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Monolithic Power Systems Inc. MP1541GG-P
- Part No.:
- MP1541GG-P
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-TFDFN Exposed Pad
- Datasheet:
-
MP1541GG-P.pdf
- Description:
- IC REG BOOST ADJ 300MA 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,754
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Product details
Overview
MP1541GG-P from Monolithic Power Systems is a fixed-frequency current-mode boost converter IC with integrated 0.65Ω MOSFET, operating at 1.3MHz to enable compact 2mm-height magnetics and ceramic capacitors. It delivers up to 300mA at 12V from a 5V input, supports 2.5–6V input and 3–22V output ranges, and integrates soft-start, UVLO, thermal shutdown, and current limiting for battery-powered flash and display applications.
For engineers reviewing the MP1541GG-P datasheet, MP1541GG-P pinout, MP1541GG-P application, or MP1541GG-P equivalent, key selection criteria include its 1.25V feedback reference accuracy (±4%), 1.3MHz switching frequency tolerance (±23%), QFN-8 (2mm×2mm) thermal resistance (θJA = 80°C/W), and EN pin threshold hysteresis (100mV) - all critical for low-noise, space-constrained DC-DC designs.
Technical Context
The MP1541GG-P implements peak-current-mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier compares a 1.25V bandgap reference against the FB node, driving a PWM comparator whose output controls the integrated N-channel MOSFET switch.
It features a fourth-increment soft-start sequence over 120μs, stabilizes regulation via internal compensation (2-pole/1-zero network), and includes a right-half-plane zero mitigation strategy requiring crossover frequency ≤75kHz - all optimized for stable operation with minimal external components in portable power rails.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3 MHz ±23% - enables use of 2mm-height inductors and 4.7–10μF ceramic output caps without ESR dependency. |
| Feedback Voltage | 1.25 V ±4% - sets output voltage precision via resistor divider; determines regulation accuracy under load/temperature variation. |
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (3.0–4.2V), 3.3V logic rails, and dual-cell alkaline (2.5–3.2V) inputs. |
| Output Current Capability | 300 mA at 12V from 5V - defines maximum sustained load for camera flash or white LED bias without thermal derating. |
| MOSFET RDS(on) | 0.65 Ω - limits conduction loss at peak switch current; enables >85% efficiency at 300mA/12V output. |
| EN Pin Threshold | 1.3 V ±0.3 V rising - ensures reliable startup across temperature and supply variation; 100mV hysteresis prevents chatter. |
| Thermal Shutdown | 160 °C - protects die during overload or poor PCB heatsinking; recovery occurs after junction cools below ~145°C. |
Pinout & Package
MP1541GG-P uses a thermally enhanced QFN-8 package (2mm × 2mm, 0.8mm height) with exposed thermal pad. Pin 1 is marked by a dot or "GV" top marking; pins 6 and 7 are no-connect (NC) and reserved for factory use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (SW) | Power Switch Drain | Connects to inductor and rectifier cathode; swings from GND to up to 22V; carries peak currents up to 1.9A. |
| 2 (IN) | Input Supply | Bypassed locally with ≥4.7μF ceramic cap; supplies gate drive and internal circuitry; sensitive to layout-induced noise. |
| 3 (EN) | Enable Control | Active-high logic input; must not float; 1μA bias current allows direct connection to microcontroller GPIO. |
| 4 (GND) | Power Ground | Primary return path for SW current and internal circuits; tied to exposed thermal pad for thermal conduction. |
| 5 (FB) | Feedback Input | Senses output via resistive divider; 1.25V reference sets regulation point; −30nA bias current minimizes divider error. |
| 6,7 (NC) | No Connect | Reserved for factory test; must remain unconnected in application; no electrical function or thermal benefit. |
| 8 (GND) | Secondary Ground | Second ground terminal for improved current return path; connects internally to pin 4 and thermal pad. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power MOSFET | 0.65Ω RDS(on) eliminates external switch, reduces BOM count, and improves layout simplicity for 300mA loads. |
| 1.3MHz Fixed Frequency | Enables use of ultra-low-profile (≤2mm) inductors and small-case ceramic capacitors, reducing board area by >40% vs. 500kHz converters. |
| Internal Soft-Start | 120μs ramp-up with 25% current step increments limits inrush into output caps, preventing input rail collapse in battery systems. |
| 1.25V Precision Feedback | ±4% tolerance over −40°C to +85°C ensures stable output regulation across temperature without external trimming. |
| Full Protection Suite | UVLO (2.45V), thermal shutdown (160°C), and cycle-by-cycle current limit (1.9A) prevent damage during fault conditions. |
Applications
| Camera Phone Flash | Small LCD Backlight |
|---|---|
|
Use Scenario: Driving high-brightness white LEDs for smartphone camera flash bursts at 100mA peak current. IC Role / Device Role / Timing Role: Boost controller generating regulated 12V rail from 3.3V/4.2V battery to power LED string with precise current control. Use Value: Internal soft-start prevents battery voltage sag during flash activation; 1.3MHz switching avoids audible noise in compact form factor. |
Use Scenario: Powering 3–5 white LEDs in handheld PDA or digital camera LCD backlight at 20–30mA per string. IC Role / Device Role / Timing Role: Step-up regulator delivering stable 15–20V output from 3.3V system rail to maintain uniform LED brightness. Use Value: 1.25V FB reference accuracy ensures consistent luminance across temperature; QFN-8 package fits tight bezel space constraints. |
| Digital Still Camera Display | External Modem Power Rail |
|
Use Scenario: Supplying 12V bias to CCD/CMOS image sensor analog front-end and LCD driver IC in compact cameras. IC Role / Device Role / Timing Role: Primary DC-DC converter providing clean, low-noise 12V rail isolated from noisy digital subsystems. Use Value: High PSRR and 1.3MHz switching minimize conducted EMI into sensitive imaging circuitry; thermal shutdown protects during sensor self-test. |
Use Scenario: Generating 12V auxiliary rail for RS-232 transceivers or DSL line drivers in USB-powered modems. IC Role / Device Role / Timing Role: Standalone boost stage converting 5V USB power to higher-voltage interface rail with fast transient response. Use Value: 300mA output capability supports multiple transceiver channels; EN pin enables software-controlled power sequencing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | Fixed 600kHz switching, 0.5Ω RDS(on), 28V max output, no internal soft-start | Lower frequency requires larger inductors; better suited for higher-output-voltage (>15V) but lower-current (<200mA) apps | Select when higher output voltage range and lower quiescent current (55µA) outweigh size and noise requirements. |
| RT8532GSP | Adjustable 1.2–2.5MHz frequency, 0.45Ω RDS(on), 24V max output, external compensation | Requires external loop compensation components; offers frequency tuning to avoid EMI bands but increases design complexity | Select when EMI-sensitive environments require frequency dithering or when tighter output voltage tolerance (<±2%) is mandatory. |
Compared with TPS61040DRVR and RT8532GSP, MP1541GG-P provides optimal balance of size, efficiency, and integration for 300mA/12V portable boost applications - its fixed 1.3MHz frequency and internal soft-start eliminate tuning effort while maintaining thermal safety in QFN-8 footprint.
