LMR16030
Synchronous Buck ConverterThe LMR16030 is a synchronous buck converter from Texas Instruments. View the full LMR16030 datasheet below including pinout, electrical characteristics, absolute maximum ratings.
Manufacturer
Texas Instruments
Category
Synchronous Buck Converter
Package
HSOIC (8)
Overview
Part: LMR16030 — Texas Instruments
Type: Synchronous Buck Converter
Description: The LMR16030 is a 60V, 3A SIMPLE SWITCHER® buck regulator with an integrated high-side MOSFET, featuring a wide input voltage range of 4.3V to 60V and an ultra-low 40μA quiescent current.
Operating Conditions:
- Supply voltage: 4.3V to 60V
- Operating junction temperature: -40 to 125 °C
- Output voltage: 0.8V to 50V
- Switching frequency range (RT mode): 200 kHz to 2.5 MHz
Absolute Maximum Ratings:
- Max supply voltage (VIN, EN to GND): 65 V
- Max SW to GND voltage: 65 V
- Max junction temperature: 150 °C
- Max storage temperature: 150 °C
Key Specs:
- Continuous output current: 3 A
- Quiescent current (non-switching): 40 μA (typ) at VFB = 1.0 V, TA = 25 °C
- Shutdown supply current: 1 μA (typ) at VEN = 0 V, TA = 25 °C
- High-side MOSFET on-resistance: 155 mΩ (typ) at VIN = 12 V, BOOT to SW = 5.8 V
- Current limit: 4.75 A (typ) at VIN = 12 V, TA = 25 °C
- Feedback voltage: 0.75 V (typ) at TJ = 25 °C
- Thermal shutdown threshold: 170 °C (typ)
- Maximum duty cycle: 97% (at fSW = 200 kHz)
Features:
- Current mode control
- Adjustable switching frequency range: 200kHz to 2.5MHz
- External clock synchronization
- Internal compensation
- High duty cycle operation support
- Precision enable pin
- Thermal, overvoltage, and short-circuit protection
- Sleep-mode at light load for high efficiency
Applications:
- Automotive battery regulation
- Industrial power supplies
- Telecom and datacom systems
- General purpose wide input voltage regulation
Package:
- HSOIC (8) (4.89mm x 3.90mm)
Pin Configuration
LMR16030 Pinout – HSOIC-8
| Pin Number | Pin Name | Type | Description |
|---|---|---|---|
| 1 | BOOT | I | Bootstrap pin for high-side gate driver |
| 2 | VIN | P | Input supply voltage |
| 3 | EN | I | Enable control input |
| 4 | RT/SYNC | I | Frequency setting / Synchronization input |
| 5 | FB | I | Feedback input for output voltage regulation |
| 6 | SS or PGOOD | O | Soft-start or Power-good output |
| 7 | GND | P | Ground |
| 8 | SW | O | Switch node output |
| — | Thermal Pad (9) | — | Exposed thermal pad (bottom of package) |
Notes
- Pin 9 is the exposed thermal pad on the bottom of the HSOIC-8 package; it should be soldered to ground for optimal thermal performance.
- This pinout applies to both LMR16030PDDAR and LMR16030SDDAR variants (same pin configuration, different temperature ratings).
Electrical Characteristics
Limits apply over the recommended operating junction temperature (TJ) range of -40 °C to +125 °C, unless otherwise stated. Minimum and Maximum limits are specified through test, design or statistical correlation. Typical values represent the most likely parametric norm at TJ = 25 °C, and are provided for reference purposes only. Unless otherwise specified, the following conditions apply: VIN = 4.3 V to 60 V
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| POWER SUPPLY (VIN PIN) | POWER SUPPLY (VIN PIN) | |||||
| V IN | Operation input voltage | 4.3 | 60 | V | ||
| UVLO | Under voltage lockout thresholds | Rising threshold | 3.8 | 4 | 4.2 | V |
| UVLO | Under voltage lockout thresholds | Hysteresis | 285 | mV | ||
| I SHDN | Shutdown supply current | V EN = 0 V, T A = 25 °C, 4.3 V ≤ V IN ≤ 60 V | 1 | 3 | μ A | |
| I Q | Operating quiescent current (non- switching) | V FB = 1.0 V, T A = 25 °C | 40 | μ A | ||
| ENABLE (EN PIN) | ENABLE (EN PIN) | |||||
| V EN_TH | EN Threshold Voltage | 1.05 | 1.2 | 1.38 | V | |
| I EN_PIN | EN PIN current | Enable threshold +50 mV | -4.6 | μ A | ||
| I EN_PIN | EN PIN current | Enable threshold -50 mV | -1 | |||
| I EN_HYS | EN hysteresis current | -3.6 | μ A | |||
| SOFT-START | SOFT-START | |||||
