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STMicroelectronics LF60ABDT
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- Part No.:
- LF60ABDT
- Manufacturer:
- STMicroelectronics
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
LF60ABDT.pdf
- Description:
- IC REG LINEAR 6V 500MA DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:2,881
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Product details
Overview
LF60ABDT 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, ±1% output voltage accuracy at 25°C, and 0.45 V typical dropout at 200 mA. It serves as a local power rail regulator in battery-powered systems requiring low quiescent current and high PSRR.
For engineers reviewing the LF60ABDT datasheet, LF60ABDT pinout, LF60ABDT application, or LF60ABDT equivalent, key selection criteria include its 50 µA OFF-mode current, 80 dB supply voltage rejection at 120 Hz, -40 to 125°C operating junction temperature, and compatibility with only 2.2 µF ceramic output capacitance for stability.
Technical Context
The LF60ABDT implements a PNP pass transistor architecture enabling ultra-low dropout voltage and minimal load-dependent regulation shift. Its internal bandgap reference and error amplifier deliver tight DC output accuracy across temperature and line/load variations.
Shutdown control is TTL-compatible (VIL ≤ 0.8 V, VIH ≥ 2.0 V), allowing direct interfacing with microcontroller GPIOs. Thermal and current limiting are fully integrated, eliminating external protection circuitry in most applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 6.0 V ±1% at 25°C - ensures stable MCU core or sensor bias rail within tight tolerance |
| Dropout Voltage | 0.45 V typ. at 200 mA - enables operation from single-cell Li-ion (3.0–4.2 V) with 6 V output via boost+LDO hybrid |
| Quiescent Current | 50 µA typ. in OFF mode - extends battery life in deep-sleep states of portable devices |
| PSRR | 80 dB @ 120 Hz - suppresses switching noise from upstream DC/DC converters feeding the LDO input |
| Output Capacitance | 2.2 µF ceramic (ESR 0.1–10 Ω) - eliminates need for large electrolytic capacitors, reducing board area and cost |
| Operating Temp | -40 to 125°C junction - supports under-hood automotive modules and industrial edge controllers |
| Current Limit | 1 A short-circuit protection - prevents damage during output fault without external current-sense resistor |
Pinout & Package
LF60ABDT is housed in a 5-pin TO-220FP package with exposed tab (thermal pad) for enhanced heat dissipation. Pin 1 = Input, Pin 2 = Shutdown (TTL-compatible), Pin 3 = Ground, Pin 4 = Output, Pin 5 = Bypass (not used in standard configuration; tied to ground per datasheet Figure 1).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | Input (VI) | Accepts 7–16 V DC input; must be decoupled with ≥0.1 µF ceramic capacitor near pin |
| Pin 2 | Shutdown Control (VC) | Active-low enable: <0.8 V = OFF (50 µA IQ), >2.0 V = ON (500 µA IQ); compatible with 3.3 V/5 V logic |
| Pin 3 | Ground (GND) | Power and control ground reference; requires low-impedance connection to PCB ground plane |
| Pin 4 | Output (VO) | Regulated 6.0 V output; requires 2.2 µF ceramic capacitor (X5R/X7R) with ESR 0.1–10 Ω |
| Pin 5 | Bypass (BP) | Internally connected to GND; must be externally tied to ground for stability (per datasheet Section 1) |
Key Features
| Feature | Design Value |
|---|---|
| Logic-Controlled Shutdown | Enables system-level power gating: microcontroller can disable peripheral rails to reduce total system standby current |
| Ultra-Low Dropout | 0.45 V at 200 mA allows use with marginal input headroom-critical for multi-rail battery systems |
| Low-Noise Regulation | 50 µV RMS output noise (10 Hz–100 kHz) preserves signal integrity in analog front-ends and ADC references |
| Thermal Protection | Internal foldback current limit and thermal shutdown prevent latch-up or destruction during sustained overload |
| High PSRR at Low Frequencies | 80 dB at 120 Hz rejects ripple from AC/DC adapters and low-frequency switching regulators |
Applications
| Portable Medical Monitor | Automotive Body Control Module |
|---|---|
Use Scenario: Powering analog front-end and low-power MCU in handheld ECG device running on single Li-ion cell. IC Role / Device Role / Timing Role: Local 6 V rail generator for op-amp bias and precision ADC reference, enabled only during measurement cycles. Use Value: 50 µA OFF-mode current extends battery runtime by >3× versus non-shutdown LDOs; 2.2 µF CO saves PCB space vs. legacy 10 µF tantalum solutions. | Use Scenario: Supplying 6 V to LIN transceiver and door-lock actuator driver in BCM subassembly. IC Role / Device Role / Timing Role: Regulated auxiliary rail isolated from noisy main 12 V battery bus; shutdown synchronized with vehicle sleep mode. Use Value: 80 dB PSRR suppresses alternator ripple and ignition noise; -40 to 125°C rating meets AEC-Q100 Grade 2 requirements. |
| Industrial IoT Sensor Node | Point-of-Sale Terminal |
