Datasheet

LTC3766
4
3766fa
For more information www.linear.com/LTC3766
elecTrical characTerisTics
The l denotes the specifications which apply over the specified operating
junction temperature range, otherwise specifications are at T
A
= 25°C. (Note 2) V
IN
= 15V, GND = PGND = 0V, unless otherwise noted.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNITS
Drivers and Control
FG, SG R
UP
FG, SG Driver Pull-Up On-Resistance 1.5 Ω
FG, SG R
DOWN
FG, SG Driver Pull-Down On-Resistance 1.0 Ω
PT
+
, PT
–
R
UP
PT
+
, PT
–
Driver Pull-Up Resistance 1.5 Ω
PT
+
,PT
–
R
DOWN
PT
+
, PT
–
Driver Pull-Down Resistance 1.5 Ω
t
FGD
FGD Delay R
FGD
= 10kΩ
R
FGD
= 100kΩ
50
436
65
545
80
654
ns
ns
t
SGD
SGD Delay R
SGD
= 15kΩ
R
SGD
= 50kΩ
60
195
75
230
90
265
ns
ns
V
SW(REV)
SG Reverse Overcurrent SW Threshold LV MODE
HV MODE
66
140
73
148
79
156
mV
mV
I
SW(REV)
SG Reverse Overcurrent Adjust Current LV MODE
HV MODE
–86
–34.5
–103
–42
–120
–49
µA
µA
V
CC
Supply
V
CCOP
V
CC
Operating Voltage Range 5 10 V
I
CC
Supply Current
Normal Mode
Shutdown
V
FS/SYNC
= V
CC
= 7V (Note 5)
V
RUN
= GND
5
210
mA
µA
V
UVLOR
UV Lockout Rising V
CC
Rising, LV MODE
V
CC
Rising, HV MODE
l
l
4.6
7.7
4.7
7.9
4.8
8.1
V
V
V
UVLOF
UV Lockout Falling V
CC
Falling, LV MODE
V
CC
Falling, HV MODE
l
l
3.8
6.7
3.9
6.9
4.0
7.1
V
V
V
REGSD
REGSD Threshold Voltage V
REGSD
Rising 1.21 V
I
REGSD(C)
REGSD Charge Current V
REGSD
= 0.7V 13 μA
I
REGSD(D)
REGSD Discharge Current V
REGSD
= 0.7V 3 μA
V
AUX
Supply
V
AUXOP
V
AUX
Operating Voltage Range 5 15 V
V
CCVAUX
Regulated V
CC
Output Voltage V
AUX
= 15V, LV MODE
V
AUX
= 15V, HV MODE
6.7
8.1
7.0
8.5
7.3
8.9
V
V
V
AUXLR
V
CC
Load Regulation I
CC
= 0mA to 120mA, V
AUX
= 8V, LV MODE 0.8 2 %
V
AUXSWP
V
AUX
Switchover Voltage Rising V
AUX
Ramping Positive, LV MODE
V
AUX
Ramping Positive, HV MODE
4.50
7.65
4.70
8.00
4.88
8.35
V
V
V
AUXSWN
V
AUX
Switchover Voltage Falling V
AUX
Ramping Negative, LV MODE
V
AUX
Ramping Negative, HV MODE
4.30
7.35
4.50
7.70
4.70
8.05
V
V
R
AUX
V
AUX
Dropout Resistance I
CC
= 120mA, V
AUX
= 4.9V 1.7 2.5 Ω
R
PSL
V
AUX
Pre-Switchover Load V
AUX
= 4V 920 Ω
V
IN
Supply
V
INOP
V
IN
Operating Voltage Range 5 32 V
V
INCL
V
IN
Clamp Voltage I
VIN
= 2mA, V
RUN
= GND 28 30 32 V
I
CLMAX
V
IN
Clamp Current Limit V
IN
= 33V, V
RUN
= GND 3.8 5.5 7.2 mA
V
CCVIN
Regulated V
CC
Output Voltage LV MODE (Note 6)
HV MODE (Note 6)
6.7
8.1
7.2
8.5
7.3
8.9
V
V
I
IN
Supply Current
Operating
Shutdown
V
FS/SYNC
= V
CC
V
RUN
= GND
900
450
1200 µA
µA
V
INUVLO
V
IN
Undervoltage Lockout V
IN
Rising 2.6 3.2 3.8 V