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STMicroelectronics LF60CPT
- Part No.:
- LF60CPT
- Manufacturer:
- STMicroelectronics
- Package:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Datasheet:
-
LF60CPT.pdf
- Description:
- IC REG LINEAR 6V 500MA PPAK
- Quantity:
- Payment:
- Shipping:
Inventory:4,537
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Product details
Overview
LF60CPT from STMicroelectronics is a 6.0 V fixed-output, very low dropout (LDO) linear regulator in TO-220FP package with logic-controlled shutdown, 500 mA output current capability, 0.45 V typical dropout at 200 mA, and ±2% output voltage accuracy at 25°C. It operates across -40 to 125°C junction temperature and supports battery-powered systems requiring ultra-low quiescent current (50 µA in OFF mode).
For engineers reviewing the LF60CPT datasheet, LF60CPT pinout, LF60CPT application, or LF60CPT equivalent, key selection considerations include its TTL-compatible enable input (pin 2), minimal 2.2 µF output capacitor requirement for stability, 80 dB supply voltage rejection at 120 Hz, thermal shutdown protection, and suitability for space-constrained industrial and automotive local regulation.
Technical Context
The LF60CPT implements a PNP pass transistor architecture enabling ultra-low dropout voltage (0.45 V typ. at 200 mA) and high PSRR (80 dB @ 120 Hz). Its internal bandgap reference and error amplifier maintain tight DC output regulation under load and line variations.
Logic-controlled shutdown (TTL-compatible INH input on pin 2) enables system-level power sequencing and standby mode control. The device integrates current limiting and thermal shutdown, with thermal resistance junction-to-case of 5°C/W and junction-to-ambient of 60°C/W in TO-220FP package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 6.0 V ±2% at 25°C - ensures stable rail for 6 V logic or analog subsystems without external trimming. |
| Dropout Voltage | 0.45 V (typ.) at 200 mA - allows operation with input as low as 6.45 V, extending battery runtime in single-cell LiFePO₄ or dual-cell alkaline systems. |
| Quiescent Current | 50 µA (OFF mode), 500 µA (ON mode) - minimizes standby power loss in always-on monitoring circuits. |
| Output Current | 500 mA continuous - sufficient to power microcontrollers, sensors, and interface ICs in compact embedded nodes. |
| PSRR | 80 dB @ 120 Hz - suppresses ripple from switching pre-regulators or noisy DC sources feeding the LDO. |
| Operating Temp | -40 to 125°C junction - qualified for under-hood automotive and industrial control environments. |
| Stability Cap | 2.2 µF ceramic output capacitor - reduces board area and BOM cost vs. traditional 10–22 µF tantalum solutions. |
Pinout & Package
LF60CPT is housed in TO-220FP (Full Pack) package: 5-pin, vertical mounting, insulated tab, plastic body with metal heat sink pad. Pin 1 = Input, Pin 2 = Inhibit (TTL-compatible enable), Pin 3 = Ground, Pin 4 = Output, Pin 5 = Ground (thermal pad connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | Input voltage supply | Accepts 7–16 V DC input; must be decoupled with ≥0.1 µF ceramic near pin. |
| Pin 2 (INH) | Logic inhibit control | TTL-compatible shutdown input: <0.8 V = OFF (50 µA IQ), >2.0 V = ON (500 µA IQ); no pull-up required. |
| Pin 3 (GND) | Analog ground reference | Primary signal return path; connects to PCB ground plane under device footprint. |
| Pin 4 (OUT) | Regulated output | Delivers 6.0 V ±2% to load; requires 2.2 µF ceramic capacitor (ESR 0.1–10 Ω) on this node. |
| Pin 5 (GND) | Thermal ground pad | Electrically tied to Pin 3 internally; soldered to large copper pour for thermal dissipation (RthJA = 60°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Very low dropout | 0.45 V typical at 200 mA enables use with marginal input margins-critical for battery voltage decay tracking. |
| Logic-controlled shutdown | Pin 2 accepts standard TTL levels to disable output, reducing system standby power by >90% vs. always-on regulators. |
| Low-noise regulation | 50 µV RMS output noise (10 Hz–100 kHz) preserves signal integrity in ADC references and RF bias rails. |
| Robust protection | Integrated current limit and thermal shutdown prevent damage during overload or poor heatsinking conditions. |
| Minimal external components | Only two capacitors required (0.1 µF input + 2.2 µF output) simplifies layout and improves reliability over multi-cap designs. |
Applications
| Automotive Body Control Module | Industrial Sensor Node |
|---|---|
Use Scenario: Local 6 V supply for LIN transceiver and microcontroller in door module. IC Role / Device Role / Timing Role: Primary LDO regulator providing clean, sequenced 6 V rail with enable controlled by MCU GPIO. Use Value: 50 µA OFF-mode current extends sleep-mode battery life; 0.45 V dropout maintains regulation down to 6.45 V input during cold-crank events. | Use Scenario: Powering 6 V analog front-end (AFE) and low-power MCU in wireless vibration sensor. IC Role / Device Role / Timing Role: Low-noise local regulator for precision ADC reference and signal chain biasing. Use Value: 50 µV RMS output noise avoids quantization errors; 2.2 µF ceramic capacitor reduces size vs. legacy tantalum solutions. |
