EVALUATIONBOARD datasheet(7/16 Pages) INTERSIL

7 / 16 page

ISL75052SEH

FN8456.0

May 29, 2013

Applications Information

Input Voltage Requirements

This RH LDO will work from a VIN in the range of 4.0V to 13.2V.

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

an LDO, VIN must be some margin higher than the output voltage

plus dropout at the maximum rated current of the application if

active filtering (PSRR) is expected from VIN to VOUT. The Dropout

spec of this family of LDOs has been generously specified in

order to allow design for efficient operation.

External Capacitor Requirements

GENERAL GUIDELINE

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.

OUTPUT CAPACITOR

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 60m

Ω rated,

KEMET T541 series tantalum capacitor, in parallel with a 0.1µF

MIL-PRF-49470 ceramic capacitor to be connected to VOUT and

Ground pins of the LDO with PCB traces no longer than 0.5cm.

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 60m

Ω rated,

KEMET T541 series tantalum capacitor in parallel with a 0.1µF

MIL-PRF-49470 ceramic capacitor to be connected to VIN and

Ground pins of the LDO with PCB traces no longer than 0.5cm.

Current Limit Protection

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

DEVICE START-UP CHARACTERISTICS

Enable Pin Characteristics

Turn-on Threshold

4.0V < VIN < 13.2V

0.5

0.8

1.2

Enable Pin Leakage Current

VIN = 13.2V, EN = 5.5V

µA

Enable Pin Propagation Delay (EN

step 1.2V to VOUT = 100mV)

VIN = 4.5V, VOUT = 4.0V, ILOAD = 1.5A,

COUT = 22µF, CBYP = 0.2µF

0.5

1.0

Enable Pin Turn-on Delay

(EN step 1.2V to PGOOD)

VIN = 4.5V, VOUT = 4.0V, ILOAD = 1.5A,

COUT = 2x100µF, CBYP = 0.2µF

1.4

3.0

Enable Pin Turn-on Delay

(EN step 1.2V to PGOOD)

VIN = 4.5V, VOUT = 4.0V, ILOAD = 1.5A,

COUT = 22µF, CBYP = 0.2µF

1.1

2.5

Hysteresis (Falling Threshold)

4.0V < VIN < 13.2V

170

PG Pin Characteristics

VOUT Error Flag Rising Threshold

%VOUT

VOUT Error Flag Falling Threshold

%VOUT

VOUT Error Flag Hysteresis

1.75

2.5

%VOUT

Error Flag Low Voltage

ISINK = 1mA

100

Error Flag Low Voltage

ISINK = 10mA

400

Error Flag Leakage Current

VIN = 13.2V, PG = 5.5V

µA

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 VIN and VOUT when the supply produces a 2% drop in VOUT from its nominal value.

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 VOUT = >2.5V with CIN = COUT = 2x100µF 10V 60mΩ in parallel with

0.1µF CDR04 X7R capacitor. Capacitor on BYP = 0.1µF CDR04 X7R.

Electrical Specifications Unless otherwise noted, all parameters are guaranteed over the following specified conditions:

VIN =VOUT +0.5V, VOUT = 4.0V, CIN = COUT = 2x100µF 60mΩ, KEMET type T541X107N025AH or equivalent, TJ = +25°C, IL = 0A. Applications must follow

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 TJ =TA

defines guaranteed limits. (Continued)

PARAMETER

SYMBOL

TEST CONDITIONS

MIN

(Note 8)

TYP

MAX

(Note 8)

UNITS

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