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Monolithic Power Systems Inc. MP1470BGJ-Z
- Part No.:
- MP1470BGJ-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP1470BGJ-Z.pdf
- Description:
- IC REG BUCK ADJ 2A TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,817
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Product details
Overview
MP1470BGJ-Z 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, fixed 500kHz switching frequency, and adjustable 0.8V–VIN×DMAX output voltage - deployed in game consoles and flat-panel display power rails.
For engineers reviewing the MP1470BGJ-Z datasheet, MP1470BGJ-Z pinout, MP1470BGJ-Z application, or MP1470BGJ-Z equivalent, key selection criteria include internal MOSFET RDS(on), thermal shutdown threshold (150°C), hiccup-mode over-current protection, and TSOT23-6 layout constraints for high-efficiency 2A buck conversion.
Technical Context
The MP1470BGJ-Z employs peak-current-mode control with a fixed 500kHz oscillator and internal soft-start (1ms ramp), enabling fast transient response and stable loop compensation without external components. Its proprietary switching loss reduction technique improves efficiency across load conditions.
It integrates a 5V internal regulator, 0.8V reference error amplifier, and bootstrap driver with UVLO (2.2V rising) for high-side gate drive. Protection includes cycle-by-cycle over-current limit (3.0–3.7A), thermal shutdown (150°C), and hiccup mode triggered when FB falls below 140mV during short-circuit faults.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.7V to 16V - supports wide industrial and consumer input rails including 5V, 12V, and 15V systems. |
| Output Current | 2A continuous - sufficient for powering SoCs, FPGAs, and display logic in compact devices. |
| Switching Frequency | Fixed 500kHz (400–580kHz typical) - enables small external inductors (e.g., 4.7µH) and predictable EMI filtering. |
| Feedback Reference | 0.8V ±24mV - sets precise output voltage via resistor divider; supports 0.8V–14.7V output range. |
| HS/LS RDS(on) | 163mΩ / 86mΩ - reduces conduction loss and thermal stress at full 2A load, improving full-load efficiency. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects die during sustained overload or poor PCB thermal design. |
| Enable Threshold | 1.4–1.6V rising, 1.23–1.41V falling - provides clean digital control with built-in 1MΩ pull-down for default-off operation. |
Pinout & Package
MP1470BGJ-Z is housed in a thermally enhanced 6-pin TSOT23 package (JEDEC MO-193 AB), with exposed pad for improved heat dissipation and footprint optimized for space-constrained PCBs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Power and signal ground reference | Mandatory low-impedance connection to system ground plane; serves as return path for output current and feedback reference. |
| 2 SW | Switch node | Drives external inductor; requires wide copper trace and tight layout to minimize ringing and EMI. |
| 3 IN | Main input supply | Accepts 4.7–16V; must be decoupled with ≥22µF ceramic capacitor placed adjacent to pin. |
| 4 FB | Output voltage feedback | Connects to resistor divider tap; senses regulated output and compares to 0.8V internal reference. |
| 5 EN | Enable control input | Digital on/off control; internal 1MΩ pull-down ensures safe default-off state; clamped at 6.5V Zener. |
| 6 BST | Bootstrap supply for high-side driver | Requires 1µF capacitor between BST and SW to generate floating gate drive voltage for HS MOSFET. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectification | Eliminates external Schottky diode, reducing conduction loss and improving efficiency by ~5–8% at 2A vs. asynchronous designs. |
| Internal soft-start (1ms) | Prevents output overshoot and inrush current during power-up, critical for pre-biased loads in hot-swap applications. |
| Hiccup-mode OCP | Reduces average short-circuit current and die temperature during sustained faults, enabling safe recovery without manual reset. |
| Proprietary switching loss reduction | Optimizes gate drive timing and overlap control to minimize shoot-through and switching transition losses at 500kHz. |
| Current-mode control | Provides inherent line/load regulation and simplifies loop compensation - no external Type-II/III network required for stability. |
Applications
| Game Console Power Rails | Digital Set-Top Box Core Supply |
|---|---|
|
Use Scenario: Powers ARM-based application processors and DDR memory interfaces in handheld and home console platforms. IC Role / Device Role / Timing Role: Primary 3.3V/2A or 1.2V/2A point-of-load regulator with forced PWM for consistent ripple performance under dynamic load. Use Value: Compact TSOT23-6 footprint and integrated MOSFETs eliminate discrete power stage layout complexity and reduce BOM count by 4+ components. |
Use Scenario: Supplies 2.5V/2A to MPEG decoder SoCs and video processing units in cable/satellite STBs. IC Role / Device Role / Timing Role: Fixed-frequency synchronous buck converter providing stable core voltage with <±1% load regulation across 0–2A. Use Value: 0.8V reference and tight FB tolerance (±3%) enable accurate output setting without trimming; hiccup mode prevents thermal runaway during firmware crash-induced shorts. |
| Flat-Panel Display Logic Supply | General-Purpose Industrial DC/DC |
|
Use Scenario: Generates 1.8V/2A for timing controllers (TCON) and interface ICs in LCD/OLED monitor mainboards. IC Role / Device Role / Timing Role: High-efficiency step-down regulator operating from 12V rail with minimal thermal rise (<25°C at 2A, 25°C ambient). Use Value: 163mΩ/86mΩ RDS(on) MOSFETs and 500kHz operation allow use of low-profile 4.7µH inductors and 22µF input ceramics - ideal for ultra-thin bezel designs. |
