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Monolithic Power Systems Inc. MP1541GG-Z
- Part No.:
- MP1541GG-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- 8-TFDFN Exposed Pad
- Datasheet:
-
MP1541GG-Z.pdf
- Description:
- IC REG BOOST ADJ 300MA 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,530
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Product details
Overview
MP1541GG-Z from Monolithic Power Systems is a current-mode, fixed-frequency 1.3MHz boost converter IC with integrated 0.65Ω MOSFET switch, 1.25V feedback reference, and internal soft-start. It operates from 2.5V–6V input to deliver up to 12V/300mA from 5V, featuring UVLO (2.45V), thermal shutdown (160°C), and current limit (1.9A). Used in camera flash and small LCD backlighting.
For engineers reviewing the MP1541GG-Z datasheet, MP1541GG-Z pinout, MP1541GG-Z application, or MP1541GG-Z equivalent, key selection criteria include its QFN-8 (2mm×2mm) package, 1.3MHz switching frequency for compact magnetics, 1.25V FB accuracy (±0.04V), and verified operation down to 2.5V input-critical for single-cell Li-ion and 3.3V rail boosting.
Technical Context
The MP1541GG-Z implements peak-current-mode control with a fixed 1.3MHz oscillator and internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its error amplifier compares the 1.25V bandgap reference against the FB node voltage to regulate output via PWM duty adjustment.
It integrates a 0.65Ω RDS(on) N-channel MOSFET switch, supports up to 22V output, and features a dedicated EN pin with 1.3V turn-on threshold and 100mV hysteresis-enabling precise power sequencing in battery-powered systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 1.3 MHz ±0.3 MHz - enables use of ≤2mm-height inductors and ceramic capacitors for space-constrained portable designs. |
| Feedback Voltage | 1.25 V ±0.04 V - sets output voltage via external resistor divider; tolerance directly impacts output regulation accuracy. |
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (2.7–4.2V), 3.3V logic rails, and regulated 5V sources without pre-regulation. |
| Output Current Capability | 300 mA at 12V from 5V input - validated under thermal limits in QFN-8 package with θJA = 80°C/W. |
| Current Limit Threshold | 1.9 A typical - protects internal MOSFET during startup, short-circuit, or overload; ensures stable current-mode loop operation. |
| Soft-Start Duration | 120 µs - ramps current limit in three 40µs steps to limit inrush and minimize output overshoot during power-up. |
| Thermal Shutdown | 160 °C junction temperature - latches off until die cools; prevents permanent damage during sustained overload or poor PCB thermal design. |
Pinout & Package
The MP1541GG-Z is housed in 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; the package supports reflow soldering per JEDEC MO-229 VCCD-3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | SW | Drain of internal N-MOSFET; swings from GND to up to 22V; connects to inductor and output rectifier. |
| 2 | IN | Main input supply pin; requires local 4.7µF ceramic bypass capacitor placed adjacent to minimize high-frequency noise. |
| 3 | EN | Active-high enable input; 1.3V threshold with 100mV hysteresis; must not be left floating-tie to VIN if always-on. |
| 4 | GND | Power ground reference; connects to exposed thermal pad for optimal heat dissipation and low-noise return path. |
| 5 | FB | Feedback input; senses divided output voltage; 1.25V reference target; sensitive to noise-keep trace short and away from SW node. |
| 6,7 | N/C | No-connect pins reserved for factory testing; must remain unconnected in application circuitry. |
| 8 | GND | Second ground terminal; electrically tied to Pin 4 internally; improves thermal conduction and reduces ground impedance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Switch | 0.65Ω RDS(on) N-MOSFET eliminates external switch and gate driver, reducing BOM count and layout complexity. |
| Fixed 1.3MHz Operation | Enables use of 4.7µH–10µH inductors ≤2mm height and 4.7µF–10µF ceramic output caps-ideal for ultra-thin mobile modules. |
| Internal Soft-Start | 120µs controlled current ramp prevents input voltage sag and output overshoot during cold start from battery sources. |
| Thermal & Overcurrent Protection | 160°C thermal shutdown and 1.9A current limit provide robust fault handling without external sensing components. |
| UVLO with Hysteresis | 2.45V turn-on with 92mV hysteresis ensures clean startup and prevents oscillation near brown-out thresholds. |
Applications
| Camera Phone Flash | Digital Still Camera Backlight |
|---|---|
Use Scenario: Driving white LEDs for high-intensity flash pulses in smartphone rear cameras. IC Role / Device Role / Timing Role: Boost controller generating 12V from 3.3V/4.2V battery to drive parallel LED strings with precise current control via external sense resistor. Use Value: 1.3MHz switching minimizes EMI interference with image sensor clocking; soft-start avoids flash-trigger timing jitter caused by output overshoot. | Use Scenario: Powering 3–5 white LEDs in compact digital cameras requiring uniform brightness and minimal board area. IC Role / Device Role / Timing Role: Fixed-frequency boost regulator delivering regulated 12V to LED driver IC or constant-current sink stage. Use Value: QFN-8 footprint and 2mm-height inductor compatibility enable <8mm² total solution size; 1.25V FB accuracy maintains consistent LED luminance across temperature. |
| Handheld PDA Display | External Modem Power Supply |
