LT3436 LINER [Linear Technology], LT3436 Datasheet - Page 2

• Manufacturer Part Number: LT3436
• Description: 3A, 800kHz Step-Up Switching Regulator
• Manufacturer: LINER [Linear Technology]

LT3436
ABSOLUTE
(Note 1)
Input Voltage .......................................................... 25V
Switch Voltage ......................................................... 35V
SHDN Pin ............................................................... 25V
FB Pin Current ....................................................... 1mA
SYNC Pin Current .................................................. 1mA
Operating Junction Temperature Range (Note 2)
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PARAMETER
Recommended Operating Voltage
Maximum Switch Current Limit
Oscillator Frequency
Switch On Voltage Drop
V
V
V
Shutdown Supply Current
Feedback Voltage
FB Input Current
FB to V
FB to V
V
V
V
V
V
Maximum Switch Duty Cycle
SHDN Threshold Voltage
SHDN Input Current (Shutting Down)
SHDN Threshold Current Hysteresis
SYNC Threshold Voltage
SYNC Input Frequency
SYNC Pin Resistance
ELECTRICAL CHARACTERISTICS
range, otherwise specifications are at T
2
IN
IN
IN
C
C
C
C
C
Pin Source Current
Pin Sink Current
Pin to Switch Current Transconductance
Pin 3A I
Pin Minimum Switching Threshold
LT3436E .......................................... – 40°C to 125°C
Undervoltage Lockout
Supply Current
Supply Current/I
C
C
Voltage Gain
Transconductance
SW
Threshold
SW
W
MAXIMUM
W W
A
CONDITION
(Note 3)
3.3V < V
I
I
I
V
3V < V
0.4V < V
∆I
V
V
Duty Cycle = 0%
V
V
SHDN = 60mV Above Threshold
SHDN = 100mV Below Threshold
I
SW
SW
SW
SYNC
= 25°C. V
SHDN
FB
FB
C
C
RATINGS
VC
= 1.2V, I
= 1.2V, I
= 3A
= 0A
= 3A
= 1V
= 1.4V
= ±10µA
= 1mA
IN
= 0V, V
IN
C
< 25V, 0.4V < V
< 0.9V
< 25V
SW
SW
U
IN
IN
= 15V, V
= 350mA
= 1A
= 25V, V
The
C
C
●
SW
= 0.8V, SHDN, SYNC and switch open unless otherwise noted.
< 0.9V
denotes the specifications which apply over the full operating temperature
= 25V
PACKAGE/ORDER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
GND
GND
GND
GND
SW
SW
V
NC
T
IN
EXPOSED PAD IS GND (PIN 17),
JMAX
MUST BE SOLDERED TO PCB
16-LEAD PLASTIC TSSOP
1
2
3
4
5
6
7
8
θ
= 125°C, θ
JC(PAD)
FE PACKAGE
TOP VIEW
17
= 10°C/W
JA
= 45°C/W,
16
15
14
13
12
11
10
9
GND
NC
SYNC
V
FB
SHDN
NC
GND
C
●
●
●
●
●
●
●
●
●
●
●
●
●
●
●
1.182
1.176
2.47
1.28
MIN
– 85
640
150
500
70
85
80
– 7
3
3
0
4
1
INFORMATION
U
ORDER PART NUMBER
FE PART MARKING
– 120
– 0.2
1.35
TYP
–10
800
330
350
850
110
2.6
1.2
4.8
0.3
0.9
1.5
15
11
90
20
LT3436EFE
4
1
7
3436EFE
W
1.218
1.224
– 165
MAX
1300
2.73
– 0.4
1.42
960
550
165
–13
1.3
2.2
1.4
25
25
45
10
6
UNITS
µMho
mA/A
U
3436fa
MHz
kHz
A/V
mV
mA
kΩ
µA
µA
µA
µA
µA
µA
µA
%
%
V
A
V
V
V
V
V
V
V