LT3437 LINER [Linear Technology], LT3437 Datasheet - Page 2

• Manufacturer Part Number: LT3437
• Description: High Voltage 500mA, 200kHz Step-Down Switching Regulator with 100uA Quiescent Current
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
LT3437
(Note 1)
V
V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage Operating ................................. 75V
BOOST Pin 100ms Transient, <15% Duty Cycle ...... 85V
SYNC, C
temperature range, otherwise specifications are at T
C
SYMBOL
V
I
I
I
PACKAGE/ORDER I FOR ATIO
2
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
SHDN
VINS
VIN
SHDN
SS
IN
IN
Order Options
Lead Free: Add #PBF Lead Free Tape and Reel: Add #TRPBF
Lead Free Part Marking:
ORDER PART NUMBER
/SYNC = 0V unless otherwise noted.
, SHDN, BIAS, SW Operating ............................. 60V
, SHDN 100ms Transient, <15% Duty Cycle ....... 80V
LT3437EDD
LT3437IDD
SS
PARAMETER
SHDN Threshold
SHDN Input Current
Minimum Input Voltage (Note 3)
Supply Shutdown Current
Supply Sleep Current (Note 4)
Supply Quiescent Current
Minimum BIAS Voltage (Note 5)
, FB .......................................................... 6V
Tape and Reel: Add #TR
10-LEAD (3mm × 3mm) PLASTIC DFN
GND
W
MUST BE SOLDERED TO GND (PIN 4)
BST
C
SW
V
SS
IN
θ
EXPOSED PAD IS GND (PIN 11)
http://www.linear.com/leadfree/
JA
= 45°C/W, θ
1
2
3
4
5
DD PACKAGE
TOP VIEW
W W
11
JC(PAD)
U
= 10°C/W
DD PART MARKING
10
9
8
7
6
SHDN
SYNC
FB
V
BIAS
C
LBDK
LBDJ
W
U
CONDITIONS
SHDN = 12V
SHDN = 0V, BOOST = 0V, FB/PGFB = 0V
BIAS = 0V, FB = 1.35V
FB = 1.35V
BIAS = 0V, FB = 1.15V, V
BIAS = 5V, FB = 1.15V, V
J
= 25°C. V
The
U
●
IN
denotes the specifications which apply over the full operating
= 12V, SHDN = 12V, BIAS = 5V, FB = 1.25V,
Operating Junction Temperature Range
Storage Temperature Range ................. – 65°C to 125°C
ORDER PART NUMBER
LT3437EDD (Note 2) ....................... – 40°C to 125°C
LT3437IDD (Note 2) ........................ – 40°C to 125°C
LT3437EFE (Note 2) ........................ – 40°C to 125°C
LT3437IFE (Note 2) ......................... – 40°C to 125°C
C
C
= 0.8V, SYNC = 2V
= 0.8V, SYNC = 2V
LT3437EFE
LT3437IFE
BOOST
GND
MUST BE SOLDERED TO GND (PIN 8)
SW
V
NC
NC
NC
NC
IN
θ
EXPOSED PAD IS GND (PIN 17)
JA
16-LEAD PLASTIC TSSOP
= 45°C/W, θ
1
2
3
4
5
6
7
8
FE PACKAGE
●
●
●
●
●
TOP VIEW
17
JC(PAD)
1.15
MIN
= 10°C/W
FE PART MARKING
16
15
14
13
12
11
10
9
0.475
NC
SHDN
SYNC
NC
FB
V
BIAS
C
1.35
TYP
300
1.3
2.5
0.1
2.7
C
SS
3437EFE
3437IFE
25
5
MAX
1.45
3.15
500
30
50
3
2
2
1
UNITS
3437f
mA
mA
µA
µA
µA
µA
V
V
V