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RHFL4913 ADJUSTABLE
Rad-Hard Adjustable positive voltage regulator
Features

3 Ampere low dropout voltage Embedded overtemperature, overcurrent protections Adjustable overcurrent limitation Output overload monitoring/signalling Adjustable output voltage Inhibit (ON/OFF) TTL Compatible Control Programmable output short circuit current Remote sensing operation RADHARD: Guaranteed up to 300krad in MIL 1019.6 High Dose Rate and 0.01Rad/sec ELDRS Conditions Heavy IONS SEL, SEU Immune. Sustains 2x1014 proton/cm2, And 2x1014 neutron/cm2 performances, tested in accordance with Mil Std 1019.6 ELDRS conditions. Available in Flat-16 and new SMD5C hermetic ceramic packages and as QmlV-Die, it is specifically intended for Space and harsh radiation environments. Input supply range is up to 12 volts. The RHFL4913 ADJUSTABLE is Qml-V Qualified, DSCC Smd is 5962F02524.
FLAT-16 SMD5C: 5 connections SMD
Description
The RHFL4913 ADJUSTABLE is a high performance Adjustable Positive Voltage Regulator providing exceptional radiation
Block diagram
January 2007
Rev. 7
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www.st.com
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Contents
RHFL4913 ADJUSTABLE VERSION
Contents
1 2 3 4 Pin configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Device description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4.1 4.2 4.3 4.4 4.5 4.6 ADJ Pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 INHIBIT ON-OFF Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Overtemperature protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Overcurrent protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 OCM pin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Alternates to . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
5
Application information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
5.1 5.2 Notes about 16pin hermetic package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Remote sensing operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
6
DIE Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
6.1 Die bonding pad locations and electrical functions. . . . . . . . . . . . . . . . . . . . 10
7 8 9
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Order code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
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RHFL4913 ADJUSTABLE VERSION
Pin configuration
1
Figure 1.
Pin configuration
Pin configuration (Top view for FLAT-16, Bottom view for SMD5C)
FLAT-16 SMD5C
Table 1.
Pin description
Pin name VO VI GND ISC OCM INHIBIT ADJ NC FLAT-16 1, 2, 6, 7 3, 4, 5 13 8 10 14 15 9, 11, 12, 16 4 3 SMD5C 1 2 5
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Maximum ratings
RHFL4913 ADJUSTABLE VERSION
2
Table 2.
Symbol VI VO IO IO PD Tstg Top ESD
Maximum ratings
Recommended maximum operating ratings (Note)
Parameter DC Input Voltage, VI - VGROUND DC Output Voltage Range Output Current, RHFL4913KPA Output Current, RHFL4913SCA TC = 25C Power Dissipation Storage Temperature Range Operating Junction Temperature Range Electrostatic Discharge Capability Value 12 1.23 to 9 2 A 3 15 -65 to +150 -55 to +150 Class 3 W C C Unit V V
Note:
Exceeding maximum ratings may damage the device.
Table 3.
Symbol RthJC TSOLD
Thermal data
Parameter Thermal Resistance Junction-Case, 16pin Flat and SMD5C Maximum soldering Temperature, 10sec. Value 8.3 300 Unit C/W C
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RHFL4913 ADJUSTABLE VERSION
Electrical characteristics
3
Table 4.
