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.
• 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.
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | UPC1944 |
NEC |
ADJUSTABLE PRECISION SHUNT REGULATORS | |
2 | UPC1905 |
NEC |
SWITCHING REGULATOR CONTROL CIRCUIT FOR 500 kHz OPERATION | |
3 | UPC1906 |
NEC |
SWITCHING REGULATOR CONTROL CIRCUIT FOR 500 kHz OPERATION | |
4 | UPC1906 |
NEC |
SWITCHING REGULATOR CONTROL CIRCUIT FOR 500 kHz OPERATION | |
5 | UPC1909 |
NEC |
SWITCHING REGULATOR CONTROL IC | |
6 | UPC1933 |
NEC |
DC-DC CONVERTER CONTROL IC | |
7 | UPC1934 |
NEC |
DC-DC CONVERTER CONTROL IC | |
8 | UPC1935 |
NEC |
DC-DC CONVERTER CONTROL IC | |
9 | UPC1008C |
ETC |
Phase Frequexcy Detector | |
10 | UPC1028H |
NEC |
FM IF Amplifier with Differential Peak Detector | |
11 | UPC1031H |
ETC |
UPC1031H | |
12 | UPC1031H2 |
NEC |
Vertical Deflection Device |