TPS61020DRCR - 1.5A 96% Efficient Boost Converter | DRC-10 | TI
Teilenummer: TPS61020DRCR ✓ Aktiv| Menge | Stückpreis | Gesamt |
|---|---|---|
| 1 | $2.85 | $2,85 |
| 10 | $2.56 | $25,60 |
| 100 | $2.27 | $227,00 |
| 500 | $2.04 | $1.020,00 |
| 1.000 | $1.82 | $1.820,00 |
| 3.000 | $1.61 | $4.830,00 |
TPS61020DRCR Übersicht
A boost (step-up) DC-DC converter is a switching power supply that stores energy in an inductor during the switch on-time and releases it into the output capacitor during the off-time, producing an output voltage higher than the input. Synchronous rectification replaces the traditional Schottky diode with a low-side MOSFET, which lowers conduction loss and lifts efficiency to 96 percent at moderate loads. The TPS61020DRCR belongs to the DC-DC converter > switching regulator > step-up regulator > power management IC hierarchy, and it is targeted at portable, battery-powered products where every milliwatt matters.
The headline specifications are 0.9 V to 6.5 V input, 1.8 V to 5.5 V adjustable output, 1.5 A internal switch current, 25 µA quiescent current, and a fixed switching frequency that enables small external magnetics. A key feature is the down-mode pass-through: when VIN is above VOUT the converter effectively behaves like an LDO, suppressing switching ripple on the output. The exposed thermal pad (PowerPAD) drops theta_JA substantially, allowing 1 A-plus continuous output without external heatsinking on a properly laid-out PCB.
Architecturally, the TPS61020 uses current-mode PWM control with pulse-skipping at light load to keep quiescent current near 25 µA. Its adjustable version sets VOUT through an external resistor divider tied to the FB pin, while fixed-output variants in the TPS6102x family ship at common rails. Anti-rejecting the synchronous rectifier at full duty in down-mode is a critical detail of the topology, and a small L-C output filter plus a ceramic input capacitor are sufficient for most applications.
Typical applications include single-cell Li-ion to 5 V boost supplies for USB OTG, three-cell alkaline or NiMH to 3.3 V rails for handheld meters, MP3 players and digital cameras, and any portable product that must down-convert seamlessly when a fresh battery sits above the regulated rail. Designers also use it in white-LED driver front-ends and small TFT bias generators.
When designing, select an inductor with low DCR (under 50 mΩ) and a saturation rating above 2 A; use X7R 10 µF ceramic capacitors on both VIN and VOUT placed within 2 mm of the package; and provide at least four thermal vias under the PowerPAD to the inner ground plane to keep junction temperature within ratings at full 1.5 A load.
This page synthesizes distributor pricing, parametric drop-in alternatives, and PCB layout notes drawn from the TI datasheet and DigiKey/Mouser listings - context that the bare datasheet does not present in one place.
Drop-in-Alternativen für TPS61020DRCR – gleiches Gehäuse, Pin-kompatibel. Bauteile mit anderem Gehäuse, die eine PCB-Überarbeitung erfordern, sind ausgeschlossen.
Schnellvergleichstool – Wählen Sie Alternativbauteile für den Direktvergleich:
TPS61029DRCR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS61025DRCR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS61021DRCR
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS61020DRCRG4
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS61026DRCTG4
✅ Drop-In📋 Referenzalternative (nicht im Katalog)
TPS61020DRCR Grenzwerte & elektrische Eigenschaften
| Topologie | Synchronous Boost (Step-Up) with Down-Mode pass-through |
| Eingangsspannungsbereich | 0.9 V to 6.5 V |
| Ausgangsspannungsbereich | 1.8 V to 5.5 V (Adjustable) |
| Switch Current (Internal) | 1.5 A |
| Wirkungsgrad | 96 % (typical at moderate load) |
| Ruhestrom | 25 µA (typical) |
| Betriebstemperaturbereich | -40 °C to +125 °C |
| Gehäuse | VSON-10 (DRC) 3 mm x 3 mm with PowerPAD |
| Montageart | Surface Mount |
| Pin-Anzahl | 10 |
| RoHS-Status | Compliant |
| Lead-Free | Yes |
| Ausgangstyp | Adjustable (external resistor divider) |
TPS61020DRCR Pin-Konfiguration
| Pin 1 | EN — Enable input (active high, pull high to enable) |
| Pin 2 | VIN — Input supply voltage (0.9 V to 6.5 V) |
| Pin 3 | SW — Switch node - connects to external inductor |
| Pin 4 | PGND — Power ground - return for switch currents |
| Pin 5 | AGND — Analog ground - quiet return for FB reference |
| Pin 6 | FB — Feedback (voltage sense for adjustable version) |
| Pin 7 | VOUT — Regulated output voltage |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | NC — Not connected (per datasheet) |
| Pin 10 | NC — Not connected (per datasheet) |
Typische Anwendungen
TPS61020DRCR ist geeignet für 6 Anwendungs: Single-Cell Li-Ion to 5 V USB OTG Power Supply, Three-Cell Alkaline/NiMH to 3.3 V Portable Meter Supply, MP3 Player / Digital Camera 5 V Bias Supply, White-LED Driver Front-End (Li-Ion to 5 V Bias), Small TFT-LCD Bias Generator (1.8 V VLOGIC + 5 V Analog), IoT Sensor Node Battery Booster (Coin Cell to 3.3 V).
