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onsemi NCP603SN150T1G
- Part No.:
- NCP603SN150T1G
- Manufacturer:
- onsemi
- Package:
- SOT-23-5 Thin, TSOT-23-5
- Datasheet:
-
NCP603SN150T1G.pdf
- Description:
- IC REG LINEAR 1.5V 300MA 5TSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,077
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Product details
Overview
NCP603SN150T1G from onsemi is a fixed-output 1.5 V, 300 mA low-dropout (LDO) linear regulator in TSOP-5 package, designed for portable battery-powered systems requiring low noise (50 µVrms), fast enable response (15 µs), and high ESD robustness (HBM 3.5 kV). It operates from 1.75 V to 6 V input and delivers stable regulation for RF stages, audio players, and SMPS post-regulation.
For engineers reviewing the NCP603SN150T1G datasheet, pinout, applications, or equivalent options, key selection criteria include dropout voltage at 300 mA (max 350 mV), ±3% output tolerance over −40°C to +125°C, thermal shutdown at 175°C, and compatibility with low-ESR ceramic capacitors without stability constraints.
Technical Context
The NCP603SN150T1G implements a CMOS-based LDO architecture with internal current limiting and thermal shutdown. Its pass transistor is optimized for low dropout across the full 1.5 V output range, with dropout voltage specified at 150 mA (max 225 mV) and 300 mA (max 350 mV) under defined test conditions.
Enable functionality is implemented via a dedicated logic-level input (VTH(HI) = 0.9 V, VTH(LO) = 0.4 V) that places the device into sub-1 µA disable current mode. The fixed 1.5 V version uses Pin 4 as NC (no connection), distinguishing it from the adjustable variant which routes ADJ to that terminal.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±3% over −40°C to +125°C; ensures stable bias for low-voltage analog/RF circuits without external feedback. |
| Max Output Current | 300 mA continuous; supports moderate-power microcontrollers, sensors, and interface ICs in space-constrained portable designs. |
| Dropout Voltage | 225 mV max at 150 mA, 350 mV max at 300 mA (VOUT = 1.5 V); enables operation down to 1.75 V input, critical for single-cell Li-ion or Li-poly systems. |
| Noise Voltage | 50 µVrms (10 Hz–100 kHz, no bypass cap); eliminates need for external noise-reduction capacitors in VCO, PLL, and audio signal chains. |
| Enable Threshold | VEN(HI) ≥ 0.9 V, VEN(LO) ≤ 0.4 V; compatible with 1.8 V/3.3 V GPIOs and supports direct tie-to-VIN for always-on operation. |
| ESD Protection | HBM 3.5 kV, MM 200 V; meets AEC-Q100-002/-003, enabling use in handheld instrumentation with minimal board-level protection. |
| Operating Temp | −40°C to +125°C ambient; validated for automotive infotainment modules and industrial edge sensors without derating. |
Pinout & Package
Package: TSOP-5 (Case 483), 3.00 mm × 1.50 mm × 0.95 mm, Pb-free, moisture sensitivity level MSL1/260.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Positive power supply input | Accepts 1.75 V–6.0 V; requires local 1.0 µF ceramic decoupling; trace width impacts noise immunity and thermal performance. |
| 2 - GND | Power ground and substrate reference | Must connect to low-impedance ground plane; shared return path for input/output currents affects PSRR and load transient response. |
| 3 - ENABLE | Logic-controlled regulator enable | Pull ≥0.9 V to activate; pull ≤0.4 V to enter <1 µA standby; tie to VIN if always-on operation required. |
| 4 - NC | No connection (fixed-voltage version only) | Not internally bonded; PCB trace must be isolated; no routing or copper pour allowed per datasheet Note 1. |
| 5 - VOUT | Regulated 1.5 V output | Delivers up to 300 mA; requires 1.0 µF minimum ceramic output capacitor; ESR-independent stability simplifies layout. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise regulation | 50 µVrms output noise without bypass capacitor-enables clean power for RF front-ends and precision ADCs. |
| Fast enable turn-on | 15 µs typical startup delay-supports rapid power sequencing in multi-rail systems and low-power wake-up scenarios. |
| Thermal protection | 175°C junction shutdown with 10°C hysteresis-prevents permanent damage during sustained overload or poor heatsinking. |
| Wide input range | 1.75 V to 6.0 V operation-supports single-cell Li-ion (2.7–4.2 V), LiFePO4, and legacy 3.3 V/5 V rails without intermediate conversion. |
| Pb-free TSOP-5 | RoHS-compliant 5-pin surface-mount package with 0.95 mm pitch-compatible with standard reflow profiles and automated assembly. |
Applications
| Portable Audio Players | Noise-Sensitive RF Stages |
|---|---|
|
Use Scenario: Powering DACs, headphone amplifiers, and codec I/O in Bluetooth earbuds and portable music players. IC Role / Device Role / Timing Role: Primary 1.5 V LDO supplying analog signal chain; replaces switching regulators to eliminate switching noise coupling. Use Value: 50 µVrms noise floor preserves SNR in 24-bit audio paths; 300 mA capacity supports burst-mode playback without sag. |
Use Scenario: Biasing VCOs, LNAs, and mixer cores in UWB transceivers and cellular front-ends. IC Role / Device Role / Timing Role: Clean, low-ripple 1.5 V supply for oscillator core and RF active devices; rejects ripple from shared PMIC rails. Use Value: 62 dB PSRR at 120 Hz suppresses low-frequency switching artifacts; thermal shutdown prevents drift-induced frequency instability. |
| SMPS Post-Regulation | Hand-Held Instrumentation |
|
Use Scenario: Tight-tolerance final-stage regulation after buck converter in medical monitors and test equipment. IC Role / Device Role / Timing Role: Precision post-regulator correcting residual ripple and load-induced droop from upstream DC/DC stage. Use Value: ±3% output tolerance and 2.0 mV load regulation ensure consistent sensor excitation and ADC reference stability across 0–300 mA loads. |
