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Texas Instruments LM5007MM/NOPB
- Part No.:
- LM5007MM/NOPB
- Manufacturer:
- Texas Instruments
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LM5007MM/NOPB.pdf
- Description:
- IC REG BUCK ADJ 500MA 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:678
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Product details
Overview
LM5007MM/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, and 2.5-V precision feedback reference. It operates from 9 V to 75 V input, delivers regulated output voltage via external resistor divider, and targets high-voltage post-regulation in 48-V automotive and telecom systems.
For engineers reviewing the LM5007MM/NOPB datasheet, LM5007MM/NOPB pinout, LM5007MM/NOPB application, or LM5007MM/NOPB equivalent, key selection criteria include its VIN range (9–75 V), integrated high-voltage switch, no-loop-compensation COT architecture, thermal shutdown with hysteresis, and dual-package availability (VSSOP-8/WSON-8).
Technical Context
The LM5007MM/NOPB implements an adaptive constant-on-time (COT) control scheme where on-time is inversely proportional to VIN and set by RON, enabling near-constant switching frequency across line and load variations. Its hysteretic regulation compares FB voltage against a 2.5-V internal reference to trigger fixed on-time pulses without requiring external loop compensation.
Current limiting uses an intelligent off-time generator whose duration scales inversely with FB voltage - preset to 17 µs at VFB = 0 V (short-circuit) and reduced under partial overload - minimizing foldback while maintaining volt-second balance. Protection includes VCC and gate-drive UVLO, thermal shutdown at 165°C with 25°C hysteresis, and overvoltage detection at 2.875 V on FB.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 9 V to 75 V - supports direct connection to unregulated 12-V, 24-V, and 48-V rails without pre-regulation. |
| Output Current | 0.5 A DC - maximum continuous load current with thermal derating above 125°C junction temperature. |
| Integrated Switch | 80-V, 0.7-A N-channel MOSFET - eliminates external high-side switch and reduces BOM count and layout complexity. |
| Feedback Reference | 2.5 V ±1.5% - enables precise output voltage setting via external resistor divider with minimal drift. |
| Control Architecture | Adaptive COT - provides ultra-fast transient response and eliminates need for external compensation network. |
| Quiescent Current | 675 µA typical - ensures low standby power draw in always-on systems such as automotive infotainment. |
| Shutdown Threshold | 0.7 V rising on RON pin - allows clean enable/disable control with standard logic-level signals. |
Pinout & Package
LM5007MM/NOPB is available in 8-pin VSSOP (DGK) package, 3.00 mm × 3.00 mm body size, with exposed thermal pad internally connected to die substrate. Pinout optimized for minimal trace inductance and thermal performance in high-voltage buck layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW | Switching node | Power switching output connected to LC filter; carries pulsed high-current waveform and requires low-inductance routing. |
| BST | Bootstrap capacitor input | Supplies gate drive voltage for internal N-MOSFET; requires 0.01-µF ceramic cap between BST and SW for proper high-side driver operation. |
| RCL | Current limit off-time programming | Sets intelligent foldback-free overcurrent protection timing; off-time decreases as FB voltage rises during overload. |
| RTN | Circuit ground | Reference return for all analog and power circuits; must be low-impedance connection to minimize noise coupling. |
| FB | Feedback input | Connects to resistor divider from VOUT; senses regulated output with 2.5-V internal reference threshold. |
| RON | On-time set / shutdown control | Resistor from VIN sets on-time inversely proportional to input voltage; pulled below 0.7 V to enter low-IQ shutdown mode. |
| VCC | Internal bias regulator output | 7-V regulated supply for gate drive and control logic; can be externally biased above 7 V to reduce IC power dissipation. |
| VIN | Main input supply | Accepts 9–75 V DC; requires local 0.1-µF ceramic decoupling capacitor close to pin for stability and EMI suppression. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 80-V/0.7-A N-MOSFET | Reduces external component count and PCB area; eliminates gate driver design and layout challenges for high-voltage buck topologies. |
| No-loop-compensation COT control | Enables stable operation with wide-range output capacitors (including low-ESR ceramics); cuts design time and validation effort. |
| Intelligent current limit with VFB-scaled off-time | Maintains higher output current during partial overloads versus fixed off-time schemes, improving system fault tolerance. |
| VCC and gate-drive UVLO protection | Prevents erratic switching during brown-out conditions; ensures reliable startup and shutdown sequencing across full input range. |
| Thermal shutdown with 25°C hysteresis | Allows automatic recovery after cooling, avoiding latching faults and supporting robust operation in enclosed or high-ambient environments. |
Applications
| 48-V Automotive Power Distribution | Industrial Telecom Power Supply |
|---|---|
Use Scenario: Regulating 48-V battery rail to 3.3 V or 5 V for ADAS sensors, infotainment processors, and CAN transceivers. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator providing stable, low-noise intermediate bus voltage with fast load-step response. Use Value: Enables direct 48-V-to-low-V conversion without pre-regulator stage, reducing system cost and footprint while meeting automotive temperature (-40°C to +125°C) requirements. | Use Scenario: Post-regulating 54-V telecom rectified bus to 12 V for line card peripherals and management controllers. IC Role / Device Role / Timing Role: High-input-voltage secondary regulator delivering tightly regulated output with minimal external components. Use Value: Supports high-efficiency DCM operation at light loads and maintains >90% efficiency at full 0.5-A load, critical for energy-constrained telecom infrastructure. |
| Smart Building HVAC Controller | Industrial IoT Gateway Power |
