E-L4971 STMicroelectronics, E-L4971 Datasheet - Page 9

• Manufacturer Part Number: E-L4971
• Description: Switching Converters, Regulators & Controllers 3.3 to 50V Step-Down
• Manufacturer: STMicroelectronics

Specifications of E-L4971

• Output Voltage: 3.5 V
• Mounting Style: Through Hole
• Package / Case: PDIP-8
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Figure 24. Load transient.
Figure 25. Line transient.
Figure 26. Soft start capacitor selection Vs
V
1
2
(µH)
(V)
30
20
10
400
300
200
100
CC
L
0
15 20 25 30 35 40 45 50 V
inductor and Vccmax.
1ms/DIV
fsw=100KHz
680nF
I
f
O
sw
= 1A
= 100KHz
D97IN786
220nF
470nF
100nF
330nF
D97IN745
CCmax
(mV)
-100
100
V
0
(V)
O
Figure 27. Soft start capacitor selection vs.
Figure 28. Open loop frequency and phase of
(µH)
GAIN
300
200
100
-100
-150
-200
(dB)
-50
50
L
0
0
10
15 20 25 30 35 40 45 50 V
Inductor and Vccmax
error amplifier
10
2
10
3
fsw=200KHz
10
4
10
5
10
6
Phase
GAIN
10
7
10
D97IN787
22nF
56nF
8
D97IN746
47nF
33nF
CC
f(Hz)
max(V)
Phase
135
45
90
0
L4971
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