E-L4971D013TR STMicroelectronics, E-L4971D013TR Datasheet - Page 9
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E-L4971D013TR
Manufacturer Part Number
E-L4971D013TR
Description
IC REG STEP DOWN 1.5A 16-SOIC
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet
1.L4971D013TR.pdf
(13 pages)
Specifications of E-L4971D013TR
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
3.3 ~ 50 V
Current - Output
1.5A
Frequency - Switching
100kHz ~ 300kHz
Voltage - Input
8 ~ 55 V
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.300", 7.5mm Width)
Power - Output
800mW
Output Voltage
3.5 V
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-4557-2
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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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