AMC8878/8879
BLOCK DIAGRAM
Reverse
Battery
VIN
Protection
SHDN
Shutdown
And
Current
Limit
Power-On
Control
VOUT
Thermal
Sensor
VREF
GND
BP
PIN DESCRIPTION
Pin Number
Pin Name Pin Function
AMC8878 AMC8879
1
2
3
5
2
1
VIN
Input
GND
Ground
Logic control shutdown pin; HI: Device is ON, LO: Device is OFF
SHDN
BP
Noise bypass pin; The output noise level can be reduced to 30µVRMS by
connecting external capacitors
Output
4
5
3
4
VOUT
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Units
Min.
2.5
Typ.
Max.
6.5
Input Voltage
Load Current
VIN
IO
V
mA
µF
µF
5
150
Input Capacitor (VIN to GND)
1.0
1.0
Output Capacitor with ESR of 10Ω max., (VOUT to GND)
Note:
1. CIN: A 1.0 µF capacitor (or larger) should be placed between VIN to GND.
2. COUT: A 1.0 µF (or larger) capacitor is recommended between VOUT 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 -25OC, The capacitance may be increased without limit.
Copyright © 2006 ADDtek Corp.
3
DD067_G -- JUNE 2006
ADDTEK [ ADDTEK CORP ]
