99W028A Variable output, negative voltage IC BD6111FV Description Dimension(Units:mm) The BD6111FV is a charge-pump, negative supply IC containing a regulator. The charge pump block inverts a positive power supply voltage that is inputted to VBAT pin into a negative voltage and outputs it from the NEGOUT pin. The regulator block stabilizes this negative voltage with low-noise and outputs it from OUT pin. Output voltage values of this regulator can be controlled by voltage value inputted to VIN pin and determined by OUT=-1.6 VIN . SSOP-B8 Features 1) Highly efficient, built-in inverting charge pump 2) Built-in variable, negative voltage linear regulator. 3) Built-in stand-by switch circuit (pull down resistor 1M ) 4) Compact SSOP-B8 package Applications Compact information computer terminal, such as PDC, PHS and PDA. Battery driving apparatus requiring negative voltage. Absolute Maximum Ratings (Ta=25C) Parameter Maximum applied power supply voltage Symbol VBAT Maximum applied input voltage VIN Power dissipation Pd Limits -0.3 ~ +6.0 -0.3 ~ +6.0 Unit mW C Operating temperature range Topr 300 * -20 ~ +70 Storage temperature Tstg -55 ~ +125 V V C *Derating:3.0mW/C for operation above Ta=25C. December, 1999 Recommended Operating Conditions (Ta=25C) Parameter Power supply voltage Symbol Min. VBAT 2.5 Typ. - Max. Unit 5.5 V Electrical characteristics (Unless otherwise noted: Ta=25C, VBAT=3.6V, STBY=3.6V) Parameter Symbol Min. Typ. Max. Unit Circuit current IQ1 - 0.6 Conditions 3 mA No-load, VIN=1.25V Stand-by current IQ2 - - 5 A No-load, VIN=0V, STBY=0V Vo -2.1 -2.0 -1.9 V VIN=1.25V, IOUT=10mA dBV VIN=1.25V, IOUT=10mA <Regulator block> Output voltage Output ripple voltage Maximum output current VRR - -70 -60 IoMAX 20 - - mA VIN=1.25V, VOUT 40 mV VIN=1.25V, Io=0~10mA Load stability VOL Input stability VOI - 2 5 40 mV VIN pin inflow current IIN - 0 2 A fosc - 120 - kHz 1.6 M - V 0.3 V Vo+0.1V VIN=1.25V <Charge pump block> Oscillation frequency Voltage conversion efficiency VCE - 97 Stand-by pin pull down resistor Stand-by pin Operation Control voltage Non-operation RSTBY 0.6 1.0 - VIH 2.0 VIL -0.3 - % No-load, NEGOUT monitor Application circuit C+ VBAT 8 1 C1 CHARGE PUMP GND C4 1 STBY 2 1 7 1M C- 6 3 OUT C3 1.6M 1 NEGOUT C2 1 4 + - 1M + BD6111FV 5 VIN Appendix Notes No technical content pages of this document may be reproduced in any form or transmitted by any means without prior permission of ROHM CO.,LTD. The contents described herein are subject to change without notice. The specifications for the product described in this document are for reference only. Upon actual use, therefore, please request that specifications to be separately delivered. Application circuit diagrams and circuit constants contained herein are shown as examples of standard use and operation. Please pay careful attention to the peripheral conditions when designing circuits and deciding upon circuit constants in the set. Any data, including, but not limited to application circuit diagrams information, described herein are intended only as illustrations of such devices and not as the specifications for such devices. ROHM CO.,LTD. disclaims any warranty that any use of such devices shall be free from infringement of any third party's intellectual property rights or other proprietary rights, and further, assumes no liability of whatsoever nature in the event of any such infringement, or arising from or connected with or related to the use of such devices. Upon the sale of any such devices, other than for buyer's right to use such devices itself, resell or otherwise dispose of the same, no express or implied right or license to practice or commercially exploit any intellectual property rights or other proprietary rights owned or controlled by ROHM CO., LTD. is granted to any such buyer. Products listed in this document use silicon as a basic material. Products listed in this document are no antiradiation design. The products listed in this document are designed to be used with ordinary electronic equipment or devices (such as audio visual equipment, office-automation equipment, communications devices, electrical appliances and electronic toys). Should you intend to use these products with equipment or devices which require an extremely high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), please be sure to consult with our sales representative in advance. About Export Control Order in Japan Products described herein are the objects of controlled goods in Annex 1 (Item 16) of Export Trade Control Order in Japan. In case of export from Japan, please confirm if it applies to "objective" criteria or an "informed" (by MITI clause) on the basis of "catch all controls for Non-Proliferation of Weapons of Mass Destruction. Appendix1-Rev1.0