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onsemi NCP752BSN18T1G
- Part No.:
- NCP752BSN18T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP752BSN18T1G.pdf
- Description:
- IC REG LINEAR 1.8V 200MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,867
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Product details
Overview
NCP752BSN18T1G from onsemi is a 200 mA ultra-low-noise, ultra-low-quiescent-current LDO regulator with fixed 1.8 V output, designed for RF-sensitive power domains in portable electronics. It delivers ±2% output accuracy across load/line/temperature, 130 mV typical dropout at 200 mA, 11.5 µVRMS noise (100 Hz–100 kHz), and 68 dB PSRR at 1 kHz - enabling clean biasing of power amplifiers in satellite radios and infotainment systems.
For engineers reviewing the NCP752BSN18T1G datasheet, pinout, applications, or equivalent options, key selection criteria include its Auto Low-Power Mode (12 µA IQ), active output discharge, open-drain Power Good flag with 92–96% VOUT threshold, and stability with only 1 µF ceramic output capacitor - critical for space-constrained battery-powered designs.
Technical Context
The NCP752BSN18T1G integrates a PMOS pass transistor with adaptive ground current control to maintain ultra-low quiescent current (12 µA typ.) across input voltages from 2.0 V to 5.5 V. Its internal bandgap reference and error amplifier deliver tight regulation while supporting fast transient response via internal soft-start and active discharge circuitry.
It features dual-mode protection: thermal shutdown at 160°C (with 20°C hysteresis) and foldback current limiting (400 mA typ.), plus undervoltage lockout (UVLO) activation at 1.5 V (rising). The open-drain PG output asserts low when VOUT falls below 92% of nominal, with programmable timeout delay (200 µs for NCP752B variant).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over load/line/temperature - ensures stable core voltage for 1.8 V logic and RF ICs without external feedback. |
| Max Output Current | 200 mA continuous - sufficient for powering baseband processors, RF transceivers, or sensor subsystems in handheld devices. |
| Dropout Voltage | 130 mV typical at 200 mA - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (2.4 V min) with margin. |
| Quiescent Current | 12 µA typical at no load - extends battery life in always-on monitoring or sleep-mode applications. |
| Output Noise | 11.5 µVRMS (100 Hz–100 kHz) - eliminates need for external noise-bypass capacitors in RF PA bias rails. |
| PSRR | 68 dB at 1 kHz - suppresses switching noise from upstream DC-DC converters feeding the LDO input. |
| Power Good Threshold | 92–96% VOUT rising/falling - provides reliable system reset signaling with built-in hysteresis to prevent chatter. |
Pinout & Package
Package: XDFN-6 (1.5 mm × 1.5 mm, 0.5 mm pitch, Case 711AE), thermally enhanced with exposed pad for PCB heat dissipation (RJA = 149°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input supply connection | Accepts 2.0–5.5 V input; requires ≥1 µF ceramic capacitor to GND for stability and EMI suppression. |
| 2 (PG) | Open-drain Power Good output | Sinks current when VOUT < 92% nominal; requires external pull-up to enable system-level power sequencing or fault detection. |
| 3 (GND) | Power ground reference | Die ground tied to lead frame; must be soldered to large copper plane for thermal and noise performance. |
| 4 (EN) | Enable control input | Active-high logic: >0.9 V enables regulator; <0.4 V disables with 120 nA shutdown current and active discharge. |
| 5 (N/C) | No-connect terminal | Internally unconnected; may be tied to GND to improve thermal conduction without electrical impact. |
| 6 (OUT) | Regulated output | Delivers 1.8 V ±2%; stable with 1 µF ceramic capacitor; supports fast load transients up to 200 mA step. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise (11.5 µVRMS) | Enables direct powering of noise-sensitive RF PAs and ADCs without added filtering components. |
| Auto Low-Power Mode | Reduces IQ to 12 µA at zero load - critical for multi-day battery life in IoT sensors and wearables. |
| Active output discharge | Pulls OUT to GND via 1 kΩ internal FET when disabled - prevents floating outputs and speeds system turn-off. |
| Stable with 1 µF ceramic COUT | Eliminates need for larger or specialized capacitors, reducing BOM cost and PCB area in compact designs. |
| Integrated protections | Thermal shutdown (160°C), current limit (400 mA), UVLO, and short-circuit immunity ensure robust field operation. |
Applications
| Satellite Radio Power Amplifier Bias | Smartphone Application Processor Core Supply |
|---|---|
Use Scenario: Providing ultra-clean 1.8 V bias to GaAs power amplifiers in satellite radio modules where switching noise degrades adjacent-channel rejection. IC Role / Device Role / Timing Role: Primary low-noise post-regulator after buck converter; supplies PA drain voltage with minimal ripple-induced AM-to-PM distortion. Use Value: 11.5 µVRMS noise and 68 dB PSRR eliminate need for discrete RC filters, saving board space and preserving PA efficiency. |
Use Scenario: Delivering tightly regulated 1.8 V core voltage to application processors during dynamic DVFS transitions in smartphones. IC Role / Device Role / Timing Role: Secondary LDO for processor I/O or memory interface rails; responds to 200 mA load steps within ±90 mV deviation. Use Value: 130 mV dropout and fast transient response ensure stable operation even as input drops during battery discharge. |
| Portable Medical Sensor Hub | Bluetooth® LE Audio Transceiver Supply |