Use Scenario: Powering microcontroller peripherals, display drivers, and precision op-amps in portable multimeters and oscilloscopes. IC Role / Device Role / Timing Role: System-level 1.5 V rail generator with enable control for power-gated subsystems and sleep/wake cycles. Use Value: 15 µs enable response enables synchronized wake-up of multiple ICs; −40°C to +125°C rating supports field-deployed ruggedized units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-1502E/TT | 1.5 V fixed, 250 mA max, 6 µA quiescent current, SOT-23-3 package (3-pin, no enable) | Lacks enable pin and thermal shutdown; lower current capacity limits use in burst-load applications. | Select when ultra-low IQ is critical and enable/control is handled externally; verify thermal margin at 300 mA. |
| Torex XC6206P152MR-G | 1.5 V fixed, 300 mA, 1.2 µA IQ, SOT-23-5 package with enable, but only 2 kV HBM ESD rating | Lower ESD robustness (2 kV vs. 3.5 kV) increases susceptibility to handling damage in production environments. | Prefer where minimal standby power dominates design priority; add board-level ESD protection if used in uncontrolled assembly. |
Compared with MCP1700T-1502E/TT and XC6206P152MR-G, the NCP603SN150T1G uniquely combines 300 mA output, 15 µs enable, 3.5 kV HBM ESD, and 50 µVrms noise in a single TSOP-5 footprint-making it optimal for noise-critical, thermally constrained, and production-hardened portable systems.
Availability
NCP603SN150T1G is available at Aetrix Electronics and suitable for portable audio players, noise-sensitive RF stages, and SMPS post-regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for NCP603SN150T1G 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 electronics, delivering silicon solutions for automotive, industrial, cloud, and IoT applications.
The NCP603 series was developed specifically for portable and battery-powered systems demanding ultra-low noise, fast enable, and robust operation across extended temperature ranges-targeting audio, RF, and instrumentation markets.
FAQ
What is the maximum input voltage for the NCP603SN150T1G?
The NCP603SN150T1G supports an absolute maximum input voltage of 6.5 V, but its recommended operating range is 1.75 V to 6.0 V. Operation above 6.0 V risks exceeding safe power dissipation limits, especially at high ambient temperatures or full 300 mA load. The minimum input is determined by dropout: for 1.5 V output at 300 mA, Vin must be ≥1.85 V (1.5 V + 350 mV).
Does the NCP603SN150T1G require an external bypass capacitor for noise reduction?
No, the NCP603SN150T1G does not require an external bypass capacitor to achieve its specified 50 µVrms noise performance (10 Hz–100 kHz). Unlike many low-noise LDOs, it integrates internal noise suppression circuitry, eliminating the need for a separate noise-reduction capacitor and associated startup delay penalties.
How is thermal shutdown triggered in the NCP603SN150T1G?
The NCP603SN150T1G activates thermal shutdown at a typical junction temperature of 175°C, with 10°C hysteresis. When triggered, the regulator disables output and enters a safe high-impedance state until junction temperature falls below ~165°C. This protects against permanent damage during sustained overload, inadequate PCB copper area, or elevated ambient conditions.
Can the NCP603SN150T1G be used with ceramic output capacitors?
Yes-the NCP603SN150T1G is explicitly designed for stability with low-ESR ceramic capacitors. The datasheet confirms no minimum ESR requirement, and recommends a minimum 1.0 µF X5R/X7R ceramic capacitor placed close to the VOUT and GND pins. Larger values (e.g., 10 µF) further improve load transient response and noise rejection.
What is the function of Pin 4 on the NCP603SN150T1G?
Pin 4 on the NCP603SN150T1G is a true no-connect (NC) terminal, as confirmed in the datasheet's PIN FUNCTION DESCRIPTION table and MARKING DIAGRAM note. It is not bonded internally and must remain unconnected on the PCB-no trace, pad, or copper pour should be routed to this pin to avoid parasitic coupling or reliability risk.
NCP603SN150T1G 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):
- 6V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 180 µA
- Current - Supply (Max):
- -
- PSRR:
- 62dB ~ 38dB (120Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Transient Voltage
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 5-TSOP
NCP603SN150T1G FAQ
1.How can I place an order for NCP603SN150T1G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP603SN150T1G 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 NCP603SN150T1G reliable?
The price and inventory of NCP603SN150T1G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP603SN150T1G is usually 5 days.
3.What payment methods are accepted for NCP603SN150T1G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP603SN150T1G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP603SN150T1G?
NCP603SN150T1G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP603SN150T1G 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 NCP603SN150T1G?
For technical support, including NCP603SN150T1G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP603SN150T1G requirements.
6.How does Aetrix verify that NCP603SN150T1G is sourced from the original manufacturer or authorized distributors?
All NCP603SN150T1G 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 NCP603SN150T1G meets industry standards.
7.What is the process for return or replacement of NCP603SN150T1G?
All NCP603SN150T1G units undergo pre-shipment inspection (PSI). If there is an issue with NCP603SN150T1G, 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 NCP603SN150T1G part is unused and in its original packaging.
Return procedure for NCP603SN150T1G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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