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UPC2925 の電気的特性と機能

UPC2925のメーカーはNECです、この部品の機能は「THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR」です。


製品の詳細 ( Datasheet PDF )

部品番号 UPC2925
部品説明 THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR
メーカ NEC
ロゴ NEC ロゴ 




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UPC2925 Datasheet, UPC2925 PDF,ピン配置, 機能
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)
Printed in Japan
The mark # shows major revised points.
©
2000,2001

1 Page





UPC2925 pdf, ピン配列
µPC2918, 2925, 2926
ABSOLUTE MAXIMUM RATINGS (TA = 25°C unless otherwise specified)
Parameter
Input Voltage
Internal Power Dissipation (TC = 25°C)
Operating Ambient Temperature
Operating Junction Temperature
Storage Temperature
Thermal Resistance (junction to case)
Thermal Resistance (junction to ambient)
Symbol
VIN
PT
TA
TJ
Tstg
Rth(J-C)
Rth(J-A)
Rating
–0.3 to +20
10Note
–30 to +85
–30 to +150
–55 to +150
12.5
125
Unit
V
W
°C
°C
°C
°C/W
°C/W
Note Internally limited. When the operating junction temperature rises over 150°C, the internal circuit shuts down the
output voltage.
Caution If the absolute maximum rating of any of the above parameters is exceeded even momentarily, the
quality of the product may be degraded. In other words, absolute maximum ratings specify the
values exceeding which the product may be physically damaged. Be sure to use the product with
these ratings never exceeded.
# TYPICAL CONNECTION
D1
INPUT
CIN
µPC2918, 2925, 2926
COUT
+
OUTPUT
D2
CIN: 0.1 µF or higher. Set this value according to the length of the line between the regulator and INPUT pin. Be sure
to connect CIN to prevent parasitic oscillation. Use of a film capacitor or other capacitor with excellent voltage and
temperature characteristics is recommended. If using a laminated ceramic capacitor, it is necessary to ensure
that CIN is 0.1 µF or higher for the voltage and temperature range to be used.
COUT: 10 µF or higher. Be sure to connect COUT to prevent oscillation and improve excessive load regulation. Place
CIN and COUT as close as possible to the IC pins (within 2 cm). Also, use an electrolytic capacitor with low
impedance characteristics if considering use at sub-zero temperatures.
D1: If the OUTPUT pin has a higher voltage than the INPUT pin, connect a diode.
D2: If the OUTPUT pin has a lower voltage than the GND pin, connect a Schottky barrier diode.
Caution Make sure that no voltage is applied to the OUTPUT pin from external.
Data Sheet G14983EJ3V0DS
3


3Pages


UPC2925 電子部品, 半導体
TYPICAL CHARACTERISTICS (Reference Values)
PD vs. TA
12
10
8
With infinite heatsink
6
4
2
1.0
0
0
Without heatsink
50 100 150
TA - Operating Ambient Temperature - °C
2.0
IO = 5 mA
IO = 0.5 A
1.5
IO = 1 A
VO vs. VIN (µPC2918)
TJ = 25˚C
1.0
0.5
0
012345678
VIN - Input Voltage - V
VO vs. VIN (µPC2925)
3.0
TJ = 25˚C
IO = 5 mA
IO = 0.5 A
2.0
IO = 1 A
1.0
0
012345678
VIN - Input Voltage - V
µPC2918, 2925, 2926
VO vs. TJ
50
IO = 5 mA
25
0
µPC2918
–25 µPC2925
–50
–50
0 50 100
TJ - Operating Junction Temperature - °C
150
IBIAS (IBIAS(s)) vs. VIN (µPC2918)
50
TJ = 25˚C
40
30
20
10
0
0
50
40
IO = 1 A
IO = 0.5 A
IO = 0 A
5 10 15
VIN - Input Voltage - V
20
IBIAS (IBIAS(s)) vs. VIN (µPC2925)
TJ = 25˚C
30
20
10
0
0
IO = 1 A
IO = 0.5 A
IO = 0 A
5 10 15
VIN - Input Voltage - V
20
6 Data Sheet G14983EJ3V0DS

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
UPC2925

THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR

NEC
NEC
UPC2925T

THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR

NEC
NEC
UPC2926

THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR

NEC
NEC
UPC2926T

THREE-TERMINAL LOW DROPOUT VOLTAGE REGULATOR

NEC
NEC


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