LMR16030SDDA
Synchronous Buck ConverterThe LMR16030SDDA is a synchronous buck converter from Texas Instruments. View the full LMR16030SDDA datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
LMR16030SDDA shares its datasheet with LMR16030, whose page lists every part number it covers.
Official LMR16030SDDA datasheet (PDF) — the source this page was extracted from.
LMR16030SDDA Key Specifications
| Parameter | Value |
|---|---|
| Soft-Start | External capacitor via SS pin (3µA) |
| Shutdown Current | 1µA (typ) |
| Package Dimensions | 4.89mm x 3.90mm |
| Input Voltage Range | 4.3V to 60V |
| Output Voltage Range | 0.8V to 50V |
| UVLO Rising Threshold | 4.0V (typ) |
| High-Side MOSFET Rds(On) | 155mΩ |
| Continuous Output Current | 3A |
| Feedback Reference Voltage | 0.75V (typ) |
| Operating Junction Temperature | -40°C to 125°C |
| Synchronization Frequency Range | 250kHz to 2.3MHz |
| Quiescent Current (Non-Switching) | 40µA |
| Switching Frequency Range (RT Mode) | 200kHz to 2.5MHz |
| Junction-To-Ambient Thermal Resistance | 42.5°C/W |
LMR16030SDDA Overview
Part: LMR16030 (LMR16030PDDAR Power Good / LMR16030SDDAR Soft Start) — Texas Instruments
Type: SIMPLE SWITCHER Step-Down (Buck) Converter with integrated high-side MOSFET
Description: 4.3–60 V input, 3 A step-down converter with 155 mΩ (typ) integrated high-side MOSFET, 40 μA quiescent current, and adjustable 200 kHz–2.5 MHz switching frequency.
Operating Conditions:
- Supply voltage (VIN): 4.3–60 V
- Operating junction temperature: -40 to 125 °C
- Output voltage range: 0.8–50 V
- Switching frequency: 200–2500 kHz (RT mode), 250–2300 kHz (SYNC mode)
Absolute Maximum Ratings:
- VIN, EN to GND: -0.3 to 65 V
- BOOT to GND: -0.3 to 71 V
- SW to GND: -3 to 65 V
- Junction temperature: -40 to 150 °C
- Storage temperature: -65 to 150 °C
Key Specs:
- Feedback voltage: 0.750 V typ (0.735–0.765 V over TJ = -40 to 125 °C)
- High-side MOSFET RDS(on): 155 mΩ typ, 320 mΩ max (VIN = 12 V, BOOT to SW = 5.8 V)
- Current limit: 3.80 / 4.75 / 5.70 A (min/typ/max; VIN = 12 V, TA = 25 °C, open loop)
- Operating quiescent current: 40 μA typ (non-switching, VFB = 1.0 V, TA = 25 °C)
- Shutdown supply current: 1.0 μA typ, 3.0 μA max (VEN = 0 V, TA = 25 °C)
- UVLO rising threshold: 4.0 V typ (3.8–4.2 V), 285 mV hysteresis
- EN threshold: 1.20 V typ (1.05–1.38 V)
- Minimum controllable on-time: 90 ns typ; maximum duty cycle 97% typ (fSW = 200 kHz)
- Thermal shutdown: 170 °C typ, 12 °C hysteresis
- Thermal resistance RθJA: 42.5 °C/W (DDA HSOIC-8)
Features:
- 3 A continuous output current
- Current mode control with internal compensation
- Adjustable switching frequency with external clock synchronization
- Precision enable input
- High duty cycle operation
- Thermal shutdown, overvoltage and short-circuit protection, cycle-by-cycle current limit
- Power Good version (P) or external soft-start version (S)
- WEBENCH Power Designer support
Applications:
- Automotive battery regulation
- Industrial power supplies
- Telecom and datacom systems
- General purpose wide VIN regulation
Package:
- 8-pin HSOIC with PowerPAD (DDA), 4.89 mm × 3.90 mm
LMR16030SDDA Features
- New product available: LM76003 60-V, 3.5-A, 2.2MHz synchronous converter
- 4.3-V to 60-V input range
- 3-A continuous output current
- Ultra-low 40-μA operating quiescent current
- 155-mΩ high-side MOSFET
