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
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Applications- Cellular phones
- Battery powered devices
- Consumer electronics
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Data Sheets (1)
| Document Title | Document ID/Size | Revision | Revision Date |
|---|
| LDO, 300 mA | CAT6218/D (152.0kB) | 5 | |
Package Drawings (1)
Order Information
| Product | Status | Compliance | Package | MSL* | Container | Budgetary Price/Unit |
|---|
| CAT6218-180TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT6218-240TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT6218-250TDGT3 | Active | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | $0.32 |
| CAT6218-270TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT6218-285TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT6218-300TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT6218-320TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
| CAT6218-330TDGT3 | Last Shipments | Pb-free
Halide free | TSOT-23-5 | 419AE | 1 | Tape and Reel | 3000 | |
Specifications
| Product | Output | Polarity | VO (V) | IO Typ (A) | VI Max (V) | VDO Typ (V) | Iq Typ (mA) | PSRR (dB) | Noise (µVrms) |
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| CAT6218-250TDGT3 | Single | Positive | 2.5 | 0.3 | 5.5 | 0.18 | 0.08 | 64 | 45 |
