Datasheet

LM3525
www.ti.com SNVS051D –FEBRUARY 2000–REVISED MARCH 2013
DC Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN
= 5.0V, EN = 0V (LM3525-L) or EN = V
IN
(LM3525-H).
Symbol Parameter Conditions Min Typ Max Units
IN to Out pins
R
ON
On-Resistance V
IN
= 5V 80 120 mΩ
V
IN
= 2.7V 120 160
I
OUT
OUT pins continuous output current 0.5 A
I
SC
Short Circuit Output Current See
(1)
0.5 1.0 1.5 A
I
LEAK
OUT pins Output Leakage Current EN = V
IN
(LM3525-L) or 0.15 10 µA
EN = GND (LM3525-H),
OC
THRESH
Over-current Threshold 2.25 3.2 A
I
FO
= 10 mA, V
IN
= 5V 6 25
R
FO
FLAG Output Resistance Ω
I
FO
= 10 mA, V
IN
= 2.7V 8 40
I
EN
EN/EN Leakage Current EN/EN = 0V or EN/EN = V
IN
−0.5 0.5 µA
V
IH
EN/EN Input Voltage See
(2)
2.4 1.9 V
V
IL
EN/EN Input Voltage See
(2)
1.7 0.8 V
V
UVLO
Under-Voltage Lockout V
IN
= Increasing 1.9 V
V
IN
= Decreasing 1.8
I
DDOFF
Supply Current Switch OFF 0.05 1 µA
I
DDON
Supply Current Switch ON 65 100 µA
Th
SD
Overtemperature Shutdown T
J
Increasing 135 °C
Threshold
(1)
T
J
Decreasing 125 °C
I
FH
Error Flag Leakage Current V
FLAG
= 5V 0.1 1 µA
(1) Thermal shutdown will protect the device from permanent damage.
(2) For the LM3525-L, OFF is EN ≥ 2.4V and ON is EN ≤ 0.8V. For the LM3525-H, OFF is EN ≤ 0.8V and ON is EN ≥ 2.4V
AC Electrical Characteristics
Limits in standard typeface are for T
J
= 25°C, and limits in boldface type apply over the full operating temperature range.
Unless otherwise specified: V
IN
= 5.0V.
Symbol Parameter Conditions Min Typ Max Units
t
r
OUT Rise Time R
L
= 10Ω 200 µs
t
f
OUT Fall Time R
L
= 10Ω 20 µs
t
ON
Turn on Delay, EN to OUT R
L
= 10Ω 200 µs
t
OFF
Turn off Delay, EN to OUT R
L
= 10Ω 20 µs
t
OC
Over Current Flag Delay R
L
= 0 1 ms
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