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PDF ADP3333 Data sheet ( Hoja de datos )
| Número de pieza | ADP3333 | |
| Descripción | High Accuracy Ultralow IQ/ 300 mA/ anyCAP Low Dropout Regulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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a
High Accuracy Ultralow IQ, 300 mA,
anyCAP® Low Dropout Regulator
ADP3333
FEATURES
High Accuracy Over Line and Load: ؎0.8% @ 25؇C,
؎1.8% Over Temperature
Ultralow Dropout Voltage: 230 mV (Max) @ 300 mA
Requires Only CO = 1.0 F for Stability
anyCAP = Stable with Any Type of Capacitor
(Including MLCC)
Current and Thermal Limiting
Low Noise
Low Shutdown Current: < 1 A
2.6 V to 12 V Supply Range
–40؇C to +85؇C Ambient Temperature Range
Ultrasmall 8-Lead MSOP Package
APPLICATIONS
Cellular Phones
PCMCIA Cards
Personal Digital Assistants (PDAs)
DSP/ASIC Supplies
FUNCTIONAL BLOCK DIAGRAM
IN Q1
OUT
THERMAL
PROTECTION
ADP3333 R1
CC
DRIVER
gm
SD R2
BANDGAP
REF
GND
GENERAL DESCRIPTION
ADP3333 is a member of the ADP333x family of precision low
dropout anyCAP voltage regulators. Pin-compatible with the
MAX8860, the ADP3333 operates with a wider input voltage
range of 2.6 V to 12 V and delivers a load current up to 300 mA.
ADP3333 stands out from other conventional LDOs with a
novel architecture and an enhanced process that enables it to
offer performance advantages over its competition. Its patented
design requires only a 1.0 µF output capacitor for stability. This
device is insensitive to output capacitor Equivalent Series Resis-
tance (ESR), and is stable with any good quality capacitor,
including ceramic (MLCC) types for space-restricted applica-
tions. ADP3333 achieves exceptional accuracy of ± 0.8% at
room temperature and ± 1.8% over temperature, line and load
variations. The dropout voltage of ADP3333 is only 140 mV
(typical) at 300 mA. This device also includes a safety current
limit, thermal overload protection and a shutdown feature. In
shutdown mode, the ground current is reduced to less than
1 µA. The ADP3333 has ultralow quiescent current, 70 µA (typ)
in light load situations.
VIN
CIN
1F
ADP3333
NC
IN
OUT
SD GND
VOUT
COUT
1F
OFF
ON
NC = NO CONNECT
Figure 1. Typical Application Circuit
anyCAP is a registered trademark of Analog Devices, Inc.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001
1 page  
2.52
2.51
2.50
2.49
VOUT = 2.5V
RL = 8.3⍀
CL = 1F
3.50
3.00
40 80 140 180
TIME – s
TPC 10. Line Transient Response
2.52
2.51
2.50
2.49
VOUT = 2.5V
RL = 8.3⍀
CL = 10F
3.50
3.00
40 80 140 180
TIME – s
TPC 11. Line Transient Response
ADP3333
VIN = 4V
2.7 VOUT = 2.5V
2.6 CL = 1F
2.5
2.4
300
10
200 400 600 800
TIME – s
TPC 12. Load Transient Response
2.7
VIN = 4V
VOUT = 2.5V
2.6 CL = 10F
2.5
2.4
300
10
200 400
600
TIME – s
800
TPC 13. Load Transient Response
–20
VOUT = 2.2V
–30
CL = 1F
–40 IL = 500mA
CL = 10F
IL = 500mA
–50
CL = 1F
IL = 50A
–60
–70
–80
CL = 10F
IL = 50A
–90
10 100 1k 10k 100k 1M 10M
FREQUENCY – Hz
TPC 16. Power Supply Ripple
Rejection
2.5
0
3
2 VIN = 6V
1
0
VIN = 6V
200 400
600
TIME – s
800
TPC 14. Short Circuit Current
120
100
80
60
40
0mA
300mA
20
0
0 10 20 30 40 50
CL – F
TPC 17. RMS Noise vs. CL
(10 Hz–100 kHz)
3 1F
2
1
0
10F
2
0
10F
1F
VIN = 6V
VOUT = 2.5V
RL = 8.3⍀
200 400 600
TIME – s
800
TPC 15. Turn ON-Turn OFF
Response
100
VOUT = 2.5V
IL = 1mA
10 CL = 10F
CL = 1F
1
0.1
0.01
0.001
10
100 1k 10k 100k
FREQUENCY – Hz
1M
TPC 18. Output Noise Density
REV. 0
–5–
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ADP3333.PDF ] | |
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