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E-L4973D3.3 View Datasheet(PDF) - STMicroelectronics

Part NameDescriptionManufacturer
E-L4973D3.3 3.5A step down switching regulator ST-Microelectronics
STMicroelectronics ST-Microelectronics
E-L4973D3.3 Datasheet PDF : 27 Pages
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Electrical characteristics
L4973
Table 4. Electrical characteristics (continued)
(Refer to the test circuit,VCC = 24V; TJ = 25°C, COSC = 2.7nF; ROSC = 20K;
unless otherwise specified)
Symbol
Parameter
Test condition
Min Typ Max Unit
Ramp peak
VCC = 8V
VCC = 55V
1.9 2.1 2.3 V
9 9.6 10.2 V
Maximum Duty Cycle
95 97
%
Maximum Frequency
Duty Cycle = 0%;
ROSC =13K; COSC = 820pF;
300 KHz
Sync function
High Input Voltage
VCC = 8V to 55V
Low Input Voltage
VCC = 8V to 55V
Slave Sink Current
Master Output
Amplitude
Isource = 3mA
Output Pulse Width
no load, Vsync = 4.5V
1. Pulse testing with a low duty cycle
2. Specifications referred to TJ from -40°C to 125°C.
3.5
V
0.9 V
0.15 0.25 0.45 mA
4 4.5
V
0.20 0.35
µs
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