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onsemi NCP1530DM27R2G
- Part No.:
- NCP1530DM27R2G
- Manufacturer:
- onsemi
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
NCP1530DM27R2G.pdf
- Description:
- IC REG BUCK 2.7V 600MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,068
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Product details
Overview
NCP1530DM27R2G from onsemi is a 600 mA non-synchronous PWM/PFM step-down DC-DC converter optimized for single-cell Li-ion or multi-cell alkaline/NiMH/NiCd battery-powered systems. It delivers a factory-programmed 2.7 V output, operates from 2.8 V to 5.0 V input, achieves up to 92% efficiency at 300 mA, and supports external synchronization from 600 kHz to 1.2 MHz - enabling compact portable power in digital still cameras and cellular handsets.
For engineers reviewing the NCP1530DM27R2G datasheet, pinout, applications, or equivalent options, key selection considerations include its 2.7 V fixed output voltage, 600 mA current capability with internal P-FET, programmable soft-start via SS pin, 47 µA quiescent current in active mode, and thermal shutdown at 145°C - all in the Micro8™ package.
Technical Context
The NCP1530DM27R2G implements peak-current-mode PWM control with an internally trimmed 600 kHz oscillator, supporting automatic PWM/PFM mode transition based on load current thresholds (e.g., 90 mA PFM-to-PWM switchover at VIN = 4.5 V). Its feedback loop references the internal 1.20 V ±1.5% voltage reference accessed at VREF pin (Pin 7), while regulation is enforced via VOUT pin (Pin 6) sensing.
Operation is governed by three primary control inputs: EN (active-high enable, internally pulled to VIN), SYN (mode selection/synchronization, internally pulled to GND), and SS (soft-start timing, sourced with 50 nA). The LX pin (Pin 8) drives the external inductor, and the internal P-channel MOSFET exhibits 0.3 Ω typical RDS(ON), enabling 600 mA output at VIN = 5.0 V and VOUT = 3.0 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.7 V ±3% (factory-trimmed, guaranteed over 0–85°C ambient) |
| Max Output Current | 600 mA (supported by internal P-FET with 0.3 Ω typical RDS(ON)) |
| Input Voltage Range | 2.8 V to 5.0 V (UVLO threshold at 2.0 V min, prevents unsafe low-VIN operation) |
| Quiescent Current | 47 µA typ (VOUT = 3.0 V, no switching; enables ultra-low-power standby) |
| Shutdown Current | 0.5 µA typ (achieved by pulling EN low; reduces system leakage) |
| Oscillator Frequency | 600 kHz ±20% (internal default; synchronizable to 600–1200 kHz external clock) |
| Soft-Start Time | 500 µs typ (internal default when SS pin floated; extendable with external capacitor) |
| Thermal Shutdown | 145°C activation with 15°C hysteresis (protects die during sustained overload or poor heatsinking) |
Pinout & Package
The NCP1530DM27R2G is housed in the Micro8™ plastic package (Case 846A), an 8-pin, low-profile surface-mount package with exposed pad for thermal enhancement. Pin numbering follows standard top-view orientation with Pin 1 at top-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Unregulated input supply | Accepts 2.8–5.0 V; powers internal circuitry and P-FET; requires local 22 µF ceramic bypass |
| SYN (Pin 2) | Synchronization & mode select | GND = auto PWM/PFM; VIN = fixed 600 kHz PWM; external 600–1200 kHz clock = sync mode |
| SS (Pin 3) | Soft-start timing control | Sourced with 50 nA; connects to external capacitor to control ramp rate of internal reference |
| GND (Pin 4) | Power ground reference | Common return for VIN, LX, and internal circuits; must be star-connected to minimize noise |
| EN (Pin 5) | Active-high enable | Pulled internally to VIN; driving low disables regulator and reduces IQ to 0.5 µA |
| VOUT (Pin 6) | Feedback input | Senses output voltage; connected directly to regulated rail for closed-loop control |
| VREF (Pin 7) | External voltage reference access | Provides 1.20 V ±1.5% reference; decoupled with 1.0 µF capacitor for noise immunity |
