LT3434 LINER [Linear Technology], LT3434 Datasheet - Page 2

• Manufacturer Part Number: LT3434
• Description: High Voltage 3A, 200kHz Step-Down Switching Regulator with 100uA Quiescent Current
• Manufacturer: LINER [Linear Technology]

ABSOLUTE AXI U RATI GS
LT3434
(Note 1)
V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage ................................................. 68V
SYNC, C
Operating JunctionTemperature Range
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
temperature range, otherwise specifications are at T
C
SYMBOL
V
I
I
I
I
I
V
I
I
2
ELECTRICAL CHARACTERISTICS
SHDN
VINS
VIN
BIASS
BIAS
FB
PK
SHDN
REF
SS
IN
LT3434EFE (Note 2) ........................ – 40°C to 125°C
LT3434IFE (Note 2) ......................... – 40°C to 125°C
/SYNC = 0V unless otherwise noted.
, SHDN, BIAS ..................................................... 60V
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)
BIAS Sleep Current (Note 4)
BIAS Quiescent Current
Minimum Boost Voltage (Note 6)
Input Boost Current (Note 7)
Reference Voltage (V
FB Input Bias Current
EA Voltage Gain (Note 8)
EA Voltage g
EA Source Current
EA Sink Current
V
V
SW Current Limit
C
C
, PGFB, FB ................................................ 6V
to SW g
High Clamp
m
W
m
REF
W 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
BIAS = 5V, FB = 1.15V
SYNC = 3.3V
I
I
3.3V < V
dI(V
FB = 1.15V
FB = 1.35V
SW
SW
J
= 25°C. V
= 3A
= 3A
C
)= ±10µA
The
VIN
< 60V
●
IN
denotes the specifications which apply over the full operating
= 12V, SHDN = 12V, BIAS = 5V, FB/PGFB = 1.25V,
PACKAGE/ORDER I FOR ATIO
Consult LTC Marketing for parts specified with wider operating temperature ranges.
T
JMAX
BOOST
TCAP
GND
MUST BE SOLDERED TO GND (PIN 8)
= 125°C, θ
SW
SW
V
V
NC
IN
IN
EXPOSED PAD IS GND (PIN 17)
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
JA
FE PACKAGE
TOP VIEW
= 45°C/W, θ
17
JC(PAD)
●
●
●
●
●
●
●
●
16
15
14
13
12
11
10
9
= 10°C/W
PGOOD
SHDN
SYNC
PGFB
FB
V
BIAS
C
1.225
1.15
MIN
400
C
SS
2.1
20
15
3
U
1.25
TYP
170
110
700
900
650
1.3
2.4
0.1
3.2
2.6
2.7
1.8
2.2
4.7
40
45
65
75
30
5
6
ORDER PART
LT3434EFE
LT3434IFE
W
NUMBER
1.275
MAX
1.45
250
180
900
200
900
3.1
2.4
6.5
20
75
85
55
40
3
2
6
5
UNITS
µMho
U
3434f
A/V
V/V
mA
mA
mA
µA
µA
µA
µA
µA
µA
nA
µA
µA
V
V
V
V
V
V
A