a
FEATURES
Low Dropout: 150 mV @ 200 mA
Low Dropout:
300 mV @ 300 mA
Low Power CMOS: 17 A Quiescent Current
Shutdown Mode: 0.2 A Quiescent Current
300 mA Output Current Guaranteed
Pin Compatible with MAX667
Stable with 10 F Load Capacitor
+2.5 V to +16.5 V Operating Range
Low Battery Detector
Fixed +5 V or Adjustable Output
High Accuracy: 2%
Dropout Detector Output
Low Thermal Resistance Package*
ESD > 6000 V
APPLICATIONS
Handheld Instruments
Cellular Telephones
Battery Operated Devices
Portable Equipment
Solar Powered Instruments
High Efficiency Linear Power Supplies
GENERAL DESCRIPTION
+5 V Fixed, Adjustable
Low-Dropout Linear Voltage Regulator
ADP3367*
FUNCTIONAL BLOCK DIAGRAM
IN
OUT
DD
ADP3367
SHDN
A1
SET
LBO
C2
LBI
GND
1.255V
REF
50mV
C1
TYPICAL OPERATING CIRCUIT
+6V
INPUT
+5V
OUTPUT
C1
10碌F
IN
+
OUT
+
ADP3367
SET GND SHDN
The ADP3367 is a low-dropout precision voltage regulator that
can supply up to 300 mA output current. It can be used to give
a fixed +5 V output with no additional external components or
can be adjusted from +1.3 V to +16 V using two external
resistors. Fixed or adjustable operation can be selected via the
SET input. The low quiescent current (17
碌A)
in conjunction
with the standby or shutdown mode (0.2
碌A)
makes this device
especially suitable for battery powered systems. The dropout
voltage when supplying 100
碌A
is only 15 mV allowing opera-
tion with minimal headroom thereby prolonging the useful bat-
tery life. At higher output current levels the dropout remains
low increasing to just 150 mV when supplying 200 mA. A wide
input voltage range from 2.5 V to 16.5 V is allowable. Addi-
tional features include a dropout detector and a low supply/bat-
tery monitoring comparator. The dropout detector can be used
to signal loss of regulation while the low battery detector can be
used to monitor the input supply voltage.
The ADP3367 is a much improved pin-compatible replacement
for the MAX667. Improvements include lower supply current,
tighter voltage accuracy and superior line and load regulation.
Improved ESD protection (>6000 V) is achieved by advanced
voltage clamping structures. The ADP3367 is specified over the
industrial temperature range 鈥?0掳C to +85掳C and is available in
narrow surface mount (SOIC) packages.
*Patent
pending.
400
T
A
= +50掳C
300
GUARANTEED 300mA
LOAD CURRENT 鈥?mA
200
ADP3367
DISSIPATION LIMIT
100
STANDARD
SO PACKAGE
DISSIPATION LIMIT
0
0
5
V
IN
鈥揤
OUT
鈥?V
10
15
Load Current vs. Input-Output Differential Voltage
ADI鈥檚 proprietary Thermal Coastline leadframe used in ADP3367AR
packaging, has 30% lower thermal resistance than the standard
leadframes. This improvement in heat flow rate results in lower
die temperature hence improves reliability.
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
漏 Analog Devices, Inc., 1995
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
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