L4978 STMicroelectronics, L4978 Datasheet - Page 10
![IC REG SW 2A STEP DOWN 8-DIP](/photos/1/39/13944/497-8-dip_sml.jpg)
L4978
Manufacturer Part Number
L4978
Description
IC REG SW 2A STEP DOWN 8-DIP
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet
1.L4978.pdf
(13 pages)
Specifications of L4978
Internal Switch(s)
Yes
Synchronous Rectifier
No
Number Of Outputs
1
Voltage - Output
3.3 ~ 50 V
Current - Output
2A
Frequency - Switching
100kHz ~ 300kHz
Voltage - Input
8 ~ 55 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Through Hole
Package / Case
8-DIP (0.300", 7.62mm)
Power - Output
1W
Output Voltage
50 V
Output Current
2 A
Input Voltage
8 V to 55 V
Switching Frequency
90 KHz to 110 KHz
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
Through Hole
Duty Cycle (max)
97 %
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-6701-5
E-L4978
E-L4978
L4978
E-L4978
E-L4978
L4978
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Manufacturer
Quantity
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L4978
3
Figure 29. DIP-8 Mechanical Data & Package Dimensions
10/13
Package Informations
DIM.
a1
b1
e3
e4
A
B
D
E
F
Z
b
e
L
I
0.356
0.204
MIN.
0.51
1.15
7.95
3.18
TYP.
3.32
2.54
7.62
7.62
mm
MAX.
0.304
10.92
1.65
0.55
9.75
5.08
3.81
1.52
6.6
0.020
0.045
0.014
0.008
0.313
0.125
MIN.
0.131
0.100
0.300
0.300
inch
TYP.
MAX.
0.065
0.022
0.012
0.430
0.384
0.260
0.200
0.150
0.060
MECHANICAL DATA
OUTLINE AND
DIP-8