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onsemi NCV1406SNT1G
- Part No.:
- NCV1406SNT1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCV1406SNT1G.pdf
- Description:
- IC REG BOOST ADJ 25MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,108
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Product details
Overview
NCV1406SNT1G from onsemi is an automotive-grade, monolithic PFM boost converter IC with integrated 0.8 A/26 V NMOS switch, designed for high-efficiency voltage step-up from 1.4 V to 5.5 V input up to 25 V output at 25 mA - used in OLED biasing, white LED backlighting, and LCD panel supplies.
For engineers reviewing the NCV1406SNT1G datasheet, pinout, applications, or equivalent options, this page delivers verified technical context, real-world design meaning of key specs, TSOP-5 package layout, automotive-qualified features, and two validated alternative parts for bias supply designs requiring AEC-Q100 compliance and low-quiescent-current operation.
Technical Context
The NCV1406SNT1G operates in discontinuous conduction mode (DCM) using pulse frequency modulation with constant peak current control (0.8 A typical limit), enabling stable regulation across wide load ranges without external compensation. Its internal 1.19 V ±1% bandgap reference feeds a PFM comparator whose feedback pin (FB) sets output voltage via resistor divider.
Startup occurs at 1.8 V (typical), with undervoltage lockout at 1.0–1.3 V and thermal shutdown at 140°C (10°C hysteresis). The CE pin supports enable/disable control with 0.9 V enable threshold and 0.3 V disable threshold, reducing quiescent current to 0.3 µA in shutdown.
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 battery operation without external LDO pre-regulation. |
| Output Voltage Range | Adjustable up to 25 V - enables direct biasing of large OLED panels and series-connected white LEDs. |
| Switch Current Limit | 0.8 A (typical) - prevents inductor saturation and limits peak stress on internal NMOS during startup or overload. |
| Efficiency | 87% at 25 V/25 mA/5 V input - achieves high light-load efficiency critical for portable display power management. |
| Quiescent Current | 15 µA (not switching) - extends battery life in always-on display bias applications with minimal standby drain. |
| Shutdown Current | 0.3 µA - reduces system-level leakage when display is off or in deep sleep mode. |
| Operating Junction Temp | −40°C to +105°C - meets AEC-Q100 Grade 2 requirements for under-hood and instrument cluster use. |
Pinout & Package
NCV1406SNT1G is housed in a Pb-free TSOP-5 (SC-59-5) surface-mount package (Case 483), measuring 2.9 mm × 1.6 mm × 1.1 mm, optimized for space-constrained portable and automotive display modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CE | Chip Enable control input | Logic-high ≥0.9 V enables switching; ≤0.3 V disables device and drops supply current to 0.3 µA. |
| 2 - FB | Feedback voltage sensing node | Connects to resistor divider from VOUT; regulates output by comparing to 1.19 V internal reference. |
| 3 - VDD | Power supply input | Accepts 1.4–5.5 V input; includes UVLO (1.0–1.3 V) and powers internal logic, gate driver, and bandgap. |
| 4 - GND | Analog and power ground | Common return for feedback, enable, and LX switch; must be low-impedance to minimize noise coupling. |
| 5 - LX | Switch node connection | Drain of internal 0.8 A/26 V NMOS; connects externally to inductor and Schottky diode anode. |
Key Features
| Feature | Design Value |
|---|---|
| PFM with constant peak current control | Maintains >80% efficiency from 1 mA to 25 mA load - eliminates need for external compensation in DCM operation. |
| Integrated 0.8 A/26 V NMOS switch | Enables compact 25 V boost designs with no external MOSFET - reduces BOM count and PCB area in display bias rails. |
| Soft-start circuit (3–8 ms) | Prevents output overshoot and inrush current during power-up - protects OLED panels and downstream capacitors. |
| Thermal shutdown (140°C) + hysteresis | Auto-recovery at 130°C prevents latch-up during transient overloads - ensures robustness in sealed automotive enclosures. |
| AEC-Q100 qualified (Grade 2) | Validated for −40°C to +105°C operation with PPAP capability - suitable for instrument clusters and center displays. |
Applications
| OLED Panel Bias Supply | White LED Backlight Driver |
|---|---|
Use Scenario: Powering 3–5 inch AMOLED displays in automotive infotainment units requiring stable 18–22 V bias rails. IC Role / Device Role / Timing Role: Primary step-up regulator generating regulated high-voltage bias from 3.3 V or 5 V system rail. Use Value: Delivers 25 mA at 22 V with 87% efficiency and <10 mV ripple - avoids display flicker and extends panel lifetime. |
Use Scenario: Driving 6–10 white LEDs in series for center console backlighting in vehicles with 12 V battery input. IC Role / Device Role / Timing Role: Constant-voltage boost controller with CE-pin PWM dimming interface. Use Value: Enables analog+PWM brightness control via CE pin while maintaining <1% output voltage drift across temperature. |
| LCD Segment Bias Generator | Portable Medical Display Power |
Use Scenario: Generating ±15 V dual-rail bias for segmented LCDs in automotive HVAC controls and digital dashboards. IC Role / Device Role / Timing Role: Configured as inverting topology to produce negative output from positive input. Use Value: Achieves ±15 V at 10 mA per rail using single inductor and dual diodes - eliminates need for transformer-based solutions. |
Use Scenario: Providing 25 V bias for high-resolution diagnostic display modules in handheld ultrasound and patient monitors. IC Role / Device Role / Timing Role: Primary DC-DC converter powering display driver ICs from single-cell Li-ion battery. Use Value: Operates down to 1.8 V startup and draws only 15 µA quiescent current - maximizes runtime between charges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar boost converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX17222ETA+T | Higher 30 V output rating, 1.2 MHz fixed-frequency PWM, lower 2.5 µA quiescent current, but no CE pin and no AEC-Q100 qualification. | Suitable for non-automotive portable devices where size and ultra-low IQ dominate over automotive reliability. | Select MAX17222ETA+T only if AEC-Q100 is not required and higher switching frequency improves EMI filtering. |
| TPS61040DRVR | Fixed 28 V output, 500 kHz PWM, 1.2 µA shutdown current, but lacks adjustable feedback and thermal shutdown hysteresis. | Better for cost-sensitive consumer displays where fixed output and minimal external components are prioritized. | Choose TPS61040DRVR when output voltage is fixed and automotive qualification is unnecessary. |
Compared with NCV1406SNT1G, MAX17222ETA+T offers superior IQ and frequency but lacks automotive qualification and enable control, while TPS61040DRVR simplifies design with fixed output yet sacrifices adjustability and thermal safety margins required in automotive environments.
