RHFL4913 FIXED VERSION RAD-HARD POSITIVE FIXED VOLTAGE REGULATORS ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ LOW DROPOUT VOLTAGE EMBEDDED OVERTEMPERATURE, OVERCURRENT PROTECTIONS ADJUSTABLE CURRENT LIMITATION OUTPUT OVERLOAD MONITORING/ SIGNALLING FIXED 2.5; 3.3V; 5.0V OUTPUT VOLTAGES INHIBIT (ON/OFF) TTL COMPATIBLE CONTROL PROGRAMMABLE OUTPUT SHORT CIRCUIT CURRENT REMOTE SENSING OPERATION RADHARD: TESTED UP TO 300krad IN MIL 1019.5 AND LOW DOSE RATE CONDITIONS HEAVY IONS SEL, SEU FREE. SUSTAINS 2x1014 proton/cm2, AND 2x1014 neutron/cm² DESCRIPTION The RHFL4913 Fixed is a high performance Rad Hard Positive Voltage Regulator family. Available into various hermetic ceramic packages, it is specifically intended for Space and harsh FPC-16 SMD.5 TO-257 radiation environments. Input supply range is from 3 to 12 volts. RHFL4913 Fixed is Qml-V Qualified, DSCC Smd are 5962F02534 / 02535 / 02536 / 02537. BLOCK DIAGRAM May 2004 Rev. 5 1/11 RHFL4913 FIXED VERSION Table 1: Absolute Maximum Ratings (Note 1) Symbol VI Parameter Value Unit DC Input Voltage, VI - VGROUND 14 V Output Current 3 2 A PD RHFL4913S, ESY RHFL4913KP TC = 25°C Power Dissipation 15 W Tstg Storage Temperature Range -65 to +150 °C Top Operating Junction Temperature Range -55 to +150 °C IO ESD Electrostatic Discharge Capability Class 3 Note 1: Exceeding maximum ratings may damage the device. Table 2: Thermal Data Symbol Rthj-case Tsold Parameter Thermal Resistance Junction-case FPC-16 TO-257 SMD.5 Unit 8.3 8.3 8.3 °C/W Maximum soldering Temperature, 10sec. 300 °C Figure 1: Connection Diagram (Top view, Bottom view for SMD.5) FPC-16 SMD.5 TO-257 Table 3: Pin Description 2/11 PIN N° FPC-16 SMD.5 TO-257 VO 1, 2, 6, 7 1 3 VI 3, 4, 5 2 1 GND ISC 13 8 3 2 OCM INHIBIT SENSE NC 10 14 16 9, 11, 12, 15 RHFL4913 FIXED VERSION Table 4: Ordering Codes FPC-16 SMD.5 TO-257 SOLDER DIPPING OUTPUT VOLTAGE RHFL4913KP25-01V RHFL4913KP25-02V RHFL4913KP30-01V RHFL4913KP30-02V RHFL4913KP33-01V RHFL4913KP33-02V RHFL4913KP50-01V RHFL4913KP50-02V RHFL4913S25-03V RHFL4913S25-04V RHFL4913S30-03V RHFL4913S30-04V RHFL4913S33-03V RHFL4913S33-04V RHFL4913S50-03V RHFL4913S50-04V RHFL4913ESY2505V RHFL4913ESY2506V RHFL4913ESY3005V RHFL4913ESY3006V RHFL4913ESY3305V RHFL4913ESY3306V RHFL4913ESY5005V RHFL4913ESY5006V GOLD SOLDER GOLD SOLDER GOLD SOLDER GOLD SOLDER 2.5 V 2.5 V 3.0 V 3.0 V 3.3 V 3.3 V 5.0 V 5.0 V Table 5: Part Number - Smd Equivalence ST PART NUMBER SMD PART NUMBER RHFL4913KP25-01V RHFL4913KP25-02V RHFL4913KP33-01V RHFL4913KP33-02V RHFL4913KP50-01V RHFL4913KP50-02V RHFL4913S25-03V RHFL4913S25-04V RHFL4913S33-03V RHFL4913S33-04V RHFL4913S50-03V RHFL4913S50-04V RHFL4913ESY2505V RHFL4913ESY2506V RHFL4913ESY3305V RHFL4913ESY3306V RHFL4913ESY5005V RHFL4913ESY5006V 5962F0253401VXC 5962F0253401VXA 5962F0253501VXC 5962F0253501VXA 5962F0253601VXC 5962F0253601VXA 5962F0253402VYC 5962F0253402VYA 5962F0253502VYC 5962F0253502VYA 5962F0253602VYC 5962F0253602VYA 5962F0253402VZC 5962F0253402VZA 5962F0253502VZC 5962F0253502VZA 5962F0253602VZC 5962F0253602VZA Note: 3V version is available on request. Table 6: Environmental Characteristics Parameter Output Voltage thermal drift Output Voltage radiation drift Output Voltage radiation drift Conditions Typical Unit -55°C to 125°C from 0 krad to 300 krad at 0.55rad/sec from 0 krad to 300 krad, Mil 1019.5 40 8 6 ppm/°C ppm/krad ppm/krad 3/11 RHFL4913 FIXED VERSION Table 7: Electrical Characteristics (TJ = 25°C, VI = VO+2.5V, CI = C O = 1µF, unless otherwise specified) Symbol Parameter Test Conditions Min. TJ= -55 to 125°C VI Operating Input Voltage IO = 1A VO Output Voltage accuracy VI = VO+2.5V, IO = 5mA ISHORT Output Current Limit (*) Adjustable by mask/external resistor Typ. Max. Unit 3 12 V -2 