DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µPC29M00 Series
THREE TERMINAL LOW DROPOUT VOLTAGE REGULATOR
The µ PC29M00 series of low dropout voltage three terminal positive regulators is constructed with PNP output
transistor. The µ PC29M00 series feature the ability to source 0.5 A of output current with a low dropout voltage of
typically 0.5 V.
The power dissipation of the µ PC29M00 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 (µ PC24M00A series).
FEATURES
• Output current in excess of 0.5 A
• Low dropout voltage VDIF = 0.5 V TYP. (at I O = 0.5 A)
• On-chip overcurrent and thermal protection circuit
• On-chip output transistor safe area protection circuit
PIN CONFIGURATION (Marking Side)
µPC29M00HF Series: MP-45G
µPC29M00HB Series: MP-3
µPC29M00T Series: MP-3Z
4
1
2
1
3
2
1: INPUT
2: GND
3: OUTPUT
3
1:
2:
3:
4:
INPUT
GND
OUTPUT
GND (Fin)
The information in this document is subject to change without notice.
Document No. G10027EJ3V0DS00 (3rd edition)
Date Published July 1998 N CP(K)
Printed in Japan
The mark
shows major revised points.
©
1997
µ PC29M00 Series
ABSOLUTE MAXIMUM RATINGS (TA = 25 °C, Unless otherwise specified.)
Rating
Parameter
Symbol
Input Voltage
Internal Power
µ PC29M00HF
µ PC29M00HB, µ PC29M00T
VIN
DissipationNote
20
PT
Unit
V
15
10
W
Operating Ambient Temperature
TA
–30 to +85
°C
Operating Junction Temperature
TJ
–30 to +150
°C
Storage Temperature
Tstg
–55 to +150
°C
Thermal Resistance (Junction to Case)
Rth (J-C)
7
12.5
°C/W
Thermal Resistance (Junction to Ambient)
Rth (J-A)
65
125
°C/W
Note TC = 25 °C, Internally limited
When operating junction temperature rises up to 150 °C, the internal circuit shutdown output voltage.
Caution Exposure to Absolute Maximum Ratings for extended periods may affect device reliability;
exceeding the ratings could cause permanent damage. The parameters apply independently. The
device should be operated within the limits specified under DC and AC Characteristics.
TYPICAL CONNECTION
D1
µ PC29M00
INPUT
OUTPUT
+
CIN
COUT
D2
CIN
: More than 0.1 µ F. Required if regulator is located an appreciable distance from power supply filter. You
COUT
: More than 47 µF. You must use the Low-impedance-type (low ESR) capacitor.
D1
: Need for VO > VIN
D2
: Need a shottky barrier diode for V O < GND.
must use to prevent from the parasitic oscillation.
3
