TPS62840
Step-Down ConverterThe TPS62840 is a step-down converter from Texas Instruments. View the full TPS62840 datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
Official TPS62840 datasheet (PDF) — the source this page was extracted from.
Manufacturer
Texas InstrumentsCategory
Switching Regulators (Buck)TPS62840 Key Specifications
| Parameter | Value |
|---|---|
| Output Current | up to 750 mA |
| Shutdown Current | 25 nA |
| Input Voltage Range | 1.8V to 6.5V |
| Switching Frequency | 1.8 MHz (typical) |
| Efficiency At 1 UA Load | 80% (3.6 VIN to 1.8 VOUT) |
| Package Options (Family) | SON-8 (1.5x2 mm), WCSP-6 (0.97x1.47 mm), HVSSOP-8 (3x5 mm) |
| Selectable Output Voltages | 16 via VSET resistor |
| Operating Quiescent Current | 60 nA |
| Quiescent Current (100% Duty-Cycle Mode) | 120 nA |
TPS62840 Overview
Part: TPS62840 — Texas Instruments
Type: Step-Down Converter
Description: A high-efficiency step-down converter with an ultra-low operating quiescent current of 60 nA, supporting an input voltage range of 1.8 V to 6.5 V and providing up to 750 mA output current.
Operating Conditions:
- Supply voltage: 1.8 V to 6.5 V
- Operating temperature: -40 to +125 °C
- Output current: up to 750 mA
Absolute Maximum Ratings:
- Max supply voltage: 7 V
- Max junction/storage temperature: 150 °C
Key Specs:
- Operating quiescent current (IQ): 60 nA (typical)
- 100% duty-cycle mode IQ: 120 nA
- Shutdown current: 25 nA
- Output current: 750 mA (max)
- Efficiency: 80% at 1 μA IOUT (3.6 VIN to 1.8 VOUT)
- Switching frequency: 1.8 MHz (typical)
- Output voltage selection: 16 selectable voltages via VSET pin
Features:
- 60-nA operating quiescent current
- 100% duty-cycle mode with 120-nA IQ
- RF friendly DCS-Control™
- 16 selectable output voltages via VSET pin
- Auto transition PFM/PWM or forced-PWM mode
- Selectable forced PWM and STOP modes
- Output discharge function
Applications:
- Smart meters, smart thermostats
- Asset tracking devices
- Wearable electronics
- Medical sensor patches and patient monitors
- Industrial IoT (smart sensors) / NB-IoT
- Test and measurement
- ATEX / intrinsic safety
Package:
- SON-8 (DLC)
- WCSP-6 (YBG)
- HVSSOP-8 (DGR)
TPS62840 Features
- 1 · 60-nA operating quiescent current
- 100% duty-cycle mode with 120-nA IQ
- Input voltage range VIN from 1.8 V to 6.5 V
- Output current up to 750 mA
- RF friendly DCS-Control™
- 80% efficiency at 1 μA IOUT (3.6 VIN to 1.8 VOUT)
- 16 selectable output voltages via VSET pin
- Auto transition PFM/PWM or forced-PWM mode
- Selectable forced PWM and STOP modes
- Output discharge function
- 25-nA shutdown current
- SON-8, WCSP-6 and thermally enhanced HVSSOP-8 packages
TPS62840 Applications
- Smart meters, smart thermostats
- Asset tracking devices
- Wearable electronics
- Medical sensor patches and patient monitors
- Industrial IoT (smart sensors) / NB-IoT
- Test and measurement
- ATEX / intrinsic safety
TPS62840 Pin Configuration
TPS62840 Electrical Characteristics
VIN = 3.6 V, TJ = -40°C to 125°C, STOP = GND, MODE = GND, typical values are at TJ = 25°C (unless otherwise noted)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| SUPPLY | SUPPLY | SUPPLY | SUPPLY | SUPPLY | SUPPLY | SUPPLY |
| I Q_NO_LOAD | No load operating input current | EN = V IN , I OUT = 0μA, V OUT = 1.8V device switching | 60 | nA | ||
| I Q_NO_LOAD | No load operating input current | EN = V IN, I OUT = 0μA, V OUT = 1.2V device switching | 80 | nA | ||
| I Q_NO_LOAD | No load operating input current (PWM Mode) | EN = V IN , I OUT = 0μA, V OUT = 1.8V, MODE = V IN device switching | 3 | mA | ||
| I Q_VIN | Operating quiescent current into pin VIN | EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = 25°C (DLC package option) | 36 | 100 | nA | |
