CM2838
300mA LOW ESR CMOS LDO WITH ENABLE
ELECTRICAL CHARACTERISTICS
TA = +25℃; unless otherwise noted
CM2838
Typ.
Parameter
Symbol
Test Conditions
Unit
Min.
Note 1
-1.5
Max.
7
Input Voltage
VIN
V
Output Voltage Accuracy
VOUT
IO = 1mA to 300mA
1.5
%
1.2V<VO(NOM) ≤2.0V
2.0V<VO(NOM) ≤2.5V
1300
400
300
IO = 300mA,
Dropout Voltage
VDROPOUT
mV
V
OUT=VO(NOM)-1.5%,
2.5V<VO(NOM)
Output Current
Current Limit
IO
ILIM
VOUT > 1.2V
300
300
mA
mA
μA
μA
%
VOUT > 1.2V
IO = 0mA
450
30
Quiescent Current
IQ
35
50
0.1
1
Ground Pin Current
Line Regulation
IGND
IO = 1mA to 300mA
IOUT=5mA, VIN=VOUT+1 to VOUT+2
IO=1mA to 300mA
30
REGLINE
REGLOAD
OTS
OTH
TC
-0.1
0.02
0.2
150
30
Load Regulation
%
℃
Over Temperature Shutdown
Over Temperature Hysteresis
VOUT Temperature Coefficient
℃
40
ppm/℃
f=1kHz
IO = 100mA
60
Power Supply Rejection
PSRR
PSRR
dB
dB
f=10kHz
50
CO=2.2μF ceramic
f=100kHz
40
f=1kHz
f=10kHz
75
IO = 100mA
Power Supply Rejection
Output Voltage Noise
CO=2.2μF ceramic
55
C
BYP=0.01μF
f=100kHz
CO=2.2μF
CO=100μF
CO=2.2μF
CO=100μF
30
f=10Hz to 100kHz
IO = 10mA, CBYP=0μF
f=10Hz to 100kHz
30
eN
eN
μVrms
μVrms
20
30
Output Voltage Noise
Shutdown Supply Current
EN Input Bias Current
IO = 10mA, CBYP=0.01μF
20
ISD
IEH
VIN=5.0V, VOUT=0V, VEN < VEL
2.0
3.0
0.1
3.0
VIN
0.4
μA
μA
μA
V
VEN=VIN, VIN=2.6V to 7V
VEN=0, VIN=2.6V to 7V
VIN=2.6V to 7V
IEL
2.0
VEH
VEL
2
0
EN Input Threshold
VIN=2.6V to 7V
V
Note 1. VIN(MIN) = VOUT + VDROPOUT
2006/10/11 Rev. 1.3
Champion Microelectronic Corporation
Page 4
CHAMP [ CHAMPION MICROELECTRONIC CORP. ]
