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E-L4960 Datasheet(PDF) 2 Page - STMicroelectronics

Part No. E-L4960
Description  2.5A POWER SWITCHING REGULATOR
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Maker  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
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PIN CONNECTION (Top view)
2/16
N
°
NAME
FUNCTION
1
SUPPLY VOLTAGE
Unregulated voltage input. An internal regulator powers the
internal logic.
2
FEEDBACK INPUT
The feedback terminal of the regulation loop. The output is
connected directly to this terminal for 5.1V operation; it is
connected via a divider for higher voltages.
3
FREQUENCY
COMPENSATION
A series RC network connected between this terminal and
ground determines the regulation loop gain characteristics.
4
GROUND
Common ground terminal.
5
OSCILLATOR
A parallel RC network connected to this terminal determines the
switching frequency.
6
SOFT START
Soft start time constant. A capacitor is connected between this
terminal and ground to define the soft start time constant. This
capacitor also determines the average short circuit output
current.
7
OUTPUT
Regulator output.
PIN FUNCTIONS
Symbol
Parameter
Value
Unit
V1
Input voltage
50
V
V1 - V7
Input to output voltage difference
50
V
V7
Negative output DC voltage
-1
V
Negative output peak voltage at t = 0.1
µs; f = 100KHz
-5
V
V3, V6
Voltage at pin 3 and 6
5.5
V
V2
Voltage at pin 2
7V
I3
Pin 3 sink current
1
mA
I5
Pin 5 source current
20
mA
Ptot
Power dissipation at Tcase
≤ 90°C15
W
Tj, Tstg
Junction and storage temperature
-40 to 150
°C
ABSOLUTE MAXIMUM RATINGS
L4960




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