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onsemi NCP1400ASN30T1
- Part No.:
- NCP1400ASN30T1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP1400ASN30T1.pdf
- Description:
- IC REG BOOST 3V 100MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,574
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Product details
Overview
NCP1400ASN30T1 from onsemi is a fixed-frequency PWM step-up micropower DC-DC switching regulator optimized for single- or dual-cell battery-powered portable devices. It delivers 3.0 V regulated output at up to 100 mA, starts up from 0.8 V input, operates down to 0.2 V, and integrates oscillator, PWM controller, error amplifier, soft-start, and power MOSFET in TSOP-5 package.
For engineers reviewing the NCP1400ASN30T1 datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world operating specifications, validated pin functions, confirmed alternatives, and supply-chain support for low-voltage boost converter design in space-constrained, battery-sensitive systems.
Technical Context
The NCP1400ASN30T1 implements voltage-mode PWM control with a fixed 180 kHz oscillator (±20% tolerance, 0.11%/°C tempco) and operates exclusively in discontinuous conduction mode (DCM) for stable regulation across wide input ranges. Its internal phase-compensated error amplifier eliminates need for external compensation components.
Startup and hold behavior is defined by dedicated thresholds: minimum startup voltage is 0.8 V (typ), dropping to 0.3 V minimum hold voltage at zero load; both exhibit negative temperature coefficients (−1.6 mV/°C for Vstart). The LX pin supports peak sink current of 100 mA (typ) with 0.65–1.0 V voltage limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.0 V ±2.5% - factory-trimmed internal feedback network enables precise, stable rail without external resistors. |
| Switching Frequency | 180 kHz (typ), 144–216 kHz (min–max) - fixed-frequency operation simplifies EMI filtering and enables predictable ripple behavior. |
| Startup Input Voltage | 0.8 V (typ), ≤0.95 V (max) - enables operation from nearly-dead alkaline or NiMH cells, critical for ultra-low-power wake-up circuits. |
| Max Output Current | 100 mA (typ at VIN = 1.2 V, VOUT = 3.0 V) - sufficient to drive white LEDs, small displays, or RF front-ends in handheld instruments. |
| Quiescent Current | 37 µA (typ, IDD1 at VOUT = 3.0 V) - ensures minimal battery drain during standby while maintaining fast wake-up response. |
| Enable Threshold | VCE(HIGH) ≥ 0.9 V enables regulation; VCE(LOW) ≤ 0.3 V disables IC - compatible with standard logic outputs and open-drain microcontrollers. |
| Operating Temp Range | −40°C to +85°C ambient - validated for consumer and industrial portable equipment environments. |
Pinout & Package
Package: TSOP-5 (Case 483), Pb-free, surface-mount, 3.0 × 1.5 mm footprint with 0.95 mm pitch. Thermal resistance RJA = 250°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CE | Chip Enable input | Logic-controlled shutdown: ≥0.9 V enables regulation; ≤0.3 V disables IC; floating state defaults to enabled via internal 150 nA pull-up to OUT. |
| 2 - OUT | Regulated output & supply pin | Provides 3.0 V output and powers internal circuitry; must be decoupled with ≥10 µF low-ESR capacitor near pin. |
| 3 - NC | No internal connection | Unbonded pad - must remain unconnected; no routing or soldering required. |
| 4 - GND | Ground reference | Common return for input, output, and internal circuitry; requires low-impedance one-point grounding per layout guidelines. |
| 5 - LX | Power switch drain node | Connects to inductor and Schottky diode anode; handles pulsed 100 mA peak current; voltage clamped to ≤1.0 V during overcurrent events. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low startup voltage | 0.8 V enables boost operation from deeply discharged batteries - extends usable battery life in pagers and remote controls. |
| Integrated soft-start | 2.0 ms (typ) controlled ramp prevents inrush current and stabilizes output during cold start - avoids brown-out in downstream logic. |
| Discontinuous mode stability | On-chip phase compensation guarantees stable regulation across full input (0.2–3.0 V) and load (0–100 mA) range - no external compensation needed. |
| Low-noise fixed-frequency PWM | 180 kHz switching minimizes audible noise and simplifies EMI filter design - suitable for audio-sensitive applications like digital cameras. |
| Chip enable with hysteresis | 0.6 V input threshold window (0.3–0.9 V) prevents undefined states - eliminates need for external level-shifting or debouncing circuits. |
Applications
| White LED Backlighting | Portable Audio Power Supply |
|---|---|
Use Scenario: Driving 3–5 white LEDs (3.0–3.4 V forward) from a single 1.2–1.5 V NiMH cell in compact digital cameras. IC Role / Device Role / Timing Role: Step-up regulator providing stable 3.0 V rail with <15 mV ripple at 20 mA load. Use Value: Enables consistent LED brightness across full battery discharge curve without requiring higher-cell-count packs. |
Use Scenario: Powering analog audio codec and headphone amplifier in Bluetooth earbuds with 1.5 V lithium coin cell. IC Role / Device Role / Timing Role: Low-noise 3.0 V supply delivering 40 mA with <20 µA quiescent current in sleep mode. Use Value: Extends playback time by >30% versus linear regulators while meeting THD+N <0.01% requirements. |
| Handheld Test Instrument | Low-Power Wireless Sensor Node |
Use Scenario: Generating 3.0 V for microcontroller, LCD, and precision ADC in pocket-sized multimeters powered by two AAA alkaline cells. IC Role / Device Role / Timing Role: Micropower boost converter operating down to 0.2 V per cell to extract final 15% battery energy. Use Value: Increases instrument runtime from 8 to >10 hours and eliminates premature "low-battery" warnings. |
Use Scenario: Supplying 3.0 V to sub-GHz transceiver and MCU in battery-operated environmental sensor nodes deployed for 5+ years. IC Role / Device Role / Timing Role: Always-on boost stage with 37 µA operating current and 0.6 µA shutdown current (via CE pin). Use Value: Enables 7-year field life on CR2032 coin cell by minimizing quiescent loss during 99.9% sleep duty cycle. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1703ESA+ | 2.5 V to 5.5 V input range; 3.3 V fixed output; 600 kHz switching; requires external compensation. | Better suited for higher-input-voltage systems (e.g., Li-ion); less effective below 0.9 V input. | Select when input voltage remains >1.0 V and higher efficiency at medium loads is prioritized over ultra-low-VIN capability. |
| TPS61022DSQR | 0.3 V startup; 3.3 V output; 2.5 MHz switching; integrated diode; 1.2 A output capability. | Higher cost and larger solution size; over-specified for 100 mA applications; better for high-current, space-tolerant designs. | Choose only if system requires >300 mA output or integration of power diode is mandatory for BOM reduction. |
Compared with MAX1703ESA+ and TPS61022DSQR, the NCP1400ASN30T1 uniquely balances ultra-low startup voltage (0.8 V), minimal external component count (4 total), and TSOP-5 footprint - making it optimal for cost-sensitive, space-constrained, single-cell battery applications where deep discharge utilization is essential.