Single-Cell Li-Ion to 5 V USB OTG Power Supply
The TPS61020DRCR boosts a single-cell Li-ion battery (2.7 V-4.2 V) to a stable 5 V rail for USB OTG, HDMI, or other 5 V peripherals. Its 0.9 V minimum input cold-crank margin lets the rail stay alive as the cell discharges, and synchronous rectification holds efficiency above 90% at 200-500 mA. The down-mode pass-through feature prevents output overshoot when a fresh 4.2 V cell sits above the 5 V target. Designers typically pair the part with a 4.7 µH inductor and 10 µF X7R ceramic capacitors on VIN and VOUT, all placed within 2 mm of the package for stable switching.
Empfohlen
Three-Cell Alkaline/NiMH to 3.3 V Portable Meter Supply
Portable digital multimeters and handheld instruments powered by 3-cell AA batteries use the TPS61020DRCR to step up the ~3 V-4.5 V battery stack to a regulated 3.3 V rail for MCUs, ADCs, and LCD displays. The 96% peak efficiency extends battery life by 30-40% versus older diode-rectified boost converters. The 25 µA quiescent current keeps standby draw minimal for always-on instrumentation, and the -40 °C to +125 °C operating range supports outdoor and industrial field-metering environments.
Empfohlen
MP3 Player / Digital Camera 5 V Bias Supply
Consumer audio and imaging products powered by a single-cell Li-ion use the TPS61020DRCR to generate 5 V bias rails for audio amplifiers, white-LED flash drivers, and small TFT-LCD panels. The part's 1.5 A switch rating delivers up to 500-700 mA continuous at 5 V from a typical 3.7 V battery, which is sufficient for LED flash and audio Class-D amplifier supply. Down-mode pass-through eliminates switching ripple at high battery charge, which is critical for audio SNR. The 3 mm x 3 mm VSON PowerPAD footprint fits beneath the battery connector on space-constrained PCBs.
Empfohlen
White-LED Driver Front-End (Li-Ion to 5 V Bias)
Flash LED drivers in camera phones and flashlights typically require a 5 V bias rail above the Li-ion cell voltage. The TPS61020DRCR provides the front-end boost, then a downstream current regulator like the TPS61150 or LED driver sinks the regulated current through the LED string. The synchronous rectification prevents the inductor from dissipating excess energy during flash-off decay, and the 1.5 A switch supports flash currents up to 200-300 mA on the 5 V rail. The exposed thermal pad keeps junction temperature under 85 °C even at continuous flash duty.
Empfohlen
Small TFT-LCD Bias Generator (1.8 V VLOGIC + 5 V Analog)
Small TFT-LCD panels in wearables and IoT displays need separate analog (5 V) and logic (1.8 V) rails. The TPS61020DRCR generates the 5 V analog rail, while a second LDO or another TPS6102x variant generates 1.8 V logic. The 0.9 V minimum input lets the same boost converter run from a deeply discharged Li-ion cell during cold-start, ensuring the panel initializes cleanly. Pulse-skipping mode keeps quiescent current near 25 µA when the display is in standby, extending wearable battery life by tens of hours.
