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Monolithic Power Systems Inc. MP1470BGJ-P
- Part No.:
- MP1470BGJ-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP1470BGJ-P.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,696
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Product details
Overview
MP1470BGJ-P from Monolithic Power Systems is a synchronous step-down DC/DC converter with integrated 163mΩ high-side and 86mΩ low-side MOSFETs, delivering up to 2A continuous output current across a 4.7V–16V input range. It operates at a fixed 500kHz switching frequency with forced PWM mode, internal soft-start (1ms), and supports adjustable output voltages down to 0.8V-commonly used in compact power rails for digital set-top boxes and flat-panel displays.
For engineers reviewing the MP1470BGJ-P datasheet, MP1470BGJ-P pinout, MP1470BGJ-P application, or MP1470BGJ-P equivalent, key selection considerations include its TSOT23-6 package footprint, internal current-mode control loop stability, hiccup-mode over-current protection during short-circuit events, and bootstrap capacitor requirements for high-duty-cycle operation.
Technical Context
The MP1470BGJ-P employs peak-current-mode control with a fixed 500kHz oscillator and internal 0.8V reference, enabling fast transient response and simplified compensation. Its proprietary switching loss reduction technique improves efficiency across load conditions while maintaining forced PWM operation even at light loads.
Functional block integration includes an internal 5V regulator powered from VIN, cycle-by-cycle over-current detection with hiccup recovery, thermal shutdown at 150°C (with 20°C hysteresis), and a floating high-side gate driver supplied via the BST pin using an external 1µF capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.7V to 16V - supports wide industrial and consumer supply rails including 5V, 12V, and 15V systems. |
| Output Current | 2A continuous - sufficient for powering SoCs, FPGAs, and display logic without external current boosting. |
| Switching Frequency | 500kHz ±10% - balances EMI performance and inductor size; enables use of compact 4.7µH inductors. |
| Feedback Reference | 0.8V ±2.5% - sets output voltage via external resistor divider; allows precise regulation from 0.8V to near VIN. |
| HS/LS RDS(on) | 163mΩ / 86mΩ - reduces conduction losses and thermal stress under full 2A load at 12V input. |
| Soft-Start Time | 1ms - prevents output overshoot and inrush current during power-up into pre-biased loads. |
| Thermal Shutdown | 150°C activation - protects die integrity; automatic recovery at ~130°C ensures robust fault handling. |
Pinout & Package
MP1470BGJ-P is housed in a thermally enhanced 6-pin TSOT23 package (JEDEC MO-193 AB), with exposed pad for improved heat dissipation. Pin 1 is located at the lower-left corner when viewing the top marking left-to-right.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power and signal ground reference | Primary return path for output current and feedback network; requires low-impedance PCB connection to minimize noise coupling. |
| 2 SW | Switch node | Drives external inductor; carries high di/dt pulses; must be routed with minimal loop area to reduce EMI. |
| 3 IN | Main input supply | Accepts 4.7V–16V rail; requires local 22µF ceramic decoupling capacitor placed adjacent to pin. |
| 4 FB | Feedback input | Senses output voltage via resistor divider; internal 0.8V reference enables accurate VOUT programming. |
| 5 EN | Enable control | Digital on/off control; internal 1MΩ pull-down allows floating-disable; clamped at 6.5V for safe interfacing. |
| 6 BST | Bootstrap supply | Provides floating gate drive for high-side MOSFET; requires 1µF ceramic capacitor between BST and SW. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 163mΩ HS + 86mΩ LS MOSFETs eliminate external switch selection and layout complexity. |
| Fixed-Frequency PWM | 500kHz operation enables predictable EMI filtering and consistent inductor sizing across designs. |
| Hiccup-Mode Protection | Enters periodic restart upon sustained over-current or short-circuit, limiting average power dissipation and thermal stress. |
| Pre-Bias Start-Up | Supports monotonic ramp-up into pre-charged outputs-critical for hot-swap and multi-rail sequencing applications. |
| Internal Compensation | Optimized compensation network minimizes external components; simplifies loop stability verification. |
Applications
| Game Consoles | Digital Set-Top Boxes |
|---|---|
Use Scenario: Powering GPU core voltage rails and memory interfaces in handheld and home console platforms. IC Role / Device Role / Timing Role: Primary buck regulator supplying stable 1.2V/1.8V/3.3V domains with fast load-step response to dynamic processing demands. Use Value: Internal MOSFETs and 500kHz switching enable compact, low-noise power delivery without discrete driver complexity. | Use Scenario: Generating clean 3.3V and 5V supplies for demodulator ICs, tuners, and HDMI interface circuitry. IC Role / Device Role / Timing Role: Main system PMIC stage converting 12V adapter input to regulated low-voltage logic rails. Use Value: 2A capability and hiccup-mode protection ensure reliable operation during burst-mode video decoding and channel switching transients. |
| Flat-Panel Television | Industrial Human-Machine Interfaces |
Use Scenario: Supplying backlight LED drivers and TCON (timing controller) logic in LCD/LED TV mainboards. IC Role / Device Role / Timing Role: Secondary buck converter delivering tightly regulated 1.8V/2.5V for timing-critical display processing units. Use Value: Fixed-frequency PWM and internal soft-start prevent display flicker or initialization glitches during cold start. | Use Scenario: Providing isolated 3.3V power for ARM-based HMI controllers operating in variable ambient temperatures. IC Role / Device Role / Timing Role: Compact, thermally robust point-of-load regulator supporting extended temperature range (-40°C to +125°C). Use Value: Thermal shutdown with 20°C hysteresis and TSOT23-6 package enable reliable long-term operation in enclosed enclosures. |
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 |
|---|---|---|---|
| MP2332C | Higher 3A rating, 2.5V–18V input, 650kHz fSW, smaller 2mm × 2mm QFN | Designed for newer designs requiring higher current density and lower thermal resistance | Select MP2332C for new designs needing >2A or improved thermal performance; MP1470BGJ-P remains viable for legacy 2A systems with TSOT23 footprint constraints |
| TPS562201 | 2A, 4.5V–17V, 580kHz, integrated compensation, no BST pin required | Lacks bootstrap architecture-simpler layout but limited to lower duty cycles (<85%) | Choose TPS562201 where input-to-output ratio stays below 3:1 and board space permits QFN-6; MP1470BGJ-P preferred for 12V→3.3V (D≈28%) or 12V→1.2V (D≈10%) with proven BST reliability |
Compared with MP2332C and TPS562201, MP1470BGJ-P offers proven TSOT23-6 integration for space-constrained 2A applications, retains design continuity for existing layouts, and delivers predictable hiccup-mode behavior under fault conditions-making it suitable for cost-sensitive, volume-manufactured consumer electronics where footprint compatibility outweighs next-gen feature upgrades.
