Datasheet

LP3988
www.ti.com SNVS161D –OCTOBER 2001–REVISED MAY 2013
ELECTRICAL CHARACTERISTICS (continued)
Unless otherwise specified: V
EN
= 1.8V, V
IN
= V
OUT
+ 0.5V, C
IN
= 1 µF, I
OUT
= 1mA, C
OUT
= 1 µF. Typical values and limits
appearing in standard typeface are for T
J
= 25°C. Limits appearing in boldface type apply over the entire junction
temperature range for operation, −40°C to +125°C.
(1) (2)
Limit
Symbol Parameter Conditions Typ Units
Min Max
Power Good
Power Good
V
THL
Low threshold % of V
OUT
(PG ON) Figure 4 93 90 95 %
V
THH
High Threshold % of V
OUT
(PG OFF) Figure 4
(7)
95 92 98
V
OL
PG Output Logic Low Voltage I
PULL-UP
= 100µA, fault condition 0.02 0.1 V
I
PGL
PG Output Leakage Current PG Off, V
PG
= 6V 0.02 µA
T
ON
Power Good Turn On time,
(8)
V
IN
= 4.2V 10 µs
T
OFF
Power Good Turn Off time,
(8)
V
IN
= 4.2V 10 µs
(7) The low and high thresholds are generated together. Typically a 2.6% difference is seen between these thresholds.
(8) Turn-on time is measured between the enable input just exceeding VIH and the output voltage just reaching 95% of its nominal value.
Copyright © 2001–2013, Texas Instruments Incorporated Submit Documentation Feedback 5
Product Folder Links: LP3988