Photoflash Capacitor Chargers With Output Voltage Monitor And Integrated Igbt Drive
LT3485-0 LT3485-1
ABSOLUTE
(Note 1)
AXI U RATI GS
PACKAGE/ORDER I FOR ATIO
TOP VIEW
CHARGE
V
BAT
V
IN
SW
SW
1
2
3
4
5
11
10 V
MONT
9 DONE
8 IGBTPWR
7 IGBTIN
6 IGBTOUT
V
IN
Voltage .............................................................. 10V
V
BAT
Voltage ............................................................ 10V
SW Voltage ................................................... –1V to 50V
SW Pin Negative Current ...................................... –0.5A
CHARGE Voltage ...................................................... 10V
IGBTIN Voltage ........................................................ 10V
IGBTOUT Voltage ..................................................... 10V
DONE Voltage .......................................................... 10V
IGBTPWR Voltage .................................................... 10V
V
MONT
Voltage ......................................................... 10V
Current into DONE Pin ............................... 0.2mA/–1mA
Maximum Junction Temperature .......................... 125°C
Operating Temperature Range (Note 2) ... –40°C to 85°C
Storage Temperature Range .................. –65°C to 125°C
DD PACKAGE
10-LEAD (3mm
´
3mm) PLASTIC DFN
T
JMAX
= 125°C
θ
JA
= 43°C/W
EXPOSED PAD (11) IS GND, MUST BE SOLDERED TO PCB
ORDER PART NUMBER
DD PART MARKING
LBRH
LBVN
LBVP
LBTK
Order Options
Tape and Reel: Add #TR
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
http://www.linear.com/leadfree/
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
PARAMETER
Quiescent Current
V
IN
Voltage Range
V
BAT
Voltage Range
Switch Current Limit
The
●
denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C. V
IN
= V
BAT
= V
CHARGE
= 3V, unless otherwise noted.
CONDITIONS
Not Switching
V
CHARGE
= 0V
●
●
MIN
TYP
5
0
2.5
1.7
1.6
1.1
0.75
0.45
1.7
1.2
0.85
0.55
310
210
170
100
31.5
200
45
65
0
MAX
8
1
10
10
1.8
1.3
0.95
0.65
400
300
225
175
32
400
120
100
0.1
UNITS
mA
µA
V
V
A
A
A
A
mV
mV
mV
mV
V
mV
mV
µA
µA
Switch V
CESAT
V
OUT
Comparator Trip Voltage
V
OUT
Comparator Overdrive
DCM Comparator Trip Voltage
CHARGE Pin Current
LT3485-1
LT3485-3 I
SW
= 1.5A
LT3485-0 I
SW
= 1A
LT3485-2 I
SW
= 700mA
LT3485-1 I
SW
= 400mA
Measured as V
SW
– V
IN
300ns Pulse Width
Measured as V
SW
– V
IN
V
CHARGE
= 3V
V
CHARGE
= 0V
●
●
31
10
34850123fb
2
U
W
U
U
W W
W