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Monolithic Power Systems Inc. MP9361DJ-LF-Z
- Part No.:
- MP9361DJ-LF-Z
- Manufacturer:
- Monolithic Power Systems Inc.
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MP9361DJ-LF-Z.pdf
- Description:
- IC REG CHARGE PUMP 5V TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,195
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Product details
Overview
MP9361DJ-LF-Z from Monolithic Power Systems is a regulated 2× charge pump DC/DC converter delivering a fixed 5V ±200mV output at up to 110mA, operating from 2.8V–5V input with no inductor required. It integrates soft-start, over-current and short-circuit protection, and uses a TSOT23-6 package for space-constrained LED backlight and camera flash power rails.
For engineers reviewing the MP9361DJ-LF-Z datasheet, MP9361DJ-LF-Z pinout, MP9361DJ-LF-Z application, or MP9361DJ-LF-Z equivalent, this device is selected for compact, low-noise 5V bias generation where inductor-free operation, precise ripple control (≤30mV), and fast enable/disable sequencing are critical in portable display and imaging subsystems.
Technical Context
The MP9361DJ-LF-Z implements a fixed-frequency (1.35MHz) switched-capacitor doubler architecture with internal voltage divider feedback and comparator-based regulation. Output voltage is stabilized via closed-loop sensing of the charge-pump output through an on-die resistor network.
It features integrated MOSFET drivers, thermal shutdown (~145°C), and logic-controlled EN pin with 1.5V high-threshold and 0.4V low-threshold. The CP/CN terminals support external flying capacitor switching, while OUT requires ≥2.2µF ceramic decoupling for loads ≤60mA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 5.0V ±200mV; enables direct replacement of LDOs in 5V rail applications without external feedback. |
| Max Output Current | 110mA continuous; supports white LED strings requiring stable current drive up to 60mA per channel. |
| Input Range | 2.8V to 5.0V; compatible with single-cell Li-ion (3.0–4.2V) and USB-powered systems. |
| Switching Frequency | 1.35MHz (typ); allows use of small 0.22µF flying capacitor and minimizes EMI in RF-sensitive zones. |
| Output Ripple | ≤30mV peak-to-peak at 60mA load; meets noise requirements for analog sensor bias and camera image signal chain. |
| Enable Threshold | VEN(HI) = 1.5V, VEN(LO) = 0.4V; interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
| Quiescent Current | 2–4mA; maintains low standby power during display sleep modes in handheld devices. |
Pinout & Package
MP9361DJ-LF-Z is housed in a lead-free, RoHS-compliant TSOT23-6 package (1.6mm × 2.9mm × 0.85mm), optimized for high-density PCB layouts and reflow compatibility.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (OUT) | Regulated output node | Delivers 5V to load; requires ≥2.2µF ceramic capacitor (10µF if IOUT > 60mA) for stability and ripple suppression. |
| 2 (GND) | Power ground reference | Low-impedance return path for charge pump switching currents; must be connected to solid ground plane. |
| 3 (EN) | Logic-enable control input | Active-high digital enable; drives internal gate drivers only when VEN ≥ 1.5V; draws <1µA leakage at 5V. |
| 4 (CN) | Flying capacitor negative terminal | Connects to negative side of 0.22µF flying capacitor; forms half of charge-transfer path in 2× doubler stage. |
| 5 (IN) | Input supply connection | Accepts 2.8–5.0V source; requires local 2.2µF ceramic bypass capacitor placed near pin. |
| 6 (CP) | Flying capacitor positive terminal | Connects to positive side of 0.22µF flying capacitor; alternately charges/discharges with CN to generate boosted voltage. |
Key Features
| Feature | Design Value |
|---|---|
| No-inductor topology | Eliminates magnetic components, reducing board area by >40% vs. buck converters and avoiding EMI from inductive switching. |
| Internal soft-start | Controls inrush current during startup and mode transitions, preventing input rail droop in battery-powered systems. |
| Over-current protection | Trips at 250–500mA (typ), latching off until reset by cycling EN or VIN, protecting against sustained overload. |
| Short-circuit protection | Limits output current to 60–90mA during hard short, enabling safe fault recovery without thermal runaway. |
| Thermal shutdown | Disables switching when junction temperature exceeds ~145°C; resumes operation after cooldown to ~135°C hysteresis. |
Applications
| Smartphone LED Backlight | Camera Flash Driver |
|---|---|
Use Scenario: Driving parallel white LEDs in smartphone front-facing displays requiring uniform brightness and minimal flicker. IC Role / Device Role / Timing Role: Regulated 5V bias generator supplying constant-current LED driver ICs (e.g., AL8860). Use Value: Delivers low-noise 5V with ≤30mV ripple, ensuring stable LED current and eliminating visible PWM artifacts in ambient light. | Use Scenario: Powering high-brightness white LED flash modules in mobile camera subsystems with burst-mode operation. IC Role / Device Role / Timing Role: Compact, fast-response 5V charge pump enabling rapid flash activation (<10ms) from single-cell Li-ion input. Use Value: 110mA output capability supports multi-LED flash arrays; soft-start prevents battery sag during flash trigger events. |
| LCD Display Bias Supply | TV Remote Control Power |