Use Scenario: Provides 5V/2A auxiliary power for sensors, communication modules, and MCU peripherals in factory automation nodes. IC Role / Device Role / Timing Role: Robust buck converter with UVLO (4.2V rising), thermal shutdown, and EN-controlled sequencing for reliable field deployment. Use Value: Wide 4.7–16V input range accommodates unregulated 12V supplies with ±10% tolerance; internal compensation eliminates tuning effort for standard 4.7µH/22µF designs. |
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 | Successor device: 2.5A rating, 20V max input, lower RDS(on) (120mΩ/70mΩ), 650kHz fSW, improved light-load efficiency. | Designed for new designs requiring higher current headroom or extended input range; not pin-compatible due to different pinout and BST configuration. | Select MP2332C for new projects needing >2A capability or 18V surge tolerance; MP1470BGJ-Z remains valid for legacy 2A designs with existing TSOT23-6 layout. |
| TPS562201 | Texas Instruments part: 2A, 17V input, 580kHz, 110mΩ/70mΩ MOSFETs, integrated compensation, but requires external BST diode. | Offers tighter VFB accuracy (±1%) and programmable soft-start; lacks hiccup-mode OCP and has higher quiescent current (120µA vs. 1µA shutdown). | Choose TPS562201 where precision output regulation and design flexibility outweigh layout simplicity; MP1470BGJ-Z preferred when minimizing external components and board area is critical. |
Compared with MP2332C and TPS562201, MP1470BGJ-Z delivers optimal balance of integration (no external BST diode), thermal robustness (150°C shutdown), and minimal BOM count for cost-sensitive 2A applications - though MP2332C supersedes it for new designs per MPS documentation.
Availability
MP1470BGJ-Z is available at Aetrix Electronics and suitable for game consoles, digital set-top boxes, and flat-panel television power subsystems requiring stable component supply and long-term industrial availability.
Supply support for MP1470BGJ-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, headquartered in Kirkland, WA, with global design and support operations.
The MP1470B product line targets compact, high-efficiency DC/DC conversion for consumer electronics, emphasizing integration, thermal resilience, and minimal external component count in sub-3mm² packages.
FAQ
What is the maximum recommended output current for continuous operation?
The MP1470BGJ-Z is rated for 2A continuous output current under specified thermal conditions (TA ≤ +85°C, θJA = 100°C/W). At 2A and VIN = 12V, junction temperature remains below 125°C with proper PCB copper area; derating is required above 85°C ambient or with inadequate heatsinking.
Does MP1470BGJ-Z support pre-biased output startup?
Yes - the MP1470BGJ-Z implements monotonic pre-bias start-up. When the output is pre-charged, the internal soft-start voltage ramps only after BST voltage exceeds its rising threshold (2.2V), preventing reverse current flow and ensuring controlled voltage ramp without output collapse.
Can the switching frequency be adjusted externally?
No - the MP1470BGJ-Z uses an internal fixed-frequency oscillator set to 500kHz (typical), with ±18% variation over process/temperature. Frequency foldback occurs only during fault conditions (e.g., FB < 140mV), not as a user-controllable feature.
What is the purpose of the BST pin, and what capacitor value is required?
The BST pin supplies the floating gate drive voltage for the internal high-side MOSFET. A 1µF ceramic capacitor must be placed between BST and SW pins; this capacitor is charged through the internal bootstrap diode during low-side conduction and sustains gate voltage during high-side on-time.
Is MP1470BGJ-Z RoHS-compliant and lead-free?
Yes - MP1470BGJ-Z is fully RoHS-compliant, lead-free, and halogen-free per MPS green status documentation. It meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) and is qualified for reflow soldering per IPC/JEDEC J-STD-020 standards.
How does the hiccup-mode over-current protection operate?
When FB drops below 140mV (indicating severe overload or short circuit), the MP1470BGJ-Z disables switching and enters hiccup mode: it waits ~30ms, attempts restart, and repeats if the fault persists. This limits average power dissipation to <1W, preventing thermal damage while enabling automatic recovery.
What is the minimum input voltage before UVLO disables operation?
The MP1470BGJ-Z features an under-voltage lockout with a rising threshold of 3.85–4.55V (typical 4.2V) and hysteresis of 340mV. Operation ceases when VIN falls below ~3.86V and resumes only after VIN rises above ~4.2V, preventing erratic behavior near dropout.
MP1470BGJ-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:
- 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-Z FAQ
1.How can I place an order for MP1470BGJ-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1470BGJ-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 MP1470BGJ-Z reliable?
The price and inventory of MP1470BGJ-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1470BGJ-Z is usually 5 days.
3.What payment methods are accepted for MP1470BGJ-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1470BGJ-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1470BGJ-Z?
MP1470BGJ-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1470BGJ-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 MP1470BGJ-Z?
For technical support, including MP1470BGJ-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1470BGJ-Z requirements.
6.How does Aetrix verify that MP1470BGJ-Z is sourced from the original manufacturer or authorized distributors?
All MP1470BGJ-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 MP1470BGJ-Z meets industry standards.
7.What is the process for return or replacement of MP1470BGJ-Z?
All MP1470BGJ-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP1470BGJ-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 MP1470BGJ-Z part is unused and in its original packaging.
Return procedure for MP1470BGJ-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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