2 % 4.5 A VO Operating Output Voltage IO = 2 A, 2.5 V output voltage 2.45 2.55 V VO Operating Output Voltage IO = 2 A, 3.3 V output voltage 3.23 3.37 V VO Operating Output Voltage IO = 2 A, 5.0 V output voltage 4.9 5.1 V ∆VO/∆VI Line Regulation VI = VO+2.5V to 12 V, IO = 5mA 0.35 % ∆VO/∆VO Load Regulation VI = VO+2.5V, IO = 5mA to 400 mA 0.3 % VI = VO+2.5V, IO = 5mA to 1A 0.5 ZOUT Output Impedance IO = 100 mA DC and 20 mA rms Iq Quiescent Current VI = VO+2.5V, IO = 5mA On Mode 6 VI = VO+2.5V, IO = 30mA On Mode 8 VI = VO+2.5V, IO = 300mA On Mode 25 VI = VO+2.5V, IO = 1A On Mode 60 VI = VO+2V, VINH = 2.4V Off Mode 1 VI =VO+2.5V, IO=5mA, TJ=-55 to 125°C 6 VI =VO+2.5V, IO=30mA, TJ=-55 to 125°C VI =VO+2.5V, IO=300mA, TJ=-55 to 125°C 14 Iq Quiescent Current 100 IO = 400mAVO = 2.5 to 9 V, (-55°C) 300 Dropout Voltage IO = 400mAVO = 2.5 to 9 V, (25°C) 350 Dropout Voltage VO = 2.5 to 9 V, (25°C) IO = 2A VO = 2.5 to 9 V, (25°C) VO = 2.5 to 9 V, (125°C) IO = 2A VO = 2.5 to 9 V, (125°C) VINH(ON) Inhibit Voltage IO = 5mA, TJ= -55 to 125°C VINH(OFF) Inhibit Voltage IO = 5mA, TJ= -55 to 125°C SVR Supply Voltage Rejection VI = VO+2.5V ± 0.5V, IO = 5mA ISH Shutdown Input Current VINH = 5 V OCM Pin Voltage 900 450 550 800 950 2.4 f = 120Hz f = 33KHz tPLH tPHL Inhibit Propagation Delay eN Output Noise Voltage B= 10Hz to 100KHz IO = 5mA to 2A V 450 0.8 Sinked IOCM = 10 mA active low VI = VO+2.5V, VINH = 2.4 V, IO = 400 mA VOCM 400 650 IO = 400mAVO = 2.5 to 9 V, (125°C) IO = 1A mA 100 Dropout Voltage IO = 1A mA 40 VI = VO+2.5V, IO = 1A, TJ=-55 to 125°C Vd % mΩ 60 30 V V 70 40 dB 15 µA 0.38 V ON-OFF OFF-ON 20 100 40 µS µS µVrms (*) This value is guaranteed by design. For each application it’s strongly recommended to comply with the maximum current limit of the package used. 4/11 RHFL4913 FIXED VERSION Figure 2: Application Diagram For Remote Sensins Operation DEVICE DESCRIPTION The RHFL4913 Fixed Voltage contains a PNP type power element controlled by a signal resulting from amplified comparison between the internal temperature compensated Band-Gap cell and the fraction of the desired Output Voltage value. This fractional value is obtained from an internal-to-die resistor divider bridge set by STMicroelectronics. The device is protected by several functional blocks. Low pin count Package limitations Some functions (INHIBIT, OCM, SENSE) are not available due to lack of pins. Corresponding die pads are by default connected inside silicon. SENSE pin The Load voltage is applied by a Kelvin line connected to SENSE pin: Voltage feed-back comes from the internal divider resistor bridge. Therefore possible output voltages are set by manufacturer mask metal options. SENSE pin is not available in 3pin packages. INHIBIT ON-OFF Control By setting INHIBIT pin TTL-High, the Device switches off the Output Current and Voltage. The 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. INHIBIT pin is not available in 3pin packages. Overtemperature protection A temperature detector internally monitors the power element junction temperature. The Device goes OFF at approx. 175°C, returning to ON mode when back to approx. 40°C. It is worth noting that when the internal temperature detector reaches 175°C, the active power element can be at 225°C: Device reliability cannot be granted in case of extensive operation under these conditions. Overcurrent protection ISC pin. An internal non-fold back Short-Circuit limitation is set with ISHORT > 3.8A (VO is 0V). This value can be reduced by an external resistor connected between ISC pin and VI pin, with a typical value range of 10kΩ to 200kΩ. This adjustment feature is not available in 3pin packages. 