L5980 Datasheet, PDF (5/37 Pages) STMicroelectronics – 0.7A step-down switching regulator

Electrical characteristics
3
Electrical characteristics
L5980
T_J=25°C, V_CC=12V, unless otherwise specified.
Table 3. Electrical characteristics
Symbol
Parameter
Test condition
V_CC
Operating input voltage ₍₁₎
range
V_CCON Turn on V_CC threshold
(1)
V_CCOFF Turn off V_CC threshold
(1)
R_DSON Mosfet on resistance
(1)
I_LIM
Maximum limiting current
Oscillator
F_SW Switching frequency
(1)
V_FSW
D
F_ADJ
FSW pin voltage
Duty Cycle
Adjustable switching
frequency
Dynamic characteristics
R_FSW=33kΩ
V_FB Feedback voltage
DC characteristics
2.9V<V_CC<18V
I_Q
I_QST-BY
Quiescent current
Total stand-by quiescent
current
Duty Cycle=0,
V_FB=0.8V
Inhibit
INH threshold voltage
INH current
Device ON level
Device OFF level
INH=0
Soft start
T_SS Soft start duration
F_SW=Floating
F_SW=1MHz,
R_FSW=33kΩ
Values
Unit
Min Typ Max
2.9
18
2.9
V
2.4
x
150
x
mΩ
150 300
1.0 1.3 1.6
A
225 250 275
kHz
x
250
x
1.262
V
0
100
%
1000
kHz
0.593 0.6 0.607 V
2.4 mA
20
30
µA
0.6
V
1.9
7.5
10
µA
7.4 8.2 9.1
ms
2
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