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LDBL20D-12R
STMicroelectronics
IC REG LIN 1.2V 200MA 4STSTAMP
21480 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA 4-STSTAMP (0.47x0.47)
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5.0 / 5.0
- (34 Ratings)
LDBL20D-12R
Product Overview
3718321
DiGi Electronics Part Number
LDBL20D-12R-DGManufacturer
STMicroelectronics
LDBL20D-12R
Description
IC REG LIN 1.2V 200MA 4STSTAMPInventory
21480 Pcs New Original In Stock
Linear Voltage Regulator IC Positive Fixed 1 Output 200mA 4-STSTAMP (0.47x0.47)
Quantity
Minimum 1
Minimum 1
Purchase and inquiry
Warranty & Returns
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LDBL20D-12R Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Output Configuration
Positive
Output Type
Fixed
Number of Regulators
1
Voltage - Input (Max)
5.5V
Voltage - Output (Min/Fixed)
1.2V
Voltage - Output (Max)
-
Voltage Dropout (Max)
-
Current - Output
200mA
Current - Quiescent (Iq)
40 µA
Current - Supply (Max)
100 µA
PSRR
80dB ~ 55dB (1kHz ~ 100kHz)
Control Features
Enable
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
4-XFQFN
Supplier Device Package
4-STSTAMP (0.47x0.47)
Base Product Number
LDBL20
Datasheet & Documents
HTML Datasheet
LDBL20D-12R-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
3 (168 Hours)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
497-LDBL20D-12RTR
Standard Package
3,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
Leur souci du détail et leur respect des délais font de DiGi Electronics un fournisseur fiable et précieux pour moi.
Dec 02, 2025
Shipping is always on schedule, which is vital for my busy lifestyle.
Dec 02, 2025
Customer feedback is valued highly, and it reflects in their proactive after-sales assistance.
Dec 02, 2025
The shipping process is consistently reliable, ensuring my orders arrive on time every time.
Dec 02, 2025
We are impressed by their responsive after-sales team, which keeps our operations running smoothly.
Dec 02, 2025
The efficiency of their shipping process exceeded my expectations.
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Frequently Asked Questions (FAQ)
Can the LDBL20D-12R replace a TLV755P12DBVR in a battery-powered IoT sensor node without compromising efficiency or thermal performance?
The LDBL20D-12R can serve as a functional replacement for the TLV755P12DBVR in low-current applications, but with important trade-offs. While both are 1.2V, 200mA LDOs, the LDBL20D-12R has a lower quiescent current (40 µA vs. 50 µA) and superior PSRR (80dB at 1kHz), making it better for noise-sensitive RF circuits. However, the TLV755P12DBVR offers a lower dropout voltage (~250mV at 200mA) compared to the LDBL20D-12R’s unspecified but likely higher dropout, which may limit usable input voltage headroom in ultra-low-battery scenarios. Additionally, the LDBL20D-12R’s 4-STSTAMP package (0.47x0.47mm) is more compact than the SOT-23-5 of the TLV755, aiding miniaturization—but requires careful PCB pad design due to its exposed thermal pad and MSL3 sensitivity. Always validate thermal performance under peak load with worst-case input voltage to avoid unexpected shutdowns.
What are the critical layout considerations when designing a PCB for the LDBL20D-12R to maintain stability and minimize output noise in a mixed-signal environment?
To ensure stability and low noise with the LDBL20D-12R, place the input and output capacitors (typically 1µF ceramic, X5R/X7R) as close as possible to the IC pins, minimizing loop area. Use a solid ground plane beneath the 4-STSTAMP package and connect the exposed pad directly to ground with multiple vias to improve thermal dissipation and reduce ground impedance. Avoid routing high-speed digital traces near the feedback or output nodes, as the LDBL20D-12R lacks internal compensation flexibility—any parasitic inductance or capacitance can degrade its 80dB PSRR benefit. Also, ensure the enable pin is driven cleanly; floating it may cause partial activation and increased IQ. For mixed-signal systems, star grounding at the LDBL20D-12R’s ground pin helps isolate analog loads from digital return currents.
Is the LDBL20D-12R suitable for automotive-grade applications requiring operation at 125°C junction temperature, and what derating should be applied?
While the LDBL20D-12R is rated for -40°C to 125°C junction temperature, using it in automotive environments requires careful derating due to power dissipation limits. At 125°C TJ and a typical θJA of ~90°C/W (estimated for 4-STSTAMP on standard PCB), the maximum allowable power dissipation drops to approximately 390mW. With a 5.5V input and 1.2V output at 200mA load, power dissipation reaches 860mW—far exceeding safe limits without aggressive thermal design. Therefore, in high-temperature automotive applications, either reduce the input voltage (e.g., using a pre-regulator) or limit output current to <100mA. Always perform thermal imaging under worst-case ambient conditions (e.g., 105°C Ta) and consider conformal coating compatibility due to MSL3 handling requirements.
How does the enable functionality of the LDBL20D-12R compare to load-switch-based power gating in terms of leakage current and wake-up time for intermittent sensor systems?
The LDBL20D-12R’s enable pin allows fast turn-on (~10µs typical) and reduces IQ to near-zero when disabled, making it effective for power gating in duty-cycled sensor nodes. However, when disabled, residual leakage through the pass element may still be higher than dedicated load switches like the STL6DN6F7 (which offers <10nA off-state leakage). For systems where microamp-level sleep current is critical, a hybrid approach—using the LDBL20D-12R for regulation and a low-leakage load switch upstream—can optimize both efficiency and control granularity. Note that the LDBL20D-12R’s enable threshold is not fully specified in all datasheets; validate logic levels (typically ~0.8V VIH min) with your MCU to avoid unintended activation during brownouts or startup transients.
Can the LDBL20D-12R be used in parallel with another LDO to increase output current beyond 200mA, and what risks should be mitigated?
Paralleling the LDBL20D-12R with another identical unit to exceed 200mA is not recommended without active current sharing. Due to manufacturing tolerances in reference voltage and pass element characteristics, one regulator may carry significantly more current, leading to thermal runaway—especially given the tiny 4-STSTAMP package’s limited heat spreading. Even minor ΔVout mismatches (<10mV) can cause one LDBL20D-12R to source >70% of the total load. If higher current is needed, select a single LDO rated for the required load (e.g., STLQ025 series for 250mA) instead. If paralleling is unavoidable, add small ballast resistors (e.g., 0.5Ω, 1% tolerance) in series with each output and ensure symmetrical layout—but this reduces efficiency and increases dropout, negating the benefits of the LDBL20D-12R’s low IQ in most use cases.
Quality Assurance (QC)
DiGi ensures the quality and authenticity of every electronic component through professional inspections and batch sampling, guaranteeing reliable sourcing, stable performance, and compliance with technical specifications, helping customers reduce supply chain risks and confidently use components in production.
LDBL20D-12R CAD Models
STMicroelectronics LDBL20D-12R PCB symbols & footprints
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