TPS61021ADSGR
Synchronous Boost ConverterThe TPS61021ADSGR is a synchronous boost converter from Texas Instruments. View the full TPS61021ADSGR datasheet below including key specifications, electrical characteristics, absolute maximum ratings.
TPS61021ADSGR shares its datasheet with TPS61021A, whose page lists every part number it covers.
Official TPS61021ADSGR datasheet (PDF) — the source this page was extracted from.
TPS61021ADSGR Key Specifications
| Parameter | Value |
|---|---|
| Quiescent Current | 17 μA (typical, from VOUT pin) |
| Maximum Efficiency | 91% (at VIN=2.4V, VOUT=3.3V, IOUT=1.5A) |
| Package Dimensions | 2.00mm x 2.00mm |
| Switching Frequency | 2.0 MHz (typical, reduces to 1 MHz at VIN < 1.5V) |
| Output Voltage Range | 1.8V to 4.0V |
| Supply Voltage Range | 0.5V to 4.4V (operating), 0.9V (minimum for startup) |
| Maximum Output Current | 1.5A (at VOUT=3.3V, VIN>1.8V) |
| Valley Switch Current Limit | 3A (minimum) |
| Operating Junction Temperature Range | -40°C to 125°C |
| Output Over-Voltage Protection Threshold | 4.35V (typical) |
TPS61021ADSGR Overview
Part: TPS61021A — Texas Instruments
Type: Synchronous Boost Converter
Description: 0.5–4.4 V input, 3 A valley current limit synchronous boost converter with 1.8–4.0 V adjustable output, 2 MHz switching frequency, 17 μA typical quiescent current and 91% efficiency (VIN = 2.4 V, VOUT = 3.3 V, IOUT = 1.5 A).
Operating Conditions:
- Supply voltage: 0.5–4.4 V (0.9 V maximum for startup UVLO rising)
- Operating junction temperature: -40 to 125 °C
- Output voltage setting range: 1.8–4.0 V
- Effective inductance 0.2–1.3 μH (0.47 μH nominal); effective input capacitance ≥ 1.0 μF
Absolute Maximum Ratings:
- VIN, SW, VOUT voltage: -0.3 to 4.6 V DC (4.8 V at 10% duty cycle)
- EN, FB voltage: -0.3 to 3.6 V DC
- Operating junction temperature: -40 to 150 °C
- Storage temperature: -65 to 150 °C
Key Specs:
- VIN UVLO threshold: 0.8 V typ / 0.9 V max rising; 0.4 V typ (0.28–0.5 V) falling
- Quiescent current into VOUT: 17 μA typ, 30 μA max (no load, no switching, TJ up to 85 °C)
- Quiescent current into VIN: 3.0 μA max (same conditions)
- Shutdown current: 0.5 μA typ, 3.0 μA max (VIN = 1.8–3.6 V, TJ up to 85 °C)
- Reference voltage at FB: 795 mV typ (775–815 mV) in PWM mode
- RDS(on): 51 mΩ high-side, 58 mΩ low-side (VOUT = 3.3 V)
- Valley current limit: 3.0 A min, 4.3 A typ (VIN = 2.4 V, VOUT = 3.3 V)
- Switching frequency: 2.0 MHz typ (VIN = 2.4 V, VOUT = 3.3 V, PWM mode)
- Output OVP threshold: 4.35 V typ (4.15–4.60 V), 0.1 V hysteresis
- Thermal shutdown: 150 °C typ, 20 °C hysteresis
Features:
- 0.9 V maximum startup voltage; operates down to 0.5 V after startup
- IOUT > 1.5 A at VOUT = 3.3 V when VIN > 1.8 V
- PFM power-save mode at light load
- True disconnection between input and output during shutdown
- Pass-through operation when VIN exceeds the set output voltage
- Output overvoltage, output short-circuit and thermal shutdown protection
- Internal loop compensation
- ±2.5% reference voltage accuracy over -40 to 125 °C
Applications:
- Battery powered IoT devices
- Gaming control
- Thermostat
- Portable medical equipment
- Supercap backup system
Package:
- WSON-8 (DSG), 2.00 mm x 2.00 mm, with thermal pad
TPS61021ADSGR Features
- 1 · Input Voltage Range: 0.5 V to 4.4 V
- 0.9 V Minimum Input Voltage for Startup
- Output Voltage Setting Range: 1.8 V to 4.0 V
- 91% Efficiency at VIN = 2.4 V, VOUT = 3.3 V and IOUT = 1.5 A
- 2.0-MHz Switching Frequency
- IOUT > 1.5 A at VOUT = 3.3 V when VIN > 1.8 V
- 17-μA Typical Quiescent Current
- ±2.5% Reference Voltage Accuracy over -40°C to 125°C
- PFM Operation Mode at Light Load
- True Disconnection Between Input and Output During Shutdown
- Output Over Voltage Protection
- Output Short Circuit Protection
- Thermal Shutdown Protection
- 2-mm x 2-mm WSON Package
TPS61021ADSGR Applications
- Battery Powered IoT Devices
- Gaming Control
- Thermostat
- Portable Medical Equipment
- Supercap Backup System
TPS61021ADSGR Pin Configuration
DSG Package 8-Pin WSON with Thermal Pad Top View
TPS61021ADSGR Electrical Characteristics
TJ = -40°C to 125°C, VIN = 2.4 V and VOUT = 3.3 V. Typical values are at T J = 25°C (unless otherwise noted)
| PARAMETER | PARAMETER | TEST CONDITIONS | MIN | TYP | MAX | UNIT |
