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onsemi NCP1406SNT1
- Part No.:
- NCP1406SNT1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP1406SNT1.pdf
- Description:
- IC REG BOOST ADJ 25MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,887
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Product details
Overview
NCP1406SNT1 from onsemi is a monolithic PFM-controlled step-up DC-DC converter with integrated 0.8 A/26 V NMOS switch, designed for low-input-voltage portable biasing applications. It operates from 1.4 V to 5.5 V input, delivers up to 25 V output at 25 mA, achieves 87% efficiency at 5 VIN/25 VOUT/25 mA, and features chip enable (CE) control and thermal shutdown. It is used in OLED panel biasing and white LED backlight drivers.
For engineers reviewing the NCP1406SNT1 datasheet, pinout, applications, or equivalent options, key selection considerations include its PFM constant-peak-current control architecture, TSOP-5 package footprint, 1.8 V typical startup voltage, 15 µA non-switching operating current, and compatibility with inductor-based boost, inverter, and buck configurations.
Technical Context
The NCP1406SNT1 uses Pulse Frequency Modulation with constant peak inductor current limiting (0.8 A typical) and operates inherently in Discontinuous Conduction Mode (DCM). Its internal 26 V-rated NMOS switch connects to the LX pin and enables output voltages up to 25 V without external high-voltage components.
Regulation is achieved via a 1.19 V ±1% bandgap reference compared against FB pin voltage; output voltage is set by an external resistor divider. The device includes soft-start (3–8 ms), undervoltage lockout (1.0–1.3 V), and thermal shutdown (140 °C with 10 °C hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.4 V to 5.5 V - supports single Li-ion or dual alkaline/NiMH cells. |
| Output Voltage Range | Adjustable up to 25 V - set via external FB resistor divider; enables OLED and multi-LED biasing. |
| Switch Current Limit | 0.8 A typical - prevents inductor saturation and limits peak stress during startup and overload. |
| Efficiency | 87% at 5 VIN/25 VOUT/25 mA - high light-load efficiency due to PFM control and low quiescent current. |
| Startup Voltage | 1.8 V typical (no load) - allows operation down to near-dead battery states in portable systems. |
| Operating Current | 15 µA (non-switching) - minimizes standby power draw when enabled but idle. |
| Shutdown Current | 0.3 µA - ultra-low leakage when CE pin < 0.3 V, extending battery life in standby. |
| Switching Frequency | Up to 1 MHz - enables compact external magnetics and fast transient response. |
Pinout & Package
Package: TSOP-5 (SOT-23-5 compatible), Pb-free, 5-pin surface-mount package with 1.3 mm × 2.9 mm footprint and 0.95 mm height (Case 483).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CE | Chip Enable control input | Logic-high ≥0.9 V enables switching; ≤0.3 V disables IC and reduces supply current to 0.3 µA. |
| 2 - FB | Feedback voltage sensing node | Connects to resistor divider; regulates output by comparing to 1.19 V internal reference. |
| 3 - VDD | Power supply input | Accepts 1.4–5.5 V; includes UVLO (1.0–1.3 V) and powers internal circuitry. |
| 4 - GND | Analog and power ground | Common return for feedback, control logic, and power switch source; must be low-impedance. |
| 5 - LX | Switch node connection | Drain of internal 0.7 Ω NMOS switch; connects externally to inductor and Schottky diode anode. |
Key Features
| Feature | Design Value |
|---|---|
| PFM constant-peak-current control | Maintains >80% efficiency across 0.1–25 mA load range without requiring loop compensation. |
| Integrated 0.8 A / 26 V NMOS switch | Eliminates need for external high-voltage switch; supports 25 V output from ≤5.5 V input. |
| Soft-start (3–8 ms) | Gradually increases duty cycle to limit inrush current and minimize output overshoot at startup. |
| Thermal shutdown with hysteresis | Shuts down at 140 °C junction temperature; resumes at 130 °C - prevents permanent damage under overload. |
| Low-noise DCM operation | Operates in discontinuous conduction mode by default - avoids subharmonic oscillation and EMI spikes. |
| Configurable topology support | Can be wired as boost, inverter, or buck converter using same IC - reduces BOM count in multi-rail designs. |
Applications
| OLED Display Bias Supply | White LED Backlight Driver |
|---|---|
|
Use Scenario: Powering small-to-large passive-matrix or active-matrix OLED panels requiring stable 15–25 V bias rails. IC Role / Device Role / Timing Role: Step-up converter generating regulated high-voltage rail from single-cell battery input. Use Value: Delivers 25 V at 25 mA with 87% efficiency and soft-start to prevent display flicker during power-on. |
Use Scenario: Driving 3–8 white LEDs in series for LCD backlight in portable media players and PDAs. IC Role / Device Role / Timing Role: Constant-current-capable boost controller where CE pin accepts PWM dimming signals. Use Value: Enables analog + PWM brightness control with <0.3 µA shutdown current, extending battery runtime. |
| Portable Device Power Management | Low-Voltage Battery-Powered Instrumentation |
|
Use Scenario: Providing auxiliary high-voltage rails in cell phones, digital cameras, and handheld gaming devices. IC Role / Device Role / Timing Role: Primary boost converter supplying gate drive or sensor bias from depleting battery sources. Use Value: Starts reliably at 1.8 V and maintains regulation down to 1.4 V input - maximizes usable battery capacity. |
Use Scenario: Generating precision bias voltages for op-amps, ADC references, or MEMS sensors in battery-operated test gear. IC Role / Device Role / Timing Role: Low-noise, low-quiescent-power DC-DC source with tight output voltage tolerance (±1%). Use Value: Achieves 15 µA operating current when idle and 0.3 µA in shutdown - critical for multi-year battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ETA+ | Higher 500 mA switch current; fixed 5 V output or adjustable up to 5.25 V; no CE pin; 1.8 V min input. | Limited to ≤5.25 V output - unsuitable for 25 V OLED bias; better for low-voltage logic rail generation. | Select only if output ≤5.25 V and higher current is required; not drop-in for NCP1406SNT1's 25 V capability. |
| TPS61099YFFR | PFM-only, 30 V switch rating, 400 mA current limit, 0.7 µA shutdown current, 0.65 V min input. | Supports lower input (0.65 V) and higher output (30 V); lacks thermal shutdown and has different FB reference (0.6 V). | Prefer for ultra-low-input or higher-output applications; verify thermal protection and feedback network redesign. |
Compared with MAX17222ETA+ and TPS61099YFFR, the NCP1406SNT1 uniquely balances 25 V output capability, 1.4 V minimum input, integrated CE control, and thermal protection in a TSOP-5 package - making it optimal for space-constrained OLED and LED biasing where voltage headroom and reliability are critical.