Use Scenario: Providing clean 6 V supply to RF SoC and MEMS accelerometer in battery-operated wireless sensor. IC Role / Device Role / Timing Role: Primary LDO for RF section, activated only during transmission bursts to minimize average current draw. Use Value: 0.45 V dropout enables >90% energy extraction from depleted Li-SOCl₂ cells (down to 6.45 V input); 50 µV noise avoids RF desensitization. | Use Scenario: Generating 6 V for thermal print head driver and smart card reader in compact POS terminal. IC Role / Device Role / Timing Role: Dedicated regulator for high-current pulsed loads, decoupled from logic rails to prevent brownouts. Use Value: 1 A current limit handles 500 mA print-head surges without external current limiting; TO-220FP package allows heatsink attachment for thermal management. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LDL112PU33R | 3.3 V fixed output, 200 mA max, 170 mV dropout, SOT-23-5 package | Lower current, lower voltage, smaller footprint - unsuitable for 6 V/500 mA requirement | Select only if system uses 3.3 V rail and space-constrained layout; not drop-in for LF60ABDT |
| LDL112PU60R | 6.0 V fixed output, 200 mA max, 170 mV dropout, SOT-23-5 package | Same output voltage but 300 mA lower current rating and no shutdown pin | Use where board space is critical and peak load ≤200 mA; requires external enable logic if shutdown needed |
Compared with LDL112PU60R, LF60ABDT delivers 2.5× higher output current and integrated TTL shutdown, making it suitable for higher-power peripherals; versus LDL112PU33R, it addresses 6 V system rails directly without level-shifting overhead.
Availability
LF60ABDT is available at Aetrix Electronics and suitable for portable medical monitors, automotive body control modules, industrial IoT sensor nodes, and point-of-sale terminals requiring stable component supply with long lifecycle assurance.
Supply support for LF60ABDT 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 analog components for industrial, automotive, and consumer markets.
The LF00 series was developed specifically for ultra-low-power, low-noise local regulation in battery-critical and thermally constrained applications-emphasizing minimal dropout, microampere quiescent current, and robustness across extended temperature ranges.
FAQ
What is the minimum input voltage required for LF60ABDT to maintain 6.0 V output at 500 mA?
The dropout voltage is 0.7 V max at 500 mA (per Table 9 electrical characteristics). Therefore, minimum input voltage is 6.0 V + 0.7 V = 6.7 V. Operation below this causes output collapse; design margin recommends ≥7.0 V input for full-load stability across temperature and tolerance.
Can LF60ABDT be used without the bypass (Pin 5) connection?
No. Pin 5 (Bypass) must be externally connected to ground per datasheet Figure 1 and Section 1. Leaving it floating violates stability conditions and may cause oscillation or erratic regulation. The internal circuitry relies on this grounded node for compensation and noise filtering.
Is the TO-220FP package RoHS-compliant and lead-free?
Yes. LF60ABDT is manufactured in STMicroelectronics' RoHS-compliant, lead-free TO-220FP package (package mechanical data in Section 5, page 37). The device meets EU Directive 2011/65/EU and is marked "Pb-free" in ordering code documentation.
Does LF60ABDT require an input capacitor, and what value is recommended?
Yes. A minimum 0.1 µF ceramic capacitor (X7R/X5R) must be placed between Pin 1 (Input) and Pin 3 (Ground), located as close as possible to the device. This prevents high-frequency instability and improves transient response to input voltage steps or noise injection.
LF60ABDT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- 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:
- -
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
LF60ABDT FAQ
1.How can I place an order for LF60ABDT through Aetrix?
Please submit a Request for Quotation (RFQ) for LF60ABDT 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 LF60ABDT reliable?
The price and inventory of LF60ABDT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LF60ABDT is usually 5 days.
3.What payment methods are accepted for LF60ABDT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LF60ABDT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LF60ABDT?
LF60ABDT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LF60ABDT 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 LF60ABDT?
For technical support, including LF60ABDT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LF60ABDT requirements.
6.How does Aetrix verify that LF60ABDT is sourced from the original manufacturer or authorized distributors?
All LF60ABDT 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 LF60ABDT meets industry standards.
7.What is the process for return or replacement of LF60ABDT?
All LF60ABDT units undergo pre-shipment inspection (PSI). If there is an issue with LF60ABDT, 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 LF60ABDT part is unused and in its original packaging.
Return procedure for LF60ABDT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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