LTC3783 LINER [Linear Technology], LTC3783 Datasheet - Page 3

• Manufacturer Part Number: LTC3783
• Description: Full-Featured LED Driver with 1.5A Switch Current
• Manufacturer: LINER [Linear Technology]

ELECTRICAL CHARACTERISTICS
temperature range, otherwise specifications are at T
PARAMETER
Minimum V
Maximum V
Current Sense Voltage (V
10% Scale Current Sense Voltage (V
Current Sense Voltage Line Regulation
V
Switching Frequency
RT Voltage
Soft-Start Pin Current
SYNC Pull-Down Current (Into the Pin)
SYNC Input Low
SYNC Input High
Maximum Duty Cycle
Switch Current Limit
Switch V
Switch Leakage Current
CTRL Input Bias Current
Error Amplifier Transconductance
VC Output Impedance
VC Idle Input Bias Current
FB Pin Input Bias Current
FB Pin Threshold
ISP , ISN Idle Input Bias Current
ISP , ISN Full-Scale Input Bias Current
SHDN Voltage High
SHDN Voltage Low
SHDN Pin Bias Current
PWM Input High Voltage
PWM Input Low Voltage
PWM Pin Bias Current
IN
Supply Current
CESAT
IN
IN
Operating Voltage
Operating Voltage
ISP
– V
ISN
)
ISP
– V
ISN
)
CONDITIONS
Continuous Operation (Note 3)
V
V
V
2V < V
PWM > 1.5V, VC = 0V
PWM = 0V
SHDN = 0V
R
R
R
SS = 0.5V, Out of Pin
V
R
SYNC = 300kHz Clock Signal, R
R
R
I
V
Current Out of Pin, V
PWM = 0V, VC = 1V
Current Out of Pin, V
PWM = 0V, ISP = ISN = 24V
ISP Tied to ISN, V
–40°C ≤ T
125°C < T
–40°C ≤ T
125°C < T
SW
CTRL
CTRL
CTRL
SYNC
SW
T
T
T
T
T
T
= 16.7k
= 4.03k
= 91.5k
= 91.5k (250kHz)
= 16.7k (1MHz)
= 4.03k (2.5MHz)
= 1A
= 45V, PWM = 0V
A
= 2V, V
= 2V, V
= 100mV, V
ISP
= 2V
= 25°C. (Note 2) V
< 45V
J
J
J
J
≤ 150°C
≤ 150°C
≤ 125°C
≤ 125°C
The
ISP
ISP
= 24V, VC = 1V
= 0V, VC = 1V
●
ISP
ISP
denotes the specifications which apply over the full operating
CTRL
FB
= 24V, VC = 1V
= 24V, V
= 0.5V
= 0.1V
IN
CTRL
= 5V, SHDN = 5V, PWM = 5V unless otherwise noted.
T
= 91.5k
= 2V
●
●
●
●
●
●
MIN
0.85
2.25
0.98
220
–20
1.5
1.5
1.2
1.2
30
96
95
94
85
6
1000
0.03
1.01
TYP
100
100
250
300
550
4.5
0.1
2.5
1.9
60
97
96
90
74
20
20
20
60
60
9
6
1
1
9
0
LT3517
MAX
1.15
1.04
0.45
0.40
0.45
0.40
103
270
100
100
300
100
120
2.7
0.4
2.3
10
12
20
3
1
2
UNITS
3517ff
3
MHz
MHz
%/V
kHz
mV
mV
mV
mA
mA
mV
kΩ
μA
μA
μA
μA
nA
μS
nA
nA
nA
μA
μA
μA
%
%
%
%
V
V
V
V
V
A
V
V
V
V
V
V
V