Use Scenario: Generating 5V VCOM or gate driver supply for small-format TFT-LCD panels in portable instrumentation. IC Role / Device Role / Timing Role: Fixed-output charge pump replacing discrete boost circuits in space-limited LCD module designs. Use Value: TSOT23-6 footprint fits within 3mm × 3mm area; 1.35MHz switching avoids audible noise in display timing-critical environments. | Use Scenario: Providing regulated 5V rail for IR LED drivers and microcontroller peripherals in ultra-low-power TV remote controls. IC Role / Device Role / Timing Role: Low-quiescent (2–4mA) 5V regulator enabling extended shelf life on coin-cell or alkaline batteries. Use Value: Shutdown current <1µA extends battery life beyond 12 months; EN pin allows MCU-controlled power gating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar regulated charge pump applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS60403DBVR | Fixed 5V output, 60mA max, 1MHz switching, SOT23-5 package | Lower output current and no EN pin; suited for low-power logic bias only | Select when 60mA suffices and board space permits SOT23-5 footprint |
| MAX680ESA+ | Adjustable output (±5V dual), 20mA per rail, SO8 package | Dual-rail capability but lower current and larger footprint; lacks OCP/SCP | Choose only if bipolar supply needed and thermal margin allows SO8 placement |
Compared with TPS60403DBVR and MAX680ESA+, MP9361DJ-LF-Z delivers 83% higher output current in a smaller 6-pin TSOT23 package, includes full protection suite (OCP, SCP, thermal), and supports direct GPIO enable-making it optimal for modern LED-intensive portable systems.
Availability
MP9361DJ-LF-Z is available at Aetrix Electronics and suitable for smartphone LED backlight, camera flash driver, and LCD display bias supply applications requiring stable component supply, consistent parametric performance, and long-term manufacturability.
Supply support for MP9361DJ-LF-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, with design centers across Asia and North America.
The MP9361 belongs to MPS's regulated charge pump product line, engineered specifically for compact, inductorless 5V bias generation in portable imaging and display subsystems where size, noise, and reliability are critical.
FAQ
What flying capacitor value is required for MP9361DJ-LF-Z?
A 0.22µF X7R ceramic capacitor rated ≥6.3V must be used between CP and CN pins. This value ensures stable 2× charge pump operation at 1.35MHz and meets ripple and efficiency targets across the full input range.
Can MP9361DJ-LF-Z operate below 2.8V input?
No. Absolute minimum input is 2.8V per datasheet specifications. Operation below this voltage risks regulation loss, reduced output current, and potential instability due to insufficient headroom for internal circuitry and charge transfer.
Is the 5V output adjustable using external resistors?
No. MP9361DJ-LF-Z provides only a factory-trimmed fixed 5V output. There is no feedback pin or external resistor network option; output voltage cannot be modified without substituting a different part number.
How does the EN pin behave during power-up?
The EN pin must be held low (<0.4V) until input voltage stabilizes above 2.8V. Premature high assertion may cause erratic start-up or excessive inrush; internal soft-start activates only after valid EN high and sufficient VIN.
What is the maximum allowable output capacitance?
No upper limit is specified, but total output capacitance (including decoupling) should not exceed 100µF to avoid violating soft-start timing and causing prolonged startup or oscillation during load transients.
Does MP9361DJ-LF-Z support PWM dimming control?
It does not integrate PWM dimming. However, its EN pin supports external PWM (up to 2kHz) for coarse LED brightness control by rapidly enabling/disabling the output, as verified in typical application waveforms.
What thermal derating applies above 25°C ambient?
Maximum power dissipation decreases linearly by 0.05W per 10°C rise above 25°C ambient, based on θJA = 195°C/W. At 65°C ambient, PDmax drops to 0.44W, limiting usable output current under high-temperature conditions.
MP9361DJ-LF-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:
- Active
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Charge Pump
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.8V
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 110mA
- Frequency - Switching:
- 1.35MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- TSOT-23-6
MP9361DJ-LF-Z FAQ
1.How can I place an order for MP9361DJ-LF-Z through Aetrix?
Please submit a Request for Quotation (RFQ) for MP9361DJ-LF-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 MP9361DJ-LF-Z reliable?
The price and inventory of MP9361DJ-LF-Z are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MP9361DJ-LF-Z is usually 5 days.
3.What payment methods are accepted for MP9361DJ-LF-Z?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MP9361DJ-LF-Z transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MP9361DJ-LF-Z?
MP9361DJ-LF-Z orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MP9361DJ-LF-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 MP9361DJ-LF-Z?
For technical support, including MP9361DJ-LF-Z datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MP9361DJ-LF-Z requirements.
6.How does Aetrix verify that MP9361DJ-LF-Z is sourced from the original manufacturer or authorized distributors?
All MP9361DJ-LF-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 MP9361DJ-LF-Z meets industry standards.
7.What is the process for return or replacement of MP9361DJ-LF-Z?
All MP9361DJ-LF-Z units undergo pre-shipment inspection (PSI). If there is an issue with MP9361DJ-LF-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 MP9361DJ-LF-Z part is unused and in its original packaging.
Return procedure for MP9361DJ-LF-Z:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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