- Current mode control
- Adjustable switching frequency from 200 kHz to 2.5 MHz
- Frequency synchronization to external clock
- Internal compensation for ease of use
- High duty cycle operation supported
- Precision enable input
- 1-μA shutdown current
- Thermal, overvoltage and short protection
- 8-pin HSOIC with PowerPAD ™ package
- Create a custom design using the LM76003 with the WEBENCH ® Power Designer
- Create a custom design using the LM16030 with the WEBENCH ® Power Designer
LMR16030SDDA Applications
LMR16030SDDA Pin Configuration
Figure 5-1. 8-Pin (HSOIC) DDA Package (Top View)
Table 5-1. Pin Functions
| PIN - NAME | PIN - NO. | TYPE (1) | DESCRIPTION |
|---|---|---|---|
| BOOT | 1 | P | Bootstrap capacitor connection for high-side MOSFET driver. Connect a high quality 0.1-μF capacitor from BOOT to SW. |
| VIN | 2 | P | Connect to power supply and bypass capacitors C IN . Path from VIN pin to high frequency bypass C IN and GND must be as short as possible. |
| EN | 3 | A | Enable pin with internal pullup current source. Pull below 1.2 V to disable. Float or connect to VIN to enable. Adjust the input undervoltage lockout with two resistors. See Section 7.3.6. |
| RT/SYNC | 4 | A | Resistor Timing or External Clock input. An internal amplifier holds this pin at a fixed voltage when using an external resistor to ground to set the switching frequency. If the pin is pulled above the PLL upper threshold, a mode change occurs and the pin becomes a synchronization input. The internal amplifier is disabled and the pin is a high impedance clock input to the internal PLL. If clocking edges stop, the internal amplifier is re-enabled and the operating mode returns to frequency programming by resistor. |
| FB | 5 | A | Feedback input pin. Connect to the feedback divider to set V OUT . Do not short this pin to ground during operation. |
| SS or PGOOD | 6 | A | SS pin for soft-start version. Connect to a capacitor to set soft-start time. PGOOD pin for Power Good version, open drain output for power-good flag. Use a 10-kΩ to 100-kΩ pullup resistor to logic rail or other DC voltage no higher than 7 V. |
| GND | 7 | G | System ground pin |
| SW | 8 | P | Switching output of the regulator. Internally connected to high-side power MOSFET. Connect to power inductor. |
| Thermal Pad | 9 | G | Major heat dissipation path of the die. Must be connected to ground plane on PCB. |
- (1) A = Analog, P = Power, G = Ground
LMR16030SDDA 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 T J = 25°C, and are provided for reference purposes only. Unless otherwise specified, the following conditions apply: V IN = 4.3 V to 60 V
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| POWER SUPPLY (VIN PIN) | POWER SUPPLY (VIN PIN) | POWER SUPPLY (VIN PIN) | POWER SUPPLY (VIN PIN) | POWER SUPPLY (VIN PIN) | 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 | 4.0 | 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 | 1.0 | 3.0 | μA | |
| I Q | Operating quiescent current (non- switching) | V FB = 1.0 V, T A = 25 °C | 40 | μA | ||
| ENABLE (EN PIN) | ENABLE (EN PIN) | ENABLE (EN PIN) | ENABLE (EN PIN) | ENABLE (EN PIN) | ENABLE (EN PIN) | ENABLE (EN PIN) |
| V EN_TH | EN Threshold Voltage | 1.05 | 1.20 | 1.38 | V | |
| I EN_PIN | EN PIN current | Enable threshold +50 mV | -4.6 | μA | ||
