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PDF RHFL7913 Data sheet ( Hoja de datos )
| Número de pieza | RHFL7913 | |
| Descripción | Rad-Hard adjustable negative voltage regulator | |
| Fabricantes | ST Microelectronics | |
| Logotipo |  |
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RHFL7913
www.datasheet4u.com
Rad-Hard adjustable negative voltage regulator
Features
■ 3 A low dropout voltage
■ Optional overtemperature and overcurrent
protection
■ Adjustable overcurrent limitation
■ Load short circuit monitoring
■ Adjustable output voltage
■ Inhibit (ON/OFF) TTL-compatible control
■ Programmable output short-circuit current
limitation
■ Remote sensing operation
■ Rad-Hard: sustains 300 krad in Mil-1019.6 at
High & ELDRS low dose rate conditions
■ Heavy ions, SEL and SEU immune; able to
Sustains 2x1014 protons/cm2 and 5x1014
neutrons/cm2
Flat-16
SMD5C:
5-connection SMD
Description
The RHFL7913 adjustable is a high performance
Rad Hard negative voltage regulator. Available in
Flat-16 and new SMD5C hermetic ceramic
packages, it is specifically intended for space and
harsh radiation environments. It provides
exceptional electrical performances, high speed
and low dropout voltage.
Input supply ranges from -3 V to -12 V. It also
provide logical control / monitor functions (inhibit,
output monitor, short-circuit control) from/to
external positive voltage signals, while the entire
RHFL7913 adjustable analog functions are
biased at negative voltages with respect of ground
pin. The device is QML-V qualified with SMD
5962-02532.
December 2007
Rev 3
1/18
www.st.com
18
1 page  
RHFL7913
3 Maximum ratings
Table 2. Maximum operating ratings (see Note:)
Symbol
Parameter
www.datasheet4uV.Icom DC input voltage |VIN – VPLUS|
VPLUS Logical block supply voltage V(+)-V(GND), unless grounded
VI DC voltage, VIN–GND, VPLUS= 0V
VI DC voltage, VIN–GND, VPLUS=+3V
VO DC output voltage range
IOUT Output current
RHFL7913KPA
RHFL7913SCA
PD TC = 25 °C power dissipation
RHFL7913KPA
RHFL7913SCA
TSTG Storage temperature range
TOP Operating junction temperature range
ESD Electrostatic discharge capability
Maximum ratings
Value
-12
+5
-12
-9
-9 to -1.20
2
3
15
15
-65 to +150
-55 to +150
Class 3
Unit
V
A
W
°C
Note:
Absolute maximum ratings are those values beyond which damage to the device may occur.
Functional operation under these conditions is not implied.
Table 3. Thermal data
Symbol
Parameter
RthJC
TSOLD
Thermal resistance junction-case, Flat-16 and SMD5C
Maximum soldering temperature, 10 sec.
Table 4. Recommended operating conditions
Symbol
Parameter
VI
VPLUS
VO
TA
Input voltage range VI (at VPLUS= 0V)
Positive supply range
Output voltage range
VPLUS=0V, VI= -12 to -3.7V
VPLUS=+3V,VI= -9 to -3.7V
Ambient operating temperature range
Value
8.3
300
Unit
°C/W
°C
Value
-12 to -3.7
0 to +3
-9.5 to -1.2
-6.5 to -1.2
-55 to +125
Unit
V
V
V
V
°C
5/18
5 Page 
RHFL7913
Application information
6.1 Remote sensing operation
www.datasheet4u.com
When load is physically far away from device output, the adjustable line can be set as a
kelvin sense line by implementing the divider resistor bridge as close as possible form
device, with a decoupling capacitor. The adjust pin kelvin sense line (to be not coupled with
power line) picks-up load voltage (load also locally decoupled with a capacitor). This layout
eliminates ohmic drop in load power wire. Similarly, by taking advantage of two separate
ground terminals: power ground pin shall be directly connected to load ground terminal
which is also the system ground, device signal ground shall be separately connected to load
ground terminal by another kelvin line: In this way, ground ohmic errors are minimized
because the only current flowing into device signal ground pin kelvin line is device Iq (a
matter of a few mA).
11/18
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet RHFL7913.PDF ] | |
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