Datasheet

LM3409, LM3409HV, LM3409-Q1
SNVS602J –MARCH 2009–REVISED MAY 2013 www.ti.com
Electrical Characteristics LM3409/09N/09Q/09HV/09QHV (continued)
V
IN
= 24V unless otherwise indicated. Typicals and limits appearing in plain type apply for T
A
= T
J
= +25°C
(1)
. Limits
appearing in boldface type apply over full Operating Temperature Range. Datasheet min/max specification limits are
specified by design, test, or statistical analysis.
Symbol Parameter Conditions Min
(2)
Typ
(1)
Max
(2)
Units
R
PGATE
Driver output resistance Sourcing 50 mA 2 Ω
Sinking 50 mA 2
VCC REGULATOR
V
CC
VIN pin voltage - VCC pin V
IN
> 9V 5.5 6 6.5 V
voltage 0 < I
CC
< 20 mA
V
CC-UVLO
V
CC
under voltage lockout V
CC
increasing 3.73 V
threshold
V
CC-HYS
V
CC
UVLO hysteresis V
CC
decreasing 283 mV
I
CC-LIM
V
CC
regulator current limit 30 45 mA
OFF-TIMER AND ON-TIMER
V
OFT
Off-time threshold 1.122 1.243 1.364 V
t
D-OFF
COFF threshold to PGATE 25 ns
falling delay
t
ON-MIN
Minimum on-time 115 211 ns
t
OFF-MAX
Maximum off-time 300 µs
UNDER VOLTAGE LOCKOUT
I
UVLO
UVLO pin current V
UVLO
= 1V 10 nA
V
UVLO-R
Rising UVLO threshold 1.175 1.243 1.311 V
I
UVLO-HYS
UVLO hysteresis current 22 µA
ENABLE
I
EN
EN pin current 10 nA
V
EN-TH
EN pin threshold V
EN
rising 1.74 V
V
EN
falling .5
V
EN-HYS
EN pin hysteresis 420 mV
t
EN-R
EN pin rising delay EN rise - PGATE fall 42 ns
t
EN-F
EN pin falling delay EN fall - PGATE rise 21 ns
THERMAL RESISTANCE
θ
JA
Junction to Ambient VSSOP-10 Package
(4)
50 °C/W
PDIP-14 Package 87
θ
JC
Junction to Case VSSOP-10 Package
(4)
15
PDIP-14 Package 37
(4) Measured with DAP soldered to a minimum of 2 square inches of 1oz. copper on the top or bottom PCB layer. Actual value will be
different depending upon the application environment.
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