Advanced Monolithic Systems AMS6104 1A SWITCH BOOST CONVERTER RoHS compliant FEATURES APPLICATIONS • Internal Power Switch • Output Voltage up to 20V • Up to 89% Efficiency • Low 0.08µA Shutdown Supply Current • Internal Current Limit • Thermal Shutdown • Available in 5-Pin SOT-23 Package • Handheld Computers, PDA’s • Cell Phones • Digital Still and Video Games • Small LCD Displays GENERAL DESCRIPTION The AMS6104 is an adjustable step-up DC/DC converter with a 1Amp internal switch. The low quiescent current of typical 300µA, makes AMS6104 attractive for battery operated applications. AMS6104 operates at switching frequencies of 500 kHz allowing for easy filtering and low noise. The reference voltage is set at 1.23V. Internally compensated and internal soft-start minimizes the number of external components necessary. It operates from 1.3V to 15V supply and it is thermally and over current protected. The AMS6104 is available in SOT23-5 leads package. ORDERING INFORMATION OUTPUT VOLTAGE Adjustable PIN CONNECTIONS PACKAGE TYPE TEMP. 5 Lead SOT-23 RANGE AMS6104M1 5L SOT-23 (M1) -25°C to 125°C TYPICAL APPLICATION Top View Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6104 PIN DESCRIPTION AMS6104 PIN NUMBERS NAME 1 FB 2 GND 3 SW 4 VCC 5 EN DESCRIPTION Feedback Input. Connect a resistive voltage divider from the output voltage to FB to set the output voltage. The feedback regulation threshold is 1.23V. Ground High side of the Switch transistor. The Low side of the Switch transistor is internally connected to GND Internal Power Input. VCC powers the internal circuitry. If the input source remains above 3.0V, VCC can be connected to the input source to reduce power consumption. Enable. A high voltage at EN turns on the converter, and a low voltage turns it off. When not used, connect EN to the input source for automatic startup. If EN is driven over 6V, place a 10 kΩ to 47kΩ resistor in series with EN. 3.3V to 5.0V application Advanced Monolithic Systems, Inc. www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6104 ABSOLUTE MAXIMUM RATINGS VCC SW All other pins VCC Supply Voltage Output Voltage -0.3V to 15V -0.5V to 20V -0.3V to 6V 1.3V to 15V VIN to 20V Operating Temperature Junction Temperature Solder Temperature Storage Temperature Thermal Resistance -20ºC to +105ºC 150ºC 230ºC -65ºC to 150 ºC 410ºC/W ELECTRICAL CHARACTERISTICS Electrical Characteristics at TA= 25 °C, VCC = VEN = 3.3V (unless otherwise noted) PARAMETER START-UP Operating Input Voltage Minimum Start-up Voltage ENABLE EN Threshold EN Hysteresis EN Input Bias Current EN Input Bias Current FEEDBACK COMPARATOR FB voltage FB Input Bias Current OUTPUT SWITCH SW On-Saturation voltage SW Current Limit SW Leakage Current Output Switch Rise Time Output Switch Fall Time Switching Frequency Maximum duty cycle DEVICE Efficiency Supply Current (Shutdown) Supply Current (Quiescent) Load Regulation Line Regulation Thermal Shutdown TEST CONDITIONS AMS6104 Typ. Max. 1.3 15 1.5 V V 1.2 40 5 15 2.0 V mV µA µA 1.19 -15 1.23 -10 1.27 V nA 0.9 330 1 500 1.5 10 424 20 8 475 mV A µA ns ns Khz % Min. 1.5 IOUT =25mA VEN Rising 1.1 VEN= 1.5V VEN= 3.3V VFB = 1.23V VCC = 5.0V VSW = 20V (inductor controlled) VOUT = 5.0V; IOUT =1mA to 500mA VEN = 0V, no F/B resistors VFB = 1.3V; IOUT =0mA VOUT = 5.0V; IOUT =1mA to 500mA IOUT =10mA ; VCC = 3.3V to 12V ISW=1A Advanced Monolithic Systems, Inc. www.advanced-monolithic.com 85 80 480 16 10 130 Phone (925) 443-0722 8 20 525 95 150 600 25 20 Units % nA µA mV mV ºC Fax (925) 443-0723 AMS6104 TYPICAL PERFORMANCE CHARACTERISTICS 3.3 to 5V efficiency Load Regulation 1.01 0.9 0.89 1.005 0.88 0.87 1 0.86 0.995 0.85 0.84 0.99 0.83 0.82 0.985 0.81 0.98 0.8 0 0.1 0.2 0.3 0.4 0.5 0 0.6 Efficiency VS Load for 5V output application achieving 0.5A 0.1 0.2 0.3 0.4 0.5 0.6 3.3V Input, 5V Output; normalized Load Regulation Efficiency Vs Supply for 100mA load Line regualtion @10mA 100 1.01 95 1.008 90 1.006 85 1.004 80 1.002 75 1 70 0.998 65 60 0.996 0 2 4 6 8 10 12 Efficiency VS Supply for 12V Output at 100mA load Load Transient 25-75% load 12V Output Advanced Monolithic Systems, Inc. 14 0 2 4 6 8 10 12 Light Load Line regulation (reverse load regulation) for 12V Output Normal Switching Waveform www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 14 AMS6104 TYPICAL PERFORMANCE CHARACTERISTICS (continued) Waveform close-up showing Rise time Full load (200mA) start-up 22µF Tantalum Capacitor 1mA load start-up – 3 X 1µF Ceramic output capacitor Advanced Monolithic Systems, Inc. Waveform close-up showing Fall time Minimal load (1mA) start-up – 22µF Tantalum Capacitor Full load (200mA) start-up 3 X 1µF Ceramic output capacitor www.advanced-monolithic.com Phone (925) 443-0722 Fax (925) 443-0723 AMS6104 PACKAGE DIMENSIONS inches (millimeters) unless otherwise noted. 5 LEAD SOT-23 PLASTIC PACKAGE (M1 0.110-0.120 (2.794-3.048) 0.102-0.118 (2.60-3.00) 0.059-0.070 (1.50-1.75) 0.014-0.020 (0.350-0.50) 0.037 (0.95) TYP 0.018-0.024 (0.457-0.610) 10° NOM 0.036-0.051 (0.090-1.30) 0.0035-0.0080 (0.090-0.20) 0.003 (0.150) MAX Advanced Monolithic Systems, Inc. 0.075 (1.90) TYP www.advanced-monolithic.com 10° NOM 0.018-0.024 (0.457-0.610) (SOT-23-5 ) AMS DRW# 051001 Phone (925) 443-0722 Fax (925) 443-0723