ADJUSTABLE OUTPUT CURRENT UP TO 2 A
(GUARA NTEED UP TO T
ADJUSTABLE OUTPUT VOLTAGE DOWN TO
2.85 V
INPUT OVERVOLTAGE PROTECTION (UP TO
60 V, 10 ms)
SHORT CIRCUIT PROTECTION
OUTPUT TRANSISTOR S.O.A. PROTECTION
THERMA L OVERLOAD PRO T ECTION
LOW BIAS CURRENT ON REGULATION PIN
LOW STANDBY CURRENT DRAIN
DESCRIPTION
The L200 is a monolithic integrated circuit for voltage and current programmable regulation. It is
available in Pentawatt
metal case. Current limiting, power limiting, thermal
shutdown and input over voltage protection (up to
= 150 °C)
j
®
package or 4-lead TO-3
L200
Pentawatt
60 V) make the L200 virtually blow-out proof.
The L200 can be used to replace fixed voltage
regulators when high output voltage precision is
required and eliminates the need to stock a range
of fixed voltage regulators.
®
TO-3 (4 lead)
ABSOLUTE MAXIMUM RATINGS
SymbolParameterV alueUnit
DC Input Voltage40V
V
i
V
Peak Input Voltage (10 ms)60V
i
Dropout V oltage32V
V
∆
i-o
Output Currentinternally limited
I
o
P
Power Dissipationinternally limited
tot
Storage Temperature-55 to 150
T
stg
Operating Junction Temperature for L200C-25 to 150
APPLICATION CIRCUITS
Figure 1. Programmable Voltage Regulator
with Current Limiting
2/12
Figure 2. Programmable Current Regulator.
SCHEMATIC DIA G RAM
L200
= 25 °C, unless otherwise specified)
ELECTRICAL CHARACTERISTICS
(T
amb
SymbolParameterTest ConditionsMin.Typ.Max.Unit
VOLTAGE REGULATION LOOP
I
Quiescent drain Current (pin 3)Vi = 20 V4.29.2mA
d
e
Output Noise VoltageVo = Vref Io = 10 mA
N
V
Output V ol tage RangeIo = 10 mA2.8536V
o
V
∆
o
V oltage Load Regulation
(note 1)
V
o
V
∆
i
Line RegulationV0 = 5 V
V
∆
o
SVRSupply V ol tage Rejectio n
Droupout V oltage between Pins 1
V
∆
i-o
and 5
V
Reference Voltage (pin 4)Vi = 20 V Io = 10 mA2.642.772.86V
ref
B = 1 MHz80
Io = 2 A
∆
= 1.5 A
I
∆
o
V
= 8 to 18 V4860dB
i
V
= 5 V Io = 500 mA
0
= 10 V
V
∆
i
f = 100 Hz (note 2)
pp
I
= 1.5 A
o
∆
V0 ≤ 2%
4860dB
0.15
0.1
22.5V
1
0.9
µ
V
%
%
3/12
L200
ELECTRICAL CHARACTERISTICS
(continued)
SymbolParameterTest ConditionsMin.Typ.Max.Unit
= 20 V Io = 10mA
V
∆
I
4
I
∆
T
∆
Z
o
Aver age Temper ature Coeffici ent
ref
of Reference Voltage
Bias Current and Pin 4310
Aver age Temperature
4
Coefficient (pin 4)
•
I
4
Output ImpedanceVi = 10 V Vo = V
V
i
for Tj = - 25 to 125 °C
for Tj = 125 to 150 °C
Io = 0.5 A f = 100 Hz
ref
-0.25
-1.5
-0.5
1.5
CURRENT REGULATION LOOP
V
SC
V
∆
T
∆
•
I
∆
I
o
Current Limit Sense V olta ge
between Pins 5 and 2
SC
Aver age Temper ature
Coefficient of V
V
SC
o
Current Load Regulation
SC
Vi = 10 V Vo = V
ref
I5 = 100 mA0.380.450.52V
0.03
Vi = 10 V ∆Vo = 3V
= 0.5 A
I
o
I
= 1A
o
I
= 1.5 A
o
1.4
1
0.9
mV/°C
mV/°C
A
µ
C
%/°
m
Ω
C
%/°
%
%
%
I
SC
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.
Peak Short Circuit CurrentVi - V0 = 14 V
(pins 2 and 5 short circuited)
3.6A
Figure 4. Quiescent Current vs. Supply
Vo ltage.
4/12
L200
Figure 5. Quiescent Current vs. Junction
Voltage.
Figure 7. Output Noise V oltage vs. Output
Voltage.
Figure 6. Quiescent Current vs. Output
Current.
Figure 8. Output Noise Voltage vs.
Frequency.
Figure 9. Reference Voltage vs. Junction
Temperature.
Figure 10. Voltage Load Regulation vs.
Junction T emperature.
5/12
L200
Figure 11. Supply Voltage Rejection vs.
Frequency.
Figure 13. Output Impedance vs.
Frequency.
Figure 12. Dropout Voltage vs . Junction
Temperature.
APPLICATIONS CIRCUITS
Figure 19. - Programmable Voltage Regulator
Figure 18. Current Limit Sense Voltage vs.
Junction T emperature.
Figure 20. - P.C. Board and Components Layout
of Figure 19.
Figure 21. - High Current V oltage Regulator with
Short Circuit Protection.
Figure 22. - Digitally Selected Regulator with
Inhibit.
7/12
L200
Figure 23. Pr o grammab le Vo ltage and Curren t Regulator.
: Connecting point A to a negative voltage (for example - 3V/10 mA) it is possible to extend the output voltage
Note
range down to 0 V and obtain the current limiting down to this level (output short-circuit condition).
Figure 24. High Current Regulator with NPN
Pass T ransistor .
Figure 25. High Current Tracking Regualtor.
8/12
L200
Figure 26. High Input and Output Voltage.
Figure 28. 30 W Motor Speed Control.
Figure 27. Constant Current Battery Charger.
The resistors R1 and R2 determine the final charging voltage and R
charge of the battery throught the regulator.
The resistor RL limits the reverse currents through ther
regulator (which should be 100 mA max) when the battery is accidentally reverse connected. If R
with a bulb of 12 V/50 mA rating this will indicate incorrect connection.
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use of such information nor for any infringement of patents or other rights of third part i es which may result from its use. No license is granted
by implication or otherwise under any patent or patent ri ghts of STMicroelectronics. Specification mentioned in this publication are subjec t t o
change without not ice. This publication supersedes and repl aces all information pr eviously supplied. STMicroelectronics pr oducts are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
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