DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC2900 Series
THREE TERMINAL LOW DROPOUT VOLTAGE REGULATOR
The µPC2900 ...
DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC2900 Series
THREE TERMINAL LOW DROPOUT VOLTAGE
REGULATOR
The µPC2900 series of low dropout voltage three terminal positive
regulators is constructed with
PNP output
transistor. The µPC2900 series feature the ability to source 1 A of output current with a low dropout voltage of typically 0.7 V. The power dissipation of the µPC2900 series can be drastically reduced compared with the conventional three terminal positive voltage
regulators that is constructed with
NPN output
transistor. Also, this series corresponds to the low voltage output (3 V, 3.3 V) which is not in the conventional low dropout
regulators (µPC2400A series).
FEATURES
Output current in excess of 1.0 A Low dropout voltage VDIF = 0.7 V TYP. (at IO = 1 A) On-chip overcurrent and thermal protection circuit On-chip output
transistor safe area protection circuit
PIN CONFIGURATION (Marking Side)
µPC2900HF Series: MP-45G µPC2900HB Series: MP-3 µPC2900T Series: MP-3Z
4
1
2
3 1: INPUT 2: GND 3: OUTPUT
1
2
3
1: 2: 3: 4:
INPUT GND OUTPUT GND (Fin)
The information in this document is subject to change without notice. Document No. G10026EJ3V0DS00 (3rd edition) Date Published July 1998 N CP(K) Printed in Japan
The mark
shows major revised points.
©
1997
µPC2900 Series
BLOCK DIAGRAM
INPUT
Safe operating area protection Start-up circuit Reference voltage
Error amp.
Drive circuit
Saturation protection OUTPUT
Thermal shut down Over current protection ...