
_______________General Desc ription
The MAX667 low-dropout, positive, linear voltage regu-
lator supplies up to 250mA of output current. With no
load, it has a typical quiescent current of 20μA. At
200mA of output current, the input/output voltage differ-
ential is typically 150mV. Other features include a low-
voltage detector to indicate power failure, as well as
early-warning and low-dropout detectors to indicate an
imminent loss of output voltage regulation. A shutdown
control disables the output and puts the circuit into a
low quiescent-current mode.
The MAX667 employs Dual Mode operation. One
mode uses internally trimmed feedback resistors to pro-
duce +5V. In the other mode, the output may be varied
from +1.3V to +16V by connecting two external resistors.
The MAX667 is a pin-compatible upgrade to the
MAX666 in most applications where the input voltages
are above +3.5V. Choose the MAX667 when high out-
put currents and/or low dropout voltages are desired,
as well as for improved performance at higher
temperatures.
________________________Applic ations
Battery-Powered Devices
Pagers and Radio Control Receivers
Portable Instruments
Solar-Powered Instruments
____________________________Features
o
350mV Max Dropout at 200mA
o
250mA Output Current
o
Normal Mode: 20μA Typ Quiescent Current
Shutdown Mode: 0.2μA Typ Quiescent Current
o
Low-Battery Detector
o
Fixed +5V (Min Component Count) or
Adjustable Output
o
+3.5V to +16.5V Input
o
Dropout Detector Output
o
10μF Output Capacitor
______________Ordering Information
+5V /Programmable Low-Dropout
Voltage Regulator
________________________________________________________________ Maxim Integrated Products
Call toll free 1-800-998-8800 for free samples or literature.
1
__________________Pin Configuration
__________Typic al Operating Circ uit
19-3894; Rev 3; 10/94
M
1
2
3
4
8
7
6
5
IN
LBO
SET
SHDN
GND
LBI
OUT
DD
MAX667
DIP/SO
TOP VIEW
MAX667
GND
SHDN
SET
OUT
+5V OUT
C1
10
μ
F
IN
+6.3V
BATTERY
PART
TEMP. RANGE
0°C to +70°C
0°C to +70°C
0°C to +70°C
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
PIN-PACKAGE
8 Plastic DIP
8 SO
Dice
*
8 Plastic DIP
8 SO
8 CERDIP
MAX667CPA
MAX667CSA
MAX667C/D
MAX667EPA
MAX667ESA
MAX667MJ A
*Contact factory for dice specifications.
TM
Dual Mode is a trademark of Maxim Integrated Products.