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LM2830XQMF/NOPB
Texas Instruments
IC REG BUCK ADJ 1A SOT23-5
1423 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 1A SC-74A, SOT-753
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5.0 / 5.0
- (107 Ratings)
LM2830XQMF/NOPB
Product Overview
1479876
DiGi Electronics Part Number
LM2830XQMF/NOPB-DGManufacturer
Texas Instruments
LM2830XQMF/NOPB
Description
IC REG BUCK ADJ 1A SOT23-5Inventory
1423 Pcs New Original In Stock
Buck Switching Regulator IC Positive Adjustable 0.6V 1 Output 1A SC-74A, SOT-753
Quantity
Minimum 1
Minimum 1
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LM2830XQMF/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Tape & Reel (TR)
Series
-
Product Status
Active
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Adjustable
Number of Outputs
1
Voltage - Input (Min)
3V
Voltage - Input (Max)
5.5V
Voltage - Output (Min/Fixed)
0.6V
Voltage - Output (Max)
4.5V
Current - Output
1A
Frequency - Switching
1.6MHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Grade
Automotive
Qualification
AEC-Q100
Mounting Type
Surface Mount
Package / Case
SC-74A, SOT-753
Supplier Device Package
SOT-23-5
Base Product Number
LM2830
Datasheet & Documents
Manufacturer Product Page
LM2830XQMF/NOPB Specifications
HTML Datasheet
LM2830XQMF/NOPB-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
1 (Unlimited)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
-LM2830XQMF/NOPB-DG
-296-37371-1-DG
2156-LM2830XQMF/NOPB
296-37371-1
LM2830XQMF/NOPB-DG
LM2830XQMF-DG
LM2830XQMF
TEXTISLM2830XQMF/NOPB
296-37371-2
296-37371-6
Standard Package
1,000
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
좋은 품질과 가격으로 언제나 만족스럽게 이용하고 있습니다.
de desembre 02, 2025
Très content de mes achats, le prix était imbattable et le service après-vente a répondu à toutes mes questions rapidement.
de desembre 02, 2025
DiGi Electronics’ clear pricing policy provides great peace of mind.
de desembre 02, 2025
The environmentally friendly packaging was carefully designed, and shipping was swift and efficient.
de desembre 02, 2025
DiGi Electronics' packaging not only safeguarded the product perfectly but also reflected their dedication to aesthetic excellence.
de desembre 02, 2025
Overall, the combination of friendly customer service and quick logistics made my purchase very satisfying.
de desembre 02, 2025
Their packaging is always intact and well-protected, reducing damage during transit.
de desembre 02, 2025
Their commitment to reducing waste with eco packaging is inspiring.
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Frequently Asked Questions (FAQ)
When replacing a non-synchronous 1A buck converter like the LM2830XQMF/NOPB in an automotive infotainment design, what critical layout and thermal considerations should I check to avoid EMI failures or thermal shutdown?
For the LM2830XQMF/NOPB, the key layout risks in automotive applications (AEC-Q100) stem from its 1.6MHz switching frequency and non-synchronous topology. First, ensure the freewheeling Schottky diode (external) is placed within 5mm of the SW pin and GND plane to minimize loop inductance; a poor layout here causes high-frequency EMI that fails CISPR 25 testing. Second, the SOT-23-5 package dissipates heat primarily through the GND pin and PCB copper—use a 2oz copper pour of at least 1 square inch on the top layer connected to the exposed pad footprint, and add thermal vias to a bottom ground plane. Third, the input capacitor (ceramic, 10µF minimum) must sit as close as possible to VIN and GND pins to suppress voltage spikes from the 3V–5.5V automotive bus transients. Without these steps, junction temperature can exceed 125°C under 1A continuous load, triggering thermal shutdown despite the device's 125°C TJ rating.
When using the LM2830XQMF/NOPB to generate a 3.3V rail from a 5V supply for an FPGA core, how do I select the inductor and output capacitor to avoid output voltage ripple exceeding 50mV while maintaining stability across -40°C to 125°C?