Use Scenario: Powering low-power analog front-ends (AFE) and precision ADCs in wearable ECG monitors requiring sub-µV noise floor. IC Role / Device Role / Timing Role: Precision analog supply rail; maintains ±2% accuracy across −40°C to +85°C ambient range. Use Value: ±2% output tolerance and <20 µV/mA load regulation minimize calibration drift in clinical-grade measurements. |
Use Scenario: Supplying 1.8 V to Bluetooth LE audio SoCs during burst transmission, where RF sensitivity demands ultra-low supply noise. IC Role / Device Role / Timing Role: Dedicated LDO for BLE radio section; enabled/disabled synchronously with RF activity via EN pin. Use Value: 12 µA quiescent current and active discharge reduce standby power by >95% vs. standard LDOs, extending earbud battery life. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6210B182MR-G | 180 mA max output, 25 µA IQ, no PG output, 1.8 V fixed, SOT-25 package | Lacks Power Good flag and active discharge; lower current rating limits use in high-transient apps | Select when PG signaling and fast turn-off are unnecessary and board space allows SOT-25 footprint. |
| Richtek RT9013-18GB | 300 mA max output, 45 µA IQ, 1.8 V fixed, SOT-23-5 package, no active discharge | Higher IQ and no output discharge increase standby power and slow system shutdown | Choose for higher current headroom where ultra-low IQ and controlled turn-off are secondary priorities. |
Compared with XC6210B182MR-G and RT9013-18GB, the NCP752BSN18T1G uniquely combines 200 mA capability, 12 µA quiescent current, active discharge, and open-drain PG in a 1.5×1.5 mm XDFN package - making it optimal for RF-critical, battery-constrained designs requiring full power sequencing control.
Availability
NCP752BSN18T1G is available at Aetrix Electronics and suitable for satellite radio modules, smartphone power management subsystems, and portable medical instrumentation requiring stable component supply with guaranteed long-term availability.
Supply support for NCP752BSN18T1G 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 leader delivering energy-efficient, intelligent power and sensing solutions for automotive, industrial, cloud, medical, and IoT applications.
The NCP752 series targets ultra-low-noise, ultra-low-IQ power regulation in battery-powered RF and portable electronics - emphasizing clean power delivery without compromising runtime or board area.
FAQ
What is the minimum input voltage required for NCP752BSN18T1G to regulate 1.8 V output?
The NCP752BSN18T1G requires a minimum input voltage of 2.0 V per its operating range specification. With a typical dropout of 130 mV at 200 mA, it can maintain regulation down to VIN = 1.93 V under worst-case conditions - but design margin dictates using ≥2.0 V to guarantee ±2% output accuracy across temperature and load.
Does NCP752BSN18T1G require an external noise-bypass capacitor?
No, the NCP752BSN18T1G achieves 11.5 µVRMS output noise (100 Hz–100 kHz) without any external noise-bypass capacitor. Its internal architecture eliminates the need for additional filtering components - simplifying layout and reducing BOM count in RF-sensitive applications.
How does the Power Good (PG) output behave during startup and shutdown of NCP752BSN18T1G?
During startup, the PG pin remains low until VOUT rises above 92% of 1.8 V (≈1.656 V); it then goes high after a 200 µs timeout delay (NCP752B variant). During shutdown, PG goes low when VOUT falls below 94% (≈1.692 V), providing precise sequencing for downstream logic or microcontrollers in the NCP752BSN18T1G system.
Can NCP752BSN18T1G be used with tantalum output capacitors?
No - the NCP752BSN18T1G datasheet explicitly advises against tantalum capacitors due to their high and temperature-dependent ESR (>700 mΩ violates stability requirements). It is optimized for 1 µF ceramic (X5R/X7R) capacitors with low ESR/ESL, ensuring stability and fast transient response.
What thermal performance can be expected from NCP752BSN18T1G in a typical 4-layer PCB layout?
In a standard 4-layer FR-4 PCB with 645 mm² copper pour connected to the exposed thermal pad, the NCP752BSN18T1G exhibits RJA = 149°C/W. At 200 mA load with 3.3 V input (1.5 V drop), power dissipation is ~300 mW - resulting in ~45°C junction rise above ambient, well within the 125°C max operating limit.
NCP752BSN18T1G Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- SOT-23-5 Thin, TSOT-23-5
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 25 µA
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP752BSN18T1G FAQ
1.How can I place an order for NCP752BSN18T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP752BSN18T1G 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 NCP752BSN18T1G reliable?
The price and inventory of NCP752BSN18T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP752BSN18T1G is usually 5 days.
3.What payment methods are accepted for NCP752BSN18T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP752BSN18T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP752BSN18T1G?
NCP752BSN18T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP752BSN18T1G 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 NCP752BSN18T1G?
For technical support, including NCP752BSN18T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP752BSN18T1G requirements.
6.How does Aetrix verify that NCP752BSN18T1G is sourced from the original manufacturer or authorized distributors?
All NCP752BSN18T1G 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 NCP752BSN18T1G meets industry standards.
7.What is the process for return or replacement of NCP752BSN18T1G?
All NCP752BSN18T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP752BSN18T1G, 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 NCP752BSN18T1G part is unused and in its original packaging.
Return procedure for NCP752BSN18T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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