Specifications
| Type | Description |
|---|---|
| Part Number | LM5160 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | 12-pin WSON with exposed thermal pad, 4.00 mm x 4.00 mm nominal body |
| Input Voltage Range | 4.5-65 V |
| Maximum Load Current | 2 A |
| Converter Topology | Synchronous step-down buck / Fly-Buck |
| High-Side Switch | Integrated MOSFET |
| Low-Side Switch | Integrated MOSFET |
| External Schottky Diode Requirement | Not required |
| Control Method | Adaptive constant on-time control |
| Switching Frequency Adjustment | Resistor adjustable up to 1 MHz |
| Feedback Voltage Reference Accuracy | ±1% |
| Soft-Start | Programmable |
| Start-Up Capability | Prebiased start-up supported |
| Operating Modes | Forced PWM or DCM selectable |
| FPWM Pin Low Function | Discontinuous conduction mode at light loads |
| FPWM Pin High Function | Continuous conduction mode at all loads and Fly-Buck configuration |
| External Bias Supply Support | Supported on LM5160A |
| Protection Features | Peak current limit, valley current limit, UVLO, VCC/gate-drive UVLO, thermal shutdown |
| VIN to AGND Absolute Maximum | -0.3 to 70 V |
| EN/UVLO to AGND Absolute Maximum | -0.3 to 70 V |
| RON to AGND Absolute Maximum | -0.3 to 70 V |
| BST to AGND Absolute Maximum | -0.3 to 84 V |
| VCC to AGND Absolute Maximum | -0.3 to 14 V |
| FPWM to AGND Absolute Maximum | -0.3 to 14 V |
| SS to AGND Absolute Maximum | -0.3 to 7 V |
| FB to AGND Absolute Maximum | -0.3 to 7 V |
| BST to SW Absolute Maximum | -0.3 to 14 V |
| BST to VCC Absolute Maximum | 70 V |
| SW to AGND Absolute Maximum | -1.5 to 70 V |
| SW to AGND Transient Absolute Maximum | -3 V |
| Operating Junction Temperature Absolute Maximum | -40 to 150 °C |
| Storage Temperature | -65 to 150 °C |
| Datasheet Status | request_only |
Product Overview
The LM5160 is a Texas Instruments Power_Management IC for synchronous step-down buck and Fly-Buck conversion. It uses integrated high-side and low-side MOSFETs, including an internal low-side synchronous rectifier, and therefore does not require an external Schottky diode for synchronous rectification. The operating input range is 4.5-65 V, with maximum load current specified at 2 A.
Control is based on adaptive constant on-time operation, and no external loop compensation is required. Switching frequency is programmed by the RON resistor and is adjustable up to 1 MHz. The feedback voltage reference accuracy is specified at ±1% over the entire operating temperature range.
The device is supplied in a 12-pin WSON package with exposed thermal pad and 4.00 mm x 4.00 mm nominal body. Programmable soft-start is set by a capacitor from SS to AGND. The FPWM pin selects discontinuous conduction mode at light loads when connected to AGND, or continuous conduction mode at all loads and Fly-Buck configuration when connected to VCC.
Key Features
- 4.5-65 V operating input voltage range
- 2 A maximum load current capability
- Synchronous buck and Fly-Buck converter topology
- Integrated high-side and low-side MOSFET switches
- External Schottky diode not required
- Adaptive constant on-time control method
- RON resistor adjustable switching frequency up to 1 MHz
- ±1% feedback voltage reference accuracy
- Programmable soft-start using SS-to-AGND capacitor
- Selectable forced PWM or DCM operating modes
- Prebiased start-up supported
- Current limits, UVLO, and thermal shutdown protection
Typical Applications
- Synchronous step-down buck conversion
- Fly-Buck converter designs
- 4.5-65 V input power rails
- 2 A load current rails
- Prebiased output start-up systems
- Light-load DCM power stages
- Forced PWM power stages
- Externally biased LM5160A designs
Procurement Notes
When requesting a quote for LM5160, buyers should confirm the manufacturer, package or case, required quantity, target date code, compliance documents, packing method, destination country and expected delivery schedule.
If alternatives are acceptable, buyers should share the approved vendor list, required electrical or optical limits, package constraints and qualification requirements. Any alternative part should be reviewed by the buyer's engineering team before production use.
For power IC and power device sourcing, voltage rating, current rating, power dissipation, package thermal performance, protection features, qualification grade and application conditions should be reviewed before approval.
FAQ
What input voltage range does the LM5160 support?
The LM5160 supports an operating input voltage range of 4.5-65 V. Its VIN to AGND absolute maximum rating is -0.3 to 70 V, based on the extracted datasheet limits.
Does the LM5160 require an external Schottky diode?
No. The LM5160 integrates both the high-side MOSFET and the low-side synchronous rectifier MOSFET, so an external Schottky diode is not required for its synchronous rectification function.
How are LM5160 operating modes selected?
Operating mode is selected through the FPWM pin. Connecting FPWM to AGND enables discontinuous conduction mode at light loads, while connecting FPWM to VCC enables continuous conduction mode at all loads and Fly-Buck configuration.
What package is specified for the LM5160?
The LM5160 is specified in a 12-pin WSON package with an exposed thermal pad. The nominal body size is 4.00 mm x 4.00 mm.
Technical Review & Sourcing Note
Prepared by LDeepAI Component Sourcing Team. Reviewed for RFQ, documentation and alternative sourcing use. Last updated: June 30, 2026.
This page is based on manufacturer datasheet information and LDeepAI sourcing review. Specifications should be verified against the official manufacturer datasheet before final procurement or design approval. Final electrical, optical and reliability approval should be confirmed by the buyer's engineering team.