UPC2918 Datasheet, PDF (1/12 Pages) NEC – THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR

DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC2918,2925,2926
THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR
# _DESCRIPTION
The µPC2918, 2925 and 2926 are three-terminal low dropout voltage regulators with the 1-A output. The µPC2918
outputs 1.8 V, the µPC2925 outputs 2.5 V and the µPC2926 outputs 2.6 V. Since these regulators use a PNP
transistor for the output stage, they achieve a low dropout voltage of 0.7 V TYP. at IO = 1 A and minimize the power
dissipation of the IC. As a result, these regulators can be used to realize sets with lower voltage and power
dissipation.
FEATURES
• Output current capacity: 1 A
• Low dropout voltage (VDIF = 0.5 V MAX. (at IO = 0.5 A))
• Output voltage accuracy: ±2%
• On-chip saturation protector rising edge of input voltage
(at low input voltage)
• On-chip overcurrent limiter and thermal protection
• On-chip output transistor safe operation area protection
PIN CONFIGURATION (Marking Side)
4
123
1: INPUT
2: GND
3: OUTPUT
4: GND (Fin)
BLOCK DIAGRAM
INPUT
Error
Amp.
Safe operation
area protection
OUTPUT
Overcurrent
protection
GND
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. G14983EJ3V0DS00 (3rd edition)
Date Published May 2001 NS CP(K)
The mark # shows major revised points.
©
Printed in Japan
2000,2001