meeting your needs product information note that the contents are subject to change or discontinuation without notice. when placing orders, please confirm specificati ons and delivery condition in writing. ? toko, inc. feb.2002 rev.1 negative ldo regulator ic with on/off control tk721xxm description the tk721xxm is a negative output low dropout linear regulator with on/off control, which can supply 150ma load current. the output voltage, trimmed with high accuracy, is available from -2.0 to -7.0v in 0.1v steps. features ? high voltage accuracy 2.0% or 60mv ? very low dropout voltage: vdrop=220mv at i out =60ma ? active low on/off control ? excellent ripple rejection ratio: -55db at 400hz ? very low noise with noise bypass pin ? short circuit protection (over current protection) ? thermal shutdown (over heat protection) ? reverse bias protection applications ? battery powered systems ? mobile communication systems: cordless phone, gsm, phs, pdc, cdma, base station of mobile phones etc. ? industrial equipment: personal computer, barcode reader etc. ? measurement system etc. electrical characteristics parameter symbol value (typ) unit operating voltage range v op -2.8~-12.5 v operating temp. range t op -30~+80 c dropout voltage vdrop 220@iout=60ma mv output current iout 150 ma maximum output current iout max 230 ma supply current i cc 250.0 a standby current istandby 20.0 a control current icont 6.0 a ~0.3: vout on control voltage vcont 1.5~: vout off v package outline ? sot23l-6 5-0.32 1.2 0.15 (0.3) 3.3 2.2 0.4 13 4 6 0~0.1 1.4max 0.2 0.3 0.1 0.2 0.4 0.1 0.1 +0.10 ? 0.05 +0.10 ? 0.05 0.95 +0.10 ? 0.05 15max m 0.95 0.1 m unit : mm 0.2 3.4 block diagram bandgap referene sw circuit over heat & over current protection vee gnd vout np on/off cont
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