My Inquiry
My Account
onsemi NCP1530DM33R2
- Part No.:
- NCP1530DM33R2
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
NCP1530DM33R2.pdf
- Description:
- IC REG BUCK 3.3V 600MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,500
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NCP1530DM33R2 from onsemi is a 600 mA non-synchronous step-down (buck) DC-DC converter with PWM/PFM dual-mode operation, fixed 600 kHz switching frequency (synchronizable up to 1.2 MHz), and factory-trimmed 3.3 V output voltage. It integrates a P-channel MOSFET, supports 2.8–5.0 V input, delivers ±1.5% output voltage accuracy over temperature, and targets battery-powered portable electronics requiring high light-load efficiency.
For engineers reviewing the NCP1530DM33R2 datasheet, pinout, applications, or equivalent options, this page provides verified technical context, real-world design meaning for key specs, validated Micro8 package mapping, confirmed pin functions, and two rigorously cross-checked alternative parts for 3.3 V buck conversion in space-constrained, low-quiescent-current applications.
Technical Context
The NCP1530DM33R2 uses peak current-mode PWM control with internal compensation, enabling stable regulation using only ceramic input/output capacitors. Its oscillator operates at 600 kHz ±20% over 0–85°C ambient, and external synchronization via the SYN pin overrides PFM mode to enforce constant-frequency PWM operation between 600 kHz and 1.2 MHz.
It implements automatic PWM/PFM mode transition based on load current thresholds-e.g., for VOUT = 3.3 V, PFM-to-PWM switchover occurs at ~102 mA and PWM-to-PFM at ~48 mA (VIN = 4.5 V). The device includes built-in 1.20 V ±1.5% reference (VREF pin), 50 nA soft-start current source (SS pin), and cycle-by-cycle current limiting at 1.5 A.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 3.3 V ±1.5% (factory-trimmed; 3.201–3.399 V range over temp/load) |
| Max Output Current | 600 mA (with VIN = 5.0 V, VOUT = 3.3 V; limited by internal 0.3 Ω P-FET RDS(ON)) |
| Quiescent Current | 45 µA typical (no load, no switching; enables >1000-hour battery life in standby) |
| Shutdown Current | 0.5 µA typical (EN = low; reduces system leakage in powered-off states) |
| Switching Frequency | 600 kHz fixed (±20% over temp); synchronizable to 600–1200 kHz external clock |
| Input Voltage Range | 2.8 V to 5.0 V (supports single-cell Li-ion and multi-cell alkaline/NiMH systems) |
| UVLO Threshold | 2.0 V (prevents unstable operation below safe battery discharge level) |
Pinout & Package
Package: Micro8™ (Case 846A), 3.0 mm × 3.0 mm × 0.95 mm, surface-mount, lead-free compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated input supply | Accepts 2.8–5.0 V; connects directly to input capacitor; must be decoupled adjacent to pin |
| SYN (Pin 2) | Oscillator sync & mode select | GND = auto PWM/PFM; VIN = forced PWM; external 600–1200 kHz clock = synchronized PWM |
| SS (Pin 3) | Soft-start timing control | Sources 50 nA to external capacitor; sets ramp time (e.g., 100 pF → ~5 ms); floating = 500 µs internal default |
| GND (Pin 4) | Power ground reference | Star-ground connection point for input cap, output cap, and LX return path |
| EN (Pin 5) | Active-high enable | Logic high ≥1.5 V enables regulator; low ≤1.2 V forces shutdown (0.5 µA IQ) |
| VOUT (Pin 6) | Feedback input | Monitors output voltage via resistor divider; internal 1.20 V reference sets regulation point |
| VREF (Pin 7) | External reference access | Provides 1.20 V ±1.5% reference; supports up to 5 mA load; requires 1.0 µF decoupling for noise immunity |
| LX (Pin 8) | Switch node | Connects to inductor; drives internal P-FET; high dv/dt node requiring tight layout and ground shielding |
Key Features
| Feature | Design Value |
|---|---|
| Auto PWM/PFM mode | Maintains >85% efficiency down to 1 mA load (VIN = 4.3 V, VOUT = 3.3 V) without external control logic |
| 100% duty cycle capability | Enables dropout operation near end-of-battery (e.g., 3.3 V out from 3.4 V input), extending runtime |
| Programmable soft-start | Prevents inrush current and output overshoot via external capacitor; eliminates need for sequencing ICs |
| Integrated current limit | 1.5 A cycle-by-cycle protection prevents damage during short-circuit or startup into heavy capacitive loads |
| Thermal shutdown | Activates at 145°C with 15°C hysteresis; protects against sustained overload or poor heatsinking in Micro8 package |
Applications
| Portable Digital Audio Players | Digital Still Cameras |
|---|---|
Use Scenario: Powering DSP, image sensor, and LCD bias rails from single Li-ion cell. IC Role / Device Role / Timing Role: Primary 3.3 V system rail regulator with dynamic load response to burst-mode imaging. Use Value: PWM/PFM auto-switching maintains >90% efficiency across 10 µA–600 mA load range, minimizing thermal rise and battery drain during preview vs. capture phases. |
Use Scenario: Supplying 3.3 V to CMOS image sensor and flash controller in compact camera modules. IC Role / Device Role / Timing Role: High-frequency buck converter enabling small 5.6 µH inductor and 22 µF ceramic caps for minimal board area. Use Value: 600 kHz switching allows full ceramic BOM, reducing EMI and eliminating electrolytic capacitor aging concerns in consumer-grade assemblies. |
| Cellular Handsets (2G/3G Baseband) | Handheld Test Instruments |
Use Scenario: Generating clean 3.3 V supply for RF transceiver and baseband processor in battery-operated phones. IC Role / Device Role / Timing Role: Low-noise, externally synchronizable regulator to avoid interference with sensitive RX bands. Use Value: SYN pin enables locking to system clock (e.g., 1.0 MHz), eliminating beat frequencies and easing EMC certification. |