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 limiter overrules Regulation and VO starts to drop and the OCM flag is risen. When no current limitation adjustment is required, ISC pin must be left unbiased (as it is in 3 pin packages). OCM pin Goes Low when current limiter starts to be active, otherwise VOCM = VI. It is bufferized and can sink 10mA. OCM pin is internally pulled-up by a 5 kΩ resistor. Not available in 3pin packages. 5/11 RHFL4913 FIXED VERSION Alternate to RHFL4913 Fixed (& custom) Voltages replace all 3-terminal Industry Devices, providing essential benefits - Lower Drop-Out - High radiation performance - Better SVR - Saving the high stability external setting resistors. APPLICATION INFORMATION The RHFL4913 Fixed Voltage is functional as soon as VI-VO voltage difference is slightly above the power element saturation voltage. A minimum 0.5mA IO ensures perfect “no-load” regulation. All available VI pins must always be externally interconnected, same thing for all available VO pins, otherwise Device stability and reliability cannot be granted. All NC pins can be connected to Ground. 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 some series-inductance exists. The effect would be a large transient voltage developed on both Device terminals. It is necessary 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 1µF input and output tantalum capacitors are therefore mandatory. Capacitor ESR range is from 0.5 Ω to over 20 Ω. 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 Fixed Voltage manufactured with very high speed bipolar technology 6GHz fT transistors), the PCB lay-out must be performed with extreme care, very low inductance, low mutually coupling lines, otherwise high frequency parasitic signals may be picked-up by the Device resulting into self-oscillation. User’s benefit is a SVR performance extended to far higher frequencies. REMOTE SENSING OPERATION In case the Load is located far from the regulator, it is recommended to comply with the scheme below. To obtain the best regulation, it is in addition essential to care about: - The wire connecting R2 to the Load end must not be crossed by the Load current (Kelvin sense). The noise captured by the wires between the Load and the chip could bring a noisy output voltage. In case this happens, it is recommended that shielded cables are used for these connections. The external wrap must be used for connecting the ground of the chip with the Load Ground. It is also recommended to place 1uF tantalum capacitors between Output and Ground close to the device and another next to the Load. 6/11 RHFL4913 FIXED VERSION ALN FPC-16 (MIL-STD-1835) MECHANICAL DATA mm. inch DIM. MIN. A TYP 2.16 MAX. MIN. 2.72 0.085 TYP. 0.107 b 0.43 0.017 c 0.13 0.005 D 9.91 0.390 E 6.91 0.272 E2 4.32 0.170 E3 0.76 0.030 e 1.27 0.050 L 6.72 0.265 Q 0.66 S1 0.13 MAX. 1.14 0.026 0.045 0.005 b e c L E3 16 9 E E2 1 8 E3 L S1 D Q A 7450901A 7/11 RHFL4913 FIXED VERSION SMD.5 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. A 3.00 0.118 A1 0.38 0.015 b 7.26 0.286 b1 5.72 0.225 b2 2.41 0.095 b3 3.05 0.120 D 10.16 0.400 D1 0.76 MAX. 0.030 E 7.52 0.296 e 1.91 0.075 7386434A 8/11 RHFL4913 FIXED VERSION TO-257 MECHANICAL DATA DIM. mm. MIN. TYP inch MAX. MIN. TYP. A 10.54 0.415 B 10.54 0.415 C 16.64 0.655 D 4.7 E F 5.33 0.185 1.02 3.56 3.68 0.210 0.40 3.81 0.140 0.145 G 13.51 0.532 H 5.26 0.207 I 0.76 0.030 J 3.05 0.120 K 2.54 0.100 L M 15.2 16.5 2.29 N R 0.598 0.150 0.650 0.090 0.71 1.65 MAX. 0.028 0.065 0117268C 9/11 RHFL4913 FIXED VERSION Table 8: Revision History Date Revision 05-May-2004 5 10/11 Description of Changes Mistake in Pin description SMD.5 on Table 3 RHFL4913 FIXED VERSION Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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