Use Scenario: Providing 12V bias for small active-matrix LCD panels in legacy PDAs and industrial handheld terminals. IC Role / Device Role / Timing Role: Primary DC-DC boost stage converting 3.3V system rail to display panel VCOM or gate driver supply. Use Value: UVLO hysteresis prevents display flicker during battery voltage sag; thermal shutdown protects against prolonged high-brightness operation in sealed enclosures. | Use Scenario: Generating 12V from USB 5V or 3.3V logic rail to power RS-232 transceivers or analog front-end circuitry in external modems. IC Role / Device Role / Timing Role: Isolated boost source decoupled from host system rail, enabling independent power management and hot-plug resilience. Use Value: 6V max input rating allows direct connection to 5V USB VBUS; EN pin enables modem sleep/wake coordination without host MCU intervention. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61040DRVR | 500kHz switching, 0.5A switch current, 28V max output, SOT-23-6 package | Larger inductor required; lower frequency increases EMI risk near RF bands; better suited for higher-output-voltage (>15V) applications | Select when >15V output or lower quiescent current (25µA) is prioritized over size and EMI performance. |
| RT8532GJ6F | 1.2MHz switching, 2A current limit, 24V max output, WDFN-6L 2×2 package | Higher current capability but no integrated soft-start; requires external compensation network for stability | Choose for higher load current headroom (up to 400mA) where board space permits additional compensation components. |
Compared with TPS61040DRVR and RT8532GJ6F, the MP1541GG-Z offers superior integration (internal soft-start, compensation), smaller QFN-8 footprint, and tighter FB voltage tolerance-making it optimal for space-constrained, battery-powered imaging and display subsystems demanding fast transient response and low EMI.
Availability
MP1541GG-Z is available at Aetrix Electronics and suitable for camera flash drivers, small LCD displays, handheld computing peripherals, and external modem power supplies requiring stable component supply and full lifecycle support.
Supply support for MP1541GG-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 mixed-signal ICs for power management, motion control, and automotive applications.
The MP1541 belongs to MPS's low-power DC-DC boost converter product line, designed specifically for space- and efficiency-critical portable electronics such as smartphones, wearables, and imaging modules.
FAQ
What is the maximum output voltage supported by the MP1541GG-Z?
The MP1541GG-Z supports output voltages up to 22V, as confirmed by absolute maximum ratings (SW pin rated to 25V) and operating conditions (VOUT = 3V to 22V). This allows flexible configuration for white LED strings, LCD bias rails, and RS-232 level-shifting circuits without external voltage clamping.
Does the MP1541GG-Z require external compensation components?
No-the MP1541GG-Z is internally compensated and does not require external compensation components for stable operation. Its control loop uses an integrated error amplifier with built-in poles and a zero optimized for standard output capacitor and load combinations, simplifying design for typical 12V/300mA applications.
Can the MP1541GG-Z operate from a single-cell Li-ion battery?
Yes-the MP1541GG-Z operates from 2.5V minimum input, covering the full discharge range of a single-cell Li-ion battery (2.7V–4.2V). Its UVLO threshold of 2.45V with 92mV hysteresis ensures reliable startup and shutdown behavior without oscillation during battery voltage decay.
What is the thermal performance difference between TSOT23-5 and QFN-8 packages?
The QFN-8 (2mm×2mm) package has θJA = 80°C/W versus 220°C/W for TSOT23-5, enabling ~3.3× higher power dissipation at the same ambient temperature. This allows the MP1541GG-Z to sustain 300mA at 12V output continuously on standard 4-layer PCBs, whereas TSOT23-5 is limited to lower loads or forced-air cooling.
Is the EN pin compatible with 1.8V logic microcontrollers?
No-the EN pin has a 1.3V typical turn-on threshold with 100mV hysteresis, making it incompatible with 1.8V logic without level shifting. Direct connection to a 1.8V GPIO may result in unreliable enable/disable behavior; a simple resistive divider or buffer is recommended for interfacing with sub-2.5V logic families.
What diode is recommended for use with the MP1541GG-Z in a 12V/300mA application?
For 12V/300mA operation, the MBR0520 Schottky diode is recommended per the datasheet-offering low forward voltage (~0.3V), fast recovery, and sufficient 20V reverse rating. Its 500mA average current rating provides margin above the 300mA load, minimizing conduction loss and thermal stress.
MP1541GG-Z 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-Z FAQ
1.How can I place an order for MP1541GG-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP1541GG-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 MP1541GG-Z reliable?
The price and inventory of MP1541GG-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP1541GG-Z is usually 5 days.
3.What payment methods are accepted for MP1541GG-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP1541GG-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP1541GG-Z?
MP1541GG-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP1541GG-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 MP1541GG-Z?
For technical support, including MP1541GG-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP1541GG-Z requirements.
6.How does Aetrix verify that MP1541GG-Z is sourced from the original manufacturer or authorized distributors?
All MP1541GG-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 MP1541GG-Z meets industry standards.
7.What is the process for return or replacement of MP1541GG-Z?
All MP1541GG-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP1541GG-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 MP1541GG-Z part is unused and in its original packaging.
Return procedure for MP1541GG-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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