Availability
NCP1406SNT1 is available at Aetrix Electronics and suitable for OLED display biasing, white LED backlighting, and portable instrumentation requiring stable component supply with long-term manufacturability and automotive-grade variants (NCV1406).
Supply support for NCP1406SNT1 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
onsemi (Nasdaq: ON) is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP1406SNT1 belongs to onsemi's portable DC-DC converter product line, engineered specifically for low-input-voltage, high-step-up biasing in battery-powered displays and lighting - emphasizing efficiency, small size, and robust protection.
FAQ
What is the minimum input voltage required to start up the NCP1406SNT1?
The NCP1406SNT1 has a typical startup voltage of 1.8 V at no load, with a guaranteed minimum of 1.7 V and maximum of 2.0 V across temperature. This allows reliable operation from nearly depleted alkaline or NiMH cells, and supports single Li-ion batteries down to end-of-discharge voltage. Startup behavior is load-dependent and improves with lower output voltage settings.
Can the NCP1406SNT1 be used in inverting or buck configurations?
Yes, the NCP1406SNT1 can be configured as an inverter or step-down converter per onsemi application notes. Its internal NMOS switch and PFM control architecture allow flexible topologies beyond standard boost - though stability and efficiency must be validated per configuration. The TSOP-5 pinout and internal current-sense structure support these alternate uses without external switch additions.
What is the purpose of the CE pin on the NCP1406SNT1, and how should it be driven?
The CE pin on the NCP1406SNT1 enables or disables switching: ≥0.9 V enables normal operation; ≤0.3 V forces shutdown with 0.3 µA supply current. It features an internal 150 nA pull-up to VDD, so floating CE enables the device. For PWM dimming of white LEDs, CE accepts logic-level signals up to 6 V, allowing direct microcontroller interface without level-shifting.
Does the NCP1406SNT1 include overtemperature protection?
Yes, the NCP1406SNT1 integrates thermal shutdown that activates at 140 °C junction temperature and releases at 130 °C (10 °C hysteresis). This protects the IC during sustained overload or poor PCB thermal design. The shutdown is system-wide - halting switching, disabling LX output, and reducing supply current - and resumes autonomously once temperature falls below the release threshold.
What is the recommended inductor value range for the NCP1406SNT1 in boost mode?
onsemi specifies a recommended inductor range of 1 µH to 47 µH for the NCP1406SNT1 in boost applications. Common values are 8.2 µH (e.g., Sumida CR43-8R2MC) for 15–25 V outputs and 10 µH (e.g., Sumida CMD4D11-100MC) for improved efficiency at higher loads. Inductor saturation current must exceed 0.8 A, and DCR should be minimized to preserve efficiency.
NCP1406SNT1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Up
- Output Configuration:
- Positive
- Topology:
- Boost
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 1.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.19V
- Voltage - Output (Max):
- 25V
- Current - Output:
- 25mA
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP1406SNT1 FAQ
1.How can I place an order for NCP1406SNT1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1406SNT1 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 NCP1406SNT1 reliable?
The price and inventory of NCP1406SNT1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1406SNT1 is usually 5 days.
3.What payment methods are accepted for NCP1406SNT1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1406SNT1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1406SNT1?
NCP1406SNT1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1406SNT1 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 NCP1406SNT1?
For technical support, including NCP1406SNT1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1406SNT1 requirements.
6.How does Aetrix verify that NCP1406SNT1 is sourced from the original manufacturer or authorized distributors?
All NCP1406SNT1 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 NCP1406SNT1 meets industry standards.
7.What is the process for return or replacement of NCP1406SNT1?
All NCP1406SNT1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP1406SNT1, 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 NCP1406SNT1 part is unused and in its original packaging.
Return procedure for NCP1406SNT1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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