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Número de pieza | CAT6218 | |
Descripción | 300mA CMOS LDO Regulator | |
Fabricantes | Catalyst Semiconductor | |
Logotipo | ||
Hay una vista previa y un enlace de descarga de CAT6218 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
No Preview Available ! 300mA CMOS LDO Regulator
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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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