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onsemi NCP1400ASN22T1
- Part No.:
- NCP1400ASN22T1
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP1400ASN22T1.pdf
- Description:
- IC REG BOOST 2.2V 80MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,572
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Product details
Overview
NCP1400ASN22T1 from onsemi is a micropower fixed-frequency PWM step-up DC-DC switching regulator designed for low-voltage battery-powered portable electronics. It starts up at 0.8 V, operates down to 0.2 V, delivers up to 100 mA output current, and provides a regulated 2.2 V output with ±2.5% accuracy. It integrates oscillator, PWM controller, error amplifier, soft-start, chip enable, and power MOSFET in TSOP-5 package.
For engineers reviewing the NCP1400ASN22T1 datasheet, pinout, applications, or equivalent options, key selection criteria include startup voltage (0.8 V), output regulation tolerance (±2.5%), quiescent current (27 µA typ.), CE pin logic thresholds (0.9 V enable / 0.3 V disable), and discontinuous conduction mode stability.
Technical Context
The NCP1400ASN22T1 implements a voltage-mode PWM boost architecture operating at a fixed 180 kHz switching frequency (±20%) with phase-compensated internal error amplifier ensuring stable operation in discontinuous conduction mode. Its oscillator exhibits low temperature coefficient (0.11%/°C) and supports soft-start to limit inrush current during power-up.
It features cycle-by-cycle current limiting with ~350 mA peak switch current threshold, integrated VLX limiter (0.65–1.0 V), and an internal 150 nA CE pull-up enabling floating-pin operation. The device uses an internal feedback resistor network trimmed for 2.2 V output and requires only four external components: inductor, diode, input capacitor, and output capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.2 V ±2.5% - factory-trimmed internal feedback ensures stable regulation without external resistors. |
| Switching Frequency | 180 kHz ±20% - fixed-frequency PWM enables predictable EMI filtering and inductor sizing. |
| Startup Voltage | 0.8 V max - enables operation from single NiMH/alkaline cell even at deep discharge. |
| Max Output Current | 100 mA - sufficient for powering white LEDs, LCD bias, or low-power microcontrollers. |
| Quiescent Current | 27 µA typ. - minimizes battery drain in active mode; drops to 0.6 µA in shutdown. |
| CE Input Threshold | ≥0.9 V enable / ≤0.3 V disable - compatible with 1.8 V and 3.3 V logic; floating = enabled. |
| Operating Temp | −40°C to +85°C - qualified for industrial and consumer portable environments. |
Pinout & Package
Package: TSOP-5 (Case 483), 3.0 × 1.5 mm body, 0.95 mm pitch, Pb-free, RoHS compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CE | Chip Enable control input | Logic-high (≥0.9 V) enables regulator; logic-low (≤0.3 V) disables it; floating defaults to enabled via internal 150 nA pull-up to OUT. |
| 2 - OUT | Output voltage monitor & supply rail | Provides regulated 2.2 V output; also powers internal circuitry and serves as reference for CE pull-up. |
| 3 - NC | No internal connection | Not bonded; must be left unconnected; no electrical function or thermal path. |
| 4 - GND | Power and signal ground reference | Common return for input, output, and internal circuits; requires low-impedance one-point grounding per layout guidelines. |
| 5 - LX | Switch node connection | Drain of internal power MOSFET; connects externally to inductor and Schottky diode anode; handles pulsed high-current switching. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low startup voltage | 0.8 V enables reliable boot from single-cell batteries at end-of-life (e.g., 0.9 V alkaline). |
| Integrated soft-start | 2.0 ms typical ramp limits inrush current and prevents output overshoot during power-up. |
| Discontinuous mode stability | On-chip phase compensation eliminates need for external compensation components across full load range. |
| Low-noise fixed-frequency PWM | 180 kHz operation simplifies EMI filter design and avoids audible noise in audio-sensitive applications. |
| Chip enable with pull-up | Internal 150 nA CE-to-OUT pull-up allows simple on/off control using open-drain logic or mechanical switch. |
Applications
| White LED Backlighting | Portable Audio Power Supply |
|---|---|
Use Scenario: Driving 1–3 white LEDs (3.0–3.6 V forward) from a single 1.5 V alkaline or 1.2 V NiMH cell in compact handheld devices. IC Role / Device Role / Timing Role: Step-up regulator providing constant 2.2 V bias to LED driver IC or direct current source via current-limiting resistor. Use Value: Enables LED operation below 1.0 V input-extending usable battery life by >30% compared to linear solutions. | Use Scenario: Generating clean 2.2 V rail for low-noise op-amps, ADC references, or MEMS microphone bias in battery-powered voice recorders. IC Role / Device Role / Timing Role: Low-ripple, fixed-frequency boost converter supplying analog signal chain with minimal switching noise coupling. Use Value: 27 µA quiescent current and 180 kHz switching reduce battery load while enabling effective LC filtering to suppress ripple to <20 mV. |
| Handheld Instrument LCD Bias | Low-Power MCU Core Supply |
