7908 SS | Alldatasheet
Document overview
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Technical content
www.siliconsupplies.com /g3 Linear Voltage Regulator – 7908 Negative Fixed 8V Voltage Regulator in bare die form ± 5 % VOUT tolerance over entire temperature range Greater than 1A output current capability Internal thermal overload protection Internal short-circuit current limit Output capacitor not e ssential for stability Full military temperature range Positive voltage complement is 7808 Rev 1.0 19/04/19 Features:
Ordering Information
The following part suffixes apply: No suffix - MIL-STD-883 /2010B Visual Inspection “ H” - MIL-STD-883 /2010B Visual Inspection + MIL-PRF-38534 Class H LAT “ K” - MIL-STD-883 /2010A Visual Inspection (Space) + MIL-PRF-38534 Class K LAT LAT = Lot Acceptance Test. For further information on LAT process flows see below. www.siliconsupplies.com\\quality\\bare-die-lot-qualification Supply Formats: Mechanical Specification Default – Die in Waffle Pack (100 per tray capacity) Sawn Wafer on Tape – On request Unsawn Wafer – On request Tape & Reel – On request In Metal or Ceramic package – On request The 7908 8V fixed 3-terminal negative voltage regulator delivers up to 1.5A of output current with adequate heat-sinking. The device is equipped with internal limiting, safe-area compensation + thermal shutdown features for overload immunity. The 7908 can be used with external components to obtain adjustable voltages or currents & can also be used as the power-pass element in precision high-current voltage regulators. No external components are needed other than to enhance performance or increase design flexibility.
Description
Die Dimensions in µm (mils) 1900 (75) 1900 (75) Die Size (Unsawn) 1900 x1900 75 x 75 µm mils Minimum Bond Pad Size 230 x 230 9.05 x 9.05 µm mils Die Thickness 280 (±20) 11.02 (±0.79) µm mils Top Metal Composition Al 1%Si 1.1µm Back Metal Composition Ti/Ni/Ag 1.2 µm
d Linear Voltage Regulator – 7908 Rev 1.0 19/04/19 Pad Layout and Functions Typical Application VOUT 7908 CI 0.33µf CO ≥0.1µf VIN CI is required if the regulator is located an appreciable distance from power supply filter. CO is not required for stability; however it does improve transient response. For optimum stability and transient response locate CI CO as close as possible to the regulator. A common ground is required between the input and the output voltages. The input voltage must remain typically 2.0 V above the output voltage even during the low point on the input ripple voltage. 3, 4 1900µm (74.80 mils) 1900µm (74.80 mils) COORDINATES (µm) PAD FUNCTION X Y 1 VIN 1.575 1.074 2 GND 1.572 0.188 3 VOUT 0.088 1.059 4 VOUT 0.088 1.553 CONNECT CHIP BACK TO VIN 0,0 Page 2 of 4 www.siliconsupplies.com
Linear Voltage Regulator – 7908 Rev 1.0 19/04/19 Absolute Maximum Ratings PARAMETER SYMBOL VALUE UNIT Input Voltage VIN -35 V Power Dissipation1 P D Internally Limited W Operating Temperature Range - -55 to 150 °C Maximum Junction Temperature TJ 150 °C Storage Temperature TSTG -65 to 150 °C PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNITS Output Voltage VOUT 5mA ≤ IOUT ≤ 1A, -10.5V ≥ VIN ≥ -23V, PD ≤ 15 Watts -7.60 - -8.40 V -10.5V≥VIN ≥-25V,IOUT=0.1A,TJ=25°C - 12 80 -11V≥VIN ≥ -17V,IOUT=0.1A,TJ= 25°C - 5 40 -10.5V≥VIN ≥-25V,IOUT=0.5A,TJ=25°C - 50 160 Line Regulation ΔVOUT -11V ≥ VIN ≥ -17V,IOUT=0.5A,TJ= 25°C - 22 80 5mA ≤ IOUT ≤ 1.5A,TJ= 25°C - 26 160 Load Regulation ΔVOUT 250mA ≤ IOUT ≤ 750mA, TJ = 25°C - 9 80 mV Input Bias Current IB TJ = 25°C - 4.3 7.8 mA -10.5V ≥ VIN ≥ -25V - - 1.0 Input Bias Current Change ΔIB 5mA ≤ IOUT ≤ 1.5A - - 0.5 mA Output Noise Voltage Vn 10Hz ≤ f ≤ 100KHz, TJ = 25°C - 52 - µV/VOUT Ripple Rejection RR IOUT = 20mA, f = 120Hz, - 62 - dB Dropout Voltage VIN – VOUT IOUT = 1A, TJ = 25°C - 2 - V Peak Output Current IMAX TJ = 25°C - 2.1 - A Avg. Output Voltage Temp. Coefficient TCVOUT IOUT = 5mA, 0°C ≤ TJ ≤ +125°C - -1.0 - mV/°C 1. Results in die form are dependent on die attach and assembly method. Max power dissipation is internally limited by the die. PARAMETER SYMBOL MIN MAX UNIT Recommended Operating Conditions Input Voltage VIN -7 -25 V Output Current IOUT - 1.5 A Operating Temperature Range TJ -55 125 °C Page 3 of 4 www.siliconsupplies.com