LT3756-1 LINER [Linear Technology], LT3756-1 Datasheet - Page 3

• Manufacturer Part Number: LT3756-1
• Description: 60VIN LED Controller with Internal PWM Generator
• Manufacturer: LINER [Linear Technology]

elecTrical characTerisTics
PARAMETER
Error Amplifier
Full-Scale ISP/ISN Current Sense Threshold
(V
1/10th Scale ISP/ISN Current Sense Threshold
(V
Mid-Scale ISP/ISN Current Sense Threshold
(V
ISP/ISN Overcurrent Threshold
ISP/ISN Current Sense Amplifier Input Common Mode
Range (V
ISP/ISN Input Bias Current High Side Sensing (Combined)
ISP/ISN Input Bias Current Low Side Sensing (Combined)
ISP/ISN Current Sense Amplifier g
ISP/ISN Current Sense Amplifier g
CTRL Pin Range for Linear Current Sense Threshold
Adjustment
CTRL Input Bias Current
V
V
FB Regulation Voltage (V
FB Amplifier g
FB Pin Input Bias Current
FB Open LED Threshold
C/10 Inhibit for OPENLED Assertion (V
FB Overvoltage Threshold
V
Oscillator
Switching Frequency
GATE Minimum Off-Time
GATE Minimum On-Time
Linear Regulator
INTV
INTV
INTV
Dropout (V
INTV
INTV
INTV
temperature range, otherwise specifications are at T
C
C
C
ISP-ISN
ISP-ISN
ISP-ISN
Output Impedance
Standby Input Bias Current
Current Mode Gain (∆V
CC
CC
CC
CC
CC
CC
Regulation Voltage
Maximum Operating Voltage
Minimum Operating Voltage
Undervoltage Lockout
Current Limit
Current in Shutdown
)
)
)
ISN
IN
)
– INTV
m
CC
)
FB
VC
)
/∆V
SENSE
m
m
(High Side Sensing)
(Low Side Sensing)
)
ISP-ISN
)
A
CONDITIONS
CTRL ≥ 1.2V, ISP = 48V
CTRL ≥ 1.2V, ISN = 0V
CTRL = 0.2V, ISP = 48V
CTRL = 0.2V, ISN = 0V
CTRL = 0.5V, ISP = 48V
CTRL = 0.5V, ISN = 0V
PWM = 5V (Active), ISP = ISN = 48V
PWM = 0V (Standby), ISP = ISN = 48V
PWM = 5V, ISP = ISN = 0V
V
V
Current Out of Pin
0.9V ≤ V
PWM = 0V
ISP = ISN = 48V, 0V
FB = V
Current Out of Pin, FB = V
OPENLED Falling, ISP Tied to ISN
FB = V
PWMOUT Falling
R
R
C
C
10V ≤ V
I
INTV
EN/UVLO = 0V, INTV
INTVCC
= 25°C. V
ISP-ISN
ISP-ISN
GATE
GATE
T
T
= 95.3kΩ
= 8.87kΩ
CC
= 2200pF
= 2200pF
The
FB
FB
= –10mA, V
= 6V, 8V ≤ V
IN
= 250mV, ISP = 48V
= 250mV, ISN = 0V
C
, ISP = ISN = 48V
, ISN = 48V, 0V
≤ 1.5V
≤ 60V
l
IN
denotes the specifications which apply over the full operating
= 24V, EN/UVLO = 24V, CTRL = 2V, PWM = 5V, unless otherwise noted.
IN
IN
CC
= 7V
≤ 60V
= 8V
FB
l
l
l
l
l
l
l
l
l
l
l
l
1.225
V
65mV
50mV
V
MIN
242
243
–20
925
7.6
8.1
3.9
FB
21
20
96
95
14
FB
85
30
0
0
+
–
50mV
60mV
1.255
–230
V
V
1000
7.85
TYP
250
257
100
105
600
100
120
500
100
160
180
390
0.1
4.1
25
28
70
50
15
40
25
FB
36
FB
4
8
–
+
LT3761
40mV
70mV
1.275
V
V
1050
MAX
8.05
258
268
104
115
100
100
115
1.0
4.5
4.4
30
36
80
20
39
FB
42
13
FB
–
+
UNITS
3
3761f
MΩ
kHz
kHz
mV
mV
mV
mV
mV
mV
mV
mV
V/V
mV
mA
µA
µA
µA
µS
µS
nA
nA
µS
nA
µA
ns
ns
V
V
V
V
V
V
V
V
V