My Inquiry
My Account
NXP Semiconductors NX1117CE285Z,115
- Part No.:
- NX1117CE285Z,115
- Manufacturer:
- NXP Semiconductors
- Package:
- TO-261-4, TO-261AA
- Datasheet:
-
NX1117CE285Z,115.pdf
- Description:
- IC REG LINEAR 2.85V 1A SOT223
- Quantity:
- Payment:
- Shipping:
Inventory:3,697
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
NX1117CE285Z,115 from NXP Semiconductors is a fixed-output 2.85 V, ±1.25 % accuracy, 1 A low-dropout linear voltage regulator in SOT223 package, featuring SOA control, thermal shutdown, and output current limiting - used as post-regulator for DC-DC converters in USB devices and hard drive controllers.
For engineers reviewing the NX1117CE285Z,115 datasheet, NX1117CE285Z,115 pinout, NX1117CE285Z,115 application, or NX1117CE285Z,115 equivalent, key selection criteria include dropout voltage at 800 mA (1.2 V max), input voltage range (4.25–10 V), PSRR (63 dB), thermal resistance (72 K/W on FR4), and no minimum load requirement.
Technical Context
The NX1117CE285Z,115 implements Safe Operating Area (SOA) control to dynamically limit output current under high VIN–VOUT conditions, preventing thermal runaway. Its internal reference voltage is trimmed to 1.250 V with ±1.25 % output accuracy over −40 °C to +125 °C ambient.
It operates without external feedback components (fixed-output configuration), uses internal current limiting and thermal shutdown for fault protection, and maintains regulation down to 0 mA load - eliminating need for dummy loads in low-power standby modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output voltage | 2.85 V ±1.25 % (2.779–2.921 V over full temp/load range) |
| Max output current | 1 A continuous; current-limited to 1.2–1.5 A depending on VIN–VOUT |
| Dropout voltage | 1.2 V max at 800 mA load - enables operation with only 4.05 V input at full load |
| Input voltage range | 4.25 V to 10 V - compatible with 5 V rail post-DC/DC conversion |
| PSRR | 63 dB at 120 Hz - suppresses ripple from upstream switching regulators |
| Quiescent current | 5–6 mA - stable across input voltage and temperature; no load dependency |
| Thermal shutdown | Activates at 135 °C junction temperature - protects against sustained overload |
Pinout & Package
SOT223 (SC-73) plastic surface-mount package with integrated heat sink pad; 4 leads, standard footprint per Figure 21 (6.7 × 3.7 mm body, 1.8 mm height).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | GND | Ground reference and thermal path; connected to large copper pour for heat dissipation |
| 2 | VOUT | Main regulated output; electrically and thermally tied to pin 4 |
| 3 | VIN | Unregulated input; requires local 680 nF ceramic capacitor with 1 Ω ESR |
| 4 | VOUT | Second output connection; paralleled with pin 2 to reduce trace resistance and improve thermal conduction |
Key Features
| Feature | Design Value |
|---|---|
| No minimum load requirement | Regulates stably from 0 mA to 1 A - eliminates need for bleed resistors in battery-powered sleep modes |
| SOA control | Automatically reduces current limit when VIN–VOUT exceeds safe power dissipation threshold - prevents thermal failure without external circuitry |
| Wide input range (up to 20 V) | Supports 5 V, 9 V, and 12 V input rails while maintaining 2.85 V output - simplifies BOM across multiple power domains |
| Low output noise | 0.003 % RMS noise (10 Hz–10 kHz) - suitable for noise-sensitive analog circuits like ADC references |
| Robust ESD rating | 2 kV HBM / 400 V MM - meets industrial IEC 61000-4-2 level for board-level reliability |
Applications
| USB Device Power Regulation | Hard Drive Controller Supply |
|---|---|
Use Scenario: Regulating 5 V USB bus voltage to clean 2.85 V for USB peripheral logic and interface ICs. IC Role / Device Role / Timing Role: Post-regulator providing low-noise, stable supply to USB PHY, microcontroller, and EEPROM. Use Value: 63 dB PSRR rejects switching noise from upstream DC-DC converter; no minimum load allows zero-current suspend mode. | Use Scenario: Delivering precise 2.85 V to servo control ASICs and spindle motor drivers in 2.5″ HDDs. IC Role / Device Role / Timing Role: Primary LDO for real-time actuator positioning circuitry requiring tight voltage tolerance. Use Value: ±1.25 % output accuracy ensures consistent timing margins; SOA control prevents thermal shutdown during burst write operations. |
| Battery Charger Auxiliary Rail | Consumer Equipment Point-of-Load |
Use Scenario: Generating 2.85 V bias for charger management ICs and fuel gauges in Li-ion portable devices. IC Role / Device Role / Timing Role: Low-quiescent LDO supplying always-on monitoring circuitry during charging cycles. Use Value: 5–6 mA IQ enables >1-year shelf life; 135 °C thermal shutdown prevents battery overheat hazards. | Use Scenario: Local regulation for FPGA I/O banks or audio codec analog supplies in set-top boxes and streaming devices. IC Role / Device Role / Timing Role: Fixed-output point-of-load regulator decoupling digital and analog domains. Use Value: Dual VOUT pins (pins 2 & 4) lower effective output impedance and improve transient response to dynamic load steps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV1117-285CDR | ±2 % output accuracy; 800 mA max output; higher dropout (1.3 V @ 800 mA) | Limited to lower ambient temps (−40 °C to +125 °C not guaranteed); no SOA control | Lower-cost option where 2.85 V ±2 % and reduced thermal robustness are acceptable |
| AP2112K-2.85TRG1 | ±2 % accuracy; 600 mA max; 60 dB PSRR; no thermal shutdown | Not rated for 125 °C operation; lacks current limiting and SOA protection | Suitable for cost-sensitive consumer applications with moderate thermal margin and <600 mA load |
Compared with TLV1117-285CDR and AP2112K-2.85TRG1, the NX1117CE285Z,115 delivers tighter accuracy (±1.25 %), higher current (1 A), integrated SOA control, and guaranteed 125 °C operation - making it preferred for industrial and storage applications demanding long-term stability and fault resilience.
