lt3741 Linear Technology Corporation, lt3741 Datasheet - Page 3

• Manufacturer Part Number: lt3741
• Description: High Power, Constant Current, Constant Voltage, Step-down Controller
• Manufacturer: Linear Technology Corporation

elecTrical characTerisTics
temperature range, otherwise specifications are at T
PARAMETER
Input Voltage Range
V
EN/UVLO Pin Falling Threshold
EN/UVLO Hysteresis
EN/UVLO Pin Current
SYNC Pin Threshold
CTRL1 Pin Control Range
CTRL1 Pin Current
Reference
Reference Voltage (V
Inductor Current Sensing
Full Range SENSE
SENSE
SENSE
Internal V
Regulation Voltage
NMOS FET Driver
Non-Overlap time HG to LG
Non-Overlap time LG to HG
Minimum On-Time LG
Minimum On-Time HG
Minimum Off-Time LG
High Side Driver Switch On-Resistance
Low Side Driver Switch On-Resistance
Switching Frequency
f
Soft-Start
Charging Current
Voltage Regulation Amplifier
Input Bias Current
g
Feedback Regulation Voltage
SW
m
IN
Non-Switching Operation
Shutdown Mode
Gate Pull Up
Gate Pull Down
Gate Pull Up
Gate Pull Down
Pin Quiescent Current (Note 2)
+
–
Pin Current
Pin Current
CC
Regulator (V
+
to SENSE
REF
Pin)
CC_INT
–
Pin)
CONDITIONS
Not Switching
V
V
CTRL1 = 1.5V
V
With V
(Note 3)
(Note 3)
(Note 3)
V
V
R
R
FB = 1.3V
CTRL1 = 1.5V, I
EN/UVLO
IN
CTRL1
CBOOT
CC_INT
T
T
= 40kΩ
= 200kΩ
= 6V, EN/UVLO = 1.45V
OUT
= 1.5V
– V
= 5V
= 0V
~ 4V, V
A
SW
= 25°C. V
= 5V
SENSE
CTRL1
The
–
= 23µA
l
= 0V
IN
denotes the specifications which apply over the full operating
= 12V, V
EN/UVLO
= 5V, unless otherwise noted.
l
l
l
l
l
l
l
1.192
1.49
1.94
MIN
900
190
4.7
48
6
0
1000
1.55
1.21
TYP
130
100
100
218
850
800
1.8
0.1
5.5
1.0
2.3
1.3
2.3
1.0
51
50
10
60
50
80
65
11
2
5
1.228
1070
MAX
1.61
2.06
LT3741
233
2.5
1.5
5.2
36
54
1
UNITS

µA/V
3741f
kHz
kHz
mA
mV
mV
µA
µA
nA
nA
µA
µA
nA
ns
ns
ns
ns
ns
Ω
Ω
Ω
Ω
V
V
V
V
V
V
V