LDO Regulator, 300 mA, with Quick Start

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Overview

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.

  • Cellular phones
  • Battery powered devices
  • Consumer electronics
  • 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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Status

ECAD Models

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Output

Polarity

VO (V)

IO Typ (A)

VI Min (V)

VI Max (V)

VDO Typ (V)

Iq Typ (mA)

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Pricing ($/Unit)

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CAT6218-250TDGT3

Last Shipments

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

2.5

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-180TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

1.8

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-320TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

3.2

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-300TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

3

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-270TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

2.7

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-330TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

3.3

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-240TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

2.4

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

CAT6218-285TDGT3

Obsolete

Pb

A

H

P

TSOT-23-5

1

260

REEL

3000

N

Single

Positive

2.85

0.3

2.3

5.5

0.18

0.08

64

45

Yes

No

-

Price N/A

More Details

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