AN1201SM

ICs for Telephone AN1201SM Polarity inverting charge pump DC/DC converter IC I Overview AN1201SM is a negative voltage generation IC for bias voltage of transmission power module of cellular phones. This IC is a polarity inverting DC/DC converter to change from positive voltage into negative voltage. 2.00±0.10 1.30±0.10 2.10±0.10 0.225±0.05 1.65±0.10 0.225±0.05 Unit: mm 1 0.65±0.05 0.65±0.05 5 0.20±0.05 0.8±0.10 I Features High power conversion efficiency: 89% typ. (when output current is 5 mA.) Low output resistance: 20 Ω typ. High voltage conversion efficiency: 99.9% Small (S-MINI) package 2 3 4 Cellular phones SMINI-5D Note) The package of this product will be changed to lead-free type (SMINI-5DA). See the new package dimensions section later of this datasheet. I Block Diagram C2 5 S2 GND 4 Marking Part No.: "AL" indicates AN1201SM. A L OSC S1 S3 Pin No.1 displayed 1 VIN 2 VOUT S4 3 C1 0 to 0.10 I Applications 0.15±0.05 Publication date: November 2001 SDE00001BEB 1 AN1201SM I Pin Descriptions Pin No. 1 2 3 4 5 Symbol VIN VOUT C1 GND C2 Supply voltage pin Inverted output pin Charge pump capacitor's positive polarity side connecting pin Ground pin Charge pump capacitor's negative polarity side connecting pin Description I Absolute Maximum Ratings Parameter Supply voltage Supply current Output current Power dissipation *2 *2 Symbol VIN IIN IO PD Topr Tstg *1 Rating 3.3 10 20 48 −30 to +85 −55 to +125 Unit V mA mA mW °C °C Operating am...