E-L4978D STMicroelectronics, E-L4978D Datasheet - Page 3
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E-L4978D
Manufacturer Part Number
E-L4978D
Description
IC REG SW 2A STEP DOWN 16-SOIC
Manufacturer
STMicroelectronics
Type
Step-Down (Buck)r
Datasheet
1.L4978.pdf
(13 pages)
Specifications of E-L4978D
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
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Table 3. Pin Description (continued)
(*) Pins 1, 7, 8, 9, 10, 15 and 16 are not internally, electrically connected to the die.
Table 4. Thermal Data
(*) Package mounted on board.
Table 5. Absolute Maximum Ratings
R
Symbol
Minidip
V
th(j-amb)
N°
4
5
6
7
8
V
6
V
V
V
V
V
I
-V
4
4
8
5
6
7
2
Symbol
5
T
j
P
,T
tot
stg
Thermal Resistance Junction to ambient
5, 6
V
Pin
11
12
13
14
V
S016
12
V
V
I
5
V
V
5
V
,
11
13
-V
,I
12
14
V
3
6
6
11
COMP
BOOT
Name
Input voltage
Output DC voltage
Output peak voltage at t = 0.1ms f=200KHz
Maximum output current
Bootstrap voltage
Analogs input voltage (V
Analogs input voltage (V
(VCC= 20V)
Power dissipation a Tamb ≤ 60°C
Junction and storage temperature
OUT
V
FB
CC
Stepdown regulator output
Unregulated DC input voltage
A capacitor connected between this pin and OUT allows to drive the internal DMOS
Transistors
E/A output to be used for frequency compensation
Stepdown feedback input. Connecting directly to this pin results in an output voltage
of 3.3V. An external resistive divider is required for higher output voltages.
Parameter
CC
CC
= 24V)
= 24V)
Parameter
Function
Max.
DIP-8
SO16
Minidip
90 (*)
-40 to 150
Value
-0.3
0.8
58
14
-1
-5
70
12
13
1
6
110 (*)
SO16
int. limit.
Unit
W
W
°C
L4978
°C/W
V
V
V
V
V
V
V
V
V
Unit
3/13