DataSheet.es    


PDF UPC1944J Data sheet ( Hoja de datos )

Número de pieza UPC1944J
Descripción ADJUSTABLE PRECISION SHUNT REGULATORS
Fabricantes NEC 
Logotipo NEC Logotipo



Hay una vista previa y un enlace de descarga de UPC1944J (archivo pdf) en la parte inferior de esta página.


Total 12 Páginas

No Preview Available ! UPC1944J Hoja de datos, Descripción, Manual

DATA SHEET
BIPOLAR ANALOG INTEGRATED CIRCUIT
µ PC1943,1944
ADJUSTABLE PRECISION SHUNT REGULATORS
DESCRIPTION
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 external resistors.
• Pin compatible to µ PC1093.
VREF = 1.26 V ± 2.4 %
VREF VOUT 24 V
ORDERING INFORMATION
Part Number
Package
µ PC1943T
µ PC1944T
µ PC1944J
µ PC1944GR
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
REF
K
A
PIN CONFIGURATION (Marking Side)
Power mini mold (SOT-89)
µ PC1943T
µ PC1944T
AA
123
REF A K
123
K A REF
3-pin plastic SIP (TO-92)
µ PC1944J
3-pin plastic SOP (5.72 mm (225))
µ PC1944GR
1 23
K1
NC 2
NC 3
NC 4
8 REF
7 NC
6A
5 NC
REF A K
A: Anode
K: Cathode
REF: Reference
NC: No Connection
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. G10239EJ3V0DS00 (3rd edition)
(Previous No. IC-3454)
Date Published March 2000 NS CP (K)
Printed in Japan
The mark shows major revised points.
©
1994, 2000

1 page




UPC1944J pdf
µ PC1943,1944
IREF vs TA
IKoff vs TA
4.0 0.2
VKA = VREF, IK = 10 mA,
VKA = 24 V
R1 = 10 k, R2 =
VREF = 0 V
3.0
2.0 0.1
1.0
0 20 0 20 40 60 80 100 120
TA - Operating Ambient Temperature - °C
Av, φ vs f
60 +90
Av
40
0
0 20 0 20 40 60 80 100 120
TA - Operating Ambient Temperature - °C
| ZKA | vs f
50
VKA = VREF
1mA IK 30 mA
10
φ
20
220
0
IK
υo
υin
10 k
10 k
201k
(IK = 10 mA)
10k 100k 1M
f - Frequency - Hz
90
180
10M270
1.0
0.1
1k
10k 100k 1M
f - Frequency - Hz
10M
2.0
1.8
a: VKA = VREF
b: VKA = 3 V
1.6 c: VKA = 5 V
Stability Area
1.4
1.2 a
1.0 Stable
0.8
c
0.6
0.4
0.2
0
0.001
b
Unstable
0.01 0.1
1
CKA - Lode Capacitance - µ F
Stable
10
Test Circuit
a:
150
IKA
CKA
b, c:
150
IKA
R
10 k
CKA
CKA: Monolithic Ceramic Capacitor
Caution of Stability Area
If the Aluminum electrolytic capacitor is used, it should be kept CKA 6.8 µ F. When using plural different types of
capacitors, each capacitor is needed to be stable independently.
Data Sheet G10239EJ3V0DS00
5

5 Page





UPC1944J arduino
[MEMO]
µ PC1943,1944
Data Sheet G10239EJ3V0DS00
11

11 Page







PáginasTotal 12 Páginas
PDF Descargar[ Datasheet UPC1944J.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
UPC1944ADJUSTABLE PRECISION SHUNT REGULATORSNEC
NEC
UPC1944GRADJUSTABLE PRECISION SHUNT REGULATORSNEC
NEC
UPC1944JADJUSTABLE PRECISION SHUNT REGULATORSNEC
NEC
UPC1944TADJUSTABLE PRECISION SHUNT REGULATORSNEC
NEC

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar