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.
NOTE:
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. Limits established by characterization and are not production tested.
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
+0.5V) to 6.5V with a minimum V
IN
of 2.3V; C
IN
= 1µF; C
O
= 1µF
SYMBOL
TEST CONDITIONS
MIN
(Note 7
TYP
MAX
(Note 7)
UNITS
PARAMETER
DC CHARACTERISTICS
Supply Voltage
Ground Current
Shutdown Current
UVLO Threshold
V
IN
I
DD
I
DDS
V
UV+
V
UV-
Quiescent condition: I
O
= 0µA
2.3
45
0.5
1.9
1.6
Initial accuracy at V
IN
= V
O
+ 0.5V, I
O
= 10mA, T
J
= +25°C
V
IN
= V
O
+ 0.5V to 6.5V, I
O
= 10µA to150mA, T
J
=+ 25°C
V
IN
= V
O
+ 0.5V to 6.5V, I
O
= 10µA to 150mA, T
J
= -40°C to
+125°C
-0.7
-0.8
-1.8
150
175
I
O
= 150mA; V
O
<
2.5V
I
O
= 150mA; 2.5V
≤
V
O
≤
2.8V
I
O
= 150mA; 2.8V
<
V
O
265
300
250
200
140
110
2.1
1.8
6.5
65
1.2
2.3
2.0
+0.7
+0.8
+1.8
V
µA
µA
V
V
%
%
%
mA
Regulation Voltage Accuracy
Maximum Output Current
Internal Current Limit
Drop-out Voltage (Note 6)
I
MAX
I
LIM
V
DO1
V
DO2
V
DO3
Continuous
355
500
400
325
mA
mV
mV
mV
°C
°C
Thermal Shutdown Temperature
T
SD+
T
SD-
AC CHARACTERISTICS
Ripple Rejection (Note 6)
I
O
= 10mA, V
IN
= 2.8V(min), V
O
= 1.8V
@ 1kHz
@ 10kHz
@ 100kHz
Output Noise Voltage (Note 6)
V
O
= 1.5V, T
A
= +25°C
BW = 10Hz to 100kHz, I
O
= 100µA
BW = 10Hz to 100kHz, I
O
= 10mA
DEVICE START-UP CHARACTERISTICS
Device Enable tIme
t
EN
Time from assertion of the ENx pin to when the output voltage
reaches 95% of the VO(nom)
250
500
µs
45
65
µV
RMS
µV
RMS
65
45
35
dB
dB
dB
3
FN9235.1
March 11, 2008
ISL9008
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
+0.5V) to 6.5V with a minimum V
IN
of 2.3V; C
IN
= 1µF; C
O
= 1µF
(Continued)
SYMBOL
t
SSR
TEST CONDITIONS
Slope of linear portion of LDO output voltage ramp during start-up
MIN
(Note 7
TYP
30
MAX
(Note 7)
60
UNITS
µs/V
PARAMETER
LDO Soft-start Ramp Rate
EN PIN CHARACTERISTICS
Input Low Voltage
Input High Voltage
Input Leakage Current
Pin Capacitance
NOTES:
V
IL
V
IH
I
IL
, I
IH
C
PIN
Informative
-0.3
1.4
0.4
V
IN
+ 0.3
0.1
5
V
V
µA
pF
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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