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LM2593HVSX-5.0/NOPB
Texas Instruments
IC REG BUCK 5V 2A DDPAK
62472 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 2A TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
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5.0 / 5.0
- (507 Ratings)
LM2593HVSX-5.0/NOPB
Product Overview
1300130
DiGi Electronics Part Number
LM2593HVSX-5.0/NOPB-DGManufacturer
Texas Instruments
LM2593HVSX-5.0/NOPB
Description
IC REG BUCK 5V 2A DDPAKInventory
62472 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 2A TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Quantity
Minimum 1
Minimum 1
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LM2593HVSX-5.0/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Cut Tape (CT) & Digi-Reel®
Series
SIMPLE SWITCHER®
Product Status
Active
Function
Step-Down
Output Configuration
Positive
Topology
Buck
Output Type
Fixed
Number of Outputs
1
Voltage - Input (Min)
4.5V
Voltage - Input (Max)
60V
Voltage - Output (Min/Fixed)
5V
Voltage - Output (Max)
-
Current - Output
2A
Frequency - Switching
150kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
TO-263-8, D2PAK (7 Leads + Tab), TO-263CA
Supplier Device Package
TO-263 (DDPAK-7)
Base Product Number
LM2593
Datasheet & Documents
Manufacturer Product Page
LM2593HVSX-5.0/NOPB Specifications
HTML Datasheet
LM2593HVSX-5.0/NOPB-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
LM2593HVSX-5.0/NOPBDKR
LM2593HVSX-5.0/NOPBTR
LM2593HVSX-5.0/NOPBCT
LM2593HVSX50NOPB
Standard Package
500
Alternative Parts
PART NUMBER
MANUFACTURER
QUANTITY AVAILABLE
DiGi PART NUMBER
UNIT PRICE
SUBSTITUTE TYPE
Reviews
5.0/5.0-(Show up to 5 Ratings)
de desembre 02, 2025
品質の良さに満足しています。いつも安心して購入できる信頼できるショップです。
de desembre 02, 2025
They handled my special requests with care and promptness.
de desembre 02, 2025
Shipping was very quick, and the support team was very helpful.
de desembre 02, 2025
Pricing is very reasonable, especially considering the premium feel and durability of the items.
de desembre 02, 2025
Their quick delivery times are fantastic, and the resilience of their products ensures long-term satisfaction.
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Frequently Asked Questions (FAQ)
Can the LM2593HVSX-5.0/NOPB be safely used as a drop-in replacement for an LM2596-5.0 in a 24V-to-5V industrial control board, and what layout or thermal risks should I watch for?
The LM2593HVSX-5.0/NOPB can replace the LM2596-5.0 in many 24V-to-5V applications due to its higher 60V input rating and similar 2A output capability, but it is not a true drop-in due to differences in switching frequency (150kHz vs. 150kHz nominal—but internal timing and compensation vary) and package thermal characteristics. The LM2593HVSX-5.0/NOPB uses a 7-lead DDPAK (TO-263-8) with a central thermal tab, requiring a solid ground plane and adequate copper pour for heat dissipation. Unlike the LM2596, which may rely more on external snubbers, the LM2593HVSX-5.0/NOPB demands strict adherence to high-di/dt loop minimization—especially the input capacitor, IC, and diode path—to avoid EMI and voltage spikes. Always verify startup behavior under full load, as the LM2593 has a slightly different soft-start profile that may affect inrush current in capacitive loads.
What are the key reliability concerns when operating the LM2593HVSX-5.0/NOPB near its 60V maximum input voltage in an automotive environment with load-dump transients?
Operating the LM2593HVSX-5.0/NOPB at or near 60V input in automotive applications introduces significant reliability risks due to voltage transients like ISO 7637-2 load dumps, which can exceed 70V. While the part is rated for 60V continuous, sustained operation above 55V increases stress on the internal power switch and reduces margin for transient spikes. To mitigate this, use a TVS diode (e.g., SMAJ58A) rated for 58V clamping voltage placed close to the input capacitor, and ensure your input bulk capacitance (≥100µF low-ESR electrolytic or polymer) can handle energy absorption. Additionally, derate the input voltage to ≤50V in harsh environments and monitor junction temperature—thermal runaway risk increases sharply near max Vin due to higher switching losses and reduced efficiency. Always validate with real-world transient testing.
How does the LM2593HVSX-5.0/NOPB compare to the newer TPS54360DDAR for a 48V-to-5V, 2A industrial power supply, and when should I consider upgrading?
The LM2593HVSX-5.0/NOPB is a legacy SIMPLE SWITCHER with proven reliability but lower efficiency (~75–80%) at 48V input compared to the TPS54360DDAR (~88–92%), which uses synchronous rectification and operates at 500kHz. For new designs, the TPS54360DDAR reduces thermal stress, allows smaller magnetics, and supports higher switching frequencies for compact layouts. However, the LM2593HVSX-5.0/NOPB remains preferable in noise-sensitive analog systems due to its lower EMI profile and simpler compensation. Upgrade to the TPS54360DDAR if board space, thermal management, or efficiency are critical—but only after evaluating control loop stability, as the TPS54360 requires external compensation and careful PCB layout. The LM2593HVSX-5.0/NOPB is still a robust choice for cost-sensitive, low-complexity designs where efficiency is secondary to design simplicity.
What PCB layout practices are critical to prevent oscillation or premature failure in a high-current (2A) application using the LM2593HVSX-5.0/NOPB?
To ensure stable operation of the LM2593HVSX-5.0/NOPB at 2A output, minimize the high-current switching loop formed by the input capacitor, IC VIN pin, internal switch, inductor, and ground return. Use a single-point ground connection between the input capacitor ground, output capacitor ground, and the tab/thermal pad (connected to system ground via multiple vias). Place the input ceramic capacitor (≥10µF, X7R) within 5mm of the VIN and GND pins to suppress high-frequency noise. Avoid routing sensitive feedback traces near the inductor or diode; instead, run the feedback (FB) trace directly from the output capacitor to the FB pin with a small RC filter (e.g., 1kΩ + 1nF) if needed. Poor layout can cause sub-harmonic oscillation, excessive ringing, or false triggering—always prototype and probe the SW node with a short ground spring to validate waveform integrity.
Can the LM2593HVSX-5.0/NOPB support a startup sequence where the input voltage ramps from 0V to 48V in under 10ms, and what inrush current mitigation is needed?
The LM2593HVSX-5.0/NOPB can handle fast input voltage ramps (e.g., 0V to 48V in <10ms), but inrush current from charging large input/output capacitors may exceed safe limits and trigger overcurrent protection or damage the internal switch. The part lacks soft-start control (unlike newer PMICs), so inrush is limited only by external components. To mitigate this, add a series NTC thermistor (e.g., CL-31) at the input or use a pre-charge circuit with a MOSFET and current-limiting resistor. Ensure the input capacitor bank’s total capacitance is ≤220µF unless inrush control is implemented—higher values risk exceeding the peak current rating during startup. Also, verify that your upstream supply can handle the transient load; a stiff 48V source with low output impedance is essential to avoid voltage droop that could cause the LM2593HVSX-5.0/NOPB to restart repeatedly.
Quality Assurance (QC)
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LM2593HVSX-5.0/NOPB CAD Models
Texas Instruments LM2593HVSX-5.0/NOPB PCB symbols & footprints
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