Symbol VI VO ISHORT
Electrical characteristics
Electrical characteristics (TJ = 25C, VI = VO+2.5V, CI = CO = 1F, unless otherwise specified)
Parameter Test Conditions Min. 3 1.19 8.7 1 4.5 0.35 0.4 0.4 0.3 0.5 0.5 % 0.5 0.6 0.6 100 6 8 25 60 1 14 40 100 mA 8 20 40 mA m % Typ. Max. 12 1.27 9.3 Unit V V V A
Operating input voltage IO = 1A, TJ= -55 to 125C Operating output voltage Output current limit (1) IO = 1A and or 2, VO = 1.23 V IO = 1A and or 2, VO = 9 V Adjustable by mask/external resistor VI = VO+2.5V to 12 V, IO = 5mA, TJ=+25C
VO/VI
Line regulation
VI = VO+2.5V to 12 V, IO = 5mA, TJ=-55C VI = VO+2.5V to 12 V, IO = 5mA, TJ=+125C VI = VO+2.5V, IO = 5 to 400 mA, TJ=+25C VI = VO+2.5V, IO = 5 to 400 mA, TJ=-55C
VO/VO Load regulation
VI = VO+2.5V, IO = 5 to 400 mA, TJ=+125C VI = VO+2.5V, IO = 5mA to 1A, TJ=+25C VI = VO+2.5V, IO = 5mA to 1A, TJ=-55C VI = VO+2.5V, IO = 5mA to 1A, TJ=+125C
ZOUT
Output impedance
IO = 100 mA DC and 20 mA rms VI = VO+2.5V, IO = 5mA, On Mode (+25C) VI = VO+2.5V, IO = 30mA, On Mode (+25C)
Iq
Quiescent current
VI = VO+2.5V, IO = 300mA, On Mode (+25C) VI = VO+2.5V, IO = 1A, On Mode (+25C) VI = VO+2V, VINH = 2.4VOff Mode VI = VO+2.5V, IO = 30mA, (-55C) VI = VO+2.5V, IO = 300mA, (-55C)
Iq
Quiescent current ON MODE
VI = VO+2.5V, IO = 1A, (-55C) VI = VO+2.5V, IO = 30mA, (+125C) VI = VO+2.5V, IO = 300mA, (+125C) VI = VO+2.5V, IO = 1A, (+125C)
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Electrical characteristics
RHFL4913 ADJUSTABLE VERSION
Table 4.
Symbol
Electrical characteristics (TJ = 25C, VI = VO+2.5V, CI = CO = 1F, unless otherwise specified)
Parameter Test Conditions IO = 400mA, VO = 2.5 to 9 V, (+25C) IO = 400mA, VO = 2.5 to 9 V, (-55C) IO = 400mA, VO = 2.5 to 9 V, (+125C) Min. Typ. 350 300 450 Max. 450 400 550 650 mV 550 800 900 950 0.8 V 2.4 f = 120Hz f = 33KHz 60 30 70 dB 40 15 0.38 ON-OFF OFF-ON 40 20 100 A V S S Vrms Unit
Vd
Dropout voltage
IO = 1A, VO = 2.5 to 9 V, (+25C) IO = 1A, VO = 2.5 to 9 V, (-55C) IO = 1A, VO = 2.5 to 9 V, (+125C) IO = 2A, VO = 2.5 to 9 V, (+25C) IO = 2A, VO = 2.5 to 9 V, (+125C)
VINH(ON) Inhibit voltage VINH(OFF) Inhibit voltage SVR ISH VOCM tPLH tPHL eN Supply voltage rejection (1)
IO = 5mA, TJ=-55 to +125C IO = 5mA, TJ=-55 to +125C VI = VO+2.5V 0.5V, VO = 3V IO = 5mA
Shutdown input current VINH = 5 V OCM Pin Voltage Inhibit propagation delay (1) Output noise voltage
(1)
Sinked IOCM = 24 mA active low VI = VO+2.5V, VINH = 2.4 V, IO = 400 mA VO = 3V B= 10Hz to 100KHz, IO = 5mA to 2A
1. These values are guaranteed by design. For each application it's strongly recommended to comply with the maximum current limit of the package used.
Figure 2.
Application diagram for remote sensing operation
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RHFL4913 ADJUSTABLE VERSION
Device description
4
Device description
The RHFL4913 Adjustable contains a PNP type power element controlled by a signal resulting from amplified comparison between the internal temperature compensated Band-Gap and the fraction of the desired Output Voltage value obtained from an external resistor divider bridge. The device is protected by several functional blocks.
4.1
ADJ Pin
The Load output voltage feed-back comes from an external divider resistor bridge middle point connected to ADJ pin (allowing all possible output voltage settings as per User's desire) established between Load terminals.
4.2
INHIBIT ON-OFF Control
By setting INHIBIT pin TTL-High, the Device switches off the Output Current and Voltage. Device is ON when INHIBIT pin is set Low. Since INHIBIT pin is internally pulled down, it can be left floating in case Inhibit function is not utilized.
4.3
Overtemperature protection
A temperature detector internally monitors the power element junction temperature. The Device goes OFF when approx. 175C are reached, returning to ON mode when back to approx. 40C. Combined with other protection blocks, it protects the Device from destructive junction temperature excursions in all load conditions. It is worth noting that when internal temperature detector reaches 175C, the active power element can be at 225C: Extensive operation under these conditions far exceeds Maximum Operation Ratings and Device reliability cannot be granted.
