Specifications
| Type | Description |
|---|---|
| Part Number | LM5165 |
| Manufacturer | Texas Instruments |
| Product Type | LDO Regulator |
| Category | Power Management |
| Package / Case | DRC 10-pin VSON, 3 mm x 3 mm, 0.5-mm pin pitch, exposed thermal pad; VSSOP-10 also mentioned |
| Component Type | Power_IC |
| Input Voltage Range | 3 to 65 V; recommended operating conditions |
| Output Current | 0 to 150 mA; COT mode, recommended operating conditions |
| Output Current | 0 to 100 mA; PFM mode, recommended operating conditions |
| No-Load Quiescent Current | 10.5 uA typ, 15 uA max; VFB = 1.5 V, TJ = 25°C |
| No-Load Quiescent Current at VIN Max | 11 uA typ, 15 uA max; VFB = 1.5 V, VIN = 65 V, TJ = 25°C |
| Shutdown Supply Current | 4.6 uA typ, 6 uA max; VEN = 0 V, TJ = 25°C |
| Active Supply Current | 205 uA typ; PFM mode |
| Active Supply Current | 300 uA typ; COT mode, RRT = 107 kOhm |
| High-Side MOSFET On Resistance | 2 Ohm typ; ISW = -10 mA |
| Low-Side MOSFET On Resistance | 1 Ohm typ; ISW = 10 mA |
| High-Side Peak Current Limit | 220 mA min, 240 mA typ, 264 mA max; ILIM shorted to GND, VSON-10 package |
| High-Side Peak Current Limit | 155 mA min, 180 mA typ, 205 mA max; RILIM = 24.9 kOhm, VSON-10 package |
| High-Side Peak Current Limit | 100 mA min, 120 mA typ, 145 mA max; RILIM = 56.2 kOhm, VSON-10 package |
| High-Side Peak Current Limit | 48 mA min, 60 mA typ, 75 mA max; RILIM >= 100 kOhm, VSON-10 package |
| Fixed Output Voltage | 4.9 V min, 5 V typ, 5.1 V max; LM5165X, VOUT 5-V DC setpoint |
| Fixed Output Voltage | 3.23 V min, 3.3 V typ, 3.37 V max; LM5165Y, VOUT 3.3-V DC setpoint |
| Adjustable Feedback Reference Lower Threshold | 1.205 V min, 1.223 V typ, 1.241 V max; PFM or COT mode, adjustable output version |
| Adjustable Feedback Reference Upper Threshold | 1.22 V min, 1.233 V typ, 1.246 V max; PFM mode, adjustable output version |
| FB Comparator PFM Hysteresis | 10 mV typ; PFM mode |
| FB Comparator Dropout Hysteresis | 4 mV typ; COT mode |
| FB Pin Input Bias Current | 100 nA typ; VFB = 1 V |
| FB Threshold Line Regulation | 0.001 %/V typ; VIN = 3 V to 65 V |
| VOUT Threshold Line Regulation | 0.001 %/V typ; LM5165X VIN = 6 V to 65 V; LM5165Y VIN = 4.5 V to 65 V |
| Internal Voltage Reference | 1.223 V ±1%; feature summary |
| Soft-Start Time | 900 us; internal soft-start, SS pin left open |
| Enable Threshold | 1.212 V; converter enabled when EN voltage is greater than threshold |
| Operating Junction Temperature | -40°C to 150°C; recommended operating conditions |
| Absolute Maximum VIN and EN Voltage | -0.3 to 68 V; VIN, EN to GND |
| Absolute Maximum PGOOD and VOUT Voltage | -0.3 to 16 V; PGOOD, VOUT to GND; survives short to automotive battery voltage; fixed output versions |
| Absolute Maximum HYS Voltage | -0.3 to 7 V; HYS to GND |
| Absolute Maximum ILIM, SS, RT, FB Voltage | -0.3 to 3.6 V; ILIM, SS, RT, FB to GND; FB applies to adjustable output version |
| ESD Rating HBM | ±2000 V; human body model per ANSI/ESDA/JEDEC JS-001, all pins |
| ESD Rating CDM | ±1000 V; charged device model per JEDEC JESD22-C101, all pins |
| Junction-to-Ambient Thermal Resistance | 47.7 °C/W; DRC VSON 10-pin package |
| Junction-to-Case Top Thermal Resistance | 59.9 °C/W; DRC VSON 10-pin package |
| Junction-to-Board Thermal Resistance | 22.1 °C/W; DRC VSON 10-pin package |
| Junction-to-Case Bottom Thermal Resistance | 4 °C/W; DRC VSON 10-pin package |
| Datasheet Status | request_only |
Product Overview
The LM5165 is a Texas Instruments synchronous buck converter in the Power_Management category. Its recommended input operating range is 3 to 65 V, with output current ratings of 0 to 150 mA in COT mode and 0 to 100 mA in PFM mode. The device uses integrated high-side and low-side MOSFETs with typical on-resistance values of 2 Ω and 1 Ω, respectively.
Output regulation options include LM5165X fixed 5 V output, LM5165Y fixed 3.3 V output, and an adjustable output version using a 1.223 V ±1% internal reference. The extracted datasheet facts also specify adjustable feedback thresholds, PFM comparator hysteresis, COT dropout hysteresis, FB pin bias current, and line-regulation values for feedback and fixed-output operation.
Package information identifies a DRC 10-pin VSON, 3 mm x 3 mm, 0.5-mm pin pitch, with exposed thermal pad; VSSOP-10 is also mentioned. Thermal data for the DRC package includes 47.7°C/W junction-to-ambient resistance and 4°C/W junction-to-case-bottom resistance. The device is specified for -40°C to 150°C operating junction temperature and includes absolute maximum ratings and ESD ratings for design review.
Key Features
- 3 to 65 V recommended input operating range
- 150 mA COT-mode output current capability
- 100 mA PFM-mode output current capability
- 10.5 uA typical no-load quiescent current
- 4.6 uA typical shutdown supply current
- Integrated 2 Ohm high-side MOSFET
- Integrated 1 Ohm low-side MOSFET
- Programmable high-side peak current limit levels
- Fixed 5 V and 3.3 V output versions
- Adjustable version with 1.223 V reference
- 900 us internal soft-start with SS open
- -40°C to 150°C junction-temperature operation
Typical Applications
- Low-current step-down power rails
- 65 V input buck conversion
- Fixed 5 V output rails
- Fixed 3.3 V output rails
- Adjustable-output power supplies
- PFM-mode low-current regulation
- COT-mode 150 mA rails
- Thermally reviewed VSON assemblies
Procurement Notes
When requesting a quote for LM5165, 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 LM5165 support?
The LM5165 recommended operating input voltage range is 3 to 65 V. Absolute maximum voltage for VIN and EN to GND is specified as -0.3 to 68 V, so design operation should stay within the recommended range.
How much output current is specified for LM5165 operation?
The extracted datasheet facts specify 0 to 150 mA output current in COT mode and 0 to 100 mA in PFM mode, both under recommended operating conditions.
Which output-voltage options are identified for the LM5165?
The LM5165X fixed-output version is specified at 5 V typical, with 4.9 V minimum and 5.1 V maximum. The LM5165Y fixed-output version is specified at 3.3 V typical, with 3.23 V minimum and 3.37 V maximum.
What package information is available for the LM5165?
The package information identifies a DRC 10-pin VSON measuring 3 mm x 3 mm, with 0.5-mm pin pitch and an exposed thermal pad. VSSOP-10 is also mentioned in the extracted package facts.
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.