| LX (Pin 8) | Switch node | Connects to inductor; carries high di/dt switching current; requires short, low-inductance PCB trace |
Key Features
| Feature | Design Value |
|---|---|
| Automatic PWM/PFM mode switching | Maintains >85% efficiency down to 10 mA load via load-dependent mode transition (e.g., 90 mA PFM→PWM at VIN=4.5 V) |
| 100% duty cycle capability | Enables dropout operation near VOUT, maximizing usable battery life in low-VIN conditions |
| Externally programmable soft-start | Prevents inrush current and output overshoot using user-selected capacitor on SS pin (e.g., 100 pF → ~5 ms) |
| Built-in output overvoltage protection | Shuts down switching if VOUT exceeds nominal by >6% (typ), preventing damage to downstream 2.7 V logic |
| Internal current-limit protection | 1.5 A cycle-by-cycle peak current limit safeguards internal P-FET and inductor during short-circuit events |
| Low-profile Micro8™ package | Enables high-density layout in space-constrained portable devices; compatible with standard SMT reflow |
Applications
| Digital Still Camera | Cellular Handset Baseband |
|---|---|
Use Scenario: Powering image sensor and ISP core logic from single Li-ion cell (3.0–4.2 V). IC Role / Device Role / Timing Role: Primary 2.7 V buck regulator delivering stable, low-noise supply with fast transient response to handle burst capture loads. Use Value: 92% peak efficiency at 300 mA extends battery runtime; PFM mode maintains >80% efficiency at 10 mA standby current. |
Use Scenario: Supplying 2.7 V to baseband processor and RF transceiver ICs in GSM/UMTS handsets. IC Role / Device Role / Timing Role: System PMIC buck stage providing regulated voltage with EN-controlled sequencing and thermal fault protection. Use Value: 0.5 µA shutdown current minimizes battery drain during sleep mode; 145°C thermal shutdown prevents field failures under enclosure heat buildup. |
| Portable Audio DAC/Codec | Handheld Medical Scanner |
Use Scenario: Generating clean 2.7 V analog supply for audio DAC and headphone amplifier in Bluetooth earbuds. IC Role / Device Role / Timing Role: Low-noise, high-PSRR buck converter operating in fixed-frequency PWM mode (via SYN tied to VIN) to suppress switching noise in audio band. Use Value: 600 kHz switching frequency allows use of small 5.6 µH inductor and 22 µF ceramic capacitors, reducing BOM size and cost. |
Use Scenario: Powering CMOS image sensor and FPGA logic in battery-operated point-of-care ultrasound scanners. IC Role / Device Role / Timing Role: Main system regulator with programmable soft-start (via SS pin) to coordinate power-up sequencing with FPGA configuration. Use Value: External VREF access (Pin 7) enables precision monitoring of supply health; UVLO at 2.0 V prevents erratic behavior during battery depletion. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | 3 MHz fixed-frequency synchronous buck; 600 mA; 2.7 V output; 22 µA IQ; WSON-6 package | Higher switching frequency enables smaller passives but lacks PFM mode and external sync | Preferred for ultra-compact layouts where EMI filtering is less critical and higher IQ is acceptable |
| RT8059NGJ6 | 1.5 MHz synchronous buck; 600 mA; adjustable output (0.6–5.5 V); 30 µA IQ; TSOT-23-6 package | Requires external feedback resistors; no factory-fixed 2.7 V option; no PFM mode or sync pin | Chosen when output voltage flexibility or lower quiescent current outweighs need for auto-mode efficiency optimization |
Compared with TPS62231DRYR and RT8059NGJ6, the NCP1530DM27R2G uniquely combines factory-trimmed 2.7 V output, automatic PWM/PFM mode, external synchronization capability, and 0.5 µA shutdown current - making it optimal for cost-sensitive, battery-life-critical portable systems requiring minimal external components.
Availability
NCP1530DM27R2G is available at Aetrix Electronics and suitable for digital still cameras, cellular handsets, portable audio systems, handheld medical scanners, and battery-powered test equipment requiring stable component supply across extended production lifecycles.
