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PDF ADP3342ARM-REEL7 Data sheet ( Hoja de datos )
| Número de pieza | ADP3342ARM-REEL7 | |
| Descripción | Ultralow/ IQ/ anyCAP Low Dropout Regulator | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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FEATURES
Accuracy Over Line and Load: ؎4.0% @ 25؇C,
؎5% Over Temperature
Ultralow Dropout Voltage: 300 mV (Typ) @ 300 mA
Requires Only CO = 1.0 F for Stability
anyCAP = Stable with any Type of Capacitor
(including MLCC)
Current and Thermal Limiting
Low Shutdown Current: < 2 A
1.7 V Յ VIN Յ 6 V
2.8 V Յ VCC Յ 6 V
VOUT = 1.2 V ؎5%
–40؇C to +100؇C Ambient Temperature Range
Ultrasmall Thermally Enhanced 8-Lead MSOP Package
APPLICATIONS
Notebook PCs
Desktop PCs
Ultralow, IQ, anyCAP®
Low Dropout Regulator
ADP3342
FUNCTIONAL BLOCK DIAGRAM
IN
VCC
PWRGD
SD
Q1
THERMAL
PROTECTION
CC
DRIVER
gm
ADP3342
BANDGAP +
REF –
GND
OUT
GENERAL DESCRIPTION
The ADP3342 is a unique member of the ADP330x family of
precision low dropout anyCAP voltage regulators. The ADP3342
operates with an input voltage range of 1.7 V to 6 V and delivers
a continuous load current up to 300 mA. In order to support the
ability to regulate from such a low input voltage, the power rail
to the IC, VCC, has been split off from the main power rail, VIN,
from which the output is powered.
The ADP3342 stands out from the conventional LDOs with the
lowest thermal resistance of any MSOP-8 package and an enhanced
process that enables it to offer performance advantages beyond
its competition. Its patented design requires only a 1.0 µF output
capacitor for stability. This device is insensitive to output capacitor
Equivalent Series Resistance (ESR), and is stable with any good
quality capacitor, including ceramic (MLCC) types for space-
restricted applications. The dropout voltage of the ADP3342 is
only 190 mV (typical) at 300 mA. This device also includes a
safety current limit, thermal overload protection and a shutdown
control pin.
3.3V
VIN
1.8V
+
1F
ON
OFF
VCC
ADP3342
IN OUT
IN OUT
SD PWRGD
GND
VOUT
+ 1.2V
1F
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., 2002
1 page  
1.32
1.22
1.12
3.00
1.80
VCC = 3V
CL = 1F
RL = 4⍀
0 40 80 120 160 200
TIME – s
TPC 10. Line Transient Response
1.32
VCC = 3V
CL = 10F
RL = 4⍀
1.22
1.12
3.00
1.80
0 40 80 120 160 200
TIME – s
ADP3342
1.3
1.2
1.1
400
200
5
0
0
VCC = 3V
VIN = 1.8V
CL = 1F
400 800 1200 1600 2000
TIME – s
TPC 11. Line Transient Response
TPC 12. Load Transient Response
1.3
1.2
1.1
400
200
5
0
0
VCC = 3V
VIN = 1.8V
CL = 10F
400 800 1200 1600 2000
TIME – s
TPC 13. Load Transient Response
VIN = 1.8V
1.2
0
1.0
0.5
0
0
200 400 600 800 1000
TIME – s
TPC 14. Short Circuit Current
VCC = 3V
2.0 RL = 4⍀
1.0 VIN = 1.8V
0
3.0
0
1.8
0
–200 200 600 1000 1400 1800
TIME – s
TPC 15. Power-On/Power-Off
Response from Shutdown
2.0
1.0
0
3.0
0
1.8
0
0
VCC = 3V
VIN = 1.8V
RL = 4⍀
100 200
300 400
TIME – s
500
TPC 16. Turn On Delay
2.0
1.0
0
3.0
0
1.8
0
2
VCC = 3V
VIN = 1.8V
RL = 4⍀
6 10 14
TIME – s
18
TPC 17. Turn Off Delay
VIN = 1.8V
2.0 SD = 3.0V
1.0 RL = 4⍀
0
3.0
0
200
600 1000 1400
TIME – s
1800
TPC 18. Power-On/Power-Off
Response from VCC
REV. 0
–5–
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet ADP3342ARM-REEL7.PDF ] | |
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