L4909 データシートの表示（PDF） - STMicroelectronics
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L4909 Datasheet PDF : 7 Pages
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L4909
ELECTRICAL CHARACTERISTCS (continued)
Symbol
Parameter
Test Condition
SVR2 REG2 supply voltage rejec.
freq=120 Hz to 1KHz
Vo3 REG3 output voltage range
V(FB3) REG3 feedback voltage
EN3=ON;
Ilim3 REG3 output current limit
EN3=ON; Vin-Vo3<12V
-∆-V--V---o--o-3--3-
line regulation
Io3=10mA; Vin-Vo3=3 to 25 V
Io3=10mA; Vin-Vo3=3 to 12 V
∆----V-----o---3-
Vo3
load regulation
Io3=10 mA to 1.2A
Io3=10 mA to 0.5A
Vd3 REG3 drop out
Io3=500mA
SVR3 REG3 supply voltage rejec.
freq=120 Hz to 1KHz
ENx enable input voltage
(active high)
STAND_BY
ON
Istby
ITRIG
current consumption in stand_by EN1=EN2=EN3≤0.5 V
current at TRIG output
SCR trigger circuit in ON state;
V(TRIG) = 2V
ZTRIG TRIG to GND impedance
SCR trigger circuit in OFF state
V(FB)_TR FBx voltage for trigger SCR on any regulator
I(FB) Feedback’s input current
any regulator
I(EN) EN’s input current
V(EN) = 5V
Ion current consumption in ON state one regulator ON; Vo = 12V
(current in the exter nal feedback resistors not
included)
two regulators ON; Vo = 12V
three regulators ON; Vo = 12V
V_OC_L current_warning output
voltage
warning conditions
Isink < 3 mA
I_OC_H current_warning leakage
no warning conditions
V(OC) = 15V
I_oc/Ilim warning threshold current / limit any regulator
current
Vin - Vout <12V
Min. Typ. Max. Unit
60
dB
5
12
V
1.22 1.27 1.32
V
1.20 1.70
A
0.6
2
%
0.1
0.5
2
%
0.1
2.20
V
60
dB
0.8
V
3.5
V
20
µA
25
mA
0.2
KΩ
1.52
V
2
µA
160
µA
11
mA
20
29
0.40
V
1
µA
0.6
4/7
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