cat6218 Catalyst Semiconductor, cat6218 Datasheet

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cat6218

Manufacturer Part Number
cat6218
Description
300ma Cmos Ldo Regulator
Manufacturer
Catalyst Semiconductor
Datasheet

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300mA CMOS LDO Regulator
FEATURES
APPLICATIONS
For Ordering Information details, see page 9.
PIN CONFIGURATION
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Guaranteed 300mA output current
Low dropout voltage of 180mV typical at 300mA
Stable with 1μF ceramic output capacitor
External 10nF bypass capacitor for low noise
Quick-start feature
No-load ground current of 55μA typical
Full-load ground current of 80μA typical
±1.0% initial accuracy (V
±2.0% accuracy over temperature (V
“Zero” current shutdown mode
Fold-back current limit and under-voltage
lockout
Thermal protection
Thin SOT23-5 package
Cellular phones
Battery-powered devices
Consumer Electronics
GND
VIN
EN
TSOT-23 5-Lead
1
2
3
(1mm height)
Top View
OUT
5
4
≥ 2.0V)
VOUT
BYP
OUT
≥ 2.0V)
1
V
2.3V
to 5.5V
OFF ON
DESCRIPTION
The CAT6218 is a 300mA 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 150μs.
With zero shutdown current and low ground current of
55μA typical, the CAT6218 is ideal for battery-
operated devices with supply voltages from 2.3V to
5.5V. An internal under voltage lockout circuit disables
the output at supply voltages under 2.1V typical.
The CAT6218 offers 1% initial accuracy and low
dropout voltage, 180mV typical at 300mA. Stable
operation is provided with a small value ceramic
capacitor, reducing required board space and compo–
nent cost.
Other features include fold-back current current limit
and thermal protection.
The device is available in the low profile (1mm max
height) 5-lead thin SOT23 package.
TYPICAL APPLICATION CIRCUIT
IN
C
1µF
IN
EN
VIN
CAT6218
GND
VOUT
BYP
C
1µF
C
10nF
OUT
BYP
Doc. No. MD-10010 Rev. C
CAT6218
V
OUT
(Optional)

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cat6218 Summary of contents

Page 1

... Top View © Catalyst Semiconductor, Inc. Characteristics subject to change without notice DESCRIPTION The CAT6218 is a 300mA 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 150μ ...

Page 2

... Doc. No. MD-10010 Rev. C BLOCK DIAGRAM VIN Reference BYP Figure 2. CAT6218 Functional Block Diagram The capacitor should be located near the device. ESR domain is 5mΩ to 500mΩ mum guaranteed current of 300mA. For input-to- value can be output voltages higher than 1V, a continuous 300mA IN output current might turn-on the thermal protection. A 250Ω ...

Page 3

... C = 10nF BYP f = 20kHz 10nF BYP OUT C = 10nF BYP BW = 10Hz to 100kHz V = 2 2.3 to 5.5V, 0º +125ºC junction temperature V = 2 CAT6218 Min Typ Max Unit -1.0 +1.0 (4) ≥ 2.0V -2.0 +2.0 40 ppm/ºC ±0.1 -0.2 +0.2 -0.4 +0.4 0.7 1.2 1.5 180 250 300 ...

Page 4

... CAT6218 TYPICAL CHARACTERISTICS V = 3.85V 100μ OUT IN OUT Dropout Characteristics 3.0 100μA 2.5 2.0 300mA 1.5 1.0 0.5 0.0 0.0 1.0 2.0 3.0 4.0 INPUT VOLTAGE [V] Load Regulation 2.95 2.90 2.85 2.80 2. 100 150 200 250 300 OUTPUT LOAD CURRENT [mA] Ground Current vs. Load Current 100 100 125 150 OUTPUT LOAD CURRENT [mA] Doc ...

Page 5

... PSRR vs. Frequency (10mA Load 0.01 5 CAT6218 1.0 2.0 3.0 4.0 5.0 6.0 INPUT VOLTAGE [V] Dropout vs. Load Current 50 100 150 200 250 300 OUTPUT LOAD CURRENT [mA 10nF 0 100 FREQUENCY [kHz] Doc. No. MD-10010 Rev. C ...

Page 6

... CAT6218 TYPICAL CHARACTERISTICS V = 3.85V 100μ OUT IN OUT PSRR (30mA Load) 70 1kHz 100 200 300 VIN - VOUT [mV] Doc. No. MD-10010 Rev. C (shown for 2.85V output option) = 1μ 10nF 25°C unless otherwise specified. BYP 10kHz 50 40 ...

Page 7

... Line Transient Response (3.85V to 4.85V) © Catalyst Semiconductor, Inc. Characteristics subject to change without notice (shown for 2.85V output option) = 1μ 10nF 25°C unless otherwise specified. BYP A Enable Turn-Off (100μA Load) Enable Turn-Off (300mA Load) Load Transient Response (0.1mA to 300mA) 7 CAT6218 Doc. No. MD-10010 Rev. C ...

Page 8

... CAT6218 PACKAGE OUTLINE DRAWING (1)(2) 5-LEAD TSOT- TOP VIEW SIDE VIEW For current Tape and Reel information, download the PDF file from: http://www.catsemi.com/documents/tapeandreel.pdf. Notes: (1) All dimensions are in millimeters, angles in degrees. (2) Refer JEDEC MO-193. Doc. No. MD-10010 Rev. C SYMBOL ...

Page 9

... Notes: (1) All packages are RoHS-compliant (Lead-free, Halogen-free). (2) The standard finish is NiPdAu. (3) The device used in the above example is a CAT6218-180 TD-GT3 (V (4) Standard voltages are 1.8V, 2.4V, 2.7V, 3.0V, and 3.3V. For other voltage options, please contact your nearest Catalyst Semiconductor Sales office. (5) Top marking for CAT6218 is RU. ...

Page 10

... Catalyst Semiconductor products are not designed, intended, or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Catalyst Semiconductor product could create a situation where personal injury or death may occur. ...

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