L4973D5.1 STMicroelectronics, L4973D5.1 Datasheet
L4973D5.1
Specifications of L4973D5.1
Available stocks
Related parts for L4973D5.1
L4973D5.1 Summary of contents
Page 1
Features ■ 3.5A step down converter ■ Operating input voltage from 8V to 55V ■ 3.3V and 5.1V (±1%) fixed output, and adjustable outputs from: – 0.5V to 50V (3.3 type) – 5.1V to 50V (5.1 type) ■ ...
Page 2
L4973 3 Electrical data 3.1 Maximum ratings Table 2. Absolute maximum ratings Symbol DIP-18 S0- ...
Page 3
Electrical characteristics 4 Electrical characteristics Table 4. Electrical characteristics (Refer to the test circuit,V unless otherwise specified) Symbol Parameter Dynamic characteristics Input Voltage Range Output Voltage L4973V5.1 Output Voltage L4973V3.3 R DS(on ) Maximum Limiting Current η Efficiency Switching Frequency ...
Page 4
L4973 Table 4. Electrical characteristics (continued) (Refer to the test circuit,V unless otherwise specified) Symbol Parameter Soft start Soft Start Charge Current Soft Start Discharge Current Inhibit High Level Voltage Low Level Voltage I High Level source I Low Level ...
Page 5
Electrical characteristics Table 4. Electrical characteristics (continued) (Refer to the test circuit,V unless otherwise specified) Symbol Parameter Ramp peak Maximum Duty Cycle Maximum Frequency Sync function High Input Voltage Low Input Voltage Slave Sink Current Master Output Amplitude Output Pulse ...
Page 6
Package mechanical data Table 7. SO-20 mechanical data Dim. Min A 2.35 A1 0.10 B 0.33 C 0.23 D 12.60 ( 10.0 h 0.25 L 0.40 k ddd Figure 46. Package dimensions 24/27 mm. Typ Max ...
Page 7
... L4973 10 Order code Table 8. Order code L4973D3.3, E-L4973D3.3 L4973D3.3-013TR, E-L4973D3.3-TR L4973D5.1-013TR L4973V3.3, E-L4973V3.3 L4973V5.1, E-L4973V5.1 Part number L4973D5.1 Order code Package Packaging SO-20 Tube SO-20 Tape and reel SO-20 Tube SO-20 Tape and reel DIP-18 Tube DIP-18 Tube 25/27 ...