Specifications
| Type | Description |
|---|---|
| Part Number | LMR14030 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | DDA (HSOIC, 8) 4.9 mm x 6 mm with PowerPAD |
| Component Type | Power_IC |
| Input Voltage Range | 4 to 40 V |
| Continuous Output Current | 3.5 A |
| Operating Quiescent Current | 40 uA |
| Shutdown Current | 1 uA typ, 3 uA max |
| High-Side MOSFET On-Resistance | 90 mOhm typ, 180 mOhm max |
| Minimum Switch-On Time | 75 ns typ |
| Switching Frequency Range | 200 to 2500 kHz |
| SYNC Switching Frequency Range | 250 to 2300 kHz |
| Switching Frequency | 400 kHz min, 500 kHz typ, 600 kHz max |
| Output Voltage Range | 0.8 to 28 V |
| Feedback Voltage | 0.744 V min, 0.750 V typ, 0.756 V max |
| Feedback Voltage | 0.735 V min, 0.750 V typ, 0.765 V max |
| Current Limit | 4.4 A min, 5.5 A typ, 6.6 A max |
| UVLO Rising Threshold | 3.5 V min, 3.7 V typ, 3.9 V max |
| UVLO Hysteresis | 285 mV typ |
| Enable Threshold Voltage | 1.05 V min, 1.20 V typ, 1.38 V max |
| EN Pin Current | -4.6 uA typ |
| EN Pin Current | -1.0 uA typ |
| EN Hysteresis Current | -3.6 uA typ |
| SS Pin Current | 3 uA typ |
| Thermal Shutdown Threshold | 170°C typ |
| Thermal Shutdown Hysteresis | 12°C typ |
| Maximum Duty Cycle | 97% typ |
| SYNC Clock High-Level Threshold | 1.7 V typ |
| SYNC Clock Low-Level Threshold | 0.5 V typ |
| Minimum SYNC Input Pulse Width | 30 ns typ |
| PLL Lock-In Time | 100 us typ |
| Operating Junction Temperature | -40 to 125°C |
| Absolute Maximum VIN and EN Voltage | -0.3 to 44 V |
| Absolute Maximum BOOT Voltage | -0.3 to 49 V |
| Absolute Maximum SW Voltage | -3 to 44 V |
| Absolute Maximum BOOT-to-SW Voltage | 5.5 V max |
| Junction-to-Ambient Thermal Resistance | 43.2°C/W |
| Junction-to-Case Bottom Thermal Resistance | 7.8°C/W |
| ESD Rating HBM | 2 kV |
| ESD Rating CDM | 0.5 kV |
| Datasheet Status | request_only |
Product Overview
The LMR14030 is a Texas Instruments step-down switching regulator for Power_Management designs requiring conversion from a 4 to 40 V operating input range. It provides up to 3.5 A maximum continuous load current and supports an output voltage range of 0.8 to 28 V under the recommended operating conditions.
Frequency control is specified for both RT and SYNC operation. RT mode supports 200 to 2500 kHz, while SYNC mode supports 250 to 2300 kHz. With RT = 49.9 kOhm at 1% accuracy, switching frequency is specified as 400 kHz minimum, 500 kHz typical, and 600 kHz maximum. The device also specifies 75 ns typical minimum switch-on time and 97% typical maximum duty cycle at 200 kHz.
The device is offered in a DDA HSOIC 8-pin 4.9 mm x 6 mm package with PowerPAD. Thermal data includes 43.2°C/W junction-to-ambient resistance and 7.8°C/W junction-to-case bottom resistance. Protection and interface specifications include VIN UVLO, enable threshold limits, soft-start pin current, current limit, thermal shutdown, and SYNC input thresholds.
Key Features
- 4 to 40 V operating input voltage range
- 3.5 A maximum continuous load current
- 0.8 to 28 V recommended output voltage range
- 200 to 2500 kHz RT-mode switching frequency
- 250 to 2300 kHz SYNC-mode switching frequency
- 40 uA operating quiescent current in non-switching sleep mode
- 1 uA typical shutdown current at VEN = 0 V
- 90 mOhm typical high-side MOSFET on-resistance
- 75 ns typical minimum switch-on time
- -40 to 125°C operating junction temperature
Typical Applications
- Step-down power conversion
- Adjustable output voltage rails
- Synchronized switching regulator designs
- Wide-input Power_Management rails
- Thermally managed HSOIC assemblies
- Enable-controlled power supplies
- Soft-start regulated outputs
Procurement Notes
When requesting a quote for LMR14030, 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 LMR14030 support?
LMR14030 supports a 4 to 40 V operating input voltage range. Its absolute maximum VIN and EN voltage rating is -0.3 to 44 V referenced to GND.
What output current is specified for LMR14030?
The maximum continuous load current is specified as 3.5 A. The current limit is specified as 4.4 A minimum, 5.5 A typical, and 6.6 A maximum at VIN = 12 V and TA = 25°C.
What switching frequency ranges are available?
RT mode supports a 200 to 2500 kHz switching frequency range. SYNC mode supports 250 to 2300 kHz, and with RT = 49.9 kOhm the switching frequency is 500 kHz typical.
What package is used for the LMR14030?
LMR14030 is listed in the DDA HSOIC 8-pin package, measuring 4.9 mm x 6 mm with PowerPAD. Thermal resistance values include 43.2°C/W junction-to-ambient and 7.8°C/W junction-to-case bottom.
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.