LT3472
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
SWP
V
IN
SHDN
SWN
DN
1
2
3
4
5
11
10 V
POS
9 SSP
8 FBP
7 SSN
6 FBN
V
IN
, SHDN Voltage ................................................... 16V
SWP, SWN, V
POS
Voltage ....................................... 36V
DN Voltage ............................................................ –36V
FBP, FBN, SSP, SSN Voltage ................................... 10V
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range
Extended Commercial ......................... –40°C to 85°C
Storage Temperature Range ................. – 65°C to 125°C
ORDER PART
NUMBER
LT3472EDD
DFN PART
MARKING
LBGC
DD PACKAGE
10-LEAD (3mm
×
3mm) PLASTIC DFN
T
JMAX
= 125°C,
θ
JA
= 43°C/W,
θ
JC
= 3°C/W
EXPOSED PAD IS GND (PIN 11)
MUST BE SOLDERED TO PCB
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= 3V, SHDN = 3V unless otherwise noted.
PARAMETER
Minimum Operation Voltage
Maximum Operation Voltage
Supply Current
SHDN Voltage High
SHDN Voltage Low
SHDN Pin Bias Current
Positive Feedback Voltage
Negative Feedback Voltage
Positive Feedback Voltage Line Regulation
Negative Feedback Voltage Line Regulation
FBP Current
FBN Current
FBP to Start Negative Channel
Switching Frequency
Maximum Duty Cycle (Both Channels)
Positive Channel Switch Current Limit
Negative Channel Switch Current Limit
Positive Channel Switch V
CESAT
Negative Channel Switch V
CESAT
Switch Leakage Current (Both Channels)
Schottky DP Forward Drop
Schottky DN Forward Drop
Schottky Leakage Current (Both Channels)
I
SWP
= 200mA
I
SWN
= 200mA
V
SW
= 5V
I
DP
= 150mA
I
DN
= 150mA
V
R
= 36V
●
●
●
ELECTRICAL CHARACTERISTICS
CONDITIONS
MIN
2.2
TYP
MAX
16
UNITS
V
V
mA
µA
V
V
µA
V
mV
%/V
mV/V
SHDN = 3V, Not Switching
SHDN = 0V
●
●
2.8
0.1
0.8
1
0.3
SHDN = 3V
●
●
35
1.2
–5
1.25
0
0.01
0.008
1.3
5
FBP = V
FBP
FBN = V
FBN
●
●
24.5
24.5
1.02
0.9
88
250
300
25
25
1.1
1.1
92
350
400
245
400
0.01
700
750
25.3
25.3
1.18
1.4
5
950
1000
4
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The LT3472E is guaranteed to meet specified performance from
0°C to 70°C. Specifications over the –40°C to 85°C operating range are
assured by design, characterization and correlation with statistical process
controls.
3472f
2
U
µA
µA
V
MHz
%
mA
mA
mV
mV
µA
mV
mV
µA
W
U
U
W W
W
LINER [ LINEAR TECHNOLOGY ]