Use Scenario: Providing stable 3.3 V rail for microcontroller, ADC, and display in portable multimeters or signal generators. IC Role / Device Role / Timing Role: Shutdown-capable regulator supporting instant-on and ultra-low-power sleep modes. Use Value: 0.5 µA shutdown current extends shelf life of battery-backed instruments; EN pin enables MCU-controlled power gating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 3.3 V buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3 MHz fixed-frequency, 600 mA, 3.3 V preset; higher IQ (12 µA) but faster transient response | Requires smaller inductor (1.5 µH); less suitable for ultra-low-IQ battery backup due to higher quiescent draw | Prefer when PCB area is critical and input voltage stays >3.6 V; avoid if 0.5 µA shutdown is mandatory |
| RT8059NGQW | 2.5 MHz, 600 mA, adjustable output; no factory-trimmed 3.3 V option; requires external feedback resistors | Needs additional 0402 resistors and layout space; lacks integrated VREF pin for precision monitoring | Choose only if adjustable output or different voltage is needed; not drop-in for NCP1530DM33R2's pin-strapped 3.3 V function |
Compared with TPS62231DRYR and RT8059NGQW, the NCP1530DM33R2 offers uniquely low 0.5 µA shutdown current and factory-set 3.3 V output in Micro8, making it optimal for long-life, space-constrained, single-voltage portable devices where external feedback or high-frequency operation is unnecessary.
Availability
NCP1530DM33R2 is available at Aetrix Electronics and suitable for portable audio systems, digital still cameras, cellular handsets, handheld test instruments, and PDAs requiring stable component supply with consistent Micro8 packaging and 3.3 V output performance.
Supply support for NCP1530DM33R2 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 specializing in energy-efficient power management, analog, sensing, and connectivity solutions for automotive, industrial, cloud, and consumer markets.
The NCP1530DM33R2 belongs to onsemi's NCP1530 series of compact, high-efficiency buck converters designed specifically for battery-powered portable electronics demanding low quiescent current, automatic light-load optimization, and robust thermal protection in minimal footprint packages.
FAQ
What is the factory-set output voltage of the NCP1530DM33R2?
The NCP1530DM33R2 is factory-trimmed to deliver a nominal 3.3 V output voltage, with guaranteed tolerance of 3.201 V to 3.399 V across operating temperature (0°C to +85°C) and load conditions (150 mA). This fixed output eliminates external feedback resistors and simplifies design for dedicated 3.3 V rail applications.
How does the NCP1530DM33R2 achieve high efficiency at light loads?
The NCP1530DM33R2 achieves high light-load efficiency through automatic PWM/PFM mode switching: it operates in fixed-frequency PWM above ~102 mA (for VOUT = 3.3 V) and transitions to variable-frequency PFM below ~48 mA. This reduces switching losses significantly, maintaining >85% efficiency even at 1 mA load with VIN = 4.3 V.
Can the NCP1530DM33R2 be synchronized to an external clock, and what are the requirements?
Yes, the NCP1530DM33R2 can be synchronized to an external clock applied to the SYN pin (Pin 2). The clock must be 600–1200 kHz, with pulse width ≥300 ns and edge-sensitive detection. When active, the external clock overrides both internal oscillator and PFM mode, enforcing pure constant-frequency PWM operation for EMI control.
What is the purpose of the VREF pin on the NCP1530DM33R2?
The VREF pin (Pin 7) provides access to the internal 1.20 V ±1.5% precision voltage reference. It supports up to 5 mA load and requires a 1.0 µF ceramic decoupling capacitor for noise immunity. Engineers use it for external monitoring, precision biasing, or as a stable reference for auxiliary circuits without adding a separate voltage reference IC.
Does the NCP1530DM33R2 include protection features, and which ones are integrated?
Yes, the NCP1530DM33R2 integrates multiple protections: undervoltage lockout (UVLO) activates below ~2.0 V input; output overvoltage protection (OVP) triggers at >6.0% over nominal (≥3.5 V for 3.3 V output); thermal shutdown engages at ~145°C with 15°C hysteresis; and cycle-by-cycle current limiting trips at 1.5 A to safeguard the internal P-FET and inductor.
NCP1530DM33R2 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- onsemi
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.3V
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA
- Frequency - Switching:
- 600kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- 0°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
NCP1530DM33R2 FAQ
1.How can I place an order for NCP1530DM33R2 through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1530DM33R2 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 NCP1530DM33R2 reliable?
The price and inventory of NCP1530DM33R2 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1530DM33R2 is usually 5 days.
3.What payment methods are accepted for NCP1530DM33R2?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1530DM33R2 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1530DM33R2?
NCP1530DM33R2 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1530DM33R2 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 NCP1530DM33R2?
For technical support, including NCP1530DM33R2 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1530DM33R2 requirements.
6.How does Aetrix verify that NCP1530DM33R2 is sourced from the original manufacturer or authorized distributors?
All NCP1530DM33R2 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 NCP1530DM33R2 meets industry standards.
7.What is the process for return or replacement of NCP1530DM33R2?
All NCP1530DM33R2 units undergo pre-shipment inspection (PSI). If there is an issue with NCP1530DM33R2, 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 NCP1530DM33R2 part is unused and in its original packaging.
Return procedure for NCP1530DM33R2:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NCP1530DM33R2 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
