A6618 AITSEMI | Alldatasheet
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AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 1 - DESCRIPTION FEATURES A6618 series is a group of positive voltage output, low power consumption, low dropout voltage regulator. A6618 can provide output value adjustable from 0.8V to 5.0V. A6618 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module with discharge capability. A6618 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. It uses trimming technique to guarantee output voltage accuracy within ±2%. And it also provides foldback short-circuit protection, thermal protection and output current limit function. The A6618 is available in SOT-25 package.
ORDERING INFORMATION
SPQ: 3,000pcs/Reel A6618E5R A6618E5VR Note V: Halogen free Package R: Tape & Reel AiT provides all RoHS products ⚫ Low Power Consumption: 40μA (Typ.) ⚫ Maximum output current: 600mA ⚫ Low dropout Voltage: 170mV@IOUT=300mA, VOUT=3.3V 355mV@IOUT=600mA, VOUT=3.3V ⚫ Build-in chip enable and discharge circuit ⚫ Input voltage range: 2.5 to 6V ⚫ Adjustable Output from 0.8V to 5.0V ⚫ Output Voltage Accuracy: ±2% ⚫ Output current limit: 1A (Typ.) ⚫ OCP/SCP/TSD protection ⚫ Available in SOT-25 package APPLICATION ⚫ Power source for cellular phones and various kind of PCSs ⚫ Battery Powered equipment ⚫ Power Management of MP3, PDA, DSC, Mouse, PS2 Games ⚫ Reference Voltage Source ⚫ Regulation after Switching Power TYPICAL APPLICATION NOTE: 1) Input capacitor (CIN=1uF) and Output capacitor (COUT=1uF) are recommended in all application circuit. 2) VOUT=VFB*(1+ R2 ), VFB=0.8V
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 2 - PIN DESCRIPTION Top View Pin # Symbol Function
1 VIN
Supply Voltage Input. Supply voltage can range from 1.8V to 6V. Bypass with a 1μF capacitor to GND.
2 GND Ground Pin
Enable Pin. This pin has an internal pull-down resistor. A logic low reduces the supply current to less than 1μA. Connect to IN for normal operation. 4 FB Feedback Pin (adjustable voltage version only). This is used to set the output voltage of the device.
5 VOUT Output Voltage
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 3 - ABSOLUTE MAXIMUM RATINGS Max Input Voltage 8V TJ, Operating Junction Temperature 150°C TA, Ambient Temperature -40°C~85°C Power Dissipation SOT-25 400mW TS, Storage Temperature -40°C~150°C Lead Temperature & Time 260°C,10s Stress beyond above listed “Absolute Maximum Ratings” may lead permanent damage to the device. These are stress ratings only and operations of the device at these or any other conditions beyond those indicated in the operational sections of the specifications are not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. RECOMMENDED WORK CONDITIONS Parameter Value Input Voltage Range 2.5V to 6V Ambient Temperature -40°C to 85°C
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 4 -
ELECTRICAL CHARACTERISTICS
Test Conditions: CIN=1uF, COUT=1uF, TA=25℃, unless otherwise specified. Parameter Symbol Conditions Min. Typ. Max. Unit Input Voltage VIN 2.5 - 6 V Regulated Feedback Voltage VFB VIN=3.3V, IOUT=10mA 0.784 0.8 0.816 V Dropout Voltage VDROP* VOUT=1.8V, IOUT=300mA - 900 1350 mV VOUT=2.5V, IOUT=600mA - 550 825 VOUT=3.3V, IOUT=600mA - 355 500 Line Regulation ΔVOUT ΔVIN × VOUT IOUT=10mA, 2.5V≤VIN≤6V - 0.05 0.2 %/V Load Regulation ΔVOUT/ ΔIOUT VIN=4.3V, VOUT=3.3V 0mA≤IOUT≤600mA - 50 80 mV Supply Current IQ VIN=VOUT+1V - 40 100 μA Supply Current (Standby) ISTANDBY VIN=VOUT+1V, VEN=GND - 0.1 1.0 μA Output Voltage Temperature Coefficient ΔVOUT ΔT × VOUT IOUT=10mA - ±100 - ppm/°C Ripple Rejection PSRR f=1kHz, Ripple=1Vp-p VIN=VOUT+1V - 60 - dB Current Limit ILIM VIN=4.3V, VOUT=3.3V - 1 - A Short Current Limit ISHORT VOUT=0V - 200 - mA Discharge Resistor RDISCHARGE EN=0, VOUT=3V - 280 - ohm EN Input Voltage “H” VENH 1.3 - VIN V EN Input Voltage “L” VENL 0 - 0.35 V Thermal Shutdown Temp TSD - 160 - °C Thermal Shutdown Hysteresis TSH - 30 - °C NOTE: * VDROP=VIN1-(VOUT2*0.98) VOUT2 is the output voltage when VIN = VOUT1+1.0V and IOUT=600mA. VIN1 is the input voltage at which the output voltage becomes 98% of VOUT1 after gradually decreasing the input voltage.