Availability
NCP1400ASN30T1 is available at Aetrix Electronics and suitable for portable instrumentation, wireless sensor nodes, LED lighting, and battery-powered consumer electronics requiring stable component supply with guaranteed long-term manufacturability.
Supply support for NCP1400ASN30T1 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 (formerly ON Semiconductor) is a global semiconductor supplier focused on energy-efficient innovation for automotive, industrial, cloud, and intelligent edge applications.
The NCP1400A series was designed specifically for micropower, low-input-voltage boost conversion in portable battery-powered equipment - emphasizing startup reliability, minimal external components, and robust DCM operation.
FAQ
What is the minimum input voltage required for NCP1400ASN30T1 to start regulating?
The NCP1400ASN30T1 has a typical minimum startup voltage of 0.8 V and a maximum of 0.95 V at 25°C. This allows reliable startup from nearly depleted single-cell alkaline or NiMH batteries. Startup voltage increases slightly at lower temperatures due to its −1.6 mV/°C coefficient, so designs for −40°C operation should verify margin with worst-case Vstart ≈ 0.95 V.
Can NCP1400ASN30T1 operate with input voltages below 0.8 V?
Yes - the NCP1400ASN30T1 can sustain regulation down to 0.2 V input (Vhold = 0.3 V typ) once started, enabling extraction of residual energy from exhausted batteries. However, it cannot initiate regulation below ~0.8 V; auxiliary wake-up circuitry or capacitor charging may be needed for true zero-volt restart scenarios.
What external components are required for basic NCP1400ASN30T1 operation?
Only four external components are required: a 22 µH inductor (L1), a Schottky diode (e.g., MBR0520LT1), a 10 µF input capacitor (C1), and a 68 µF output capacitor (C2). No feedback resistors or compensation networks are needed - the 3.0 V output is set internally and trimmed to ±2.5% accuracy.
How does the CE pin function on NCP1400ASN30T1, and what happens if left unconnected?
The CE pin enables or disables the NCP1400ASN30T1: ≥0.9 V enables regulation; ≤0.3 V disables it. If left floating, an internal 150 nA pull-up current source ties CE to the OUT pin, resulting in automatic enablement. Applying 0.3–0.9 V places the IC in an undefined state and must be avoided.
Is NCP1400ASN30T1 compatible with ceramic output capacitors?
Yes - the NCP1400ASN30T1 is stable with low-ESR ceramic capacitors. While the datasheet recommends 47–68 µF tantalum for optimal ripple suppression, 68 µF X5R/X7R ceramics (with ESR < 30 mΩ) have been validated in evaluation boards. Ensure capacitor voltage rating exceeds 3.0 V by ≥50% (e.g., 6.3 V rated) to accommodate transient overshoot.
NCP1400ASN30T1 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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 0.8V
- Voltage - Input (Max):
- 3V
- Voltage - Output (Min/Fixed):
- 3V
- Voltage - Output (Max):
- -
- Current - Output:
- 100mA (Switch)
- Frequency - Switching:
- 180kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP1400ASN30T1 FAQ
1.How can I place an order for NCP1400ASN30T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1400ASN30T1 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 NCP1400ASN30T1 reliable?
The price and inventory of NCP1400ASN30T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1400ASN30T1 is usually 5 days.
3.What payment methods are accepted for NCP1400ASN30T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1400ASN30T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1400ASN30T1?
NCP1400ASN30T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1400ASN30T1 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 NCP1400ASN30T1?
For technical support, including NCP1400ASN30T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1400ASN30T1 requirements.
6.How does Aetrix verify that NCP1400ASN30T1 is sourced from the original manufacturer or authorized distributors?
All NCP1400ASN30T1 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 NCP1400ASN30T1 meets industry standards.
7.What is the process for return or replacement of NCP1400ASN30T1?
All NCP1400ASN30T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP1400ASN30T1, 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 NCP1400ASN30T1 part is unused and in its original packaging.
Return procedure for NCP1400ASN30T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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