TPS62840DLCR - 60nA IQ Buck Converter | Texas Instruments
MPN: TPS62840DLCR ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.53 | $2.53 |
| 10 | $2.28 | $22.80 |
| 100 | $1.98 | $198.00 |
| 500 | $1.75 | $875.00 |
| 1,000 | $1.55 | $1,550.00 |
Drop-in alternatives for TPS62840DLCR — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
TPS62840DLCT
✅ Drop-In📋 Reference alternative (not in catalog)
TPS62840DLC
✅ Drop-In📋 Reference alternative (not in catalog)
TPS62840DLCRQ1
✅ Drop-In📋 Reference alternative (not in catalog)
TPS62843DLCR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS62842DLCR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS62841DLCR
✅ Drop-In📋 Reference alternative (not in catalog)
TPS62840DLCR Maximum Ratings & Electrical Characteristics
| Function | Step-Down (Buck) Converter |
| Input Voltage Range | 1.8 V to 6.5 V |
| Output Voltage Range | Adjustable from 1.8 V |
| Maximum Output Current | 750 mA |
| Quiescent Current (Operating) | 60 nA (typical) |
| Quiescent Current (100% Mode) | 120 nA (typical) |
| Switching Frequency | 1.8 MHz (typical) |
| Efficiency at 1 µA Load | 80% (3.6 V to 1.8 V) |
| Control Topology | DCS-Control™ |
| Package | 8-VFDFN (DLC) 3.0 mm × 3.0 mm |
| Operating Temperature Range | -40°C to +125°C (junction) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| STOP Pin | Yes (disables switching) |
| Soft-Start | Yes |
| Overcurrent Protection | Yes |
| Thermal Shutdown | Yes |
TPS62840DLCR Pin Configuration
| Pin 1 | VIN — Input supply voltage |
| Pin 2 | GND — Ground |
| Pin 3 | SW — Switch node (inductor connection) |
| Pin 4 | VOUT — Output voltage sense |
| Pin 5 | FB — Feedback for output voltage setting |
| Pin 6 | EN — Enable (active high) |
| Pin 7 | STOP — Stop switching (active high) |
| Pin 8 | GND — Ground (exposed pad) |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
TPS62840DLCR is suitable for 6 applications: Battery-Powered IoT Sensors, Wearable Devices, Energy Harvesting Systems, Wireless Earbuds, Smart Meters, RF Transceivers.
Battery-Powered IoT Sensors
The TPS62840DLCR's ultra-low quiescent current of 60 nA and high efficiency at light loads make it ideal for IoT sensors that operate on battery power for years. It supports input voltages from 1.8 V to 6.5 V, compatible with alkaline, Li-MnO2, and Li-Ion batteries. The device's DCS-Control™ topology ensures stable output even with varying load conditions, while the STOP pin allows noise-free measurements in sensor applications. With 80% efficiency at 1 µA load, it maximizes battery life in always-on sensing nodes.
Recommended
Wearable Devices
In wearables like smartwatches and fitness trackers, the TPS62840DLCR provides a compact, efficient power solution. Its 3.0 mm × 3.0 mm VFDFN package saves board space, and the 60 nA quiescent current extends battery life during standby. The device supports 1.8 V to 6.5 V input, covering single-cell Li-Ion batteries. The 1.8 MHz switching frequency allows small external components, reducing overall size. The STOP pin can disable switching to avoid interference with sensitive sensors or wireless communication.
Recommended
Energy Harvesting Systems
The TPS62840DLCR is well-suited for energy harvesting systems where input power is limited and variable. Its ultra-low quiescent current (60 nA) minimizes losses, and its wide input range (1.8 V to 6.5 V) accommodates output from solar cells, thermoelectric generators, or vibration harvesters. The device's high efficiency at microamp loads ensures maximum energy transfer. The DCS-Control™ topology provides stable operation with small capacitors, simplifying the design. The STOP pin can be used to temporarily disable the converter during measurement or calibration.
