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AMC8877-3.2DBT Datasheet(PDF) 4 Page - List of Unclassifed Manufacturers

No. de pieza AMC8877-3.2DBT
Descripción Electrónicos  LOW NOISE 300mA LOW DROPOUT REGULATOR
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AMC DOC. #: AMC8877_A (LF)
AMC8877
Jun 2004
LOW NOISE 300mA
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
300
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 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 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.)
AMC8877
Parameter
Symbol
Test Conditions
Min
Typ.
Max
Units
IOUT = 10mA, TA = +25
OC
-1.4
+1.4
Output Voltage Accuracy
∆VOUT
IOUT = 10 to 300mA
-3
+2
%
Maximum Output Current
IOUT
300
mA
Current Limit
ILIMIT
330
mA
IOUT = 10mA
1.6
9
Ground Pin Current
IQ
IOUT = 300mA
1.7
9
µA
IOUT = 50mA
50
120
IOUT = 150mA
165
300
Dropout Voltage
VDROP
IOUT = 300mA
450
650
mV
Line Regulation
∆VOI
VIN = (VOUT + 0.1V) to 6.5V, IOUT = 1mA -0.15
0
0.15
%/V
Load Regulation
∆VOL
IOUT = 10 to 300mA, COUT = 10µF
40
80
mV
Ripple Rejection
PSRR
f=100Hz, IL=100uA
50
dB
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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