L6920DTR
| Parameters | |
|---|---|
| Series | - |
| Moisture Sensitivity Level (MSL) | 3 (168 Hours) |
| RoHS Status | ROHS3 Compliant |
| Package / Case | 8-TSSOP (0.173", 4.40mm Width) |
| Mfr | STMicroelectronics |
| Mounting Type | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) |
| Voltage - Input (Max) | 5.5V |
| Output Type | Adjustable (Fixed) |
| Number of Outputs | 1 |
| Current - Output | 800mA (Switch) |
| Supplier Device Package | 8-TSSOP |
| Output Configuration | Positive |
| Function | Step-Up |
| Topology | Boost |
| Frequency - Switching | - |
| Synchronous Rectifier | Yes |
| Voltage - Output (Min/Fixed) | 1.8V (3.3V, 5V) |
| Voltage - Output (Max) | 5.5V |
| Voltage - Input (Min) | 0.6V |
| Package | Tape & Reel (TR) |
| Product Status | Active |
| Base Product Number | L6920 |
| REACH Status | REACH Unaffected |
| Standard Package | 4,000 |
| ECCN | EAR99 |
| HTSUS | 8542.39.0001 |
L6920DTR Synchronous Step-Up Converter
The L6920DTR is a high-efficiency, synchronous boost DC-DC converter from STMicroelectronics, optimized for battery-powered and space-constrained applications that demand a stable, adjustable output voltage from a low-input source. Integrating power MOSFETs and control circuitry in an 8-pin TSSOP-8 package (4.4 mm body width), the device accepts 0.6 V to 5.5 V on the input side, delivers 1.8 V to 5.2 V (fixed 3.3 V or 5 V options) at up to 800 mA switch current, and maintains up to 96 % peak efficiency thanks to synchronous rectification and a typical 10 µA quiescent draw. Internal compensation, soft-start, and cycle-by-cycle current limit simplify BOM, while –40 °C to +85 °C operation and battery-low detection ensure robust field performance.
L6920DTR Step-Up Converter Applications
1. Portable consumer: smartphones/tablets—boost 1-cell Li-Ion to 5 V USB OTG or 3.3 V for camera modules
2. Wearables: wireless headsets—convert 1.2 V NiMH to stable 3.3 V for Bluetooth SoC and audio CODEC
3. Industrial IoT: temperature/pressure sensor nodes—0.6 V start-up guarantees continuous data collection even when energy harvesters droop
3. Medical: pulse-oximeters or drug-delivery pumps—small footprint and low EMI suit body-worn designs
Communications: NB-IoT/LoRa modules—5 V/500 mA bursts for RF PA without external FETs
Alternative start-up boost converters
● TSM108IDT: STMicro 1.5 A boost, pin-compatible TSSOP-8, 0.9 V start, good drop-in upgrade when higher current needed
● L7986ATR: 3 A, 2.7-5.5 V input synchronous boost in QFN, ideal for 2-cell or high-power-density rails
● TPS61253: TI 1.3 A, 0.5 V start, adjustable 1.8-5.5 V output, similar package and BOM count
● MP3418: MPS 1 MHz, 0.9 V start, 1 A switch, QFN-8 for space-constrained wearables
