CAT6218: 300 mA LDO Regulator

The CAT6218 is a 300 mA CMOS low dropout regulator that provides fast response time during load current and line voltage changes. The quick-start feature allows the use of an external bypass capacitor to reduce the overall output noise without affecting the turn-on time of just 150 µs. With zero shutdown current and low ground current of 55 µA typical, the CAT6218 is ideal for battery-operated devices with supply voltages from 2.3 V to 5.5 V. An internal under voltage lockout circuit disables the output at supply voltages under 2.1 V typical. The CAT6218 offers 1% initial accuracy and low dropout voltage, 180 mV typical at 300 mA. Stable operation is provided with a small value ceramic capacitor, reducing required board space and component cost. Other features include fold-back current current limit and thermal protection. The device is available in the low profile (1 mm max height) 5-lead thin SOT23 package.

Features
  • Guaranteed 300 mA output current
  • Low dropout voltage of 180 mV typical at 300 mA
  • Stable with 1 µF ceramic output capacitor
  • External 10 nF bypass capacitor for low noise
  • Quick-start feature
  • No-load ground current of 55 µA typical
  • Full-load ground current of 80 µA typical
  • ±1.0% initial accuracy (VOUT ≥ 2.0V)
  • ±2.0% accuracy over temperature (VOUT ≥ 2.0V)
  • “Zero” current shutdown mode
  • Fold-back current limit and undervoltage lockout
  • Thermal protection
  • Thin SOT23-5 package
Applications
  • Cellular phones
  • Battery powered devices
  • Consumer electronics
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
LDO, 300 mACAT6218/D (152.0kB)5
Package Drawings (1)
Document TitleDocument ID/SizeRevision
TSOT-23. 5 Lead419AE (54.4kB)revo
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
CAT6218-180TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT6218-240TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT6218-250TDGT3ActivePb-free Halide freeTSOT-23-5419AE1Tape and Reel3000$0.32
CAT6218-270TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT6218-285TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT6218-300TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT6218-320TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
CAT6218-330TDGT3Last ShipmentsPb-free Halide freeTSOT-23-5419AE1Tape and Reel3000
Specifications
ProductOutputPolarityVO (V)IO Typ (A)VI Max (V)VDO Typ (V)Iq Typ (mA)PSRR (dB)Noise (µVrms)
CAT6218-250TDGT3SinglePositive2.50.35.50.180.086445
LDO, 300 mA (152.0kB) CAT6218
TSOT-23. 5 Lead CAT24C16