SG3845M Microsemi Analog Mixed Signal Group, SG3845M Datasheet
SG3845M
Specifications of SG3845M
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SG3845M Summary of contents
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... Plastic DIP 8-Pin 14-Pin T (°C) A RoHS Compliant / Pb-free Transition DC: 0503 SG3844M SG3844N SG3845M SG3845N SG2844M SG28424N - SG2845M SG2845N -55 to 125 MIL- STD/883 DESC Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LXSG3844N-TR) L Copyright © 2000 Rev ...
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SG1844/SG1845 Series Supply Voltage (I < 30mA) ............................................................... Self Limiting CC Supply Voltage (Low Impedance Source) ........................................................ 30V Output ...
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SG1844/SG1845 Series Parameter Current Sense Section Gain (Notes 5 & 6) Maximum Input Signal (Note 5) Power Supply Rejection Ratio (Note 5) PSRR Input Bias Current Delay to Output (Note 4) Output Section Output Low Level Output High Level Rise ...
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34V GROUND** 16V (1844) 8.4 (1845) 2.5V OSCILLATOR ERROR ...
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SG1844/SG1845 Series GRAPH / CURVE INDEX Characteristic Curves FIGURE # 1. DROPOUT VOLTAGE vs. TEMPERATURE 2. OSCILLATOR TEMPERATURE STABILITY 3. CURRENT SENSE TO OUTPUT DELAY vs. TEMPERATURE 4. START-UP CURRENT vs. TEMPERATURE 5. REFERENCE VOLTAGE vs. TEMPERATURE 6. START-UP VOLTAGE ...
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FIGURE 1. — DROPOUT VOLTAGE vs. TEMPERATURE 10.0 SG1844 9.6 9.2 8.8 8.4 8.0 SG1845 -75 ...
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SG1844/SG1845 Series FIGURE 5. — REFERENCE VOLTAGE vs. TEMPERATURE 5.02 5.01 V 5.00 4.99 4.98 -75 -50 -25 0 Junction Temperature - (°C) FIGURE 7. — START-UP VOLTAGE THRESHOLD vs. TEMPERATURE 16.08 16.06 16.04 16.02 16.00 15.98 -75 -50 -25 ...
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FIGURE 9. — OUTPUT SATURATION VOLTAGE vs. OUTPUT CURRENT & TEMPERATURE 2.5 2.0 1.5 1.0 V ...
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SG1844/SG1845 Series OSCILLATOR The oscillator of the 1844/45 family of PWM's is programmed by the external timing components (RT, CT) as shown in Figure 13. V REF GND 1.86 F ≈ FIGURE ...
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Pin numbers referenced are for 8-pin package and pin numbers in parenthesis are for 14-pin package. ...
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SG1844/SG1845 Series 8 (14) 4 (7) 2 (3) SG1844/ 2N2907 Where: 0 ≤ V ≤ 1. 1.43 - 0.23 R and V = ...