Availability
NX1117CE285Z,115 is available at Aetrix Electronics and suitable for USB devices, hard drive controllers, and battery charger auxiliary rails requiring stable component supply with full industrial temperature support and long-term lifecycle continuity.
Supply support for NX1117CE285Z,115 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
NXP Semiconductors is a global semiconductor company headquartered in Eindhoven, Netherlands, specializing in secure connectivity solutions for automotive, industrial, and IoT markets.
The NX1117C/NX1117CE series was designed specifically for high-reliability post-regulation in space-constrained, thermally demanding applications - emphasizing SOA protection, wide input range, and no-minimum-load operation.
FAQ
What is the maximum input voltage for the NX1117CE285Z,115?
The NX1117CE285Z,115 supports up to 10 V input under normal operating conditions (4.25–10 V for 2.85 V output). Absolute maximum input voltage is 20 V per limiting values, but operation above 10 V risks exceeding safe power dissipation limits without derating.
Does the NX1117CE285Z,115 require an external capacitor on the output?
Yes, the NX1117CE285Z,115 requires a minimum 680 nF ceramic output capacitor with ~1 Ω ESR, as specified in Table 8. This ensures stability and transient response; larger values (e.g., 10 µF) improve load step performance as shown in Figure 17.
Is the NX1117CE285Z,115 pin-compatible with other SOT223 LDOs?
The NX1117CE285Z,115 uses standard SOT223 pinout (GND, VOUT, VIN, VOUT), matching industry-standard footprints. However, pin compatibility does not guarantee functional equivalence - verify SOA behavior, PSRR, and thermal shutdown thresholds before substitution.
What is the thermal resistance of the NX1117CE285Z,115 on a standard FR4 PCB?
On a standard FR4 PCB with single-sided copper and tin-plated finish, the NX1117CE285Z,115 has Rth(j-a) = 72 K/W (Table 7). With a 6 cm² output pad, it improves to 45 K/W - critical for sustaining 1 A continuous load at elevated ambient temperatures.
How does the SOA control function in the NX1117CE285Z,115?
The SOA control in the NX1117CE285Z,115 dynamically reduces the output current limit when VIN–VOUT exceeds safe levels, preventing junction temperature from exceeding 150 °C. This is implemented internally - no external components required - and complements thermal shutdown for comprehensive protection.
NX1117CE285Z,115 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- NXP Semiconductors
- Series:
- -
- Package/Case:
- TO-261-4, TO-261AA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 20V
- Voltage - Output (Min/Fixed):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 1.2V @ 800mA
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- 6 mA
- Current - Supply (Max):
- -
- PSRR:
- 63dB (120Hz)
- Control Features:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-73
NX1117CE285Z,115 FAQ
1.How can I place an order for NX1117CE285Z,115 through Aetrix?
Please submit a Request for Quotation (RFQ) for NX1117CE285Z,115 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 NX1117CE285Z,115 reliable?
The price and inventory of NX1117CE285Z,115 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for NX1117CE285Z,115 is usually 5 days.
3.What payment methods are accepted for NX1117CE285Z,115?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for NX1117CE285Z,115 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for NX1117CE285Z,115?
NX1117CE285Z,115 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your NX1117CE285Z,115 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 NX1117CE285Z,115?
For technical support, including NX1117CE285Z,115 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your NX1117CE285Z,115 requirements.
6.How does Aetrix verify that NX1117CE285Z,115 is sourced from the original manufacturer or authorized distributors?
All NX1117CE285Z,115 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 NX1117CE285Z,115 meets industry standards.
7.What is the process for return or replacement of NX1117CE285Z,115?
All NX1117CE285Z,115 units undergo pre-shipment inspection (PSI). If there is an issue with NX1117CE285Z,115, 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 NX1117CE285Z,115 part is unused and in its original packaging.
Return procedure for NX1117CE285Z,115:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
NX1117CE285Z,115 Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
Tech Hub
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…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
