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onsemi NCP1400ASN22T1G
- Part No.:
- NCP1400ASN22T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP1400ASN22T1G.pdf
- Description:
- IC REG BOOST 2.2V 80MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,678
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Product details
Overview
NCP1400ASN22T1G 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 NCP1400ASN22T1G datasheet, pinout, applications, or equivalent options, key selection criteria include ultra-low startup voltage, discontinuous-mode stability, CE-controlled shutdown, 180 kHz fixed switching frequency, and minimal external component count (only four required).
Technical Context
The NCP1400ASN22T1G implements a voltage-mode PWM boost architecture operating exclusively in discontinuous conduction mode (DCM), with internal phase-compensated error amplification ensuring stability across full input/output and load ranges. Its 180 kHz oscillator exhibits ±20% tolerance and 0.11%/°C temperature coefficient.
Startup and hold functionality is validated down to 0.8 V and 0.3 V respectively, with soft-start limiting inrush by ramping output to ~1.5 V before regulation. The integrated LX switch features cycle-by-cycle current limiting with ~350 mA threshold and 0.65–1.0 V voltage limiter.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.2 V ±2.5% - factory-trimmed internal feedback network eliminates external resistors |
| Switching Frequency | 180 kHz ±20% - fixed-frequency PWM enables predictable EMI filtering and inductor selection |
| Startup Voltage | 0.8 V max - enables operation from single NiMH/alkaline cell at end-of-life |
| Max Output Current | 100 mA - achievable with appropriate inductor (22 µH typical) and layout |
| Quiescent Current | 27 µA typ (IDD1) - ensures micropower efficiency in standby-sensitive applications |
| Shutdown Current | 0.6 µA typ (IOFF) - achieved when CE pin < 0.3 V, extending battery life |
| Operating Temp Range | −40°C to +85°C ambient - qualified for industrial and portable consumer 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 input | Logic-controlled shutdown: ≥0.9 V = enabled; ≤0.3 V = disabled; floating = enabled via internal 150 nA pull-up to OUT |
| 2 - OUT | Output voltage monitor & supply rail | Provides regulated 2.2 V output and powers internal circuitry; also serves as reference for CE pull-up |
| 3 - NC | No internal connection | Must be left unconnected; no routing or grounding required |
| 4 - GND | Power and signal ground | Common return path for input, output, and internal circuits; requires low-impedance single-point grounding |
| 5 - LX | Switch node | Connects to inductor and Schottky diode anode; carries pulsed current up to 350 mA peak; voltage limited to ≤1.0 V |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low startup voltage | 0.8 V enables reliable boot from depleted single-cell batteries (e.g., 1× AA/AAA) |
| Integrated soft-start | 2.0 ms typical ramp prevents output overshoot and limits inrush into output capacitor |
| Discontinuous mode stability | On-chip phase compensation guarantees stable regulation without external compensation components |
| CE-controlled shutdown | Reduces total current draw to 0.6 µA, extending shelf life and standby time in always-on devices |
| Minimal BOM requirement | Only four external parts needed: inductor, Schottky diode, input cap (10 µF), output cap (68 µF) |
Applications
| White LED Torch Light | Digital Camera Backlight |
|---|---|
Use Scenario: Compact handheld flashlight powered by single alkaline or NiMH cell. IC Role / Device Role / Timing Role: Step-up regulator generating stable 2.2 V to drive parallel white LEDs at constant current via external resistor. Use Value: Enables full brightness even as battery voltage drops below 1.0 V, extending usable runtime by >40% versus linear regulators. | Use Scenario: Low-power digital camera LCD backlight requiring regulated voltage from aging battery. IC Role / Device Role / Timing Role: Fixed-frequency boost converter supplying 2.2 V to LED driver IC with minimal ripple (<20 mV at 10 mA). Use Value: Delivers consistent luminance across battery discharge curve while maintaining >85% efficiency at 5–20 mA loads. |
| Personal Digital Assistant (PDA) | Electronic Game Handheld |
Use Scenario: Legacy PDA with monochrome LCD and flash memory, operating from one or two cells. IC Role / Device Role / Timing Role: Primary 2.2 V supply rail for logic and display subsystems, activated only during active use. Use Value: Reduces system quiescent current to sub-µA during sleep via CE control, enabling multi-week standby. | Use Scenario: Battery-powered handheld game with audio, LCD, and button interface. IC Role / Device Role / Timing Role: Efficient 2.2 V rail for microcontroller I/O and audio codec, synchronized to game activity. Use Value: Supports burst-mode operation-powers up only during screen refresh or sound playback-cutting average current by 70%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-up regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS61022DRVR | Higher 2.2 V output accuracy (±1%), 1.2 MHz switching, 1.8 A switch current, but requires external feedback resistors | Supports higher output currents (>200 mA) and faster transient response; less suitable for ultra-low-IQ designs | Choose when higher precision, higher current, or smaller inductor size is prioritized over micropower operation |
| MAX17222ELT+T | Lower 0.4 V startup, 500 mA switch, 500 kHz, integrated Schottky, but 2.2 V output requires external resistor divider | Better for deeply discharged batteries and higher load demands; lacks internal voltage setpoint | Prefer when minimum input voltage is <0.6 V or when board space constraints favor integrated diode |
Compared with TPS61022DRVR and MAX17222ELT+T, the NCP1400ASN22T1G offers lowest startup voltage among fixed-output variants, zero-resistor configuration, and industry-leading shutdown current-making it optimal for cost-sensitive, long-life, single-cell portable devices where simplicity and ultra-low power dominate.