Availability
MP1541GG-P is available at Aetrix Electronics and suitable for camera flash modules, handheld computer power rails, and small LCD display backlights requiring stable component supply, RoHS-compliant packaging, and lifecycle continuity through 2028.
Supply support for MP1541GG-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, headquartered in Kirkland, WA, with global design and support centers.
The MP1541 belongs to MPS's low-power DC-DC converter product line, engineered specifically for space-constrained, battery-operated consumer electronics requiring high efficiency, minimal external components, and robust protection.
FAQ
What is the maximum output voltage supported by MP1541GG-P?
The MP1541GG-P supports output voltages up to 22V, as confirmed by absolute maximum ratings (SW pin rated to 25V) and recommended operating conditions (VOUT = 3V to 22V). This enables use in white LED strings, CCD bias supplies, and legacy interface rails requiring >12V.
Can MP1541GG-P operate from a single 3.7V Li-ion cell?
Yes - MP1541GG-P operates from 2.5V minimum input, covering the full discharge range of a single Li-ion cell (3.0V–4.2V). At 3.3V input, it delivers 12V/300mA with >83% typical efficiency, validated in Figure 1 of the datasheet.
Is an external Schottky diode required, and what is the recommended part?
Yes - MP1541GG-P requires an external Schottky rectifier. For ≤20V outputs and <500mA loads, the MBR0520 (20V, 0.5A) is recommended per the datasheet; for higher currents, Microsemi UPS5817 is specified due to lower forward voltage and faster recovery.
How does the EN pin behave during power-up and shutdown?
The EN pin has a 1.3V typical turn-on threshold with 100mV hysteresis, ensuring clean state transitions. When pulled high, the device initiates soft-start; when pulled low, it disables the switch and draws only 0.1–1µA shutdown current - verified in Electrical Characteristics Table.
What thermal performance can be expected in a standard 4-layer PCB layout?
In a JEDEC-standard 4-layer board (per datasheet Note 4), MP1541GG-P exhibits θJA = 80°C/W. At 300mA/12V output (≈1.2W dissipation), junction temperature rise is ~96°C above ambient - well within the 125°C max operating limit if ambient stays ≤29°C.
Does MP1541GG-P require external compensation components?
No - MP1541GG-P is internally compensated with a fixed 2-pole/1-zero network. Only a single external resistor (47kΩ–100kΩ) in series with FB is recommended for stability; no capacitor or additional resistors are required per the Compensation section (Page 8).
What is the purpose of pins 6 and 7 on the QFN-8 package?
Pins 6 and 7 are no-connect (NC) terminals reserved for factory testing. They have no electrical function, are not bonded internally, and must remain unconnected in all applications - explicitly stated in the PIN FUNCTIONS table (Page 6) and PACKAGE INFORMATION (Page 11).
MP1541GG-P Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Monolithic Power Systems Inc.
- Series:
- -
- Package/Case:
- 8-TFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- 22V
- Current - Output:
- 300mA
- Frequency - Switching:
- 1.3MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-QFN (2x2)
MP1541GG-P FAQ
1.How can I place an order for MP1541GG-P through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1541GG-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 MP1541GG-P reliable?
The price and inventory of MP1541GG-P are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1541GG-P is usually 5 days.
3.What payment methods are accepted for MP1541GG-P?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1541GG-P transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1541GG-P?
MP1541GG-P orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1541GG-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 MP1541GG-P?
For technical support, including MP1541GG-P datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1541GG-P requirements.
6.How does Aetrix verify that MP1541GG-P is sourced from the original manufacturer or authorized distributors?
All MP1541GG-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 MP1541GG-P meets industry standards.
7.What is the process for return or replacement of MP1541GG-P?
All MP1541GG-P units undergo pre-shipment inspection (PSI). If there is an issue with MP1541GG-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 MP1541GG-P part is unused and in its original packaging.
Return procedure for MP1541GG-P:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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