| I EN_PIN | EN PIN current | Enable threshold -50 mV | -1.0 | |||
| I EN_HYS | EN hysteresis current | -3.6 | μA | |||
| SOFT-START | SOFT-START | SOFT-START | SOFT-START | SOFT-START | SOFT-START | SOFT-START |
| I SS | SS pin current | For External Soft-Start version only, T A = 25 °C | -3.0 | μA | ||
| t SS | Internal soft-start time | For Power-Good version only, 10% to 90% of FB voltage | 4.0 | ms | ||
| POWER GOOD (PGOOD PIN) | POWER GOOD (PGOOD PIN) | POWER GOOD (PGOOD PIN) | POWER GOOD (PGOOD PIN) | POWER GOOD (PGOOD PIN) | 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 μA | 1.6 | 1.95 | V | |
| VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) | VOLTAGE REFERENCE (FB PIN) |
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 T J = 25°C, and are provided for reference purposes only. Unless otherwise specified, the following conditions apply: V IN = 4.3 V to 60 V
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| V FB | Feedback voltage | T J = 25 °C | 0.746 | 0.750 | 0.754 | V |
| T J = -40 °C to 125 °C | 0.735 | 0.750 | 0.765 | V | ||
| HIGH-SIDE MOSFET | HIGH-SIDE MOSFET | |||||
| R DS_ON | On-resistance | V IN = 12 V, BOOT to SW = 5.8 V | 155 | 320 | mΩ | |
| HIGH-SIDE MOSFET CURRENT LIMIT | HIGH-SIDE MOSFET CURRENT LIMIT | |||||
| I LIMT | Current limit | V IN = 12 V, T A = 25 °C, Open Loop | 3.80 | 4.75 | 5.70 | A |
| THERMAL PERFORMANCE | THERMAL PERFORMANCE | |||||
| T SHDN | Thermal shutdown threshold | 170 | °C | |||
| T HYS | Hysteresis | 12 | °C |
LMR16030SDDA 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 |
LMR16030SDDA 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 |
LMR16030SDDA Thermal Information
| THERMAL METRIC (1) (2) | LMR16030 DDA (HSOIC) 8 PINS | UNIT | |
|---|---|---|---|
| R θJA | 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 θJC(top) | Junction-to-case (top) thermal resistance | 56.1 | °C/W |
| R θJC(bot) | Junction-to-case (bottom) thermal resistance | 3.8 | °C/W |
| R θJB | Junction-to-board thermal resistance | 25.5 | °C/W |
LMR16030SDDA 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.
Variants on the same datasheet
These parts have exact links to the same datasheet. They are candidates to compare, not verified drop-in replacements; check package, pinout and electrical limits.
| Part Number | Manufacturer | Package |
|---|---|---|
| LMR16030 | Texas Instruments | HSOIC (8) |
| LMR16030P | Texas Instruments | HSOIC-8 |
| LMR16030PDDA | Texas Instruments | 8-PowerSOIC (0.154", 3.90mm Width) |
| LMR16030PDDAR | Texas Instruments | 8-PowerSOIC (0.154", 3.90mm Width) |
| LMR16030S | Texas Instruments | HSOIC-8 |
| LMR16030SDDAR | Texas Instruments | 8-PowerSOIC (0.154", 3.90mm Width) |
Other Switching Regulators (Buck)
- TPS54302 – Texas Instruments, Synchronous Step-Down Converter
- MAX20730 – Analog Devices, Synchronous Switching Regulator
- TLV62568 – Texas Instruments, Synchronous Buck Converter
- LM2596 – onsemi, Step-Down Voltage Regulator
- AP63203WU – Diodes Incorporated, Synchronous Buck Converter
- TPS562200 – Texas Instruments, Synchronous Buck Converter
- MP2344GJ-Z – Monolithic Power Systems, Synchronous Step-Down Converter
- MP1584EN – Monolithic Power Systems, Buck Converter
All Switching Regulators (Buck) datasheetsAll Texas Instruments datasheets (2,442)
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