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LM2597HVM-5.0/NOPB
Texas Instruments
IC REG BUCK 5V 500MA 8SOIC
1986 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 500mA 8-SOIC (0.154", 3.90mm Width)
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5.0 / 5.0
- (311 Ratings)
LM2597HVM-5.0/NOPB
Product Overview
1276166
DiGi Electronics Part Number
LM2597HVM-5.0/NOPB-DGManufacturer
Texas Instruments
LM2597HVM-5.0/NOPB
Description
IC REG BUCK 5V 500MA 8SOICInventory
1986 Pcs New Original In Stock
Buck Switching Regulator IC Positive Fixed 5V 1 Output 500mA 8-SOIC (0.154", 3.90mm Width)
Quantity
Minimum 1
Minimum 1
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LM2597HVM-5.0/NOPB Technical Specifications
Category
Power Management (PMIC), Voltage Regulators - DC DC Switching Regulators
Packaging
Tube
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
500mA
Frequency - Switching
150kHz
Synchronous Rectifier
No
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width)
Supplier Device Package
8-SOIC
Base Product Number
LM2597
Datasheet & Documents
Manufacturer Product Page
LM2597HVM-5.0/NOPB Specifications
HTML Datasheet
LM2597HVM-5.0/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
*LM2597HVM-5.0/NOPB
-LM2597HVM-5.0/NOPB-DG
LM2597HVM-5.0-NDR
LM2597HVM50NOPB
NATNSCLM2597HVM-5.0/NOPB
2156-LM2597HVM-5.0/NOPB-TI
-LM2597HVM
Standard Package
95
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
J'ai toujours reçu un accompagnement professionnel et attentionné de leur équipe de support.
de desembre 02, 2025
DiGi Electronics provides excellent value through their competitive pricing and reliable quality.
de desembre 02, 2025
Their rapid dispatch process allows me to get parts needed on short notice, which is invaluable for emergency repairs.
de desembre 02, 2025
The shipment arrived ahead of schedule, and the overall quality feels very professional and well thought out.
de desembre 02, 2025
DiGi Electronics provides a vast array of options, making it easier for consumers to find suitable products.
de desembre 02, 2025
Shipping times are consistently short, and customer support is always approachable.
de desembre 02, 2025
I trust DiGi Electronics to provide quality without breaking the bank.
de desembre 02, 2025
My shipping experience was outstanding; the package arrived in perfect condition and on schedule.
de desembre 02, 2025
Customers can rely on DiGi Electronics for durable and reliable electronic solutions.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the LM2597HVM-5.0/NOPB in a high-input-voltage industrial application, and how can they be mitigated?
When integrating the LM2597HVM-5.0/NOPB in industrial systems where input voltage can approach 60V, a major risk is thermal overload due to high dropout conditions (e.g., stepping down from 48V to 5V). Since the device is not synchronous and uses an internal switch with limited current capability, power dissipation increases quadratically with input voltage. To mitigate, ensure proper PCB copper layout for thermal dissipation—use multiple thermal vias to inner ground planes and keep switching loop area small. Additionally, operate within the 150kHz switching frequency to minimize switching losses, and consider input filtering to reduce voltage transients that could exceed the 60V absolute maximum. Always verify thermal performance under full load and worst-case ambient conditions up to 125°C junction temperature.
How does the LM2597HVM-5.0/NOPB compare to the LM2596-5.0 in terms of reliability and load regulation in automotive environments with wide temperature swings?
The LM2597HVM-5.0/NOPB offers improved input voltage headroom (up to 60V vs. 45V on LM2596-5.0), making it more suitable for automotive load dump conditions. Both are non-synchronous buck regulators with fixed 5V output and similar 500mA current ratings, but the LM2597HVM-5.0/NOPB is specified for operation up to 125°C junction temperature, providing better thermal resilience. However, due to its non-synchronous design, efficiency drops under light loads compared to newer synchronous alternatives. For automotive designs expecting cold cranking or thermal cycling, ensure solid output capacitance (low-ESR electrolytic or polymer) to maintain regulation during line transients, and verify start-up behavior at 4.5V minimum input to avoid brown-out issues.
Can the LM2597HVM-5.0/NOPB be used as a drop-in replacement for the MC34063A in a legacy 5V, 300mA power stage, and what layout changes are required?
While the LM2597HVM-5.0/NOPB can replace the MC34063A in a 5V, 300mA application, it is not a pin-to-pin or circuit-equivalent drop-in. The LM2597HVM-5.0/NOPB integrates the power switch and requires simpler external components (inductor, diode, output capacitor, input capacitor), whereas the MC34063A needs external switching transistors and more passive components. Key layout changes include redesigning the power path: place a 100µH power inductor close to the SW pin, use a Schottky diode (e.g., 1N5819) from SW to GND, and maintain short, wide traces for high-current paths to reduce EMI. Also, bypass VIN and GND with low-ESR ceramics (≥10µF). The reduced component count improves reliability, but thermal management remains critical due to higher dissipation at elevated inputs.
What are the critical layout guidelines for minimizing EMI when designing with the LM2597HVM-5.0/NOPB in noise-sensitive medical or measurement equipment?
To minimize EMI in sensitive applications using the LM2597HVM-5.0/NOPB, focus on reducing high di/dt loop areas. Keep the input capacitor (≥10µF ceramic) as close as possible between VIN and GND pins, and connect directly to a solid ground plane. Route the switch node (SW) with minimal length to the catch diode and inductor to reduce radiated noise. Use a ground-filled top layer around the SW trace, avoiding breaks in the ground plane underneath. Choose a shielded inductor (e.g., 33–100µH, 600mA+ saturation current) and place it away from sensitive analog traces. Adding a small RC snubber (e.g., 10Ω + 100pF) across the diode may dampen ringing. Although the 150kHz fixed frequency simplifies filtering, ensure switching noise does not alias into measurement bandwidths.
What long-term reliability concerns should be considered when the LM2597HVM-5.0/NOPB operates continuously at full 500mA load in a sealed enclosure?
Operating the LM2597HVM-5.0/NOPB at full 500mA load in a sealed enclosure risks premature failure due to thermal buildup. Without proper convection or heatsinking, junction temperature can exceed 125°C, especially with input voltages above 24V. The non-synchronous topology has higher conduction and switching losses, increasing thermal stress on the die and package. To enhance reliability, limit long-term load to 70–80% of rated current (350–400mA), use 2–4 internal PCB layers tied to GND for heat spreading, and select capacitors rated for 105°C or higher. Monitor actual junction temperature with thermal imaging or IR testing during qualification. For mission-critical systems, consider a derated design or migrate to a synchronous alternative with better efficiency in similar packages.
Quality Assurance (QC)
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LM2597HVM-5.0/NOPB CAD Models
Texas Instruments LM2597HVM-5.0/NOPB PCB symbols & footprints
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