Document
MOTOROLA
SEMICONDUCTOR
TECHNICAL DATA
Current Regulator Diodes
Field-effect current regulator diodes are circuit elements that provide a current essentially independent of voltage. These diodes are especially designed for maximum impedance over the operating range. These devices may be used in parallel to obtain higher currents. Manufacturing Locations: WAFER FAB: Phoenix, Arizona ASSEMBLY/TEST: Phoenix, Arizona
1N5283 through 1N5314
CURRENT REGULATOR DIODES
CASE 51-02
MAXIMUM RATINGS
Rating Peak Operating Voltage (TJ = –55°C to +200°C) Steady State Power Dissipation @ TL = 75°C Derate above TL = 75°C Lead Length = 3/8″ (Forward or Reverse Bias) Operating and Storage Junction Temperature Range Symbol POV PD 600 4.8 mW mW/°C Value 100 Unit Volts
TJ, Tstg
–55 to +200
°C
1.5 Watt DC Power Data Sheet 9-2
Motorola TVS/Zener Device Data
1N5283 through 1N5314
ELECTRICAL CHARACTERISTICS (TA = 25°C unless otherwise noted)
Regulator Current IP (mA) @ VT = 25 V Type No. Nom 0.22 0.24 0.27 0.30 0.33 0.39 0.43 0.47 0.56 0.62 0.68 0.75 0.82 0.91 1.00 1.10 1.20 1.30 1.40 1.50 1.60 1.80 2.00 2.20 2.40 2.70 3.00 3.30 3.60 3.90 4.30 4.70 Min 0.198 0.216 0.243 0.270 0.297 0.351 0.387 0.423 0.504 0.558 0.612 0.675 0.738 0.819 0.900 0.990 1.08 1.17 1.26 1.35 1.44 1.62 1.80 1.98 2.16 2.43 2.70 2.97 3.24 3.51 3.87 4.23 Max 0.242 0.264 0.297 0.330 0.363 0.429 0.473 0.517 0.616 0.682 0.748 0.825 0.902 1.001 1.100 1.21 1.32 1.43 1.54 1.65 1.76 1.98 2.20 2.42 2.64 2.97 3.30 3.63 3.96 4.29 4.73 5.17 Minimum Dynamic Impedance @ VT = 25 V ZT (MΩ) 25.0 19.0 14.0 9.00 6.60 4.10 3.30 2.70 1.90 1.55 1.35 1.15 1.00 0.880 0.800 0.700 0.640 0.580 0.540 0.510 0.475 0.420 0.395 0.370 0.345 0.320 0.300 0.280 0.265 0.255 0.245 0.235 Minimum Knee Impedance @ VK = 6.0 V ZK (MΩ) 2.75 2.35 1.95 1.60 1.35 1.00 0.870 0.750 0.560 0.470 0.400 0.335 0.290 0.240 0.205 0.180 0.155 0.135 0.115 0.105 0.092 0.074 0.061 0.052 0.044 0.035 0.029 0.024 0.020 0.017 0.014 0.012 Maximum Limiting Voltage @ IL = 0.8 IP (min) VL (Volts) 1.00 1.00 1.00 1.00 1.00 1.05 1.05 1.05 1.10 1.13 1.15 1.20 1.25 1.29 1.35 1.40 1.45 1.50 1.55 1.60 1.65 1.75 1.85 1.95 2.00 2.15 2.25 2.35 2.50 2.60 2.75 2.90
1N5283 1N5284 1N5285 1N5286 1N5287
1N5288 1N5289 1N5290 1N5291 1N5292 1N5293 1N5294 1N5295 1N5296 1N5297
1N5298 1N5299 1N5300 1N5301 1N5302
1N5303 1N5304 1N5305 1N5306 1N5307 1N5308 1N5309 1N5310 1N5311 1N5312
1N5313 1N5314
Devices listed in bold, italic are Motorola preferred devices.
Motorola TVS/Zener Device Data
1.5 Watt DC Power Data Sheet 9-3
1N5283 through 1N5314
5 4 ID, DIODE CURRENT (mA) 3 2 1 0 –20 –40 –60 –80 –100 –2 REVERSE ZK @ VK FORWARD IP & ZT @ VT
SYMBOLS AND DEFINITIONS
ID — Diode Current. IL — Limiting Current: 80% of IP minimum used to determine Limiting voltage, VL. IP — Pinch-off Current: Regulator current at specified Test Voltage, VT. POV — Peak Operating Voltage: Maximum voltage to be applied to device. θl — Current Temperature Coefficient. VAK — Anode-to-cathode Voltage. VK — Knee Impedance Test Voltage: Specified voltage used to establish Knee Impedance, ZK. VL — Limiting Voltage: Measured at IL, VL, together with Knee AC Impedance, ZK, indicates the Knee characteristics of the device. VT — Test Voltage: Voltage at which IP and ZT are specified. ZK — Knee AC Impedance at Test Voltage: To test for ZK, a 90 Hz signal VK with RMS value equal to 10% of test voltage, VK, is superimposed on VK: ZK = VK/iK where iK is the resultant ac current due to VK. To provide the most constant current from the diode, ZK should be as high as possible; therefore, a minimum value of ZK is specified. ZT — AC Impedance at Test Voltage: Specified as a minimum value. To test for ZT, a 90 Hz signal with RMS value equal to 10% of Test Voltage VT, is superimposed on VT.
VL @ IL
POV
+ REVERSE –1 0 20 FORWARD 40 60 80 ANODE 100
– CATHODE 120 140 160
VAK, ANODE-CATHODE VOLTAGE (VOLTS)
Figure 1. Typical Current Regulator Characteristics
θ JL , JUNCTION-TO-LEAD THERMAL RESISTANCE (°C/W)
300
250
APPLICATION NOTE
200 POINT OF LEAD TEMPERATURE MEASUREMENT As the current available from the diode is temperature dependent, it is necessary to determine junction temperature, TJ, under specific operating conditions to calculate the value of the diode current. The following procedure is recommended: Lead Temperature, TL, shall be determined from: TL = θLA PD + TA where θLA is lead-to-ambient thermal resistance and PD is power dissipation. θLA is generally 30–40°C/W for the various clips and tie points in common use, and for printed circuit-board wiring. Junction Temperature, TJ, shall be calculated from: TJ = TL + θJL PD where θJL is taken from Figure 2. For circuit design limits of VAK, limits of PD may be estimated and extremes of TJ may be computed. Using the information on Figures 4 and 5, changes in current may be found. To improve current regulation, keep VAK low to reduce PD and keep the leads short, especially the cathode lead, to reduce θJL.
150
100
L L (MOS.