NJM2845/46
LOW DROPOUT VOLTAGE REGULATOR
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. PACKAGE OUTLINE
NJM2845DL1
NJM2846DL3
FEATURES High Ripple Rejection 75dB typ. (f=1kHz,3V Version) Output Noise Voltage Vno=45µVrms typ. (Vo=3V Version) Output capacitor with 2.2µF ceramic capacitor (Vo≥2.6V) Output Current Io(max.)=800mA High Precision Output Vo ±1.0% Low Dropout Voltage 0.18V typ. (Io=500mA) ON/OFF Control (NJM2846) Internal Short Circuit Current Limit Internal Thermal Overload Protection Bipolar Technology Package Outline TO-252-3 (NJM2845DL1), TO-252-5 (NJM2846DL3) PIN CONFIGURATION
2
1.VIN 2.GND 3.VOUT
3
3
1
12345
1.CONTROL 2.VIN 3.GND 4.Vo 5.NC
NJM2845DL1 EQUIVALENT CIRCUIT
NJM2846DL3
V IN Thermal Protection Bandgap Reference
V OUT
VIN Control Bandgap Reference Thermal Protection
VOUT
GND
GND
NJM2845DL1
NJM2846DL3
Ver.2005-01-20
-1-
NJM2845/46
OUTPUT VOLTAGE RANK LIST Device Name VOUT NJM284*DL*-18 1.8V NJM284*DL*-23 2.3V NJM284*DL*-25 2.5V NJM284*DL*-03 3.0V NJM284*DL*-33 3.3V NJM284*DL*-05 5.0V ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation PD (Ta=25°C) RATINGS UNIT +14 V +14(*1) V 10(Tc≤25°C) W 1.0(Ta≤25°C)
Operating Topr -40 ∼ +85 °C Temperature Storage Tstg -40 ∼ +150 °C Temperature (*1): When input voltage is less than +14V, the absolute maximum control voltage is equal to the input voltage. Operating voltage VIN=+2.5V(In case of Vo
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