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PDF CAT6218 Data sheet ( Hoja de datos )
| Número de pieza | CAT6218 | |
| Descripción | 300mA CMOS LDO Regulator | |
| Fabricantes | Catalyst Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CAT6218 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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300mA CMOS LDO Regulator
www.DataSheet4U.com
CAT6218
FEATURES
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 (VOUT ≥ 2.0V)
±2.0% accuracy over temperature (VOUT ≥ 2.0V)
“Zero” current shutdown mode
Fold-back current limit and under-voltage
lockout
Thermal protection
Thin SOT23-5 package
APPLICATIONS
Cellular phones
Battery-powered devices
Consumer Electronics
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.
For Ordering Information details, see page 9.
PIN CONFIGURATION
TSOT-23 5-Lead
(1mm height)
VIN 1
GND 2
EN 3
5 VOUT
4 BYP
Top View
TYPICAL APPLICATION CIRCUIT
VIN
2.3V
to 5.5V
VIN
CIN
VOUT
1µF CAT6218
OFF ON
EN BYP
GND
VOUT
COUT
1µF
CBYP (Optional)
10nF
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-10010 Rev. C
1 page  
www.DataCShAeetT4U6.c2om18
TYPICAL CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100μA, CIN = COUT = 1μF, CBYP = 10nF, TA = 25°C unless otherwise specified.
Output Voltage vs. Load Current
3.0
Ground Current vs. Input Voltage
70
2.5 60
50
2.0
40
1.5
30
1.0 20
0.5 10
0.0
0 100 200 300 400 500 600 700
OUTPUT LOAD CURRENT [mA]
0
0.0
1.0 2.0 3.0 4.0 5.0
INPUT VOLTAGE [V]
6.0
Dropout vs. Temperature (300mA Load)
350
300
250
200
150
100
-40
-10 20 50 80 110 140
TEMPERATURE [°C]
Dropout vs. Load Current
300
250
200
150
100
50
0
0 50 100 150 200 250 300
OUTPUT LOAD CURRENT [mA]
Enable Threshold vs. Input Voltage
1.6
1.2
0.8
0.4
0.0
2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
INPUT VOLTAGE [V]
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
PSRR vs. Frequency (10mA Load)
80
70 CBYP = 10nF
60
50
40 CBYP = 0
30
20
10
0
0.01
0.1 1 10
FREQUENCY [kHz]
100
Doc. No. MD-10010 Rev. C
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet CAT6218.PDF ] | |
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