| I SS | SS pin current | For External Soft-Start version only, T A = 25 °C | -3 | μ A | ||
| t SS | Internal soft-start time | For Power-Good version only, 10% to 90% of FB voltage | 4 | ms | ||
| POWER GOOD (PGOOD PIN) | POWER GOOD (PGOOD PIN) | |||||
| V PG_UV | Power-good flag under voltage tripping threshold | POWER GOOD (% of FB voltage) | 94 | % | ||
| V PG_UV | Power-good flag under voltage tripping threshold | POWER BAD (% of FB voltage) | 92 | % | ||
| V PG_OV | Power-good flag over voltage tripping threshold | POWER BAD (% of FB voltage) | 109 | % | ||
| V PG_OV | Power-good flag over voltage tripping threshold | POWER GOOD (% of FB voltage) | 107 | % | ||
| V PG_HYS | Power-good flag recovery hysteresis | % of FB voltage | 2 | % | ||
| I PG | PGOOD leakage current at high level output | V Pull-Up = 5 V | 10 | 200 | nA | |
| V PG_LOW | PGOOD low level output voltage | I Pull-Up = 1 mA | 0.1 | V | ||
| V IN_PG_MIN | Minimum VIN for valid PGOOD output | V Pull-Up < 5 V at I Pull-Up = 100 μ A | 1.6 | 1.95 | V | |
| VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) | |||||
| V FB | Feedback voltage | T J = 25 °C | 0.746 | 0.75 | 0.754 | V |
| V FB | Feedback voltage | T J = -40 °C to 125 °C | 0.735 | 0.75 | 0.765 | V |
Absolute Maximum Ratings
Over the recommended operating junction temperature range of -40 °C to 125 °C (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Input Voltages | VIN, EN to GND | -0.3 | 65 | V |
| Input Voltages | BOOT to GND | -0.3 | 71 | V |
| Input Voltages | SS to GND | -0.3 | 5 | V |
| Input Voltages | FB to GND | -0.3 | 7 | V |
| Input Voltages | RT/SYNC to GND | -0.3 | 3.6 | V |
| Input Voltages | PGOOD to GND | -0.3 | 7 | V |
| Output Voltages | BOOT to SW | 6.5 | V | |
| Output Voltages | SW to GND | -3 | 65 | V |
| T J | Junction temperature | -40 | 150 | °C |
| T stg | Storage temperature | -65 | 150 | °C |
Recommended Operating Conditions
Over the recommended operating junction temperature range of -40 °C to 125 °C (unless otherwise noted) (1)
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| Buck Regulator | VIN | 4.3 | 60 | V |
| Buck Regulator | VOUT | 0.8 | 50 | V |
| Buck Regulator | BOOT | 66 | V | |
| Buck Regulator | SW | -1 | 60 | V |
| Buck Regulator | FB | 0 | 5 | V |
| Control | EN | 0 | 60 | V |
| Control | RT/SYNC | 0 | 3.3 | V |
| Control | SS | 0 | 3 | V |
| Control | PGOOD to GND | 0 | 5 | V |
| Frequency | Switching frequency range at RT mode | 200 | 2500 | kHz |
| Frequency | Switching frequency range at SYNC mode | 250 | 2300 | kHz |
| Temperature | Operating junction temperature, T J | -40 | 125 | °C |
Thermal Information
| THERMAL METRIC (1) (2) | LMR16030 DDA (HSOIC) 8 PINS | UNIT | |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 42.5 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 9.9 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 25.4 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 56.1 | °C/W |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | 3.8 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 25.5 | °C/W |
Typical Application
The LMR16030 is a step down DC-to-DC regulator. It is typically used to convert a higher DC voltage to a lower DC voltage with a maximum output current of 3 A. The following design procedure can be used to select components for the LMR16030. This section presents a simplified discussion of the design process.
Ordering Information
| MPN | Package | Temperature Range | Packing |
|---|---|---|---|
| LMR16030PDDAR | HSOIC (8) | -40 °C to 125 °C (Junction) | null |
| LMR16030SDDAR | HSOIC (8) | -40 °C to 125 °C (Junction) | null |
Related Variants
The following components are covered by the same datasheet.
| Part Number | Manufacturer | Package |
|---|---|---|
| LMR16030P | Texas Instruments | — |
| LMR16030PDDA | Texas Instruments | — |
| LMR16030PDDAR | Texas Instruments | HSOIC (8) |
| LMR16030S | Texas Instruments | — |
| LMR16030SDDA | Texas Instruments | — |
| LMR16030SDDAR | Texas Instruments | HSOIC (8) |
Get structured datasheet data via API
Get started free