4.4
Overcurrent protection
An internal non-fold back Short-Circuit limitation is set with ISHORT > 3.8A (VO is 0V). This value can be downward modified by an external resistor connected between ISC and VI pins, with a typical value range of 10k to 200k To keep excellent VO regulation, it is necessary to set ISHORT 1.6 times greater than the . maximum desired application IO. When IO reaches ISHORT - 300mA, the current limitor overrules Regulation and VO starts to drop and OCM flag is risen. When no current limitation adjustment is required, ISC pin must be left unbiased (as it is in 3pin packages).
4.5
OCM pin
Goes Low when current limit starts to be active, otherwise VOCM = VI. It is buffered and can sink 10mA. OCM pin is internally pulled-up by a 5 k resistor.
4.6
Alternates to
RHFL4913 is recommended to replace all Industry Positive Regulators due to its exceptional Radiation performance. To replace 3-terminal Industry devices, use RHFL4913 Fixed Voltage versions.
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Application information
RHFL4913 ADJUSTABLE VERSION
5
Application information
Adjusting Output Voltage: R2 resistor must be connected between VO and ADJ pins. R1 resistor must be connected between ADJ and Ground. Resistor values can be derived from the following formula: VO = VADJ (R1+ R2) / R1 VADJ is 1.23V, controlled by the internal temperature compensated Band Gap block. The minimum Output voltage is therefore 1.22V and minimum Input voltage is 3V. The RHFL4913 Adjustable is functional as soon as VI - VO voltage difference is slightly above the power element saturation voltage. The Adjust pin to Ground resistor must not be bigger than 10k to keep the output feed-back error below 0.2%. A minimum 0.5mA IO must be set to ensure perfect "no-load" regulation. It is advisable to dissipate this current into the divider bridge resistor. All available VI pins shall always be externally interconnected, same thing for all available VO pins, otherwise Device stability and reliability cannot be granted. The INHIBIT function switches off the output current in an electronic way, that is very quickly. According to Lenz's Law, external circuitry reacts with LdI/dt terms which can be of high amplitude in case somewhere an inductance exists. Large transient voltage would develop on both Device terminals. It is advisable to protect the Device with Schottky diodes preventing negative voltage excursions. In the worst case, a 14V Zener diode shall protect the Device Input. The Device has been designed for high stability and low drop out operation: Minimum 1F input and output tantalum capacitors are therefore mandatory. Capacitor ESR range is from 0.5 to over 20 . Such range turns out to be useful when ESR increases at low temperature. When large transient currents are expected, larger value capacitors are necessary. In case of high current operation with expected short-circuit events, caution must be considered relatively to capacitors. They must be connected as close as possible to device terminals. As some tantalum capacitors may permanently fail when submitted to high charge-up surge currents, it is recommended to decouple them with 470nF polyester capacitors. Being RHFL4913 Adjust manufactured with very high speed bipolar technology (6GHz fT transistors), the PCB layout must be performed with exceptional care, very low inductance, low mutually coupling lines, otherwise high frequency parasitic signals may be picked-up by the Device resulting into system selfoscillation. The benefit is an SVR performance extended to far higher frequencies.
5.1
Notes about 16pin hermetic package
The bottom section of 16pin packages is metallized in order to allow User to directly solder the RHFL4913A on the equipment heat sink for enhanced heat removal.
5.2
Remote sensing operation
See Figure 2. A separate Kelvin Voltage sensing line provides ADJ pin with exact Load "high potential" information. But variable remote Load current consumption induces variable Iq current (Iq is roughly the IO current divided by the hFE of the internal PNP series power element) routed through parasitic series line resistor symbolized as RW2. To compensate this parasitic voltage, the Resistor RW1 introduced on purpose provides the necessary compensating voltage signal to ADJust pin.
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RHFL4913 ADJUSTABLE VERSION
DIE Information
6
Figure 3.
DIE Information
Die map
GND 0;1002
13 INBH -1542;868 ADJ -1545;574 SENSE -1545;287 14 15 16 10 8 OCM 1517;5 Short 1517;2
1-2
3-4-5
6-7
VO -890;-974
VI 0;-974
VO 970;-974
Note:
Pad numbers reflect terminal numbers when placed in case FLAT 16.
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DIE Information
RHFL4913 ADJUSTABLE VERSION
6.1
Die bonding pad locations and electrical functions.
