TK11840

TK11840 DCDC Controller, 1ch, Step-up, Inductive DCDCコントローラ、1ch、、インダクティブ Feature „ Adjustable output voltage „ „ External Power Transistor „ パワートランジスタけ „ High speed adjustable OSC (Up to 1MHz) „ が (1MHz) „ Internal soft start circuit „ ソフトスタート „ Internal timer-latch type „ タイマーラッチ short circuit detection „ Totem-pole type output whose current is „ はトーテムポールでオン･オフ adjustable(correspond to NPN transistor) を (npnトランジスタ) „ On/Off control available „ スタンバイ „ Low Quiescent Current (5mA@no load) „ がない (5mA) „ Small 8 Pin SOT23L-8 package „ パッケージがさい (SOT23L-8) „ Operating Voltage Range VOP=1.8 to 10V „ Operating Temp Range TOP=-20 to +85°C „ Power Dissipation PD=400mW „ VOP=1.8~10V „ TOP=-20~+85°C „ PD=400mW Characteristics Part Name Number of DCDC TK11840 1ch fOSC Up to 1MHz Number of LED in serial connection 2 LED or more ILED.MAX Depends on external transistor Ordering Guide, Marking Part Name Ordering Name TK11840 TK11840LTL-GH Marking D40 Description Order Size TK11840: Part Name L: SOT23L-8 Package TL: Tape&Reel, Left -GH: PB-Free&Halogen Free 1,300 pcs. /Reel Page 118 2010 AUTUMN This datasheet has been downloaded from http://www.digchip.com at this page Block Diagram, Standard Application EaIn 1 Error Amplifier 0.5V SCP 2 Soft Start Short Circuit Protection VCC 3 BR/CTL 4 1.3V Reference Voltage Supply PWM Comparator Oscillator Output Drive Control Circuit 8 FB 7 OSC 6 GND 5 Out In VIn CIn 1 EaIn 2 SCP CSCP 3 VCC 4 BR/CTL ...