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PDF CAT6219 Data sheet ( Hoja de datos )
| Número de pieza | CAT6219 | |
| Descripción | 500mA CMOS LDO Regulator | |
| Fabricantes | Catalyst Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CAT6219 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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500mA CMOS LDO Regulator
www.DataSheet4U.com
CAT6219
FEATURES
Guaranteed 500mA peak output current
Low dropout voltage of 300mV typical at 500mA
Stable with ceramic output capacitor
External 10nF bypass capacitor for low noise
Quick-start feature
Under voltage lockout
No-load ground current of 55µA typical
Full-load ground current of 85µA typical
±1.0% initial accuracy (VOUT ≥ 2.0V)
±2.0% accuracy over temperature (VOUT ≥ 2.0V)
“Zero” current shutdown mode
Current limit and thermal protection
5-lead TSOT-23 and 6-pad TDFN packages
APPLICATIONS
Cellular phones
Battery-powered devices
Consumer Electronics
DESCRIPTION
The CAT6219 is a 500mA 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 CAT6219 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 2.15V typical.
The CAT6219 offers 1% initial accuracy and low
dropout voltage, 300mV typical at 500mA. Stable
operation is provided with a small value ceramic
capacitor, reducing required board space and compo-
nent cost.
Other features include current limit and thermal
protection.
The LDO is available in fixed and adjustable output in
the low profile (1mm max height) 5-lead TSOT23 and in
the 6-pad 2mm x 2mm TDFN packages.
For Ordering Information details, see page 9.
PIN CONFIGURATION
TYPICAL APPLICATION CIRCUIT
5-Lead TSOT-23
(1mm height)
6-Pad TDFN
(2mm x 2mm)
VIN 1
GND 2
EN 3
5 VOUT
CAT6219
4 BYP/ADJ
EN 1
GND 2
VIN 3
6 BYP/ADJ
5 NC
4 VOUT
Top View
Top View
VIN
2.3V
to 5.5V
VIN
CIN
VOUT
1µF CAT6219
OFF ON
EN BYP
GND
VOUT
COUT
2.2µF
CBYP (Optional)
10nF
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. MD-10009 Rev. D
1 page  
www.DataCShAeetT4U6.c2om19
TYPICAL CHARACTERISTICS (shown for 2.85V output option)
VIN = 3.85V, IOUT = 100μA, CIN = 1µF, COUT = 2.2μF, CBYP = 10nF, TA = 25°C unless otherwise specified.
Output Short-circuit Current vs. Input Voltage
1000
900
800
700
600
500
400
300
200
100
0
0
VOUT = 0
1234
INPUT VOLTAGE (V)
5
Ground Current vs. Input Voltage
70
60
50
40
30
20
10
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Dropout vs. Temperature (500mA Load)
500
450
400
350
300
250
200
-40 -20
0 20 40 60 80 100 120 140
TEMPERATURE (°C)
Enable Threshold vs. Input Voltage
1.6
1.2
0.8
0.4
0
2 2.5 3 3.5 4 4.5 5 5.5
INPUT VOLTAGE (V)
Dropout vs. Load Current
400
350
300
250
200
150
100
50
0
0 50 100 150 200 250 300 350 400 450 500
OUTPUT LOAD CURRENT (mA)
PSRR vs. Frequency (10mA Load)
80
70 CBYP = 10nF
60
50 CBYP = 0
40
30
20
10
0
1.0E+01
1.0E+02 1.0E+03 1.0E+04
FREQUENCY [Hz]
1.0E+05
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. MD-10009 Rev. D
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet CAT6219.PDF ] | |
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