My Inquiry
My Account
Texas Instruments LM5007SDX/NOPB
- Part No.:
- LM5007SDX/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-WDFN Exposed Pad
- Datasheet:
-
LM5007SDX/NOPB.pdf
- Description:
- IC REG BUCK ADJ 500MA 8WSON
- Quantity:
- Payment:
- Shipping:
Inventory:32,273
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LM5007SDX/NOPB from Texas Instruments is a 75-V input, 0.5-A synchronous buck DC/DC converter with integrated 80-V/0.7-A N-channel power MOSFET, adaptive constant-on-time (COT) control, 2.5-V precision reference, and internal 7-V VCC regulator. It operates from 9 V to 75 V input, delivers regulated output voltage via external resistor divider, and targets high-voltage post-regulation in telecom and automotive systems.
For engineers reviewing the LM5007SDX/NOPB datasheet, LM5007SDX/NOPB pinout, LM5007SDX/NOPB application, or LM5007SDX/NOPB equivalent, key selection criteria include input voltage range (9–75 V), integrated MOSFET RDS(on) (0.74 Ω typ), current limit threshold (725 mA typ), shutdown threshold (0.7 V), and thermal shutdown at 165 °C with 25 °C hysteresis.
Technical Context
The LM5007SDX/NOPB implements an adaptive constant-on-time (COT) control architecture where on-time is set by RON and inversely proportional to VIN, enabling near-constant switching frequency across line and load variations without loop compensation. Its hysteretic regulation compares FB voltage against a 2.5-V internal reference to trigger switch activation.
Current limiting uses an intelligent off-time generator whose duration scales inversely with FB voltage-17 µs at VFB = 0 V (short-circuit) down to 2.65 µs at VFB = 2.3 V-reducing foldback while maintaining inductor volt-second balance. Protection includes VCC UVLO (6.3 V), gate drive UVLO (4.5 V), and thermal shutdown with automatic recovery.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 9 V to 75 V - supports 12 V, 24 V, and 48 V industrial/automotive rails without pre-regulation. |
| Output Current | 0.5 A DC - maximum continuous load current under thermal limits in WSON-8 package. |
| Integrated MOSFET | 80 V / 0.7 A N-channel - eliminates external high-side switch; RDS(on) = 0.74 Ω typ enables low conduction loss. |
| Reference Voltage | 2.5 V ±20 mV - precise feedback threshold enabling accurate output voltage setting via resistor divider. |
| Switching Control | Adaptive COT - no compensation required; fast transient response; frequency remains stable across input/load changes. |
| Thermal Shutdown | 165 °C with 25 °C hysteresis - automatic recovery prevents latch-up during overload or poor heatsinking. |
| Shutdown Current | 100 µA - ultra-low quiescent draw when RON pulled below 0.7 V, suitable for battery-backed standby modes. |
Pinout & Package
LM5007SDX/NOPB is supplied in an 8-pin WSON package (4.00 mm × 4.00 mm) with exposed thermal pad bonded to GND. This thermally enhanced package achieves RθJB = 15.1 °C/W, enabling higher power density than the VSSOP variant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switching node | Power output of internal MOSFET; connects directly to LC filter inductor and external freewheeling diode cathode. |
| BST | Bootstrap capacitor input | Supplies floating gate drive voltage; requires 0.01 µF ceramic cap between BST and SW for high-side driver operation. |
| RCL | Current limit off-time programming | Sets variable off-time during overcurrent; tOFF = 10⁻⁵ / (0.59 + (VFB/7.22×10⁻⁶ × RCL)) - reduces foldback under partial overload. |
| RTN | Circuit ground | Power and signal return; must be connected to system GND and tied to exposed thermal pad in WSON package. |
| FB | Feedback input | Monitors output via resistor divider; comparator trips at 2.5 V; ripple ≥25 mV required for stable COT operation. |
| RON | On-time set / shutdown control | Resistor from VIN sets tON ∝ 1/VIN; pulling voltage <0.7 V disables switching and reduces ICC to 100 µA. |
| VCC | Internal bias regulator output | 7 V regulated supply for gate drive and logic; self-biased from VIN; max 10 mA load; disable via auxiliary >7 V supply. |
