CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
4.
θ
JA
is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
5. For
θ
JC
, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications
Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature
range of the device as follows:
T
A
= -40°C to +85°C; V
IN
= (V
O
+ 1.0V) to 6.5V with a minimum V
IN
of 2.3V; C
IN
= 1µF; C
O
= 1µF;
C
BYP
= 0.01µF:
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7)
UNITS
PARAMETER
DC CHARACTERISTICS
Supply Voltage
Ground Current
V
IN
Quiescent condition: I
O1
= 0µA; I
O2
= 0µA
I
DD1
I
DD2
One LDO active
Both LDO active
@ +25°C
2.3
6.5
V
25
45
0.1
1.9
1.6
2.1
1.8
40
60
1.0
2.3
2.0
+1.8
µA
µA
µA
V
V
%
%/V
%
%
mA
mA
Shutdown Current
UVLO Threshold
I
DDS
V
UV+
V
UV-
Regulation Voltage Accuracy
Line Regulation
Load Regulation
Variation from nominal voltage output, V
IN
= V
O
+ 0.5V to 5.5V,
T
J
= -40°C to +125°C
V
IN
= (V
OUT
+ 1.0V relative to highest output voltage) to 5.5V
I
OUT
= 100µA to 150mA (VO1 and VO2)
I
OUT
= 100µA to 300mA (VO2)
I
MAX
I
LIM
V
DO1
V
DO2
V
DO3
V
DO4
I
O
= 150mA; V
O
>
2.1V (VO1)
I
O
= 300mA; V
O
< 2.5V (VO2)
I
O
= 300mA; 2.5V
≤
V
O
≤
2.8V (VO2)
I
O
= 300mA; V
O
> 2.8V (VO2)
VO1: Continuous
VO2: Continuous
-1.8
-0.2
0
0.1
0.2
0.7
1.0
Maximum Output Current
150
300
350
475
125
300
250
200
145
110
600
200
500
400
325
Internal Current Limit
Dropout Voltage (Note 6)
mA
mV
mV
mV
mV
°C
°C
Thermal Shutdown Temperature
T
SD+
T
SD-
AC CHARACTERISTICS
Ripple Rejection
I
O
= 10mA, V
IN
= 2.8V(min), V
O
= 1.8V, C
BYP
= 0.1µF
@ 1kHz
@ 10kHz
@ 100kHz
Output Noise Voltage
I
O
= 100µA, V
O
= 1.5V, T
A
= +25°C, C
BYP
= 0.1µF
BW = 10Hz to 100kHz
70
55
40
30
dB
dB
dB
µV
RMS
3
FN9219.5
March 10, 2008
ISL9011
Electrical Specifications
Unless otherwise noted, all parameters are guaranteed over the operational supply voltage and temperature
range of the device as follows:
T
A
= -40°C to +85°C; V
IN
= (V
O
+ 1.0V) to 6.5V with a minimum V
IN
of 2.3V; C
IN
= 1µF; C
O
= 1µF;
C
BYP
= 0.01µF:
(Continued)
SYMBOL
TEST CONDITIONS
MIN
MAX
(Note 7) TYP (Note 7)
UNITS
PARAMETER
DEVICE START-UP CHARACTERISTICS
Device Enable Time
LDO Soft-Start Ramp Rate
t
EN
t
SSR
Time from assertion of the ENx pin to when the output voltage
reaches 95% of the VO(nom)
Slope of linear portion of LDO output voltage ramp during
start-up
250
30
500
60
µs
µs/V
EN1, EN2 PIN CHARACTERISTICS
Input Low Voltage
Input High Voltage
Input Leakage Current
Pin Capacitance
NOTE:
6. VOx = 0.98*VOx(NOM); Valid for VOx greater than 1.85V.
7. Parts are 100% tested at +25°C. Temperature limits established by characterization and are not production tested.
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Test/Measurement
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