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UC2845A Fiches technique(PDF) 2 Page - Microsemi Corporation |
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UC2845A Fiches technique(HTML) 2 Page - Microsemi Corporation |
2 / 8 page C URRENT M ODE PWM C ONTROLLER UC184xA/284xA/384xA PRODUCT DA T ABOOK 1996/1997 Copyright © 1995 Rev. 1.2 12/95 2 P RODUCTION D ATA S HEET ABSOLUTE MAXIMUM RATINGS (Note 1) Supply Voltage (Low Impedance Source) (V CC) ......................................................... 30V Supply Voltage (I CC < 30mA) .......................................................................... Self Limiting Output Current ............................................................................................................. ±1A Output Energy (Capacitive Load) ................................................................................. 5µJ Analog Inputs (V FB & ISENSE) ........................................................................ -0.3V to +6.3V Error Amp Output Sink Current ............................................................................... 10mA Power Dissipation at T A = 25°C (M Package) .............................................................. 1W Storage Temperature Range .................................................................... -65°C to +150°C Lead Temperature (Soldering, 10 Seconds) ............................................................. 300°C PACKAGE PIN OUTS Note 1. Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. Pin numbers refer to DIL packages only. 1 8 27 36 45 M & Y PACKAGE (Top View) M PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θθθθθ JA 95°C/W DM PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θθθθθ JA 165°C/W D PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θθθθθ JA 120°C/W Y PACKAGE: THERMAL RESISTANCE-JUNCTION TO AMBIENT, θθθθθ JA 130°C/W Junction Temperature Calculation: T J = TA + (PD x θJA). The θ JA numbers are guidelines for the thermal performance of the device/pc-board system. All of the above assume no ambient airflow THERMAL DATA DM PACKAGE (Top View) V REF V CC OUTPUT GND COMP V FB I SENSE R T/CT 1 8 27 36 45 V REF N.C. V CC V C OUTPUT GND PWR GND COMP N.C. V FB N.C. I SENSE N.C. R T/CT 1 14 213 312 411 510 69 78 D PACKAGE (Top View) COMP V FB I SENSE R T/CT V REF V CC OUTPUT GND |
Numéro de pièce similaire - UC2845A |
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Description similaire - UC2845A |
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