| I Q_VOS | Operating quiescent current into pin VOS | EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = 25°C (DLC package option) | 56 | 120 | nA | |
| I Q_VIN | Operating quiescent current into pin VIN | EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = -40°C to 85°C | 36 | 360 | nA | |
| I Q_VOS | Operating quiescent current into pin VOS | EN = V IN , I OUT = 0μA, V OUT = 1.55V or V OUT = 1.8V device not switching, T J = -40°C to 85°C | 56 | 170 | nA | |
| I Q_VOS | Operating quiescent current into VOS pin | EN = V IN , V OUT = 3.3V device not switching | 70 | nA | ||
| I Q_VOS | Operating quiescent current into VOS pin | EN = V IN , V OUT < 1.5 V device not switching | 5 | nA | ||
| I Q_VOS | Operating quiescent current into VOS pin | EN, STOP = V IN , 3V < V OUT < 3.3V T J = -40°C to 85°C | 5 | 100 | nA | |
| I Q_100%_MODE | Operating quiescent current 100% Mode | V IN = V OUT = 3.3V, T J = -40°C to 85°C | 120 | nA | ||
| I Q_VIN_STOP | Operating quiescent current into pin VIN | STOP = High, V OUT = 1.8V, T J = -40°C to 85°C | 70 | 175 | μA | |
| I SD | Shutdown current | EN = GND, shutdown current into V IN VSET = GND, T J = -40°C to 85°C | 25 | 300 | nA | |
| V TH_UVLO+ | Undervoltage lockout threshold | Rising V IN | 1.72 | 1.8 | V | |
| V TH_UVLO- | Falling V IN | 1.45 | 1.75 | V | ||
| EN, MODE, STOP INPUTS | EN, MODE, STOP INPUTS | EN, MODE, STOP INPUTS | EN, MODE, STOP INPUTS | EN, MODE, STOP INPUTS | EN, MODE, STOP INPUTS | EN, MODE, STOP INPUTS |
| V IH_TH | High level input voltage | 1.1 | V | |||
| V IL_TH | Low level input voltage | 0.4 | V | |||
| I IN | Input bias current | MODE input, T J = -40°C to 85°C | 1 | 25 | nA | |
| R PD | Internal pull-down resistance | EN, STOP inputs | 200 | 450 | k Ω |
TPS62840 Absolute Maximum Ratings
| MIN | MAX | UNIT | ||
|---|---|---|---|---|
| VIN | -0.3 | 7 | V | |
| SW (DC) | -0.3 | V IN + 0.3 | V | |
| SW (AC), less than 10ns (3) | -2 | 8.5 | V | |
| EN, MODE, STOP | -0.3 | 6.5 | V | |
| VSET | -0.3 | V IN + 0.3 < 3.6 | V | |
| VOS | -0.3 | 3.7 | V | |
| Operating junction temperature, T J | Operating junction temperature, T J | -40 | 150 | °C |
| Storage temperature, T stg | Storage temperature, T stg | -65 | 150 | °C |
TPS62840 Recommended Operating Conditions
| MIN | NOM | MAX | UNIT | ||
|---|---|---|---|---|---|
| V IN | Supply voltage V IN | 1.8 | 6.5 | V | |
| L | Effective inductance | 1.51 | 2.2 | 2.9 | μH |
| C OUT | Effective output capacitance | 3 | 10 | 40 | μF |
| C IN | Effective input capacitance | 1 | 4.7 | μF | |
| C VSET | External parasitic capacitance at VSET pin | 100 | pF | ||
| R SET | Nominal resistance range for external voltage selection resistor (E96 resistor series) External voltage selection resistor tolerance | 0.909 | 267 1% | k Ω | |
| External voltage selection resistor temperature coefficient | ±200 | ppm/°C | |||
| T J | Operating junction temperature range | -40 | 125 | °C |
TPS62840 Thermal Information
| THERMAL METRIC (1) | THERMAL METRIC (1) | 8 Pins DLC Package | 6 Pins YBG Package | 8 Pins DGR Package | DGR EVM | UNIT |
|---|---|---|---|---|---|---|
| JEDEC PCB 51-7 | JEDEC PCB 51-7 | JEDEC PCB 51-5 | TPS62841-2EVM123 | |||
| R θ JA | Junction-to-ambient thermal resistance | 105.6 | 133.4 | 54.4 | 46.9 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 75.7 | 0.4 | 58.1 | N/A | °C/W |
| R θ JB | Junction-to-board thermal resistance | 31.9 | 39.4 | 25.9 | N/A | °C/W |
| ψ JT | Junction-to-top characterization parameter | 2.3 | 0.1 | 1.2 | 0.9 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 31.5 | 39.4 | 25.9 | 17.4 | °C/W |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | n/a | n/a | 11.7 | N/A | °C/W |
TPS62840 Typical Application
1
TPS62840
SLVSEC6D -JUNE 2019-REVISED MARCH 2020
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