ML63S ML63S Series DC-DC Converter Application Features Power Source of Portable Products Palmtops Portable Cameras and Video Recorders Wireless mouse and keyboard Ordering Information Designator a b c d e ML63S Version ML63SA ML63SB ML63SC ML63SD ML63SE ML63SF Description Version Output Voltage eg. 30=3.0V Small number of external components: inductor, diode and capacitor. Ultra low input current : Typical 7 uA Output Voltage Accuracy : +/- 2.5 % Low ripple and noise Low startup voltage : Max 0.9V (with 1mA input) High Efficiency: Typical 85% Package Available: SOT- 89 (500mW), SOT-23 (150mW) & TO - 92 (300mW) General Description The ML63S is a group of PFM Step-up DC/DC converter IC with low supply current by CMOS process. 33=3.3V 50=5.0V Package Type P = SOT-89 M = SOT-23 T = TO-92 Device Orientation R = Embossed Tape (Orientation of Device : Right) L = Embossed Tape (Orientation of Device : Left) B = Bag (TO-92) It consists of an oscillator, a PFM control circuit, a Lx switch driver transistor, a reference voltage unit, an error amplifier for voltage detection and a Lx switch protection circuit. It is suitable for use with battery-powered instruments with low noise and low supply current. G = Lead Free Part Package Designator M P T M P T M P M P M P M P Package SOT23-3 SOT89-3 TO-92 SOT23-3 SOT89-3 TO-92 SOT23-5 SOT89-5 SOT23-5 SOT89-5 SOT23-5 SOT89-5 SOT23-5 SOT89-5 Switching Transistor CE Function VDD Pin FB Pin Features Build-in Transistor No No No Lx External Transistor No No No Ext Yes No No Lx+CE Yes No No Ext+CE No Yes No Lx+VDD No Yes Yes FB Build-in Transistor External Transistor Build-in Transistor Build-in Transistor P1/11 Rev. D, August 2011 ML63S Marking SOT23: ML63SA Series Part No. ML63SA30MRG ML63SA33MRG ML63SA36MRG ML63SA45MRG ML63SA50MRG Marking 7BXX 77XX 74XX 7KXX 70XX Description XX = Production Date Code e.g. B2 ML63SC Series Part No. ML63SC30MRG ML63SC33MRG ML63SC36MRG ML63SC45MRG ML63SC50MRG Marking 7EXX 7AXX 7HXX 7SXX 73XX Description XX = Production Date Code e.g. B2 SOT89: ML63SA and ML63SB Series Designator 1,2 3,4 5,6 Description Year Code e.g. 05 = Year 2005 Week Code e.g. 30 = Week 30 Output Voltage e.g. 30 = 3.0V P2/11 Rev. D, August 2011 ML63S ML63SA Pin Configuration Package Pin Number SOT23-3 SOT89-3 TO-92 1 1 1 3 2 2 2 3 3 Pin Name Function VSS VOUT LX Ground Output Voltage monitor, Internal IC Power Supply Switch Block Diagram Typical Applications P3/11 Rev. D, August 2011 ML63S ML63SB Pin Configuration Package Pin Number SOT23-3 SOT89-3 TO-92 1 1 1 3 2 2 2 3 3 Pin Name Function VSS VOUT EXT Ground Output Voltage monitor, Internal IC Power Supply External Switch Transistor Drive Block Diagram Typical Applications P4/11 Rev. D, August 2011 ML63S ML63SC Pin Configuration Package Pin Number SOT23-5 SOT89-5 4 5 2 2 5 4 1 3 3 1 Pin Name Function VSS VOUT Lx CE NC Ground Output Voltage monitor, Internal IC Power Supply Switch Chip Enable NC Block Diagram Typical Applications P5/11 Rev. D, August 2011 ML63S ML63SD Pin Configuration Package Pin Number SOT23-5 SOT89-5 4 5 2 2 5 4 1 3 3 1 Pin Name Function VSS VOUT EXT CE NC Ground Output Voltage monitor, Internal IC Power Supply External Switch Transistor Drive Chip Enable NC Block Diagram Typical Applications P6/11 Rev. D, August 2011 ML63S ML63SE Pin Configuration Package Pin Number SOT23-5 SOT89-5 4 5 2 2 5 4 1 3 3 1 Pin Name Function VSS VDD Lx VOUT NC Ground Power Supply Switch Output Voltage Monitor NC Block Diagram Typical Applications P7/11 Rev. D, August 2011 ML63S ML63SF Pin Configuration Package Pin Number SOT23-5 SOT89-5 4 5 2 2 5 4 1 3 3 1 Pin Name Function VSS VOUT Lx FB NC Ground Power Supply Switch Feedback NC Block Diagram Typical Applications P8/11 Rev. D, August 2011 ML63S Absolute Maximum Ratings Parameter Input Voltage VDD Input Voltage Lx Pin Voltage EXT Pin Voltage CE Pin Voltage Lx Pin Current EXT Pin Current SOT-89 Continuous TO-92 Total Power Dissipation SOT-23 Operating Ambient Temperature Storage Temperature Symbol VIN VDD VLX VEXT VCE ILX IEXT Ratings 6.5 6.5 6.5 -0.3 ~ VOUT + 0.3 -0.3 ~ VOUT + 0.3 600 + 30 500 Units V V V V V mA mA Pd 300 mW 150 Topr Tstg -25 ~ +85 o C -40 ~ +125 o C Electrical Characteristics VIN = VOUT * 0.6, VSS = 0V, IOUT = 10mA, Ta = 25 oC, unless otherwise specified. Parameter Symbol Output Voltage VOUT Input Voltage Startup Voltage Hold-on Voltage VIN VSTART VHOLD Supply Current 1 IDD1 Supply Current 2 Lx Switching Current Lx Leakage Current