DCDC Converter, 1ch, Step-up, Inductive DCDC1ch Feature 2.0MHz operation 2MHz Internal switching transistor Maximum duty cycle 90% 90 Very small inductor available Very small package SON3024-8 0.75mmSON3024-8 Operating Voltage Range VOP=2.65 to 16V VOP=2.65~16V TOP=-30~+85C Operating Temp. Range TOP=- 30to +85C Power Dissipation PD=600mW PD=600mW Characteristics Part Name TK11891 Number of Current Stabilizer - fOSC Number of LED in serial connection 2 to 4 LED 2.0MHz ILED Max 100mA Ordering Guide, Marking Part Name TK11891 Ordering Name Marking TK11891FTL-GH Description Order Size TK11891: Part Name 3,000 F: SON3024-8 Package pcs. TL: Tape&Reel, Left /Reel -GH: PB-Free&Halogen Free AA4 LOT Block Diagram, Standard Application L EN 4.7H PGND 1 Oscillator SW PWM Comp VIN 7 Vcc 0.6V 3 4.7F 3 OVP 6 VFB En PGND VIN SW GND VFB OVP EA.OUT 8 7 SBD 6 COUT 5 2.2F ILED EAOUT 4 5 0.5V 2010 AUTUMN 2 CIN 4 Over Current Detector GND 1 on/off VIN Output Drive Control 2 TK11891F 8 Reference Voltage Error Amp RLED 5.6 CEA 0.1F Page 131 12 DCDC Converter TK11891