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NJM2817
LOW DROPOUT VOLTAGE REGULATOR
GENERAL DESCRIPTION The NJM2817 is a low dropout voltage regulator with ON/OFF control. Advanced Bipolar technology achieves low noise, high ripple rejection and low quiescent current. It delivers up to 5V/3A output power with the maximum input voltage of 8V. The NJM2817 is suitable for audio/video and digital applications. FEATURES High Ripple Rejection 65dB typ. (f=1kHz,3V Version) Output Noise Voltage Vno=42µVrms typ. (Vo=3V Version) Output capacitor with 4.7µF ceramic capacitor (Vo≥2.1V) Output Current Io(max.)=3.0A High Precision Output Vo ±1.0% Low Dropout Voltage 0.12V typ. (Io=1.5A, 3.0V Version) ON/OFF Control Internal Short Circuit Current Limit Internal Thermal Overload Protection Package Outline TO-252-5 PIN CONFIGURATION
3
PACKAGE OUTLINE
NJM2817DL3
123 45
1. VIN 2. CONTROL 3. Vo 4. N.C. 5. GND
NJM2817DL3 EQUIVALENT CIRCUIT
VIN
Current Limit
VOUT
CONTROL
Bandgap Reference Thermal Protection
GND
Ver.2010-07-12
-1-
NJM2817
OUTPUT VOLTAGE RANK LIST Device Name VOUT NJM2817DL3-18 1.8V NJM2817DL3-21 2.1V NJM2817DL3-03 3.0V NJM2817DL3-05 5.0V Output voltage options available : 1.8 ~ 5.0V (0.1V step) ABSOLUTE MAXIMUM RATINGS PARAMETER SYMBOL Input Voltage VIN Control Voltage VCONT Power Dissipation Operating Temperature Storage Temperature PD Topr Tstg (Ta=25°C) RATINGS +8 +8 1190(*1) 3125(*2) -40 ∼ +85 -40 ∼ +150
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UNIT V V mW °C °C
(*1) : Mounted on glass epoxy board. (76.2×114.3×1.6mm:EIA/JDEC standard size, 2Layers, copper area 100mm2) (*2) : Mounted on glass epoxy board. (76.2×114.3×1.6mm:EIA/JDEC standard size, 4Layers, (4Layers inner foil : 74.2 x 74.2mm Applying thermal via holes to a board based on JEDEC standard JESD51-5) OPERATING VOLTAGE VIN=VO + ∆VI-O ~ +7V (In case of 2.1V ≤ VO ≤ 5.0V version) VIN=2.3V ~ +7V (In case of VO < 2.1V version) ELECTRICAL CHARACTERISTICS (VIN=Vo+1V, CIN=4.7µF(CIN=10µF:Vo<2.1V), Co=4.7µF(Co=33µF : Vo<2.1V), Ta=25°C) PARAMETER SYMBOL TEST CONDITION MIN. Output Voltage Vo Io=100mA -1.0% Quiescent Current IQ Io=0mA, except ICONT Quiescent Current VCONT=0V IQ (OFF) at Control OFF Output Current Io Vo x 0.9V 3 Line Regulation ∆Vo/∆VIN VIN=Vo+1V ∼ 7V, Io=100mA Load Regulation ∆Vo/∆Io Io=0 ∼ 3.0A 2.1V ≤ Vo < 2.5V 2.5V ≤ Vo < 2.8V Dropout Voltage(*2) Io=1.0A ∆VI -O 2.8V ≤ Vo < 3.4V 3.4V ≤ Vo ≤ 5.0V ein=200mVrms,f=1kHz, Ripple Rejection RR Io=100mA,Vo=3V Version Average Temperature ∆Vo/∆Ta Ta=0 ∼ 85°C, Io=100mA Coefficient of Output Voltage f=10Hz ∼ 80kHz, Io=100mA, Output Noise Voltage VNO Vo=3V Version Control Current ICONT VCONT=1.6V Control Voltage for ON-state VCONT(ON) 1.6 Control Voltage for OFF-state VCONT(OFF) Io≤1.5A, Vo×0.96 2.3 Minimum Input Voltage VIN (MIN.) Vo<2.1V 1.5A