timing input | Charged by internal 7.3µA current source; external capacitor value determines ramp time per TSS(ms) = 2×VREF/ISS×CSS(nF). |
| 8 - FB | Feedback voltage sensing | Monitors output via resistor divider; 10–80nA input bias enables high-impedance dividers minimizing no-load current loss. |
Key Features
| Feature | Design Value |
|---|---|
| Forced PWM CCM operation | Eliminates mode-hopping discontinuities; ensures consistent 650kHz switching and predictable EMI spectrum across all load conditions. |
| Pre-bias start-up capability | Allows safe startup into externally powered outputs (e.g., hot-swap rails), preventing reverse current flow through LS-FET body diode. |
| Hiccup-mode over-current protection | Enters periodic restart cycle upon sustained overload or short-circuit, limiting average power dissipation and enabling self-recovery without host intervention. |
| Thermal shutdown with hysteresis | Shuts down at 150°C junction temperature and resumes operation only after die cools to ~130°C, preventing thermal runaway in enclosed environments. |
| Low 200µA quiescent current | Reduces no-load power loss in always-on subsystems (e.g., remote control receivers, HDMI CEC logic), extending battery life in portable devices. |
Applications
| Game Console Power Rails | Digital Set-Top Box Core Logic |
|---|---|
Use Scenario: Regulating 1.2V/1.8V/3.3V supplies for GPU, CPU, and DDR memory in handheld and home gaming platforms. IC Role / Device Role / Timing Role: Primary synchronous buck converter providing tightly regulated, low-noise core voltage with fast transient response to dynamic load steps. Use Value: Maintains <±10mV output deviation during 2.5A/µs load transients, ensuring stable clock domain operation and preventing logic errors during gameplay bursts. |
Use Scenario: Generating 5V and 3.3V rails for demodulator SoCs, video decoders, and USB peripherals in cable/satellite STBs. IC Role / Device Role / Timing Role: Compact, high-efficiency POL regulator replacing discrete controllers and external MOSFETs in dense board layouts. Use Value: Achieves >92% efficiency at 2A load from 12V input, reducing thermal load on plastic enclosures and eliminating need for heatsinks. |
| Flat-Panel Display Logic Supply | Industrial Human-Machine Interface |
Use Scenario: Powering FPGA configuration, timing controller, and interface ICs in LCD/OLED monitor mainboards. IC Role / Device Role / Timing Role: Secondary buck stage converting 12V system rail to 1.0V–3.3V logic voltages with PG signaling for sequenced power-up. Use Value: PG output synchronizes display initialization firmware with stable VOUT, preventing I²C bus lockups and panel initialization failures. |
Use Scenario: Providing isolated 3.3V/5V rails for ARM-based HMI controllers operating in factory-floor environments with wide ambient temperature swings. IC Role / Device Role / Timing Role: Robust, thermally resilient DC-DC solution supporting –40°C to +125°C junction operation with integrated thermal shutdown. Use Value: Delivers full 3A output current at 85°C ambient without derating, enabled by SOT583's low θJA (55°C/W) on standard 2-layer PCBs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2333GQKT-Z | Same die in QFN-8 (2mm × 2mm) package; higher thermal performance (θJA = 45°C/W) but larger footprint and no exposed pad solder mask defined. | Better suited for high-ambient or high-power-density designs where board space permits larger package and thermal vias are feasible. | Select when thermal margin is critical and PCB layout allows QFN-8; avoid if SOT583's 1.6mm × 2.1mm size is required for ultra-compact modules. |
| RT7295BGJ8F | 4.5–18V input, 3A, 600kHz, COT control; lacks PG output and pre-bias start-up; RDS(ON) = 85mΩ/50mΩ; IQ = 350µA. | Functional substitute where power-good sequencing is not required and slightly lower efficiency at light loads is acceptable. | Choose only if PG and pre-bias features are unnecessary; verify soft-start behavior and transient response meet system requirements before substitution. |
Compared with MP2333CGTL-Z, MP2333GQKT-Z offers superior thermal management in less space-constrained designs, while RT7295BGJ8F trades away PG and pre-bias functionality for cost-sensitive applications where those features are unused.