Empfohlen
IoT Sensor Node Battery Booster (Coin Cell to 3.3 V)
IoT sensor nodes powered by CR2032 or CR2477 coin cells (3 V nominal, falling to 2 V) use the TPS61020DRCR to generate a stable 3.3 V rail for sub-GHz transceivers and sensors. The 0.9 V cold-start margin is not strictly required here, but the 96% efficiency and 25 µA quiescent current dramatically extend coin-cell service life. Down-mode pass-through lets the device run directly from the battery when the cell is fresh, eliminating switching losses. The VSON PowerPAD fits inside an 8 mm x 8 mm sensor PCB, making it ideal for size-constrained IoT nodes.
Empfohlen
Zusammenfassung der empfohlenen Produkte
Technische Referenzdaten für TPS61020DRCR – Vergleich, Designhinweise und Compliance-Informationen.
Auswahlhilfe
Vergleich mit Alternativen
| Parameter | Dieses Produkt | TPS61029DRCR | TPS61025DRCR | TPS61021DRCR | TPS61026DRCTG4 |
|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VSON-10 (DRC) 3x3 mm | VSON-10 (DRC) 3x3 mm - same | VSON-10 (DRC) 3x3 mm - same | VSON-10 (DRC) 3x3 mm - same | VSON-10 (DRC) 3x3 mm - same |
| Topology | Synchronous Boost with Down-Mode | Synchronous Boost with Down-Mode | Synchronous Boost with Down-Mode | Synchronous Boost with Down-Mode | Synchronous Boost with Down-Mode |
| Input Voltage Range | 0.9 V to 6.5 V | 0.9 V to 6.5 V | 0.9 V to 6.5 V | 0.9 V to 6.5 V | 0.9 V to 6.5 V |
| Output Voltage | 1.8 V to 5.5 V (Adjustable) | 1.8 V to 5.5 V (Adjustable) | 5.0 V (Fixed) | 1.8 V (Fixed) | 3.3 V (Fixed) |
| Switch Current | 1.5 A | 1.8 A (+20%) | 1.5 A (same) | 1.5 A (same) | 1.5 A (same) |
| Peak Efficiency | 96% | 96% | 96% | 96% | 96% |
| Quiescent Current | 25 µA | 25 µA | 25 µA | 25 µA | 25 µA |
| Operating Temperature | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C | -40 °C to +125 °C |
Wichtigste Unterscheidungsmerkmale
- Higher switch current within the same VSON-10 footprint (vs. TPS61025DRCR)
- Adjustable output vs fixed rails (vs. TPS61021DRCR)
- Lower quiescent current than discrete boost solutions (vs. TPS61026DRCTG4)
- Wider output range than higher-current sibling (vs. TPS61029DRCR)
Designhinweise
Select an inductor with low DC resistance (under 50 mΩ), 4.7 µH nominal value, and saturation current rating above 2 A (1.5× the switch rating). Lower DCR improves efficiency by 1-2% at heavy loads. Coilcraft XAL4030 or equivalent Würth WE-LHMI inductors are recommended for the TPS61020DRCR. Place the inductor within 2 mm of the SW pin to minimize parasitic loop area and radiated EMI.
Use X7R ceramic capacitors rated 10 µF / 16 V on both VIN and VOUT, placed within 2 mm of the package pins. Provide a 0.1 µF ceramic decoupling capacitor directly on VIN adjacent to pin 2 for high-frequency noise. The exposed PowerPAD must be soldered to a copper ground pad with at least 4 thermal vias to the inner ground plane; failure to do this can raise junction temperature 30 °C-40 °C and trigger thermal shutdown at full load.
Do not exceed the absolute maximum VIN of 7 V above this range (per datasheet abs-max). For the adjustable TPS61020DRCR, use 1% tolerance resistors on the FB divider to maintain output voltage accuracy; do not use 5% parts in production designs. The EN pin is not internally pulled - tie it high to VIN through a 100 kΩ resistor for always-on operation. Avoid routing analog signals (FB, AGND) near the SW node to prevent noise injection into the feedback loop.
Compliance-Informationen
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified - select TPS61230 or TPS61240 family for AEC-Q100 needs. Lead-free confirmed; halogen-free status not explicitly listed in verified web data.
