AMC DOC. #: AMC8878_D (LF)
AMC8878/8879
March 2004
LOW NOISE 150mA
LOW DROPOUT REGULATOR
RECOMMENDED OPERATING CONDITIONS
Recommended Operating Conditions
Parameter
Symbol
Min.
Typ.
Max.
Units
Input Voltage
VIN
2.5
6.5
V
Load Current
I
O
5
150
mA
Input Capacitor (VIN to GND)
1.0
µF
Output Capacitor with ESR of 10
Ω max., (VOUT to GND)
1.0
µF
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. The part may oscillate without the capacitor. Any
type of capacitor can be used, but not Aluminum electrolytics when operating below -25 OC, The capacitance may be increased without limit.
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, these specifications apply over the operating ambient temperature of 0
°C to +70 °C with
VIN = VOUT(NOMIAL) + 0.5V, and are for DC characteristics only. (Low duty cycle pulse testing techniques are used
which maintains junction and case temperatures equal to the ambient temperature.)
AMC8878/8879
Parameter
Symbol
Test Conditions
Min
Typ.
Max
Units
IOUT = 0mA, TA = +25
OC
-1.4
+1.4
Output Voltage Accuracy
∆VOUT
IOUT = 0 to 150mA
-3
+2
%
Maximum Output Current
IOUT
150
mA
Current Limit
ILIMIT
160
mA
IOUT = 0mA
1.6
10
Ground Pin Current
IQ
IOUT = 150mA
1.7
µA
IOUT = 1mA
1.1
IOUT = 50mA
50
120
Dropout Voltage
IOUT = 150mA
165
mV
Line Regulation
∆VOI
VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15
0
0.15
%/V
Load Regulation
∆VOL
IOUT = 0 to 120mA, COUT = 1µF
0.01
0.04 %/mA
COUT = 10µF
30
Output Voltage Noise
en
f = 10Hz - 100KHz,
CBP = 0.01µF
COUT = 100µF
20
µVRMS
Shutdown Input Threshold High
VSIH
VIN = 2.5V to 5.5V
2.0
V
Shutdown Input Threshold Low
VSIL
VIN = 2.5V to 5.5V
0.4
V
TA = +25
OC
0.01
1
Shutdown Supply Current
IQ(SHDN) VOUT = 0V
TA = +85
OC
0.2
µA
TA = +25
OC
0.01
100
Shutdown Input Bias Current
ISHDN
VSHDN = VIN
TA = +85
OC
0.5
nA
TA = +25
OC
6
Shutdown Exit Delay
tdelay
CBP = 0.1µF,
COUT = 1µF, No load TA = +85 OC
6
ms
Thermal Shutdown Temperature
TSHDN
+150
OC
Note:
1. Current limit is measured at constant junction temperature, using pulse ON time.
2. Dropout is measured at constant junction temperature, using pulse ON time, and criterion is VOUT inside target value ± 2 %.
3. Regulation is measured at constant junction temperature, using pulsed ON time.
Copyright
2002, ADD Microtech Corp.
4
www.addmtek.com
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