| VIN | Main input supply | High-voltage input (9–75 V); requires local 0.1 µF ceramic decoupling to RTN; absolute max 80 V. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive constant-on-time control | Eliminates need for external compensation components and enables sub-µs transient response without stability tuning. |
| Intelligent current limit off-timer | Off-time scales with VFB, delivering 17 µs during short-circuit but reducing to 2.65 µs at 2.3 V FB - minimizes output foldback and improves restart behavior. |
| Integrated 80-V/0.7-A N-MOSFET | Reduces BOM count and layout complexity; RDS(on) = 0.74 Ω typ ensures <370 mW conduction loss at 0.5 A. |
| Self-biasing VCC regulator | 7-V internal series regulator powers gate drive and logic from VIN; shuts down if auxiliary >7 V applied - cuts IC power dissipation in high-input scenarios. |
| Overvoltage protection | 2.875-V FB comparator immediately terminates on-time if output surges - safeguards downstream circuitry during line transients or load dump. |
Applications
| 48-V Automotive Power Bus | Telecom Secondary Regulator |
|---|---|
Use Scenario: Regulating 48-V battery rail to 3.3 V or 5 V for infotainment ECUs, ADAS sensors, or gateway modules. IC Role / Device Role / Timing Role: Primary non-isolated buck converter providing stable low-voltage supply with high input voltage tolerance and thermal robustness. Use Value: Eliminates need for pre-regulator stage; withstands load dump up to 80 V; thermal shutdown with hysteresis prevents fault propagation during sustained overloads. | Use Scenario: Post-regulating -48 V telecom rectified bus to 12 V or 5 V for line cards, optical modules, or management controllers. IC Role / Device Role / Timing Role: High-efficiency secondary DC/DC converter operating in discontinuous conduction mode (DCM) at light loads. Use Value: Maintains >85% efficiency at 10% load due to DCM operation; adaptive COT ensures fast response to burst traffic-induced load steps. |
| Industrial 24-V/48-V Field Power | High-Voltage IoT Sensor Node |
Use Scenario: Converting unregulated 24 V or 48 V factory floor supply to 3.3 V for PLC I/O modules, motor drivers, or HMI displays. IC Role / Device Role / Timing Role: Robust buck regulator handling wide input variation, EMI noise, and thermal stress in harsh environments. Use Value: VCC and gate-drive UVLO prevent erratic startup during brownouts; exposed thermal pad in WSON-8 enables reliable operation at 125 °C junction temperature. | Use Scenario: Powering ultra-low-power wireless sensor nodes from long-life LiSOCl₂ or primary lithium batteries boosted to 36 V+ via charge pump. IC Role / Device Role / Timing Role: High-input buck converter enabling single-cell-to-system conversion with minimal quiescent current. Use Value: 100 µA shutdown current extends battery life; minimum 1 mA load requirement satisfied via feedback divider design; no external bias needed. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164PWPR | Wider input range (3–100 V), higher output current (1 A), requires external MOSFETs; no integrated switch. | Used where higher power or input >75 V is needed; lacks integrated FET so needs more external components. | Select when >0.5 A output or >75 V input is required; not drop-in due to different pinout and external FET requirement. |
| TPS54060DGQR | Lower input range (3.5–60 V), integrated 0.5-A MOSFET, current-mode control (not COT), requires compensation. | Suitable for lower-voltage industrial supplies; slower transient response and added design complexity from loop compensation. | Choose for cost-sensitive 24-V systems where 60-V max input suffices; not pin-compatible and lacks adaptive COT benefits. |
Compared with LM5007SDX/NOPB, LM5164PWPR offers higher voltage headroom and current but increases BOM and layout effort, while TPS54060DGQR simplifies high-volume 24-V designs but sacrifices transient performance and adds compensation overhead.
