Datasheet

LM3404, LM3404HV
www.ti.com SNVS465F –OCTOBER 2006–REVISED MAY 2013
ELECTRICAL CHARACTERISTICS
LM3404
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 Typ Max Units
SYSTEM PARAMETERS
t
ON-1
On-time 1 V
IN
= 10V, R
ON
= 200 kΩ 2.1 2.75 3.4 µs
t
ON-2
On-time 2 V
IN
= 40V, R
ON
= 200 kΩ 515 675 835 ns
(1) Typical specifications represent the most likely parametric norm at 25°C operation.
LM3404HV
Symbol Parameter Conditions Min Typ Max Units
SYSTEM PARAMETERS
t
ON-1
On-time 1 V
IN
= 10V, R
ON
= 200 kΩ 2.1 2.75 3.4 µs
t
ON-2
On-time 2 V
IN
= 70V, R
ON
= 200 kΩ 325 415 505 ns
LM3404/LM3404HV
(1)
Symbol Parameter Conditions Min Typ Max Units
REGULATION AND OVER-VOLTAGE COMPARATORS
V
REF-REG
CS Regulation Threshold CS Decreasing, SW turns on 194 200 206 mV
V
REF-0V
CS Over-voltage Threshold CS Increasing, SW turns off 300 mV
I
CS
CS Bias Current CS = 0V 0.1 µA
SHUTDOWN
V
SD-TH
Shutdown Threshold R
ON
/ SD Increasing 0.3 0.7 1.05 V
V
SD-HYS
Shutdown Hysteresis R
ON
/ SD Decreasing 40 mV
OFF TIMER
t
OFF-MIN
Minimum Off-time CS = 0V 270 ns
INTERNAL REGULATOR
V
CC-REG
V
CC
Regulated Output 6.4 7 7.4 V
V
IN-DO
V
IN
- V
CC
I
CC
= 5 mA, 6.0V < V
IN
< 8.0V 300 mV
V
CC-BP-TH
V
CC
Bypass Threshold V
IN
Increasing 8.8 V
V
CC-BP-HYS
V
CC
Bypass Hysteresis V
IN
Decreasing 230 mV
V
CC-Z-6
V
IN
= 6V 55
Ω
V
CC
Output Impedance
V
CC-Z-8
V
IN
= 8V 50
(0 mA < I
CC
< 5 mA)
V
CC-Z-24
V
IN
= 24V 0.4
V
CC-LIM
V
CC
Current Limit
(1)
V
IN
= 24V, V
CC
= 0V 16 mA
V
CC-UV-TH
V
CC
Under-voltage Lock-out Threshold V
CC
Increasing 5.3 V
V
CC-UV-HYS
V
CC
Under-voltage Lock-out Hysteresis V
CC
Decreasing 150 mV
V
CC-UV-DLY
V
CC
Under-voltage Lock-out Filter Delay 100 mV Overdrive 3 µs
I
IN-OP
I
IN
Operating Current Non-switching, CS = 0.5V 625 900 µA
I
IN-SD
I
IN
Shutdown Current RON / SD = 0V 95 180 µA
CURRENT LIMIT
I
LIM
Current Limit Threshold 1.2 1.5 1.8 A
DIM COMPARATOR
V
IH
Logic High DIM Increasing 2.2 V
V
IL
Logic Low DIM Decreasing 0.8 V
I
DIM-PU
DIM Pull-up Current DIM = 1.5V 80 µA
(1) VCC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.
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