STMicroelectronics LHC7913-4 3 amp negative low drop voltage regulator Datasheet

LHC7913-4
3 AMP NEGATIVE LOW DROP VOLTAGE REGULATOR
DRAFT
DATA
WITH
INHIBIT
FEATURES:
x Low output capacitance: 1 µF
x Overtemperature protection
x Overcurrent protection
x Output short circuit monitoring, signalled by a
TTL-compatible output
x ON/OFF external control by means of
TTL-compatible input.
x Adjustable current limitation protects
outputs from damaging shortcircuits.
§
REMOTE SENSING OPERATION
15-Jul-03 - Rev. 1.1
GENERAL DESCRIPTION:
The LHC7913-4 is a negative Voltage
Regulator family including both fixed and
adjustable versions. Housed into Power SO-20
slug-up package. It is specifically intended for
applications in rugged environments, such as
Nuclear Physics, in which it has to withstand
large amounts of radiation doses during its
operating life.
Input voltage ranges from -3 to -9 volts.
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LHC7913- 4
ABSOLUTE MAXIMUM RATINGS (NOTE 1)
Symbol
Parameter
Value
Unit
Vminus
DC input voltage
-10
V
Vplus
input voltage
5
V
Vinh
INHIBIT input voltage
Vplus+ 0.3
V
Io
Output current
Internally limited
A
OPERATING CONDITIONS (NOTE 2)
Symbol
Vminus
Parameter
Value
DC input voltage
Unit
-9
V
2
ºC/W
Note 1. Exceeding the absolute maximum rating may damage the device
Note 2. The device is not guaranteed to function outside its operating rating.
THERMAL INFORMATIONS
Rthj-a
Thermal Resistance Junction-Ambient
Power So-20 slug-up
To
Operating junction temperature range
-40 to 150
ºC
TSTG
Storage Temperature Range
-40 to 150
ºC
PIN CONFIGURATION
Pin N°
SO-20 Pin Name
Pin Function
1
Vminus
Vminus
2
NC
NOT CONNECTED
3
NC
NOT CONNECTED
4
NC
NOT CONNECTED
5
SH-CNTRL SHORT CIRCUIT Control
6
OCM
OVER CURRENT MONITOR
7
VPlus
Voltage input for Ocm &
Inhibit state
8
NC
NOT CONNECTED
9
GND
COMMON GROUND
10
Vminus
Vminus
11
Vminus
Vminus
12
INH
INHIBIT
13
ADJ
ADJ (Adjustable version)
14
NC
NOT CONNECTED
15
VOUT
OUTPUT
16
VOUT
OUTPUT
17
NC
NOT CONNECTED
18
NC
NOT CONNECTED
19
NC
NOT CONNECTED
20
Vminus
Vminus
15-Jul-03 - Rev. 1.1
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LHC7913 - 4
ELECTRICAL CHARACTERISTICS:
Unless otherwise specified , Vin = Vout - 2.5 V, Vout =-3V, Vplus=3V,Tj =25°C, Cin = 1 µ F,
Cout = 1µ
µF
SYMBOL
VIN
PARAMETER
Operating input voltage
TEST CONDITIONS
Iout = 3A
Tj=-55° to 125° C
VOUT
Output voltage accuracy
Iout = 5mA
Tj=-55° to 125° C
VOUT
Operating output voltage
Iout= 3A
Tj=-55° to 125° C
Ishort
Output current limit
∆Vo/Vi
Line regulation
∆Vo/VoI Lo
Load regulation
Vplus
Quescent
current
Iq
(Vminus)
Quiescient current
Iq, Plus
Tj=-55° to 125° C
Vplus =3V
Quiescent Current,
Tj=-55° to 125° C
MIN
-3
MAX
-9
UNITS
V
-2
2
%
-1.21
-7
V
Adjustable
Vi=Vout-2.5 to -12V
Iout = 5mA
Iout = 5mA to 3A
3
4
Vi=Vout-2.5 to -12V, On mode Iout = 30 mA
5
6
Vi=Vout-2.5 to -12V, On mode Iout = 300 mA
20
35
Vi=Vout-2.5 to -12V, On mode Iout = 1 A
40
75
Vi=Vout-2.5 to -12V, On mode Iout =2 A
80
140
Vi=Vout-2.5 to -12V, On mode Iout =3 A
150
240
0.8
Tj=-55° to 125° C
0.6
1.2
Tj=-55° to 125° C
0.95
2
Iout =3 A,
Tj=-55° to 125° C
1.3
2.6
IINH
Shutdown input current
Cout
Output capacitance
15-Jul-03 - Rev. 1.1
0.4
Iout= 1 A,
Vin=Vout -2.5 ±0.5 V IOUT = 15mA
f=120 Hz
f= 33 Khz
2
0.8
Vplus =3V
VINH = 3V
Iout=0 to 3A
Iout=0 to 3A
mA
0.3
Iout= 2 A,
Supply voltage
rejection
en/Vout
µΑ
170
Vi=Vout-2.5 to -12V, On mode Iout= 5 mA
SVR
VOCMH
%
200
Vplus = 3V Tj=-55° to 125° C
VOCML
1
Off mode, Vinh=3V
Inhibit voltage
turn,Off voltage
turn-On voltage
ESR
%
500
VINH
VINH,Off
VINH,On
Electrical series
Resistance
Overcurrent monitor
voltage Low
Overcurrent monitor
voltage High
Output noise voltage
A
1
200
Iout= 400 mA, Tj=-55° to 125° C
Dropout voltage
4.5
On mode
Output shorted to GND, Iocm = 0mA
On mode,
Output shorted to GND, Iocm =10mA
On mode
Iout=0
OFF mode Vinh =3V Vplus =3V
Vd
TYP
V
V
70
30
dB
15
µΑ
1
µF
2
6
Vplus =3V IOCM = 10 mA (sinked current)
0.6
IOCM = -10uA (sourced current), Vi=Vout-2.5
Vplus = 3V
10Hz < freq < 100 Khz
Vplus
ohm
V
V
µVrms/V
400
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