| Medical Portable Monitor | Smart Energy Meter |
Use Scenario: Backup 6 V rail for real-time clock and SRAM during main power interruption. IC Role / Device Role / Timing Role: Always-on LDO with shutdown disabled, delivering regulated 6 V from coin cell or supercapacitor. Use Value: 500 µA ON-mode quiescent current maximizes backup runtime; ±2% accuracy ensures RTC timing stability. | Use Scenario: Isolated 6 V supply for metrology ASIC and isolated RS-485 transceiver. IC Role / Device Role / Timing Role: Secondary LDO post-isolation, rejecting noise from flyback converter and enabling precise metering. Use Value: 80 dB PSRR at 120 Hz attenuates switching ripple; thermal shutdown protects against enclosure overheating in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LD1117S60TR | Fixed 6.0 V, SOT-223, 800 mA, 1.2 V dropout, no shutdown pin | Higher dropout limits low-input-voltage use; no enable function prevents system-level power gating | Select when board space is constrained and shutdown not required; verify thermal margin at 500 mA. |
| TPS7A1660DRBR | 6.0 V, 150 mA, 3 µA quiescent, adjustable enable threshold, WSON-8 | Lower current rating and higher cost; superior ultra-low-IQ suits long-life battery apps | Select only for sub-150 mA loads where nanoampere shutdown current is mandatory; not a drop-in replacement. |
Compared with LD1117S60TR and TPS7A1660DRBR, LF60CPT uniquely balances 500 mA output, 0.45 V dropout, integrated shutdown, and TO-220FP thermal performance-making it optimal for medium-current, thermally demanding, and power-sequenced applications where alternatives compromise on current, dropout, or control integration.
Availability
LF60CPT is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor nodes, portable medical monitors, and smart energy meters requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for LF60CPT 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
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing microcontrollers, power management ICs, sensors, and automotive-grade components since 1987.
The LF00 series was developed specifically for low-noise, low-power local regulation in battery-operated and thermally constrained systems-emphasizing ultra-low dropout, minimal external components, and robust protection across extended temperature ranges.
FAQ
What is the minimum input voltage required for LF60CPT to maintain regulation at 500 mA output?
At 500 mA load, the maximum dropout voltage is 0.7 V (per datasheet Table 9–20). Therefore, minimum input voltage is 6.0 V + 0.7 V = 6.7 V. Below this, output voltage drops linearly with input; operation below 6.7 V is permissible but unregulated.
Can LF60CPT be used without the inhibit pin connected?
Yes. Pin 2 (INH) is TTL-compatible and defaults to ON when left open or pulled high (>2.0 V). No external pull-up is required. However, for deterministic shutdown behavior in noisy environments, tie to GND or MCU GPIO.
Is the TO-220FP package electrically insulated?
Yes. The TO-220FP package features an insulated metal tab: the collector/heat sink pad (Pin 5) is electrically isolated from all other pins. This allows direct mounting to a grounded heatsink without shorting the output or input nodes.
What is the recommended output capacitor ESR range for stability?
The LF60CPT is stable with output capacitors having ESR between 0.1 Ω and 10 Ω, as specified in Tables 3–20. A 2.2 µF X7R ceramic capacitor with typical ESR ~20 mΩ meets this requirement and provides optimal transient response and size efficiency.
LF60CPT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-5, DPAK (4 Leads + Tab), TO-252AD
- Packaging:
- Tube
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 6V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.7V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 1 mA
- Current - Supply (Max):
- 12 mA
- PSRR:
- 75dB ~ 60dB (120Hz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- PPAK
LF60CPT FAQ
1.How can I place an order for LF60CPT through Aetrix?
Please submit a Request for Quotation (RFQ) for LF60CPT 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 LF60CPT reliable?
The price and inventory of LF60CPT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LF60CPT is usually 5 days.
3.What payment methods are accepted for LF60CPT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LF60CPT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LF60CPT?
LF60CPT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LF60CPT 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 LF60CPT?
For technical support, including LF60CPT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LF60CPT requirements.
6.How does Aetrix verify that LF60CPT is sourced from the original manufacturer or authorized distributors?
All LF60CPT 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 LF60CPT meets industry standards.
7.What is the process for return or replacement of LF60CPT?
All LF60CPT units undergo pre-shipment inspection (PSI). If there is an issue with LF60CPT, 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 LF60CPT part is unused and in its original packaging.
Return procedure for LF60CPT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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