Availability
LM5007SDX/NOPB is available at Aetrix Electronics and suitable for 48-V automotive power bus, telecom secondary regulation, and industrial field power applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LM5007SDX/NOPB 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
Texas Instruments is a global semiconductor leader designing analog ICs, embedded processors, and power management solutions for industrial, automotive, and communications markets.
The LM5007SDX/NOPB belongs to TI's high-voltage DC/DC converter product line, engineered specifically for efficient, compact, and robust step-down regulation from 9 V to 75 V inputs in space-constrained systems.
FAQ
What is the maximum input voltage rating for the LM5007SDX/NOPB?
The LM5007SDX/NOPB has an absolute maximum VIN-to-RTN rating of 80 V per the datasheet. Its recommended operating range is 9 V to 75 V. Exceeding 80 V risks permanent damage, and operation above 75 V is outside specified conditions-even briefly during load dump-requires external clamping or TVS protection to ensure reliability.
Does the LM5007SDX/NOPB require external compensation components?
No, the LM5007SDX/NOPB does not require external compensation components. Its adaptive constant-on-time (COT) control architecture eliminates the need for loop compensation, simplifying design and improving transient response. Stability is inherently maintained through the relationship between on-time, input voltage, and feedback ripple-provided the FB node has ≥25 mV of resistive ripple.
How does the current limit protection work in the LM5007SDX/NOPB?
The LM5007SDX/NOPB implements cycle-by-cycle current limiting with an intelligent off-time generator. When switch current exceeds 725 mA (typ), the on-time is terminated immediately. The subsequent off-time is programmable via RCL and scales inversely with FB voltage-from 17 µs at VFB = 0 V (short-circuit) down to 2.65 µs at VFB = 2.3 V-reducing foldback and improving overload recovery.
Can the LM5007SDX/NOPB operate with zero load current?
No, the LM5007SDX/NOPB requires a minimum load current of 1 mA to maintain stable operation. Below this level, the bootstrap capacitor may discharge during extended off-times, causing erratic switching or shutdown. To meet this requirement, feedback resistors must be selected such that VOUT/RFB1 + VOUT/RFB2 ≥ 1 mA at nominal output voltage.
What package type is used for the LM5007SDX/NOPB?
The LM5007SDX/NOPB is packaged in an 8-pin WSON (4.00 mm × 4.00 mm) with exposed thermal pad. This thermally enhanced package achieves RθJB = 15.1 °C/W-significantly better than the VSSOP option-and must have the EP soldered to a GND plane for optimal thermal performance and reliability at full 0.5-A load.
LM5007SDX/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-WDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 9V
- Voltage - Input (Max):
- 75V
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- 73V
- Current - Output:
- 500mA
- Frequency - Switching:
- -
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-WSON (4x4)
LM5007SDX/NOPB FAQ
1.How can I place an order for LM5007SDX/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5007SDX/NOPB 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 LM5007SDX/NOPB reliable?
The price and inventory of LM5007SDX/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5007SDX/NOPB is usually 5 days.
3.What payment methods are accepted for LM5007SDX/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5007SDX/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5007SDX/NOPB?
LM5007SDX/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5007SDX/NOPB 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 LM5007SDX/NOPB?
For technical support, including LM5007SDX/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5007SDX/NOPB requirements.
6.How does Aetrix verify that LM5007SDX/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5007SDX/NOPB 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 LM5007SDX/NOPB meets industry standards.
7.What is the process for return or replacement of LM5007SDX/NOPB?
All LM5007SDX/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5007SDX/NOPB, 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 LM5007SDX/NOPB part is unused and in its original packaging.
Return procedure for LM5007SDX/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LM5007SDX/NOPB Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
