AMC8878/8879
BLOCK DIAGRAM
Reverse
Battery
Protection
V
IN
SHDN
Shutdown
And
Power-On
Control
Current
Limit
V
OUT
Thermal
Sensor
V
REF
GND
BP
PIN DESCRIPTION
Pin Number
AMC8878 AMC8879
1
5
2
2
3
4
5
1
3
4
Pin Name
V
IN
GND
SHDN
BP
V
OUT
Pin Function
Input
Ground
Logic control shutdown pin; HI: Device is ON, LO: Device is OFF
Noise bypass pin; The output noise level can be reduced to 30µV
RMS
by
connecting external capacitors
Output
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Input Voltage
V
IN
2.5
6.5
Load Current
I
O
5
150
Input Capacitor (V
IN
to GND)
1.0
Output Capacitor with ESR of 10Ω max., (V
OUT
to GND)
1.0
Units
V
mA
µF
µF
Note:
1. C
IN
: A 1.0
µF
capacitor (or larger) should be placed between V
IN
to GND.
2. C
OUT
: A 1.0
µF
(or larger) capacitor is recommended between V
OUT
and GND for stability and improving the regulator’s transient response. The
ESR (Effective Series Resistance.) of this capacitor has no effect on regulator stability, but low ESR capacitors improve high frequency transient
response. The value of this capacitor may be increased without limit, but values larger than 10uF tend to increase the settling time after a step
change in input voltage or output current. The part may oscillate without the capacitor. Any type of capacitor can be used, but not Aluminum
electrolytics when operating below -25
O
C, The capacitance may be increased without limit.
Copyright
©
2006 ADDtek Corp.
3
DD067_G --
JUNE 2006
ADDTEK [ ADDTEK CORP ]