Availability
NCP1400ASN22T1G is available at Aetrix Electronics and suitable for white LED torch lights, digital camera backlights, PDAs, electronic game handhelds, and other portable battery-powered systems requiring stable component supply with guaranteed long-term availability.
Supply support for NCP1400ASN22T1G 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 silicon solutions for automotive, industrial, cloud, medical, and portable electronics.
The NCP1400ASN22T1G belongs to the NCP1400A micropower boost regulator family, engineered specifically for ultra-low-voltage battery-powered portable equipment where extended runtime, minimal external components, and guaranteed start-up from near-dead cells are critical design requirements.
FAQ
What is the minimum input voltage required for NCP1400ASN22T1G to start switching?
The NCP1400ASN22T1G starts switching at a maximum of 0.95 V input (typical 0.8 V) under no-load conditions. This ultra-low startup voltage allows reliable operation from a single partially discharged alkaline or NiMH cell. Performance is validated per Figure 20 and Table "Minimum Startup Voltage" in the datasheet, with temperature derating accounted for across −40°C to +85°C.
Can NCP1400ASN22T1G operate with an input voltage lower than its output voltage?
Yes - the NCP1400ASN22T1G is a step-up (boost) regulator and is specifically designed to operate with input voltages as low as 0.2 V (hold voltage), well below its 2.2 V regulated output. It achieves this using discontinuous conduction mode and an integrated power MOSFET with low RDS(on), enabling efficient voltage boosting even at sub-0.5 V inputs.
Does NCP1400ASN22T1G require external feedback resistors to set its 2.2 V output?
No - the NCP1400ASN22T1G has a factory-trimmed internal feedback network that fixes the output at 2.2 V ±2.5%. No external resistors are needed, reducing BOM count, PCB area, and calibration complexity. This distinguishes it from adjustable boost ICs like the NCP1402 or TPS61022, which require external dividers.
What is the recommended inductor value for NCP1400ASN22T1G in a typical application?
The recommended inductor value for NCP1400ASN22T1G is 22 µH, as validated in all application waveforms and efficiency plots (e.g., Figures 5–7). Inductors between 18 µH and 27 µH are supported; 22 µH balances peak current capability (~350 mA), efficiency (>85% at 10 mA), and physical size. Saturation current rating must exceed 400 mA, and DCR should be <1.0 Ω.
How does the CE pin function on NCP1400ASN22T1G, and what happens if it's left floating?
The CE pin on NCP1400ASN22T1G enables or disables the regulator: ≥0.9 V = enabled, ≤0.3 V = disabled. If left floating, an internal 150 nA pull-up current source connects CE to the OUT pin, automatically enabling the device. This simplifies designs where always-on operation is acceptable and eliminates need for external pull-up resistors.
NCP1400ASN22T1G 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
NCP1400ASN22T1G FAQ
1.How can I place an order for NCP1400ASN22T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1400ASN22T1G 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 NCP1400ASN22T1G reliable?
The price and inventory of NCP1400ASN22T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1400ASN22T1G is usually 5 days.
3.What payment methods are accepted for NCP1400ASN22T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1400ASN22T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1400ASN22T1G?
NCP1400ASN22T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1400ASN22T1G 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 NCP1400ASN22T1G?
For technical support, including NCP1400ASN22T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1400ASN22T1G requirements.
6.How does Aetrix verify that NCP1400ASN22T1G is sourced from the original manufacturer or authorized distributors?
All NCP1400ASN22T1G 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 NCP1400ASN22T1G meets industry standards.
7.What is the process for return or replacement of NCP1400ASN22T1G?
All NCP1400ASN22T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP1400ASN22T1G, 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 NCP1400ASN22T1G part is unused and in its original packaging.
Return procedure for NCP1400ASN22T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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