For the LM2830XQMF/NOPB, targeting 3.3V output from 5V input at 1A, the 1.6MHz switching frequency allows a small inductor (1.0µH to 2.2µH). To keep ripple below 50mV, use a 2.2µH inductor with a saturation current >1.5A (e.g., Coilcraft XFL4020-222) to ensure peak current limit (1.5A typical) isn't triggered during startup. The output capacitor must have low ESR—use a 22µF X7R ceramic (10V rating) to maintain capacitance under DC bias and temperature; two 10µF in parallel reduce ESR further. Stability at temperature extremes requires checking the crossover frequency: with a 2.2µH inductor and 22µF output cap, the LM2830's internal compensation is stable across the full -40°C to 125°C range. However, avoid using Y5V or high-K dielectrics for the output cap—their capacitance can drop by 80% at 125°C, causing loop instability and increased ripple beyond 100mV.
Can the LM2830XQMF/NOPB directly replace the MIC2207YML in a 5V-to-1.2V DDR memory termination design without respinning the board, and what voltage accuracy trade-offs should I anticipate?
Direct replacement of the MIC2207YML (2A, 2MHz) with the LM2830XQMF/NOPB (1A, 1.6MHz) is not pin-to-pin compatible—the MIC2207YML is a 3mm×3mm MLF package with a different pinout and integrated synchronous FETs. For a board designed for the MIC2207, you must respin the layout. If you're evaluating an alternative design for a 1.2V rail at up to 1A, the LM2830XQMF/NOPB offers a simpler non-synchronous solution but requires an external Schottky diode (e.g., PMEG4010CEJ) adding BOM cost and 0.3V–0.4V drop in low-load efficiency. Voltage accuracy: the LM2830's reference voltage is 0.6V ±2% over temperature, so with 1% feedback resistors, total VOUT accuracy can reach ±3%, which may be marginal for DDR memory (typically ±2% requirement). To mitigate, use 0.1% resistors and ensure the feedback trace is short and routed away from the inductor to avoid noise injection, which can cause output jitter.
In a portable medical device with a 3.7V Li-ion battery input, how can I use the LM2830XQMF/NOPB to achieve a 3.3V output at 800mA while maintaining efficiency above 85% and minimizing shutdown leakage current?
For the LM2830XQMF/NOPB in a Li-ion application (3V–4.2V input to 3.3V output), the device operates in near-dropout conditions when battery voltage dips to 3.3V. At 3.3V input, the PMOS switch's 300mΩ typical RDS(on) causes a duty cycle near 100%, and efficiency drops to ~80% at 800mA. To maintain >85% efficiency across most of the battery range, optimize the inductor selection: use a 1.5µH inductor with <100mΩ DCR (e.g., TDK VLS6045EX-1R5) to minimize copper loss. The non-synchronous topology requires a Schottky diode with low forward voltage (e.g., 0.35V at 1A) and low junction capacitance (<50pF) to reduce switching losses at 1.6MHz. For shutdown (SHDN pin), the LM2830XQMF/NOPB draws only 0.1µA typical when SHDN is low (0.4V max), making it suitable for battery-powered devices. However, note that the SHDN pin has an internal 1MΩ pull-down—if driven by a high-impedance source, add a 10kΩ external pull-down to ensure the device doesn't partially enable during power-up transients.
When designing a 5V USB-powered point-of-load regulator with the LM2830XQMF/NOPB, how do I protect against inrush current and USB cable inductance-induced voltage spikes that could exceed the 6V absolute maximum on the VIN pin?
The LM2830XQMF/NOPB has an absolute maximum input voltage of 6V, but USB hot-plug events and cable inductance (typically 1µH–5µH for a 1m cable) can create voltage overshoots up to 7V when combined with ceramic input capacitors. To protect the device: (1) Add a 5.6V Zener diode (e.g., BZT52C5V6) in parallel with VIN and GND, placed immediately at the LM2830XQMF/NOPB's input pins. (2) Use a 2.2Ω series resistor (0603) in the USB 5V line, placed before the bulk input capacitor—this damps the LC resonance between the cable inductance and input capacitance without significantly affecting efficiency at 1A (220mV drop). (3) Choose a 22µF ceramic input capacitor with X7R dielectric and at least 10V rating, plus an additional 100µF electrolytic capacitor (low ESR) to absorb energy and reduce ringing. Without these measures, repetitive hot-plug events can stress the internal 6V-rated MOSFET, leading to latent damage or immediate failure, especially during high-temperature operation (125°C TJ).
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LM2830XQMF/NOPB CAD Models
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