|---|---|---|---|---|---|---|
| POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY | POWER SUPPLY |
| V IN | Input voltage range | 0.5 | 4.4 | V | ||
| V IN rising | 0.8 | 0.9 | V | |||
| V IN_UVLO | Under-voltage lockout threshold | V IN falling | 0.28 | 0.4 | 0.5 | V |
| I | Quiescent current into VIN pin | IC enabled, No load, No switching V IN = 1.8 V to 3.6 V, V FB = V REF + 0.1 V, T J up to 85°C | 3.0 | μA | ||
| Q | Quiescent current into VOUT pin | IC enabled, No load, No switching V OUT = 1.8 V to 4.0 V, V FB = V REF + 0.1 V, T J up to 85°C | 17 | 30 | μA | |
| I SD | Shutdown current into VIN and SW pin | IC disabled, V IN = 1.8 V to 3.6 V, T J up to 85°C | 0.5 | 3.0 | μA | |
| OUTPUT | OUTPUT | OUTPUT | OUTPUT | OUTPUT | OUTPUT | OUTPUT |
| V OUT | Output voltage setting range | 1.8 | 4.0 | V | ||
| PWM mode | 775 | 795 | 815 | mV | ||
| V REF | Reference voltage at the FB pin | PFM mode | 801 | mV | ||
| V OVP | Output over-voltage protection threshold | V OUT rising | 4.15 | 4.35 | 4.60 | V |
| V OVP_HYS | Over-voltage protection hysteresis | 0.1 | V | |||
| I FB_LKG | Leakage current at FB pin | 20 | nA | |||
| I SW_LKG | Leakage current into SW pin | IC disabled, T J up to 85°C | 3.0 | μA | ||
| I VOUT_LKG | Leakage current into VOUT pin | IC disabled, V OUT = 4.0 V, T J up to 85°C | 1 | 2 | μA | |
| POWER SWITCH | POWER SWITCH | POWER SWITCH | POWER SWITCH | POWER SWITCH | POWER SWITCH | POWER SWITCH |
| R DS(on) | High-side MOSFET on resistance | V OUT = 3.3 V | 51 | m Ω | ||
| Low-side MOSFET on resistance | V OUT = 3.3 V | 58 | m Ω | |||
| f SW | Switching frequency | V IN = 2.4 V, V OUT = 3.3 V, PWM mode | 2.0 | MHZ | ||
| t OFF_min | Minimum off time | 80 | 120 | ns | ||
| I LIM_SW | Valley current limit | V IN = 2.4 V, V OUT = 3.3 V | 3.0 | 4.3 | A | |
| LOGIC INTERFACE | LOGIC INTERFACE | LOGIC INTERFACE | LOGIC INTERFACE | LOGIC INTERFACE | LOGIC INTERFACE | LOGIC INTERFACE |
| V EN_H | EN Logic high threshold | V IN > 1.2 V V IN ≤ 1.2 V | 0.84 0.7 x V IN | V V | ||
| V EN_L | EN Logic Low threshold | V IN > 1.2 V V IN ≤ 1.2 V | 0.36 0.3 x VIN | V | ||
| PROTECTION | PROTECTION | PROTECTION | PROTECTION | PROTECTION | PROTECTION | PROTECTION |
| T SD | Thermal shutdown threshold | T J rising | 150 | °C | ||
| T SD_HYS | Thermal shutdown hysteresis | T J falling below T SD | 20 | °C |
TPS61021ADSGR Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted) (1)
| MIN | MAX | UNIT | |||
|---|---|---|---|---|---|
| Voltage range at terminals | EN, FB | DC | -0.3 | 3.6 | V |
| (2) | VIN, SW, VOUT | DC | -0.3 | 4.6 | V |
| 10% duty cycle | -0.3 | 4.8 | V | ||
| Operating junction temperature, T J | -40 | 150 | °C | ||
| Storage temperature, T stg | -65 | 150 | °C |
TPS61021ADSGR Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted)
| MIN | NOM | MAX | UNIT | |||
|---|---|---|---|---|---|---|
| V IN | Input voltage range | Input voltage range | 0.5 | 4.4 | V | |
| V OUT | Output voltage setting range | Output voltage setting range | 1.8 | 4.0 | V | |
| L | Effective inductance range | Effective inductance range | 0.2 | 0.47 | 1.3 | μH |
| C IN | Effective input capacitance range | Effective input capacitance range | 1.0 | 4.7 | μF | |
| C | OUT Effective | I OUT ≤ 0.3 A | 3.0 | 10 | 200 | μF |
| OUT Effective | I OUT > 0.3 A | 10 | 20 | 200 | μF | |
| T J | Operating junction temperature | Operating junction temperature | -40 | 125 | °C |
TPS61021ADSGR Thermal Information
| THERMAL METRIC | (1) | TPS61021A DSG (WSON) 8 PINS | UNIT |
|---|---|---|---|
| R θ JA | Junction-to-ambient thermal resistance | 71.1 | °C/W |
| R θ JC(top) | Junction-to-case (top) thermal resistance | 95.2 | °C/W |
| R θ JB | Junction-to-board thermal resistance | 41.6 | °C/W |
| ψ JT | Junction-to-top characterization parameter | 3.1 | °C/W |
| ψ JB | Junction-to-board characterization parameter | 42.0 | °C/W |
| R θ JC(bot) | Junction-to-case (bottom) thermal resistance | 13.0 | °C/W |
TPS61021ADSGR Typical Application
Copyright © 2016, Texas Instruments Incorporated
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 |
|---|---|---|
| TPS61021A | Texas Instruments | WSON-8 2x2mm |
| TPS61021ADSGT | Texas Instruments | WSON-8 2x2mm |
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