Availability
MP2333CGTL-Z is available at Aetrix Electronics and suitable for game consoles, digital set-top boxes, flat-panel television logic boards, and industrial HMIs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MP2333CGTL-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 power management ICs, with design centers in the US, China, and Taiwan, and global manufacturing partnerships.
The MP2333C product line targets space-constrained, high-efficiency DC-DC conversion in consumer electronics, delivering integrated synchronous buck solutions with COT control, robust protection, and minimal external components.
FAQ
What is the minimum recommended input capacitance for MP2333CGTL-Z?
A minimum 10µF X5R/X7R ceramic capacitor is required at VIN, placed within 1mm of pins 2 (VIN) and 4 (GND). This ensures stable COT loop operation and limits input ripple to <50mV peak-to-peak at full 3A load. Larger values (e.g., 22µF) further reduce ripple and improve transient response.
Can MP2333CGTL-Z operate with a pre-biased output?
Yes - MP2333CGTL-Z supports monotonic pre-bias start-up. When VOUT is externally held above 0V at startup, the internal BST refresh circuit and SS charging mechanism coordinate to prevent reverse current flow and ensure controlled ramp-up without output collapse or oscillation.
How is the soft-start time calculated for a given capacitor value?
Soft-start time is determined by TSS(ms) = (2 × VREF) / ISS × CSS(nF), where VREF = 0.805V, ISS = 7.3µA typical, and CSS is the external capacitor on pin 7. For example, a 100nF capacitor yields ~22ms soft-start time.
What is the maximum allowable output capacitance?
The maximum output capacitance is limited by soft-start timing: CO_MAX ≈ (ILIM_AVG − IOUT) × TSS / VOUT. With typical ILIM_AVG ≈ 2.5A, TSS = 22ms, and VOUT = 3.3V, CO_MAX ≈ 470µF. Exceeding this may cause failure to reach regulation during startup.
Does MP2333CGTL-Z support external synchronization?
No - MP2333CGTL-Z uses fixed-frequency constant-on-time (COT) control with no external sync input. Switching frequency varies ±25% over input voltage and temperature (485–815kHz), but remains centered at 650kHz under nominal conditions (VIN = 12V, TJ = 25°C).
What is the purpose of the BST capacitor, and what type is recommended?
The BST capacitor (1µF, X5R/X7R ceramic) forms a floating supply for the high-side gate driver. It must be placed directly between BST and SW pins with short traces. Its voltage rating should exceed 10V to withstand BST-SW swing up to 6.3V during operation.
How does the power-good (PG) signal behave during fault conditions?
PG goes low during EN deactivation, VIN UVLO, OCP hiccup events, thermal shutdown, or if VOUT falls below 87% or rises above 120% of VREF. It remains low until VOUT stabilizes within 92–107% of VREF and soft-start completes - ensuring reliable system-level power sequencing.
MP2333CGTL-Z Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- MP
- Package/Case:
- SOT-583
- 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):
- 4.2V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 13V
- Current - Output:
- 3A
- Frequency - Switching:
- 650kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-583
MP2333CGTL-Z FAQ
1.How can I place an order for MP2333CGTL-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP2333CGTL-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 MP2333CGTL-Z reliable?
The price and inventory of MP2333CGTL-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP2333CGTL-Z is usually 5 days.
3.What payment methods are accepted for MP2333CGTL-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP2333CGTL-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP2333CGTL-Z?
MP2333CGTL-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP2333CGTL-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 MP2333CGTL-Z?
For technical support, including MP2333CGTL-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP2333CGTL-Z requirements.
6.How does Aetrix verify that MP2333CGTL-Z is sourced from the original manufacturer or authorized distributors?
All MP2333CGTL-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 MP2333CGTL-Z meets industry standards.
7.What is the process for return or replacement of MP2333CGTL-Z?
All MP2333CGTL-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP2333CGTL-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 MP2333CGTL-Z part is unused and in its original packaging.
Return procedure for MP2333CGTL-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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