AMC7637 ULTRA LOW IQ 300mA LOW DROPOUT REGULATOR www.addmtek.com DESCRIPTION FEATURES The AMC7637 is an ultra low quiescent current, and low dropout regulator rated for 300mA output current. The low power consumption and high accuracy is achieved through CMOS technology and internal trimmed reference voltage. The AMC7637 consists of a high-precision voltage reference, error correction circuit, and a current limit output driver. The fast transient response is an outstanding feature for applications with various loads. Ultra low quiescent current of 15µA in typical. Typical 2% internally trimmed output. Output current is excess of 300mA. Low Dropout Voltage. P-MOS output stage with low RDS(ON). Short circuit protection. Internal thermal overload protection. Available in 3-Lead surface mount SOT-23 package. TYPICAL APPLICATION APPLICATIONS VOUT VIN AMC7637 CIN COUT 1µF 2.2µF Digital Camera Battery Powered Applications PDA Smart Phones PACKAGE PIN OUT VOLTAGE OPTIONS AMC7637-1.5 1.5V Fixed AMC7637-1.8 1.8V Fixed AMC7637-2.5 2.5V Fixed AMC7637-3.0 3.0V Fixed AMC7637-3.3 3.3V Fixed VOUT VIN GND 3-Pin Plastic SOT-23 Surface Mount ORDER INFORMATION TA ( °C ) -40 to +85 DB SOT-23 3-pin AMC7637-X.XDBF (Lead Free) Note: 1. All surface-mount packages are available in Tape & Reel. Append the letter “T” to part number (i.e. AMC7637-X.XDBFT). Note: 2. The letter ”F” is marked for Lead Free process. Copyright © 2007 ADDtek Corp. 1 DD053_C -- JUNE 2007 AMC7637 ABSOLUTE MAXIMUM RATINGS (Note) 8V 150°C -65°C to 150°C 260°C Input Voltage, VIN Maximum Operating Junction Temperature, TJ Storage Temperature Range Lead Temperature (soldering, 10 seconds) Note: Exceeding these ratings could cause damage to the device. All voltages are with respect to Ground. Currents are positive into, negative out of the specified terminal. THERMAL DATA Thermal Resistance from Junction to Ambient, θ JA 250 OC /W Junction Temperature Calculation: TJ = TA + (PD × θ JA). The θJA numbers are guidelines for the thermal performance of the device/pc-board system. Connect the ground pin to ground using a large pad or ground plane for better heat dissipation. All of the above assume no ambient airflow. Maximum Power Calculation: PD(MAX)= TJ(MAX) – TA(MAX) θJA TJ(OC): Maximum recommended junction temperature TA(OC): θJA( C /W): O Ambient temperature of the application Junction-to-Ambient temperature thermal resistance of the package, and other heat dissipating materials. The maximum power dissipation for a single-output regulator is: PD(MAX) = [(VIN(MAX) - VOUT(NOM))] × IOUT(NOM) + VIN(MAX) × IQ Where: Then VOUT(NOM) = the nominal output voltage IOUT(NOM) = the nominal output current, and IQ = the quiescent current the regulator consumes at IOUT(MAX) VIN(MAX) = the maximum input voltage θJA = (125 OC – TA)/PD BLOCK DIAGRAM VIN Current Limiter VOUT VREF GND Copyright © 2007 ADDtek Corp. 2 DD053_C -- JUNE 2007 AMC7637 RECOMMENDED OPERATING CONDITIONS Parameter Symbol Min. VIN IO NOTE Input Voltage Load Current (with adequate heat sinking) Input Capacitor (VIN to GND) Output Capacitor with ESR of 10Ω max. (VOUT to GND) Operating ambient temperature range Operating junction temperature TA TJ Typ. 5 0.1 1.0 -40 Max. Units 7 300 V mA µF µF O C O C 85 125 Note : VIN(MIN) = VOUT + VDROP ELECTRICAL CHARACTERISTICS Unless otherwise specified, VIN = VO(TYP) + 1V, IO = 10mA, COUT = 2.2µF, TA=25 OC, and are for DC characteristics only. testing techniques are used which maintains junction and case temperatures equal to the ambient temperature.) Parameter Symbol Output Voltage Accuracy Line Regulation ∆VOI Load Regulation ∆VOL Dropout Voltage VDROP Ground Pin Current Current Limit Output Voltage Temperature Coefficient Copyright © 2007 ADDtek Corp. VO IQ ICL Conditions IO = 10mA Min (Low duty cycle pulse Typ -2 VIN = (VO + 0.5V) to 8V 0.1 10mA ≤ IO ≤100mA 10mA ≤ IO ≤ 300mA VO(NOM)≦2.0V IO = 100mA VO=VO(NOM)-2.0% 2.0V＜VO(NOM) 1.3V≦VO(NOM)≦2.0V IO = 300mA 2.0V＜VO(NOM)≦2.8V VO=VO(NOM)-2.0% 2.8＜VO(NOM) 15 45 IO = 10mA~300mA 15 VIN = VOUT+ 0.5V Max Units +2 0.3 30 80 300 200 1300 600 500 30 % %/V 350 IO=100mA, -40°C ≤ TJ ≤ 125°C 3 mV mV µA mA ±100 DD053_C ppm/OC -- JUNE 2007 AMC7637 CHARACTERIZATION CURVES VIN= 5V，CIN=1µF，COUT= 2.2µF，TA=25 OC unless otherwise specified. Load Regulation vs. Load Current Load Regulation vs. Load Current 50 50 AMC7637-3.3 Load Regulation (mV) Load Regulation (mV) AMC7637-2.5V 40 30 20 10 0 40 30 20 10 0 100 150 200 250 300 350 100 150 Load Current (mA) 300 350 Output Voltage vs. Supply Voltage 3.40 2.60 AMC7637-2.5V 2.58 AMC7637-3.3V 3.38 2.55 Output Voltage (V) Output Voltage (V) 250 Load Current (mA) Output Voltage vs. Supply Voltage 2.53 2.50 2.48 2.45 3.35 3.33 3.30 3.28 3.25 3.23 2.43 3.20 2.40 3.5 4.5 5.5 6.5 3.5 7.5 4.5 Supply Voltage (V) 5.5 6.5 7.5 Supply Voltage (V) Ground Current vs. Load Current Ground Current vs. Load Current 30 30 AMC7637-3.3V AMC7637-2.5V 25 Ground Current (uA) 25 Ground Current (uA) 200 20 15 10 5 20 15 10 5 0 0 0 100 200 300 400 0 500 200 300 400 500 Load Current (mA) Load Current (mA) Copyright © 2007 ADDtek Corp. 100 4 DD053_C -- JUNE 2007 AMC7637 Dropout Voltage vs. Load Curent 800 800 700 700 600 Dropout Voltage (mV) Dropout Voltage (mV) Dropout Voltage vs. Output Voltage Io=300mA 500 Io=200mA 400 300 Io=100mA 200 100 V OUT =1.8V V OUT =1.5V 600 500 400 300 V OUT =2.5V 200 V OUT =3.3V 100 0 0 1.5 1.8 2.5 3.3 0 50 100 Output Voltage (V) 150 200 250 300 Load Current Output Voltage vs. Tem perature 3.40 AMC7637-3.3V V IN=5V Output Voltage (V) 3.35 3.30 IO=100m A 3.25 IO=300m A 3.20 3.15 3.10 -40 -20 0 20 40 60 80 100 120 140 160 Load Transient Response Load Transient Response VIN=5V, CIN=1uF, COUT=2.2uF,TA=25℃ VIN=5V, CIN=1uF, COUT=2.2uF,TA=25℃ AMC7637-2.5 VO (100mV/DIV) VO (100mV/DIV) Temperature ( °C) IO= 10mA - 300mA AMC7637-3.3 IO (200mA/DIV) IO (200mA/DIV) IO= 10mA - 300mA SR=2mA/us Copyright © 2007 ADDtek Corp. TIME= 200 us/DIV SR=2mA/us 5 TIME= 200 us/DIV DD053_C -- JUNE 2007 AMC7637 PACKAGE Symbol XX: Output Voltage Options JTXXY 15 = 1.5V, 18 = 1.8V, 25 = 2.5V, 30 = 3.0V, 33 = 3.3V Y: A/T Site Surface Mount SOT-23 INCHES D C MIN L H E M e A A2 A1 MILLIMETERS TYP MAX MIN TYP MAX A 0.039 0.043 0.051 1.00 1.10 1.30 A1 0.000 0.004 0.00 - 0.10 A2 0.028 0.032 0.035 0.70 0.80 0.90 b 0.014 0.016 0.020 0.35 0.40 0.50 C 0.004 0.005 0.010 0.10 0.15 0.25 D 0.106 0.114 0.122 2.70 2.90 3.10 E 0.055 0.063 0.071 1.40 1.60 1.80 - e 0.075 TYP. H 0.102 0.110 0.118 2.60 1.90 TYP. 2.80 3.00 L 0.015 - - 0.37 - - M 1° 5° 9° 1° 5° 9° b Surface Mount SOT-23 Carrier Dimensions A B M E MILLIMETERS D F N C A 4.0 ± 0.1 M 1.5 ± 0.1 B 2.0 ± 0.05 N 1.1 ± 0.1 C 4.0± 0.1 D 2.5 ± 0.05 E 1.75 ± 0.1 F 6.0 ± 0.2 DIRECTION OF FEED Copyright © 2007 ADDtek Corp. 6 DD053_C -- JUNE 2007 AMC7637 IMPORTANT NOTICE ADDtek reserves the right to make changes to its products or 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. A few applications using integrated circuit products may involve potential risks of death, personal injury, or severe property or environmental damage. ADDtek 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 applications. Use of ADDtek products in such applications is understood to be fully at the risk of the customer. In order to minimize risks associated with the customer’s applications, the customer should provide adequate design and operating safeguards. ADDtek assumes to no liability to customer product design or application support. ADDtek warrants the performance of its products to the specifications applicable at the time of sale. ADDtek Corp. 9F, No. 20, Sec. 3, Bade Rd., Taipei, Taiwan, 105 TEL: 2-25700299 FAX: 2-25700196 Copyright © 2007 ADDtek Corp. 7 DD053_C -- JUNE 2007