Supply support for NCP1530DM27R2G 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 manufacturer specializing in energy-efficient power management, analog, sensors, and connectivity solutions for automotive, industrial, cloud, and IoT applications.
The NCP1530DM27R2G belongs to onsemi's NCP1530 family of compact, high-efficiency DC-DC converters designed specifically for battery-powered portable electronics where small size, low quiescent current, and adaptive light-load efficiency are critical.
FAQ
What is the factory-programmed output voltage of the NCP1530DM27R2G?
The NCP1530DM27R2G is factory-trimmed to deliver a precise 2.7 V output voltage, with tolerance of ±3% over temperature (0°C to +85°C ambient) and line/load conditions. This fixed output eliminates the need for external feedback resistors, simplifying design and reducing BOM count compared to adjustable regulators like the NCP1530DM33R2.
How does the NCP1530DM27R2G achieve high efficiency at light loads?
The NCP1530DM27R2G automatically switches from constant-frequency PWM to power-saving PFM mode below defined load thresholds - for example, transitioning at approximately 90 mA (PFM-to-PWM) and 38 mA (PWM-to-PFM) when VIN = 4.5 V. This dual-mode operation maintains >85% efficiency down to 10 mA, significantly extending battery life in standby or idle states.
Can the NCP1530DM27R2G be synchronized to an external clock, and what is the supported frequency range?
Yes, the NCP1530DM27R2G supports external synchronization via its SYN pin (Pin 2). When driven with a clean TTL/CMOS clock signal, it locks to frequencies between 600 kHz and 1.2 MHz. The device ignores signals outside this range and reverts to its internal 600 kHz oscillator if the external clock stops for several cycles - ensuring robust operation in noisy environments.
What protection features are integrated into the NCP1530DM27R2G?
The NCP1530DM27R2G integrates five key protections: (1) undervoltage lockout (UVLO) activating below 2.0 V, (2) output overvoltage protection (OVP) triggering at >6% above nominal, (3) cycle-by-cycle current limiting (1.5 A peak), (4) thermal shutdown at 145°C with 15°C hysteresis, and (5) power-saving shutdown mode (<0.5 µA IQ). These ensure safe, reliable operation across battery discharge and fault conditions.
What is the recommended input and output capacitor configuration for the NCP1530DM27R2G?
onsemi recommends a 22 µF low-ESR ceramic capacitor at VIN (Pin 1) placed adjacent to the pin, and a 22 µF ceramic capacitor at VOUT (Pin 6). The device is internally compensated for stability with ceramic outputs, and the low ESR minimizes output ripple (VRIPPLE ≈ IL_RIPPLE × ESR). Aluminum or tantalum alternatives are acceptable only if ESR ≤ 30 mΩ.
NCP1530DM27R2G 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):
- 3.7V
- Voltage - Input (Max):
- 5V
- Voltage - Output (Min/Fixed):
- 2.7V
- 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
NCP1530DM27R2G FAQ
1.How can I place an order for NCP1530DM27R2G through Aetrix?
Please submit a Request for Quotation (RFQ) for NCP1530DM27R2G 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 NCP1530DM27R2G reliable?
The price and inventory of NCP1530DM27R2G are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NCP1530DM27R2G is usually 5 days.
3.What payment methods are accepted for NCP1530DM27R2G?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NCP1530DM27R2G transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NCP1530DM27R2G?
NCP1530DM27R2G orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NCP1530DM27R2G 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 NCP1530DM27R2G?
For technical support, including NCP1530DM27R2G datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NCP1530DM27R2G requirements.
6.How does Aetrix verify that NCP1530DM27R2G is sourced from the original manufacturer or authorized distributors?
All NCP1530DM27R2G 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 NCP1530DM27R2G meets industry standards.
7.What is the process for return or replacement of NCP1530DM27R2G?
All NCP1530DM27R2G units undergo pre-shipment inspection (PSI). If there is an issue with NCP1530DM27R2G, 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 NCP1530DM27R2G part is unused and in its original packaging.
Return procedure for NCP1530DM27R2G:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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