L200 Datasheet, PDF (4/12 Pages) STMicroelectronics – ADJUSTABLE VOLTAGE AND CURRENT REGULATOR

L200
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Conditions
Min.
∆V_ref
Average Temperature Coefficient
of Reference Voltage
V_i = 20 V
Io = 10mA
for Tj = - 25 to 125 °C
for Tj = 125 to 150 °C
Typ.
-0.25
-1.5
Max. Unit
mV/°C
mV/°C
I₄
∆ I₄
∆ T • I4
Z_o
Bias Current and Pin 4
Average Temperature
Coefficient (pin 4)
Output Impedance
V_i = 10 V
I_o = 0.5 A
V_o = V_ref
f = 100 Hz
3
10
µA
-0.5
%/°C
1.5
mΩ
CURRENT REGULATION LOOP
V_SC
∆ V_SC
∆ T • V_SC
Current Limit Sense Voltage
between Pins 5 and 2
Average Temperature
Coefficient of V_SC
V_i = 10 V
I₅ = 100 mA
V_o = V_ref
0.38 0.45 0.52
V
0.03
%/°C
∆ I_o
Current Load Regulation
I_o
Vi = 10 V
I_o = 0.5 A
I_o = 1A
I_o = 1.5 A
∆Vo = 3V
1.4
%
1
%
0.9
%
I_SC
Peak Short Circuit Current
V_i - V₀ = 14 V
(pins 2 and 5 short circuited)
3.6
A
Note 1: A load step of 2 A can be applied provited that input-output differential voltage is lower than 20 V (see Figure 3).
Note 2: The same performance can be maintained at higher output levels if a bypassing capacitor is provited between pins 2 and 4.
Figure 3. Typical Safe Operating Area
Protection.
Figure 4. Quiescent Current vs. Supply
Voltage.
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