SG1846J MICROSEMI, SG1846J Datasheet
SG1846J
Specifications of SG1846J
Available stocks
Related parts for SG1846J
SG1846J Summary of contents
Page 1
... Under-voltage lockout Soft-start capability Shutdown capability 500KHz operation HIGH RELIABILITY FEATURES - SG1846 Available to MIL-STD - 883 Radiation data available LMI level "S" processing available 1 Microsemi Inc. 11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570 ...
Page 2
ABSOLUTE MAXIMUM RATINGS Supply Voltage (+V ) .......................................................... 40V IN Collector Supply Voltage(V ) .............................................. 40V C Analog Inputs (Pins & 16) ...................... -0. Logic Input ........................................................... -0.3V to 5.5V Soure/Sink Load current (continuous) ...
Page 3
ELECTRICAL CHARACTERISTICS Parameter Oscillator Section (Note 9) Initial Accuracy Voltage Stability Temperature Stability (Note 4) Sync Output High Level Sync Output Low Level Sync Input High Level Sync Input Low Level Sync Input Current Error Amp Section Input Offset Voltage ...
Page 4
ELECTRICAL CHARACTERISTICS Parameter Under-Voltage Lockout Section Start-Up Threshold Threshold Hysteresis Total Standby Current Supply Current Note 4. These parameters although guaranteed over the recommended operating conditions, are not tested in production. Note 5. Parameter measured at trip point of latch ...
Page 5
CHARACTERISTIC CURVES (continued) FIGURE 7. MINIMUM SCR LATCH CURRENT FIGURE 10. ERROR AMPLIFIER INPUT OFFSET VOLTAGE VS. TEMPERATURE FIGURE 13. OUTPUT TRANSISTOR SATURATION VOLTAGE VS. OUTPUT CURRENT (SOURCE TRANSISTOR) Rev 1.1a Copyright 1994 FIGURE 8. CURRENT SENSE DELAY VS. TEMPERATURE ...
Page 6
CHARACTERISTIC CURVES (continued) FIGURE 16. OSCILLATOR FREQUENCY VS. TEMPERATURE APPLICATION INFORMATION Oscillator frequency is approximated by the formula: f Rev 1.1a Copyright 1994 FIGURE 17. OSCILLATOR FREQUENCY VS. TEMPERATURE FIGURE 19- OSCILLATOR FREQUENCY CURVES FIGURE 20 - OSCILLATOR CIRCUIT 6 ...
Page 7
APPLICATION INFORMATION FIGURE 21 - ERROR AMP OUTPUT CONFIGURATION (Error amplifier can source up to 0.5mA) Rev 1.1a Copyright 1994 (continued) A small RC filter may be required in some applications to reduce switch transients. Differential input allows remote, noise ...
Page 8
APPLICATIONS INFORMATION Rev 1.1a Copyright 1994 (continued) FIGURE 24 - BUCK CONVERTER WITH CURRENT SENSE WINDING FIGURE 25 - PUSH/PULL CONVERTER WITH SLOPE COMPENSATION 8 SG1846 11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 FAX: (714) 893-2570 ...
Page 9
APPLICATIONS INFORMATION V REF < 0.8mA R 1 FIGURE 28 - SHUTDOWN WITH AUTO-RESTART V REF If < 0.8mA the shutdown latch will commutate R 1 when I < 0.8mA and a restart cycle will be initiated. SS Rev 1.1a ...
Page 10
... CONNECTION DIAGRAMS & ORDERING INFORMATION Package Part No. 16-PIN CERAMIC DIP SG1846J/883B J - PACKAGE SG1846J/DESC SG1846J SG2846J SG3846J SG2846N 16-PIN PLASTIC DIP N - PACKAGE SG3846N 16-PIN WIDEBODY SG2846DW PLASTIC S.O.I.C SG3846DW DW - PACKAGE 16-PIN CERAMIC SG1846F/DESC FLAT PACK F - PACKAGE (Note 3) 20-PIN CERAMIC SG1846L/883B LEADLESS CHIP CARRIER ...