EVAL5973D STMicroelectronics, EVAL5973D Datasheet - Page 12

• Manufacturer Part Number: EVAL5973D
• Description: EVAL BOARD FOR L5973 SERIES
• Manufacturer: STMicroelectronics
• Type: DC/DC Switching Converters, Regulators & Controllersr

Specifications of EVAL5973D

• Design Resources: EVAL5973D/L5973D Gerber Files
• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Non-Isolated
• Voltage - Output: 1.235 ~ 35V
• Current - Output: 2.5A
• Voltage - Input: 4.4 ~ 36V
• Regulator Topology: Buck
• Frequency - Switching: 250kHz
• Board Type: Fully Populated
• Utilized Ic / Part: L5973
• Input Voltage: 4.4 V to 36 V
• Output Voltage: 1.2 V to 35 V
• Board Size: 23 mm x 20 mm
• Product: Power Management Modules
• Dimensions: 23 mm x 20 mm
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• For Use With/related Products: L5973D
• Other names: 497-4134

Application ideas
12/17
When an output voltage below the internal reference (1.235 V) is required, the circuit
reported in the figure 18 can been used. In this case the minimum voltage reachable is 0.6 V
and can be easily calculated with the following formula:
V
If the load is not present, a resistor connected between V
to avoid that the voltage across C
The value of this resistor has to be calculated taking into account that the current flowing
through this resistance has to be higher than the current flowing through R
Figure 19. Output voltage below the 1.235 V internal voltage reference
OUT
= V
FB
- [(V
REF
- V
FB
)x(R
2
/ R
OUT
1
)]
increases.
OUT
and GND is required in order
2
.
L5973D