Die physical dimensions. Die size: 150mils x 110mils (3.81mm by 2.79mm) Die thickness: 375m 25m (14.8 mils 1 mil) Pad size: VIN, VOUT pads: 450m x 330m (17.7mils by 13mils) Control pads: 184m x 184m (7.25mils square) Interface materials. Top metallization: Al/Si/Cu, 1.05m 0.15m Backside metallization: None Glassivation. Type: P. Vapox + Nitride Thickness: 0.6m 0.1m + 0.6m 0.08m Substrate: bare Silicon Assembly related information. Substrate potential: Floating recommended to be tied to Ground Special assembly instructions: "Sense" pad not used, not internally connected to any part of the IC. Can be connected to Ground when space anti-static electricity rules apply.
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RHFL4913 ADJUSTABLE VERSION
DIE Information
FLAT-16 (MIL-STD-1835) MECHANICAL DATA
mm. DIM. MIN. A b c D E E2 E3 e L Q S1 0.66 0.13 0.76 1.27 6.72 1.14 0.026 0.005 2.16 0.43 0.13 9.91 6.91 4.32 0.030 0.050 0.265 0.045 TYP MAX. 2.72 MIN. 0.085 0.017 0.005 0.390 0.272 0.170 TYP. MAX. 0.107 inch
e
b
c
L
E3
16 9
E
E2
1
8
E3
L
S1 D
Q A
7450901A
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DIE Information
RHFL4913 ADJUSTABLE VERSION
SMD5C MECHANICAL DATA
DIM. A A1 b b1 b2 b3 D D1 E e mm. MIN. 2.84 0.25 7.13 4.95 2.28 2.92 13.71 0.76 7.39 7.52 1.91 7.65 TYP 3.00 0.38 7.26 5.08 2.41 3.05 13.84 MAX. 3.15 0.51 7.39 5.21 2.54 3.18 13.97 MIN. 0.112 0.010 0.281 0.195 0.090 0.115 0.540 0.030 0.291 0.296 0.075 0.301 inch TYP. 0.118 0.015 0.286 0.200 0.095 0.120 0.545 MAX. 0.124 0.020 0.291 0.205 0.100 0.125 0.550
7924296B
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RHFL4913 ADJUSTABLE VERSION
Packaging
7
Packaging
RHFL4913 Adjustable is available in high thermal dissipation 16pin hermetic Flat package, which bottom flange is metallized to allow direct soldering to heat sink (efficient thermal conductivity). It is also available in SMD5C hermetic ceramic package.
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Order code
RHFL4913 ADJUSTABLE VERSION
8
Table 5.
DIE
Order code
Order code
FLAT-16 RHFL4913KPA-01V RHFL4913KPA-02V RHFL4913KPA1 RHFL4913KPA2 RHFL4913SCA1 RHFL4913SCA2 SMD5C RHFL4913SCA-01V Terminal finish GOLD SOLDER GOLD GOLD Out. volt. ADJ ADJ ADJ ADJ ADJ ADJ Q.TY LEVEL QML-V QML-V EM1 EM2=EM1+48hours B.I. QML-V die EM1 die
L4913ADIE2V L4913ADIES
Table 6.
Part number - SMD Equivalence
ST PART NUMBER RHFL4913KPA-01V RHFL4913KPA-02V L4913ADIE2V SMD PART NUMBER 5962F0252401VXC 5962F0252401VXA 5962F0252401V9A
Table 7.
Environmental characteristics
Parameter Conditions -55C to +125C From 0 kRad to 300k Rad at 0.55rad/sec From 0 kRad to 300 kRad, MIL1019.5 Value 40 8 6 Unit ppm/C ppm/kRad ppm/kRad
Output Voltage thermal drift Output Voltage radiation drift Output Voltage radiation drift
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RHFL4913 ADJUSTABLE VERSION
Revision history
9
Table 8.
Revision history
Revision history
Revision 3 4 5 6 7 Changes New Order Codes added - Tables 4 and 5. The Features, Tables 4, 5 and the Figure 1 has been updated. Add the Mechanical Data SOC-16. Mistake on Table 4 (Q.ty Level), Table 7 has been updated and add DIE Information. Added new Package SMD5C and Removed old Package SOC-16. DIE Information and DIE Pad has been updated par. 6, pages 9 and 10.
Date 29-Oct-2004 27-May-2005 08-Jun-2005 30-Jan-2006 26-Jan-2007
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RHFL4913 ADJUSTABLE VERSION
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