Recommended
Wireless Earbuds
Wireless earbuds require compact, efficient power management to maximize battery life. The TPS62840DLCR's 60 nA quiescent current and 750 mA output capability make it ideal for powering audio codecs, Bluetooth SoCs, and charging circuits. Its small VFDFN package fits into tight spaces, and the 1.8 MHz switching frequency allows tiny inductors. The device supports input from a single-cell Li-Ion battery (3.0-4.2 V) and provides a stable 1.8 V rail. The STOP pin can eliminate switching noise during audio playback.
Recommended
Smart Meters
Smart meters often run on battery power for years and require ultra-low power consumption. The TPS62840DLCR's 60 nA quiescent current is ideal for maintaining operation during standby, while its 750 mA output can power communication modules during data transmission. The wide input range (1.8 V to 6.5 V) supports various battery configurations. The device's high efficiency at light loads ensures long battery life. The STOP pin can be used to disable switching during sensitive measurements, reducing noise.
Recommended
RF Transceivers
The TPS62840DLCR is designed to power RF transceivers with its DCS-Control™ topology, which provides clean, low-noise output. The STOP pin allows immediate elimination of switching noise, crucial for sensitive RF measurements. The device's 60 nA quiescent current is beneficial for battery-powered RF modules that spend most time in sleep mode. With an output current of 750 mA, it can support high-power transmission bursts. The input range of 1.8 V to 6.5 V accommodates various battery sources.
Recommended
Recommended Products Summary
Engineering reference data for TPS62840DLCR — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | TPS62840DLCT | TPS62840DLC | TPS62840DLCRQ1 | TPS62843DLCR | TPS62842DLCR | TPS62841DLCR |
|---|---|---|---|---|---|---|---|
| Package | 8-VFDFN (DLC) | 8-VFDFN (DLC) | 8-VFDFN (DLC) | 8-VFDFN (DLC) | 8-VFDFN (DLC) | 8-VFDFN (DLC) | 8-VFDFN (DLC) |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Quiescent Current (IQ) | 60 nA | 60 nA | 60 nA | 60 nA | 275 nA | 60 nA | 60 nA |
| Maximum Output Current | 750 mA | 750 mA | 750 mA | 750 mA | 750 mA | 600 mA | 300 mA |
| Input Voltage Range | 1.8 V to 6.5 V | 1.8 V to 6.5 V | 1.8 V to 6.5 V | 1.8 V to 6.5 V | 1.8 V to 6.5 V | 1.8 V to 6.5 V | 1.8 V to 6.5 V |
| Switching Frequency | 1.8 MHz | 1.8 MHz | 1.8 MHz | 1.8 MHz | 1.8 MHz | 1.8 MHz | 1.8 MHz |
| Automotive Grade | No | No | No | Yes (AEC-Q100) | No | No | No |
| STOP Pin | Yes | Yes | Yes | Yes | Yes | Yes | Yes |
Key Differentiators
- Ultra-low quiescent current of 60 nA (vs TPS62843DLCR)
- Higher output current capability (vs TPS62842DLCR)
- Automotive grade option available (vs TPS62840DLCRQ1)
Design Notes
Place the input capacitor (10 µF) and output capacitor (22 µF) as close as possible to the VIN and VOUT pins, respectively. Use low-ESR ceramic capacitors (X5R or better) to minimize voltage ripple. The inductor should be placed near the SW pin with a short, wide trace to reduce parasitic inductance and EMI.
For optimal efficiency at light loads, ensure the inductor value is selected according to the datasheet recommendations (typically 2.2 µH to 4.7 µH). The DCS-Control™ topology automatically transitions to Power-Save Mode at light loads, reducing switching frequency. Avoid using inductors with excessive DC resistance (DCR) to minimize losses.
Do not exceed the absolute maximum input voltage of 6.5 V. The STOP pin should be tied to GND if not used, as floating inputs can cause unpredictable behavior. Ensure the feedback resistor divider uses 1% tolerance resistors to maintain output voltage accuracy. Also, verify that the output capacitor's effective capacitance does not drop below the minimum required value due to DC bias.
Compliance Information
RoHS compliant per TI product page. Not AEC-Q100 qualified - choose TPS62840DLCRQ1 for automotive.
