Harman Kardon AVR 355 Service Manual page 86

harman/kardon
GENERAL DESCRIPTION
The NJM2845 is low dropout voltage regulator. Advanced
Bipolar technology achieves low noise, high ripple rejection
and low quiescent current.
NJM2845 is 3 terminal type and NJM2846 is ON/OFF control
built in type. These product can be selected according to the
applications.
FEATURES
High Ripple Rejection
Output Noise Voltage
Output capacitor with 2.2µF ceramic capacitor (Vo≥2.6V)
Output Current
High Precision Output
Low Dropout Voltage
ON/OFF Control
Internal Short Circuit Current Limit
Internal Thermal Overload Protection
Bipolar Technology
Package Outline
PIN CONFIGURATION
2
1 3
NJM2845DL1
EQUIVALENT CIRCUIT
V
IN
Bandgap
Reference
GND
NJM2845DL1
Ver.2005-01-20
LOW DROPOUT VOLTAGE REGULATOR
75dB typ. (f=1kHz,3V Version)
Vno=45µVrms typ. (Vo=3V Version)
Io(max.)=800mA
Vo ±1.0%
0.18V typ. (Io=500mA)
(NJM2846)
TO-252-3 (NJM2845DL1), TO-252-5 (NJM2846DL3)
3
1.V
IN
2.GND
3.V
OUT
1 2 3 4 5
NJM2846DL3
V
OUT
Thermal
Protection
PACKAGE OUTLINE
NJM2845DL1
1.CONTROL
2.V
IN
3.GND
4.Vo
5.NC
V
IN
Control
Bandgap
Reference
GND
AVR 355/230 Service Manual
NJM2845/46
NJM2846DL3
Thermal
Protection
NJM2846DL3
Page 86 of 125
V
OUT
- 1 -