ML63 Datasheet | Minilogic Device

Features l l l l l l l Small number of external ponents: inductor, diode and capacitor. Ultra low input current : Typical 0.6u A (at no load, 1.5V input) Oscillator : 100 k Hz, 180 k Hz ( + 15%) Low ripple and noise Low startup voltage : Max 0.9V (with 1m A input) High Efficiency: Typical 80% Package Available: SOT- 89 (500m W) & TO - 92 (300m W) v General Description The ML63 is a group of VFM Step-up DC/DC converter IC with ultra-low supply current by CMOS process. It consists of an oscillator, a VFM control circuit, a Lx switch driver transistor, a reference voltage unit, an error amplifier for voltage detection and an Lx switch protection circuit. It is suitable for use with battery-powered instruments with low noise and ultra low supply current. v Block Diagram Lx Lx SW VLX limiter Vref Buffer VFM control Vss OSC 100KHz/180KHz Error Amp. v Absolute Maximum Ratings Parameter Input Voltage Output Current Output Voltage Continuous Total Power Dissipation SOT-89 Pd TO-92 Topr Tstg 300 -30 ~ +80 -40 ~ +125 o Symbol VIN IOUT VOUT Ratings 8 500 VSS-0.3 ~VIN+0.3 500 Units V m A V m W C C Operating Ambient Temperature Storage Temperature o 1/5 .. ML63 v Electrical Characteristics VIN = 1.6V, IOUT = 10m A, Ta = 25 o C, unless otherwise provided. ML63271 / ML63271A VOUT=2.7V Parameter Output Voltage Startup Voltage Hold-on Voltage Oscillator Frequency Input Current 1 Input Current 2 Lx Switching Current Lx Leakage Current Oscillator Duty Cycle Efficiency Input Voltage Symbol VOUT VSTART VHOLD FOSC IIN1 IIN2 ILX ILXLEAK MAXDTY EFF VIN Conditions IOUT=1m A IOUT=1m A TYPE = ML63271A TYPE = ML63271 At no load VIN = 3.2V VLX=0.4V, VIN=2.55V VIN=3.5V, VLX=6.0V Measuring Lx Waveform Min 2.633 0.7 85 153 Typ 2.700 0.8 100 180 8 6 Max 2.767 0.9 115 207 12 Units V V V KHz KHz u A u A m A u A % % V 40 0.5 75 80 8 VIN = 1.8V, IOUT = 10m A, Ta = 25 o C, unless otherwise provided. ML63301 / ML63301A VOUT=3.0V Parameter Output Voltage Startup Voltage Hold-on Voltage Oscillator...