Use Scenario: Converting 24-V or 48-V PoE++ or building automation bus to 3.3 V for microcontrollers and wireless SoCs. IC Role / Device Role / Timing Role: Compact, thermally efficient buck converter powering mixed-signal control subsystems in space-constrained enclosures. Use Value: WSON-8 package option provides superior thermal resistance (RθJB = 15.1°C/W), enabling reliable operation without heatsinks in sealed HVAC units. | Use Scenario: Powering edge AI accelerators and LPWAN radios from 12-V or 24-V industrial field buses. IC Role / Device Role / Timing Role: High-voltage input DC/DC stage delivering low-noise, ripple-controlled output for sensitive RF and sensor interfaces. Use Value: Adaptive COT control ensures <10-µs transient recovery from 50% load steps, preserving signal integrity in real-time industrial networking applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5008MM/NOPB | Same architecture but rated for 100-V input (9–100 V); higher RDS(on) (1.2 Ω vs. 0.74 Ω typ); identical pinout and control features. | Required where input transients exceed 75 V or long-term reliability at >75 V is mandated (e.g., railway or heavy equipment). | Select LM5008MM/NOPB only if absolute maximum input exceeds 75 V; otherwise LM5007MM/NOPB offers lower conduction loss and better efficiency at ≤75 V. |
| TPS54060DGQR | 60-V max input; integrated 0.5-A MOSFET; current-mode control with external compensation; different pinout and feature set (no RCL, no adaptive off-time). | Suitable for cost-sensitive designs where 60-V input ceiling is acceptable and loop tuning is acceptable. | Choose TPS54060DGQR when lower VIN range suffices and design team prefers traditional current-mode control with known compensation methodology. |
Compared with LM5008MM/NOPB, LM5007MM/NOPB delivers lower conduction loss and higher efficiency below 75 V; compared with TPS54060DGQR, it eliminates compensation design effort and improves transient response, but requires attention to FB ripple configuration for stability.
Availability
LM5007MM/NOPB is available at Aetrix Electronics and suitable for 48-V automotive power distribution, industrial telecom power supplies, and smart building HVAC controllers requiring stable component supply and long-lifecycle support.
Supply support for LM5007MM/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 company headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and communications markets.
The LM5007MM/NOPB belongs to TI's high-voltage DC/DC converter product line, engineered specifically for simple, compact, and robust non-isolated buck regulation in systems with 9–75 V input rails and moderate output current demands.
FAQ
What is the maximum input voltage rating for LM5007MM/NOPB?
The LM5007MM/NOPB has an absolute maximum input voltage rating of 80 V (VIN to RTN), with recommended operating range from 9 V to 75 V. Operation beyond 75 V may cause premature device stress or failure, and the internal 80-V MOSFET breakdown voltage is specified at 76 V over full temperature range. Always maintain ≥5-V margin below 80 V for reliability in transient-heavy environments.
Does LM5007MM/NOPB require external compensation components?
No, the LM5007MM/NOPB uses adaptive constant-on-time (COT) control and does not require external compensation components. Its hysteretic regulation compares FB voltage to a 2.5-V internal reference and triggers fixed-duration on-pulses - eliminating the need for error amplifiers, compensation networks, or phase-margin analysis. This simplifies design and improves transient response.
How is output voltage programmed on LM5007MM/NOPB?
Output voltage on LM5007MM/NOPB is programmed using two external resistors (RFB1 and RFB2) forming a voltage divider from VOUT to RTN, with the FB pin connected to their junction. The internal 2.5-V reference determines regulation point: VOUT = 2.5 V × (1 + RFB1/RFB2). Resistor values must ensure ≥1 mA minimum load current to maintain bootstrap capacitor charge and stable operation.
What package options are available for LM5007MM/NOPB?
The LM5007MM/NOPB is offered in two RoHS-compliant packages: 8-pin VSSOP (DGK, 3.00 mm × 3.00 mm) and 8-pin WSON (NGT, 4.00 mm × 4.00 mm with exposed thermal pad). Both share identical pinout and electrical specifications; WSON provides significantly lower thermal resistance (RθJB = 15.1°C/W vs. 78.5°C/W for VSSOP), making it preferred for high-power-density or thermally constrained applications.
Can LM5007MM/NOPB operate in discontinuous conduction mode (DCM)?
Yes, the LM5007MM/NOPB automatically operates in discontinuous conduction mode (DCM) at light loads and transitions to continuous conduction mode (CCM) at heavier loads. In DCM, inductor current falls to zero each cycle, reducing switching losses and maintaining high efficiency (>85%) even at 10-mA loads - ideal for always-on industrial and automotive subsystems with variable duty cycles.
LM5007MM/NOPB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- 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-VSSOP
LM5007MM/NOPB FAQ
1.How can I place an order for LM5007MM/NOPB through Aetrix?
Please submit a Request for Quotation (RFQ) for LM5007MM/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 LM5007MM/NOPB reliable?
The price and inventory of LM5007MM/NOPB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LM5007MM/NOPB is usually 5 days.
3.What payment methods are accepted for LM5007MM/NOPB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LM5007MM/NOPB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LM5007MM/NOPB?
LM5007MM/NOPB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LM5007MM/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 LM5007MM/NOPB?
For technical support, including LM5007MM/NOPB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LM5007MM/NOPB requirements.
6.How does Aetrix verify that LM5007MM/NOPB is sourced from the original manufacturer or authorized distributors?
All LM5007MM/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 LM5007MM/NOPB meets industry standards.
7.What is the process for return or replacement of LM5007MM/NOPB?
All LM5007MM/NOPB units undergo pre-shipment inspection (PSI). If there is an issue with LM5007MM/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 LM5007MM/NOPB part is unused and in its original packaging.
Return procedure for LM5007MM/NOPB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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