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NIKO-SEM
1A Fixed and Adjustable Low Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252, TO-220,TO-263
GENERAL DESCRIPTION
The L1117 Series are positive and low dropout three-terminal voltage regulators with 1A output current capability. These devices are designed for use in low voltage applications that offers lower dropout voltage and faster transient response. These devices are fully protected against over current faults, over temperature operation, reversed input polarity, reversed lead insertion, transient voltage spike …etc. On-Chips trimming the reference voltage to 2% and features the low dropout of maximum 1.45 volts. The L1117 Series regulators offer fixed and adjustable voltage options available in the popular industry standard SOT-223, TO-220, TO-252 and TO-263 packages.
FEATURES
z Fixed 2.5V, 2.85V, 3.3V, 5V or adjustable output voltage z Low dropout voltage: 1.2V typical at up to 1A z Low ground current z Fast transient response z Current & thermal limiting z Line regulation: 0.5% typical z Load regulation: 0.5% typical zSOT-223,TO-220,TO-252,TO-263 package
APPLICATIONS
z 2.85V active SCSI terminators z 8-15V to 5V linear regulators z 5V to 2.5V or 3.3V linear regulators z Low voltage micro-controllers z Battery Chargers z Motherboard clock supplies z Post regulator for switching supplies z Micro-controllers
ABSOLUTE MAXIMUM RATINGS
z Maximum Supply Voltage z Power Dissipation z Thermal Resistance Junction to Case, θJC z Thermal Resistance Junction to Ambient, θJA SOT-223 TO-252 TO-220 TO-263 15V* Internally Limited 16 °C/W z Operating Junction Temperature Range z Storage Temperature Range z Lead Temperature (Soldering, 10 Seconds) 0 to 125 °C -40 to 150 °C 260 °C
158 °C/W 70 °C/W 50 °C/W 60 °C/W
* When considering short circuits to ground, the maximum input-to-output differential voltage shall not be allowed greater than approximate 2~3V at values of supply voltage in excess of 10V, continuous short-circuits can exceed the power dissipation ratings and cause eventual destruction.
1
JUL-27-2001
DataSheet 4 U .com
www.DataSheet4U.com
NIKO-SEM
1A Fixed and Adjustable Low Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252, TO-220,TO-263
ELECTRICAL CHARACTERISTICS for ADJUSTABLE(Unless otherwise specified, TA = 25°C)
Parameter Symbol Test Conditions Typical 1.25V VO 1.2V 0.5% 0.5% 10mA 55µA 1.2A 0.003% of VOUT 72dB 100µA 1.1A (Min) Limits 1.23VMin 1.27VMax 0.98VO(Min) 1.02VO(Max) 1.45V 2% 2.5%
Reference Voltage (Adjustable version) VREF VIN = 5V, IOUT = 10mA Output Voltage VO VIN = 5V, IOUT = 10mA (Fixed version) Dropout Voltage VD ΔVREF = 1%, IOUT = 1A Line Regulation REG(LINE) (VOUT + 1.5V) ≤ VIN ≤ 15V, IOUT = 10mA Load Regulation REG(LOAD) (VIN -VOUT) = 2V, 10mA ≤ IOUT ≤ 1A
Minimum Load Current
IO IADJ ICL VN RA
1.5V ≤ (VIN -VOUT) ≤ 5.75V VIN - VOUT = 2V f = 120Hz, CADJ = 22µF for ADJ pin, VIN = 5V, IOUT = 1A
Adjust Pin Current Current Limit RMS Output Noise Ripple Rejection Ratio
60dB (Min)
ELECTRICAL CHARACTERISTICS for L1117-2.5(Unless otherwise specified, TA = 25 °C)
Parameter Output Voltage (Fixed version) Dropout Voltage Line Regulation Load Regulation
Minimum Load Current
Symbol VO
Test Conditions VIN = 5V, IOUT = 10mA
Typical VO 1.2V 0.5% 0.5% 10mA 55µA 1.2A 0.003% of VOUT 72dB
Limits 2.45V(Min) 2.55V(Max) 1.45V 2.0% 2.0% 100µA 1.1A (Min)
VD ΔVO = 1%, IOUT = 1A REG(LINE) (VOUT + 1.5V) ≤ VIN ≤ 15V, IOUT = 10mA REG(LOAD) (VIN -VOUT) = 2V, 10mA ≤ IOUT ≤ 1A IO IGND ICL VN RA f = 120Hz, Co=22Uf,VIN = 5V, IOUT = 1A 1.5V ≤ (VIN -VOUT) ≤ 5.75V VIN - VOUT = 2V
GND Pin Current Current Limit RMS Output Noise Ripple Rejection Ratio
60dB (Min)
2
JUL-27-2001
DataSheet 4 U .com
www.DataSheet4U.com
NIKO-SEM
1A Fixed and Adjustable Low Dropout Linear Regulator (LDO)
L1117 Series
SOT-223, TO-252, TO-220,TO-263
ELECTRICAL CHARACTERISTICS for L1117-2.85(Unless otherwise specified, TA = 25 °C)
Parameter Output Voltage (Fixed version) Dropout Voltage Line Regulation Load Regulation
Minimum Load Current
Symbol VO
Test Conditions VIN = 5V, IOUT = 10mA
Typical VO 1.2V 0.5% 0.5% 10mA 55µA 1.2A 0.003% of VOUT 72dB
Limits 2.793V(Min) 2.907V(Max) 1.45V 2.0% 2.0% 100µA 1.1A (Min)
VD ΔVO = 1%, IOUT = 1A REG(LINE) (VOUT + 1.5V) ≤ VIN ≤ 8V, IOUT = 10mA REG(LOAD) (VIN -VOUT) = 2V, 10mA ≤ IOUT ≤ 1A IO IGND ICL VN RA f = 120Hz, Co=22Uf,VIN = 5V, IOUT = 1A 1.5V ≤ (VIN -VOUT) ≤ 5.75V VIN - VOUT = 2V
GND Pin Current Current Limit RMS Output Noise Ripple Rejection Ratio
60dB (Min)
ELECTRICAL CHARACTERISTICS for L1117-3.3(Unless otherwise specified, TA = 25 °C)
Parameter Output Voltage (Fixed version) Dropout Voltage Line Regulation Load Regulation
Minimum Load Current
Symbol VO
Test Conditions VIN = 5V, IOUT = 10mA
Typical VO 1.2V 0.5% 0.5% 10mA 55µA 1.2A 0.003% of VOUT 72dB
Limits 3.234V(Min) 3.367V(Max) 1.45V 2.0% 2.0% 100µA 1.1A (Min)
VD ΔVO = 1%, IOUT = 1A REG(LINE) (VOUT + 1.5V) ≤ VIN ≤ 15V, IOUT = 10mA REG(LOAD) (VIN -VOUT) = 2V, 10.