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PDF RHFL7913A Data sheet ( Hoja de datos )
| Número de pieza | RHFL7913A | |
| Descripción | Rad-hard adjustable negative voltage regulator | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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RHFL7913A
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-1019.7 at
High & ELDRS low dose rate conditions
■ Heavy ions, SEL immune at 68 MeV/cm²/mg
LET ions; able to Sustains 2x1014 protons/cm2
FLAT-16
SMD5C:
5-connection SMD
Description
The RHFL7913A 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
RHFL7913A adjustable analog functions are
biased at negative voltages with respect of ground
pin. The device is QML-V qualified with SMD
5962-02532.
August 2008
Rev 4
1/19
www.st.com
19
1 page  
RHFL7913A
3 Maximum ratings
Maximum ratings
Table 2. Maximum operating ratings (1)
Symbol
Parameter
Value
Unit
www.datasheet4uV.Icom DC input voltage |VIN – VPLUS|
-12
VPLUS Logical block supply voltage V(+)-V(GND), unless grounded
+5
VI DC voltage, VIN–GND, VPLUS= 0V
-12 V
VI DC voltage, VIN–GND, VPLUS=+3V
-9
VO DC output voltage range
-9 to -1.20
IOUT Output current
RHFL7913KPA
RHFL7913SCA
2
A
3
PD TC = 25 °C power dissipation
RHFL7913KPA
RHFL7913SCA
15
W
15
TSTG
TOP
Storage temperature range
Operating junction temperature range
-65 to +150
-55 to +150
°C
ESD Electrostatic discharge capability
Class 3
1. 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 -1.3
0 to +3
-9.5 to -1.2
-6.5 to -1.2
-55 to +125
Unit
V
V
V
V
°C
5/19
5 Page 
RHFL7913A
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).
11/19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet RHFL7913A.PDF ] | |
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