Availability
NCV1406SNT1G is available at Aetrix Electronics and suitable for automotive instrument clusters, portable medical displays, and industrial HMI panels requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for NCV1406SNT1G 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 is a global semiconductor supplier delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, and IoT applications.
The NCV1406SNT1G belongs to onsemi's automotive-qualified DC-DC converter product line, engineered specifically for display biasing in harsh-temperature, high-reliability vehicle subsystems.
FAQ
What is the minimum input voltage required for NCV1406SNT1G to start switching?
The NCV1406SNT1G has a typical startup voltage of 1.8 V at no load, with a maximum specification of 2.0 V across temperature. This allows reliable operation from partially discharged single-cell Li-ion batteries or two-cell alkaline sources. Below 1.8 V, the device remains in UVLO state and will not initiate switching, even if CE is asserted. The NCV1406SNT1G maintains regulation down to 1.4 V once started, but cannot initiate from below 1.8 V.
Does NCV1406SNT1G support PWM dimming for white LED applications?
Yes, the CE pin of the NCV1406SNT1G supports direct PWM dimming: applying a square wave with logic-high ≥0.9 V and logic-low ≤0.3 V modulates output conduction time, enabling precise brightness control without color shift. The device retains soft-start behavior on each enable cycle, preventing LED inrush. NCV1406SNT1G's 0.3 µA shutdown current ensures minimal power loss during off-cycles, making it ideal for automotive LED backlighting.
What is the maximum output current achievable with NCV1406SNT1G at 25 V output?
At 25 V output, the NCV1406SNT1G delivers up to 25 mA continuously under typical conditions (VIN = 5 V, TA = 25°C), as confirmed by Figure 3 and Figure 7 in the datasheet. Efficiency remains ≥87% at this point. Higher currents cause thermal derating: at TA = 85°C, maximum continuous output drops to ~18 mA due to 180 mW power dissipation limit in TSOP-5 package. Exceeding 25 mA risks thermal shutdown or reduced reliability.
Is NCV1406SNT1G pin-compatible with NCP1406SNT1G?
Yes, NCV1406SNT1G and NCP1406SNT1G share identical pinout, package (TSOP-5), electrical specifications, and functional behavior. The only difference is automotive qualification: NCV1406SNT1G is AEC-Q100 Grade 2 qualified (−40°C to +105°C), while NCP1406SNT1G is rated for −40°C to +85°C. Both parts use the same marking code (AET), layout, and external component values - allowing drop-in replacement in automotive designs requiring extended temperature range.
What external components are mandatory for basic NCV1406SNT1G operation?
Four external components are mandatory: (1) input capacitor (≥4.7 µF ceramic, placed near VDD), (2) output capacitor (≥3.3 µF ceramic, low-ESR), (3) power inductor (8.2 µH typical, rated ≥0.8 A saturation current), and (4) Schottky diode (e.g., MBR0530T1, 30 V, <0.3 V VF). The feedback resistor divider (R1/R2) is required to set output voltage; omitting it disables regulation. No bootstrap capacitor or external MOSFET is needed - all power switching is integrated in the NCV1406SNT1G.
NCV1406SNT1G 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 ~ 105°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCV1406SNT1G FAQ
1.How can I place an order for NCV1406SNT1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCV1406SNT1G 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 NCV1406SNT1G reliable?
The price and inventory of NCV1406SNT1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCV1406SNT1G is usually 5 days.
3.What payment methods are accepted for NCV1406SNT1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCV1406SNT1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCV1406SNT1G?
NCV1406SNT1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCV1406SNT1G 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 NCV1406SNT1G?
For technical support, including NCV1406SNT1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCV1406SNT1G requirements.
6.How does Aetrix verify that NCV1406SNT1G is sourced from the original manufacturer or authorized distributors?
All NCV1406SNT1G 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 NCV1406SNT1G meets industry standards.
7.What is the process for return or replacement of NCV1406SNT1G?
All NCV1406SNT1G units undergo pre-shipment inspection (PSI). If there is an issue with NCV1406SNT1G, 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 NCV1406SNT1G part is unused and in its original packaging.
Return procedure for NCV1406SNT1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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