ADM663A AD [Analog Devices], ADM663A Datasheet - Page 3

• Manufacturer Part Number: ADM663A
• Description: Tri-Mode: +3.3 V, +5 V, Adjustable Micropower Linear Voltage Regulators
• Manufacturer: AD [Analog Devices]

REV. 0
Mnemonic
V
V
SENSE
GND
LBI
LBO
SHDN
V
V
Model
ADM663AAN
ADM663AAR
ADM666AAN
ADM666AAR
OUT(1) (2)
IN
SET
TC
Function
Voltage Regulator Output(s).
Voltage Regulator Input.
Current Limit Sense Input. (Referenced to
V
V
Ground Pin. Must be connected to 0 V.
Low Battery Detect Input. Compared with 1.3 V.
Low Battery Detect Output. Open Drain Output.
Digital Input. May be used to disable the device
so that the power consumption is minimized.
Voltage Setting Input. Connect to GND for
+5 V output, to V
connect to external resistive divider for
adjustable output.
Temperature-Proportional Voltage for negative
TC Output.
PIN FUNCTION DESCRIPTION
OUT(2).
OUT(2).
SENSE
SENSE
V
V
PIN CONFIGURATIONS
V
OUT2
OUT1
GND
GND
OUT
LBI
ORDERING GUIDE
) If not used, it should be connected to
1
2
3
4
1
2
3
4
Temperature
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
–40 C to +85 C
Range
DIP & SOIC
DIP & SOIC
(Not to Scale)
(Not to Scale)
ADM663A
ADM666A
TOP VIEW
TOP VIEW
IN
for +3.3 V output or
8
7
5
8
7
5
6
6
V
V
V
SHDN
V
LBO
V
SHDN
IN
TC
SET
IN
SET
Package
N-8
R-8
N-8
R-8
Option
–3–
TERMINOLOGY
Dropout Voltage: The input/output voltage differential at
which the regulator no longer maintains regulation against fur-
ther reductions in input voltage. It is measured when the output
decreases 100 mV from its nominal value. The nominal value is
the measured value with V
Line Regulation: The change in output voltage as a result of
a change in the input voltage. It is specified as a percentage
change in output voltage for an input voltage change.
Load Regulation: The change in output voltage for a change
in output current.
Quiescent Current: The input bias current which flows when
the regulator output is unloaded or when the regulator is in
shutdown.
Sense Input Threshold: Current limit sense voltage. This
is the voltage (referenced to V
occurs.
Input-Output Saturation Resistance (ADM663A): This is a
measure of the internal MOS transistor effective resistance in se-
ries with V
at low currents may be calculated by multiplying the load cur-
rent by the saturation resistance.
Thermal Limiting: This feature monitors the internal die tem-
perature and disables the output when an internal temperature
of 125 C is reached.
Maximum Power Dissipation: The maximum total device
dissipation for which the regulator will continue to operate
within specifications.
OUT1
. The minimum input-output voltage differential
Line Reg
Load Reg ( )
IN
ADM663A/ADM666A
= V
OUT(2)
V
V
OUT
OUT
OUT
) at which current limiting
V
+2 V.
V
IN
I
(100)
OUT
OUT