UPC1943

DATA SHEET BIPOLAR ANALOG INTEGRATED CIRCUIT µ PC1943,1944 ADJUSTABLE PRECISION SHUNT REGULATORS DESCRIPTION The µ PC1943,1944 are adjustable precision shunt regulators with guaranteed thermal stability. The output voltage can be set to any value between reference voltage (1.26 V) and 24 V by two external resistors. These ICs can apply to error amplifier of switching regulators. FEATURES Low voltage operation and High accuracy. Adjustable output voltage by two external resistors. Pin compatible to µ PC1093. VREF = 1.26 V ± 2.4 % VREF ≤ VOUT ≤ 24 V ORDERING INFORMATION Part Number Package Power mini mold (SOT-89) Power mini mold (SOT-89) 3-pin plastic SIP (TO-92) 8-pin plastic SOP (5.72 mm (225)) BLOCK DIAGRAM K µ PC1943T µ PC1944T µ PC1944J µ PC1944GR REF A PIN CONFIGURATION (Marking Side) Power mini mold (SOT-89) µ PC1943T µ PC1944T A A 3-pin plastic SIP (TO-92) µ PC1944J 3-pin plastic SOP (5.72 mm (225)) µ PC1944GR K 1 NC 2 8 REF 7 NC 6 A 5 NC 1 1 REF 2 A 3 K 1 K 2 A 3 REF 2 3 NC 3 NC 4 REF A K A: Anode K: Cathode REF: Reference NC: No Connection The information in this document is subject to change without notice. Before using this document, please confirm that this is the latest version. Not all devices/types available in every country. Please check with local NEC representative for availability and additional information. Document No. G10239EJ3V0DS00 (3rd edition) (Previous No. IC-3454) Date Published March 2000 NS CP (K) Printed in Japan Th...