CE “High” Voltage CE “Low” Voltage CE “High” Current CE “Low” Current Oscillator Frequency Duty Cycle Efficiency IDD2 ILX Conditions IOUT = 1mA, VIN: 02V IOUT = 1mA, VIN: 20V No external component, VIN = VOUT * 0.95 VIN = VIN + 0.5V VLX = 0.4V, VIN = VOUT * 0.95 VIN =VLX=6.0V VIN = VOUT * 0.95 VIN = VOUT * 0.95 VOUT = 6.0V, VCE = 6.0V VOUT = 6.0V, VCE = 0.0V ILXLEAK VCEH VCEL ICEH ICEL FOSC MAXDTY EFF Min Typ Max Units Vout * Vout * Vout V 0.975 1.025 6.5 V 0.8 0.9 V 0.8 V 35 uA 7 150 uA mA uA V V uA uA KHz % % 0.5 0.9 0.3 0.5 0.5 -0.5 -0.5 100 78 85 Note : 1. Schottky diode: 1N5817 or 1N5819 (forward voltage drop : 0.2V) 2. Inductor : 47uH (ESR < 0.1) 3. Capacitor : Tantalum type, 47 uF P9/11 Rev. D, August 2011 ML63S Electrical Characteristics VIN = 1.6V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided. ML63SA27 VOUT = 2.7V Parameter Output Voltage Input Voltage Startup Voltage Hold-on Voltage Supply Current 1 Supply Current 2 Lx Switching Current Lx Leakage Current Oscillator Frequency Oscillator Duty Cycle Efficiency Symbol VOUT VIN VSTART VHOLD IDD1 IDD2 ILX ILXLEAK FOSC MAXDTY EFF Conditions Min 2.633 IOUT = 1mA IOUT = 1mA VIN = 2.57V VIN = 2.75V VLX=0.4V, VIN =2.57V VIN =6.0V, VLX =6.0V Typ 2.700 0.8 Max 2.767 6.5 0.9 0.8 35 7 100 0.5 100 78 85 Units V V V V uA uA mA uA KHz % % VIN = 1.8V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided. ML63SA30 VOUT = 3.0V Parameter Output Voltage Input Voltage Startup Voltage Hold-on Voltage Supply Current 1 Supply Current 2 Lx Switching Current Lx Leakage Current Oscillator Frequency Oscillator Duty Cycle Efficiency Symbol VOUT VIN VSTART VHOLD IDD1 IDD2 ILX ILXLEAK FOSC MAXDTY EFF Conditions Min 2.925 IOUT = 1mA IOUT = 1mA VIN = 2.85V VIN = 3.05V VLX=0.4V, VIN =2.85V VIN =6.0V, VLX =6.0V Typ 3.000 0.8 Max 3.075 6.5 0.9 0.8 35 7 150 0.5 100 78 85 Units V V V V uA uA mA uA KHz % % VIN = 2.0V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided. ML63SA33 VOUT = 3.3V Parameter Output Voltage Input Voltage Startup Voltage Hold-on Voltage Supply Current 1 Supply Current 2 Lx Switching Current Lx Leakage Current Oscillator Frequency Oscillator Duty Cycle Efficiency Symbol VOUT VIN VSTART VHOLD IDD1 IDD2 ILX ILXLEAK FOSC MAXDTY EFF Conditions Min 3.218 IOUT = 1mA IOUT = 1mA VIN = 3.135V VIN = 3.35V VLX=0.4V, VIN =3.135V VIN =6.0V, VLX =6.0V Typ 3.300 0.8 Max 3.383 6.5 0.9 0.8 35 7 180 0.5 100 78 85 Units V V V V uA uA mA uA KHz % % VIN = 3.0V, IOUT = 10mA, Ta = 25 oC, unless otherwise provided. ML63SA50 VOUT = 5.0V Parameter Output Voltage Input Voltage Startup Voltage Hold-on Voltage Supply Current 1 Supply Current 2 Lx Switching Current Lx Leakage Current Oscillator Frequency Oscillator Duty Cycle Efficiency Symbol VOUT VIN VSTART VHOLD IDD1 IDD2 ILX ILXLEAK FOSC MAXDTY EFF Conditions IOUT = 1mA IOUT = 1mA VIN = 4.75V VIN = 5.05V VLX=0.4V, VIN = 4.75V VIN =6.0V, VLX =6.0V Min 4.875 Typ 5.000 0.8 60 7 210 0.5 100 78 85 P10/11 Max 5.125 6.5 0.9 0.8 Units V V V V uA uA mA uA KHz % % Rev. D, August 2011 ML63S Application Notes 1. It is recommended to use capacitor with a capacity of 10uF or more for good frequency characteristics, otherwise it will lead to high output ripple. Tantalum type capacitor is recommended. As there may be the case where a spike-shaped high voltage is generated by the inductor when Lx transistor is turned off, the operating voltage of capacitor should be at least three times of the output set voltage so as to avoid over-voltage damage. 2. It is recommended to use inductor has sufficiently small d.c. resistance, large allowable current and hardly reaches magnetic saturation. When the inductance of inductor is small, there may be the case that the inductor current exceeds the absolute maximum ratings at the maximum load condition. 3. It is recommended to place external components as close as possible to the DC/DC converter so as to minimize the interconnection parasitic between components and DC/DC converter, especially for the capacitor connected to V OUT pin. It is recommended to place 0.1uF ceramic capacitor between VOUT pin and VSS pin. 4. It is recommended to provide sufficient grounding for VSS pin. This will help to stable the zero level within DC/DC converter induced by the switching current level variation during operation. And the insufficient grounding may result in unstable operation of DC/DC converter. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. P11/11 Rev. D, August 2011