Availability
MP1470BGJ-P is available at Aetrix Electronics and suitable for digital set-top boxes, flat-panel television mainboards, and industrial human-machine interfaces requiring stable component supply and long-lifecycle support.
Supply support for MP1470BGJ-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 across Asia and North America.
The MP1470B product line targets compact, high-efficiency DC/DC conversion for consumer and industrial applications where small footprint, internal MOSFET integration, and robust protection features are essential.
FAQ
What is the recommended BST capacitor value and type for MP1470BGJ-P?
A 1µF X5R or X7R ceramic capacitor rated for ≥10V is specified in the datasheet and validated across temperature and lifetime. It must be placed directly between BST and SW pins with minimal trace length to maintain gate drive integrity and prevent bootstrap voltage droop during high-duty-cycle operation.
Does MP1470BGJ-P support adjustable switching frequency?
No-the MP1470BGJ-P operates at a fixed 500kHz switching frequency with ±10% tolerance. Frequency adjustment is not supported; external RT resistor or SYNC pin functionality is absent. Designers must select inductor and output capacitor values based on this fixed frequency.
Can MP1470BGJ-P start up into a pre-biased output?
Yes-it features monotonic pre-bias start-up. When the output is already charged, the internal soft-start voltage ramps only after the BST voltage exceeds its rising threshold, preventing reverse current flow and ensuring controlled, glitch-free turn-on without damaging downstream circuitry.
What is the minimum output voltage achievable with MP1470BGJ-P?
The device supports output voltages as low as 0.8V, set by the internal reference voltage. Lower outputs are not supported due to the fixed 0.8V feedback threshold; attempting sub-0.8V regulation results in loss of regulation and uncontrolled duty cycle.
Is an external bootstrap diode required for MP1470BGJ-P?
An external bootstrap diode (e.g., IN4148) is optional and recommended only when VOUT ≥ 3.3V and duty cycle exceeds 65% (e.g., 12V→3.3V). It improves high-side gate drive efficiency by reducing BST capacitor discharge; omission is acceptable for most 3.3V/5V applications with standard layout practices.
How does over-current protection behave during sustained short-circuit conditions?
Upon detecting inductor current exceeding ~3.35A (typical), the device enters hiccup mode: it shuts down for ~20ms, attempts restart, and repeats until the fault clears. This limits average power dissipation to <1W, preventing thermal runaway while maintaining detectability for system-level fault logging.
What is the maximum recommended PCB copper area for the exposed pad on TSOT23-6?
The datasheet recommends a 2.0mm × 2.0mm thermal pad connected to a solid GND plane via ≥4 thermal vias (0.3mm diameter). Exceeding this area yields diminishing thermal returns; undersizing increases junction-to-ambient θJA beyond the rated 100°C/W and risks premature thermal shutdown at full load.
MP1470BGJ-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:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.7V
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 14.4V
- Current - Output:
- 2A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MP1470BGJ-P FAQ
1.How can I place an order for MP1470BGJ-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1470BGJ-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 MP1470BGJ-P reliable?
The price and inventory of MP1470BGJ-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1470BGJ-P is usually 5 days.
3.What payment methods are accepted for MP1470BGJ-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1470BGJ-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1470BGJ-P?
MP1470BGJ-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1470BGJ-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 MP1470BGJ-P?
For technical support, including MP1470BGJ-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1470BGJ-P requirements.
6.How does Aetrix verify that MP1470BGJ-P is sourced from the original manufacturer or authorized distributors?
All MP1470BGJ-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 MP1470BGJ-P meets industry standards.
7.What is the process for return or replacement of MP1470BGJ-P?
All MP1470BGJ-P units undergo pre-shipment inspection (PSI). If there is an issue with MP1470BGJ-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 MP1470BGJ-P part is unused and in its original packaging.
Return procedure for MP1470BGJ-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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