AN938 Datasheet, PDF (24/33 Pages) STMicroelectronics – The L4973 family is a 3.5 A monolithic DC-DC converter

Typical application
AN938
Figure 33. Gain bode plot, open loop
85
74.5
64
53.5
43
32.5
22
11.5
1
9.5
20
0.1
1
10
100
1^.10³
1 ^.104
1 ^.105
1 ^.106
Frequency [Hz]
Figure 34. Phase bode plot, open loop
EXTERNAL LOOP GAIN PHASE
10
17.5
45
72.5
100
127.5
155
182.5
210
0.1
1
10
100
1^.10³
1 ^.104
1 ^.105
1 ^.106
Frequency [Hz]
AM03515v1
AM03516v1
Table 1. Bill of material (f_SW = 150 kHz, V_OUT = 5 V)
Reference
Description
Part number
R1
Resistor 15 kΩ 1%
R2
Resistor 15 kΩ 1%
R3
Resistor 2.7 kΩ 1%
R4
Resistor 4.99 kΩ 1%
R5
Not mounted
R6
Not mounted
R7
Not mounted
C1
Capacitor 2.7 nF 5%
Manufacturer
24/33
Doc ID 5410 Rev 10