Texas Instruments LM3404 Evaluation Boards LM3404HVEVAL/NOPB LM3404HVEVAL/NOPB 사용자 설명서
제품 코드
LM3404HVEVAL/NOPB
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.
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 k
Ω
2.1
2.75
3.4
µs
t
ON-2
On-time 2
V
IN
= 40V, R
ON
= 200 k
Ω
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 k
Ω
2.1
2.75
3.4
µs
t
ON-2
On-time 2
V
IN
= 70V, R
ON
= 200 k
Ω
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.
Copyright © 2006–2013, Texas Instruments Incorporated
5
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