L200 查看數據表（PDF） - STMicroelectronics

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L200

ADJUSTABLE VOLTAGE AND CURRENT REGULATOR

STMicroelectronics 

L200

ELECTRICAL CHARACTERISTICS (continued)

Symbol

Parameter

Test Conditions

Min.

∆Vref

Average Temperature Coefficient

of Reference Voltage

Vi = 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

Zo

Bias Current and Pin 4

Average Temperature

Coefficient (pin 4)

Output Impedance

Vi = 10 V

Io = 0.5 A

Vo = Vref

f = 100 Hz

3

10

µA

-0.5

%/°C

1.5

mΩ

CURRENT REGULATION LOOP

VSC

∆ VSC

∆ T • VSC

Current Limit Sense Voltage

between Pins 5 and 2

Average Temperature

Coefficient of VSC

Vi = 10 V

I5 = 100 mA

Vo = Vref

0.38 0.45 0.52

V

0.03

%/°C

∆ Io

Current Load Regulation

Io

Vi = 10 V

Io = 0.5 A

Io = 1A

Io = 1.5 A

∆Vo = 3V

1.4

%

1

%

0.9

%

ISC

Peak Short Circuit Current

Vi - 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.

4/12

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