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 5 - TYPICAL PERFORMANCE CHARACTERISTICS 1. Load Regulation (VOUT=1.8V) 2. Load Regulation (VOUT=3.3V) 3. Line Regulation (VOUT=1.8V) 4. Line Regulation (VOUT=3.3V) 5. Dropout Voltage 6. Dropout Voltage vs. Temp (VOUT=3.3V)
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 6 - 7. IQ (VOUT=1.8V) 8. Current Limit vs. VIN 9. EN Chip Enable Response (Orange: VIN; Blue: EN; Green: VOUT) 10. VOUT vs. Temperature 11. Line Transient Response VOUT=3.3V, IOUT=10mA VIN=4.3-5.3V, VOUT p-p=78mV (Orange: VIN; Green: VOUT) 12. Load Transient Response VIN=4.3V, VOUT=3.3V, IOUT=10-600mA Trise=1μs, Tfall=1μs, VOUT p-p=74mV (Pink: IOUT; Orange: VOUT)
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 7 - BLOCK DIAGRAM EXPLANATION A6618 series is a group of positive voltage output, low noise, low power consumption, low dropout voltage regulator. A6618 can provide output value adjustable from 0.8V to 5.0V. A6618 includes high accuracy voltage reference, error amplifier, current limit circuit and output driver module. A6618 has excellent load and line transient response and good temperature characteristics, which can assure the stability of chip and power system. It uses trimming technique to guarantee output voltage accuracy within±2%. And it also provides fold -back short-circuit protection, thermal protection and output current limit function.
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 8 -
PACKAGE INFORMATION
Dimension in SOT-25 (Unit: mm)
AiT Semiconductor Inc. www.ait-ic.com A6618 CMOS LOW DROPOUT REGULATOR (LDO) 600mA ADJUSTABLE, ULTRA-LOW NOISE, ULTRA-FAST REV1.0 - JAN 2021 RELEASED - - 9 - IMPORTANT NOTICE AiT Semiconductor Inc. (AiT) reserves the right to make changes to any its product, specifications, to discontinue any integrated circuit product or service without notice, and advises its customers to obtain the latest version of relevant information to verify, before placing orders, that the information being relied on is current. AiT Semiconductor Inc. 's integrated circuit products are not designed, intended, authorized, or warranted to be suitable for use in life support applications, devices or systems or other critical ap plications. Use of AiT products in such applications is understood to be fully at the risk of the customer. As used herein may involve potential risks of de ath, personal injury, or server e property, or environmental damage. In order to minimize risks associated with the customer's applications, the customer should provide adequate design and operating safeguards. AiT Semiconductor Inc. assumes to no liability to customer product design or application support. AiT warrants the performance of its products of the specifications applicable at the time of sale.