Use Scenario: Providing stable 2.2 V for segment LCD contrast control or VEE generation in multimeter or thermometer designs. IC Role / Device Role / Timing Role: Regulated voltage source delivering precise, low-noise bias independent of battery voltage decay. Use Value: ±2.5% output tolerance and <100 ppm/°C drift ensure consistent display contrast across −40°C to +85°C operating range. | Use Scenario: Powering 2.2 V–compatible ultra-low-power MCUs (e.g., certain MSP430 or PIC variants) from fading primary cells. IC Role / Device Role / Timing Role: Micropower DC-DC converter maintaining regulated core voltage during brown-out conditions. Use Value: 0.2 V hold voltage allows continued operation until battery reaches true depletion-maximizing runtime in sleep-active cycles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS6109922DSER | 2.2 V output, 1.8 V startup, 400 mA output, 1.2 MHz switching, WSON-6 package | Higher output current and frequency; requires smaller inductor but increases EMI sensitivity | Preferred when >100 mA load or space-constrained PCBs demand higher efficiency at light loads |
| MAX17222ATA+T | 2.2 V output, 0.7 V startup, 120 mA output, 1.2 MHz, 6-bump WLP package | Lower startup voltage and smaller footprint; lacks CE pin and has higher quiescent current (800 nA) | Selected for ultra-deep discharge battery systems where 0.7 V startup is critical and CE control is not required |
Compared with TPS6109922DSER and MAX17222ATA+T, the NCP1400ASN22T1 offers superior micropower performance (27 µA IQ) and proven stability in discontinuous mode with minimal external components-making it optimal for cost-sensitive, low-noise, long-battery-life applications where 100 mA output suffices.
Availability
NCP1400ASN22T1 is available at Aetrix Electronics and suitable for cellular telephones, digital cameras, handheld instruments, and white LED torch lights requiring stable component supply and extended battery runtime.
Supply support for NCP1400ASN22T1 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 delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP1400A series was developed specifically for micropower boost conversion in portable battery-powered equipment-emphasizing ultra-low startup voltage, minimal external component count, and robust discontinuous-mode operation.
FAQ
What is the minimum input voltage required for NCP1400ASN22T1 to start regulating?
The NCP1400ASN22T1 starts regulating at a maximum input voltage of 0.8 V under zero-load conditions. This specification is verified across temperature (−40°C to +85°C) and ensures reliable startup from nearly depleted single-cell batteries. The device continues operation down to 0.2 V, making it ideal for maximizing battery utilization in portable devices.
Does NCP1400ASN22T1 require external feedback resistors to set its 2.2 V output?
No, the NCP1400ASN22T1 does not require external feedback resistors. Its 2.2 V output is set by a factory-trimmed internal resistor network with ±2.5% accuracy at 25°C. This eliminates component count, board space, and calibration effort-enabling a complete boost solution with only four external parts: inductor, Schottky diode, input capacitor, and output capacitor.
How does the CE pin behave when left unconnected on NCP1400ASN22T1?
When the CE pin of the NCP1400ASN22T1 is left floating, the internal 150 nA pull-up current source connects it to the OUT pin, pulling CE to ~2.2 V-automatically enabling the regulator. This default-on behavior simplifies designs where always-on operation is desired without adding external pull-up components.
What is the maximum recommended output current for NCP1400ASN22T1?
The NCP1400ASN22T1 is rated for up to 100 mA of continuous output current under typical conditions (TA = 25°C, VIN ≥ 0.9 V). At higher loads or elevated temperatures, output current capability decreases due to thermal limits and internal current limiting (~350 mA peak switch current). For sustained 100 mA operation, proper PCB thermal relief and ambient temperature control are essential.
Can NCP1400ASN22T1 operate in continuous conduction mode (CCM)?
No, the NCP1400ASN22T1 is explicitly designed for stable operation only in discontinuous conduction mode (DCM). Its internal compensation network guarantees stability across full load and input/output voltage ranges under DCM. Operation in CCM is not characterized, may cause instability or oscillation, and is not supported per the datasheet design guidance.
NCP1400ASN22T1 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):
- 2.2V
- Voltage - Output (Min/Fixed):
- 2.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 80mA (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
NCP1400ASN22T1 FAQ
1.How can I place an order for NCP1400ASN22T1 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1400ASN22T1 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 NCP1400ASN22T1 reliable?
The price and inventory of NCP1400ASN22T1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1400ASN22T1 is usually 5 days.
3.What payment methods are accepted for NCP1400ASN22T1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1400ASN22T1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1400ASN22T1?
NCP1400ASN22T1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1400ASN22T1 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 NCP1400ASN22T1?
For technical support, including NCP1400ASN22T1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1400ASN22T1 requirements.
6.How does Aetrix verify that NCP1400ASN22T1 is sourced from the original manufacturer or authorized distributors?
All NCP1400ASN22T1 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 NCP1400ASN22T1 meets industry standards.
7.What is the process for return or replacement of NCP1400ASN22T1?
All NCP1400ASN22T1 units undergo pre-shipment inspection (PSI). If there is an issue with NCP1400ASN22T1, 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 NCP1400ASN22T1 part is unused and in its original packaging.
Return procedure for NCP1400ASN22T1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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