ISL75052SEH
Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the following specified conditions:
V
= V
OUT
+ 0.5V, V
OUT
= 4.0V, C = C
IN
= 2x100µF 60mΩ, KEMET type T541X107N025AH or equivalent, T = +25°C, I = 0A. Applications must follow
OUT J L
IN
thermal guidelines of the package to determine worst case junction temperature. Please refer to “Applications Information” on page 7 of the data sheet
and Tech Brief TB379. Boldface limits apply over the operating temperature range, -55°C to +125°C. Pulse load techniques used by ATE to ensure T = T
J
A
defines guaranteed limits. (Continued)
MIN
MAX
PARAMETER
SYMBOL
TEST CONDITIONS
(Note 8) TYP (Note 8) UNITS
DEVICE START-UP CHARACTERISTICS
Enable Pin Characteristics
Turn-on Threshold
4.0V < V < 13.2V
IN
0.5
0.8
1.2
1
V
Enable Pin Leakage Current
V
= 13.2V, EN = 5.5V
µA
ms
IN
Enable Pin Propagation Delay (EN
V
= 4.5V, V
OUT
= 4.0V, I
= 1.5A,
= 1.5A,
0.5
1.4
1.1
170
1.0
IN
LOAD
LOAD
step 1.2V to V
OUT
= 100mV)
C
= 22µF, C
= 0.2µF
OUT
BYP
Enable Pin Turn-on Delay
(EN step 1.2V to PGOOD)
V
C
= 4.5V, V
= 4.0V, I
3.0
2.5
ms
ms
mV
IN
OUT
= 2x100µF, C
= 0.2µF
OUT
BYP
= 4.0V, I
Enable Pin Turn-on Delay
(EN step 1.2V to PGOOD)
V
C
= 4.5V, V
= 1.5A,
IN
OUT
= 22µF, C
LOAD
= 0.2µF
OUT
BYP
Hysteresis (Falling Threshold)
PG Pin Characteristics
4.0V < V < 13.2V
75
IN
V
V
V
Error Flag Rising Threshold
Error Flag Falling Threshold
Error Flag Hysteresis
83
80
88
86
2.5
5
94
91
%V
OUT
OUT
OUT
OUT
OUT
OUT
%V
%V
1.75
Error Flag Low Voltage
Error Flag Low Voltage
Error Flag Leakage Current
I
I
= 1mA
100
400
1
mV
SINK
= 10mA
5
mV
µA
SINK
V
= 13.2V, PG = 5.5V
IN
8. Parameters with bold face MIN and/or MAX limits are 100% tested at -55°C, 25°C and 125°C.
9. Limits established by characterization and are not production tested.
10. Dropout is defined by the difference in supply V and V
IN OUT
when the supply produces a 2% drop in V from its nominal value.
OUT
11. Refer to thermal package guidelines in “Bottom Metal Mounting Guidelines” on page 8..
12. OCP recovery overshoot should be within ±4% of the nominal VOUT setpoint.
13. SET performance of <±5% at LET = 86MeV.cm2/mg has been evaluated at V
0.1µF CDR04 X7R capacitor. Capacitor on BYP = 0.1µF CDR04 X7R.
= >2.5V with C = C
IN
= 2x100µF 10V 60mΩ in parallel with
OUT
OUT
OUTPUT CAPACITOR
Applications Information
Input Voltage Requirements
It is recommended to use a combination of Tantalum and
Ceramic capacitors to achieve a good volume to capacitance
ratio. The recommended combination is a 2x100µF 60mΩ rated,
KEMET T541 series tantalum capacitor, in parallel with a 0.1µF
MIL-PRF-49470 ceramic capacitor to be connected to V
Ground pins of the LDO with PCB traces no longer than 0.5cm.
This RH LDO will work from a V in the range of 4.0V to 13.2V.
IN
The input supply can have a tolerance of as much as ±10% for
conditions noted in the specification table. The minimum
guaranteed input voltage is 4.0V. However, due to the nature of
and
OUT
an LDO, V must be some margin higher than the output voltage
plus dropout at the maximum rated current of the application if
IN
INPUT CAPACITOR
It is recommended to use a combination of Tantalum and
Ceramic capacitors to achieve a good capacitance to volume
ratio. The recommended combination is a 2x100µF 60mΩ rated,
KEMET T541 series tantalum capacitor in parallel with a 0.1µF
active filtering (PSRR) is expected from V to V . The Dropout
spec of this family of LDOs has been generously specified in
order to allow design for efficient operation.
IN OUT
External Capacitor Requirements
MIL-PRF-49470 ceramic capacitor to be connected to V and
Ground pins of the LDO with PCB traces no longer than 0.5cm.
IN
GENERAL GUIDELINE
Current Limit Protection
External capacitors are required for proper operation. Careful
attention must be paid to layout guidelines and selection of
capacitor type and value to ensure optimal performance.
The RH LDO incorporates protection against overcurrent due to
any short or overload condition applied to the output pin. The
current limit circuit performs as a constant current source when
the output current exceeds the current limit threshold which can
be adjusted by means of a resistor connected between the OCP
FN8456.0
May 29, 2013
7