00W148A Programmable negative supply IC BD6112FVM Description Dimension (Units : mm) BD6112FVM is a charge-pump negative supply IC with a built-in regulator. The charge-pump block inverts the positive supply voltage in the VBAT pin into a negative voltage, which generates from the NEGOUT pin. The regulator block stabilizes this negative voltage with low-noise that produces from the OUT pin. Output voltage values of this regulator can be controlled by voltage value inputted to the VIN pin and determined by OUT=--1.6 x VIN. 0.290.15 0.60.2 2.90.1 2.80.1 4.00.2 8 7 6 5 0.9Max. 0.750.05 0.080.05 0.475 1 2 3 4 0.145 +0.05 -0.03 0.22 +0.05 -0.04 0.65 0.08 M 0.08 S MSOP8 Features 1) Built-in high efficiency, inverting charge-pump 2) Built-in negative voltage regulator (low noise, output voltage variable) 3) Built-in standby SW (pull down resistance 1M) 4) Ultra small MSOP8 package Applications Small terminal devics such as cellular phones, PHS, and PDA etc. Other equipments driven by battery required for negative voltage. Absolute Maximum Ratings (Ta=25C) Parameter Limits Symbol VBAT -0.3 ~ +6.0 Maximum applied input voltage VIN -0.3 ~ +6.0 Power dissipation Pd Maximum applied supply voltage 350 * Unit V V mW Operating temperature range Topr -30 ~ +85 C Storage temperature range Tstg -55 ~ +125 C *Derating : 3.5mW/C for operation above Ta=25C February, 2001 Recommended Operating Conditions (Ta=25C) Parameter Power supply voltage Symbol Min. Typ. Max. Unit VBAT 2.5 3.6 5.5 V Electrical characteristics (Unless otherwise noted; Ta=25C, VBAT=3.6V, STBY=3.6V) Symbol Min. Typ. Max. Unit Circuit current Parameter IQ1 - 0.5 3 mA No load, VIN=1.25V Conditions Stand-by current IQ2 - - 5 A No load, VIN=0V, STBY=0V VIN=1.25V, IOUT=5mA <Regulator block> Output voltage 1 Vo -2.1 -2.0 -1.9 V Output voltage 2 Output ripple voltage Vo2 VRR Vo x 0.95 - Vo -70 Vo x 1.05 -60 V dBV VIN=0.5~1.8V, Vo=-1.6 x VIN,IOUT=5mA VIN=1.25V, IOUT=5mA IOMAX 10 - - mA VIN=1.25V, VOUTVo+0.1V Load regulation VOL - 2 40 mV VIN=1.25V, Io=0~5mA Line regulation VOI - 10 40 mV VBAT=3.0~6.0V, Io=5mA IIN - 0 2 A VIN=1.25V Oscillation frequency fosc - 120 - kHz Voltage conversion efficiency VCE - 97 - % 0.6 1.0 1.6 M 2.0 - - V -0.3 - 0.3 V Maximum output current VIN pin inflow current <Charge-pump block> Stand-by pin pull down resistance RSTBY Operating VIH Stand-by pin control voltage Non-operating VIL No load, NEGOUT monitor Application Circuit C+ 1 8 + GND + C4 1 CHARGE PUMP C1 VBAT 2 7 STBY 1 1M C- 3 6 OUT 1 1.6M NEGOUT C2 1 + 4 + - + 1M BD6112FVM 5 VIN + C3