LT1956IFE#PBF Linear Technology, LT1956IFE#PBF Datasheet - Page 2

• Manufacturer Part Number: LT1956IFE#PBF
• Description: IC REG SW 1.5A HV STPDWN 16TSSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1956IFE#PBF

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.2 ~ 45 V
• Current - Output: 1.5A
• Frequency - Switching: 500kHz
• Voltage - Input: 5.5 ~ 60 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP Exposed Pad, 16-eTSSOP, 16-HTSSOP
• Dc To Dc Converter Type: Step Down
• Pin Count: 16
• Input Voltage: 60V
• Output Voltage: 1.2 to 45V
• Switching Freq: 540KHz
• Output Current: 3A
• Package Type: TSSOP EP
• Output Type: Adjustable
• Switching Regulator: Yes
• Line Regulation: 0.15%/V
• Mounting: Surface Mount
• Input Voltage (min): 5.5V
• Operating Temperature Classification: Automotive
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Power - Output: -
• Lead Free Status / Rohs Status: Compliant

PACKAGE/ORDER I FOR ATIO
ELECTRICAL CHARACTERISTICS
LT1956/LT1956-5
ABSOLUTE AXI U RATI GS
Input Voltage (V
BOOST Pin Above SW ............................................ 35V
BOOST Pin Voltage ................................................. 68V
SYNC, SENSE Voltage (LT1956-5) ........................... 7V
SHDN Voltage ........................................................... 6V
BIAS Pin Voltage .................................................... 30V
FB Pin Voltage/Current (LT1956) ................... 3.5V/2mA
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
V
PARAMETER
Reference Voltage (LT1956)
SENSE Voltage (LT1956-5)
SENSE Pin Resistance (LT1956-5)
FB Input Bias Current (LT1956)
Error Amp Voltage Gain
Error Amp g
V
EA Source Current
EA Sink Current
V
V
2
C
C
C
IN
to Switch g
Switching Threshold
High Clamp
T
JMAX
= 15V, V
BOOST
EXPOSED BACKSIDE MUST BE SOLDERED
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
GND
GND
= 125 C,
SW
V
NC
NC
NC
IN
m
16-LEAD PLASTIC TSSOP
C
1
2
3
4
5
6
7
8
m
TO GROUND PLANE
= 1.5V, SHDN = 1V, Boost o/c, SW o/c, unless otherwise noted.
JA
FE PACKAGE
= 45 C/ W,
TOP VIEW
IN
) ................................................. 60V
W
JC
(PAD) = 10 C/ W
16
15
14
13
12
11
10
9
GND
SHDN
SYNC
NC
FB/SENSE
V
BIAS
GND
W W
C
U
FE PART MARKING
ORDER PART
LT1956EFE
LT1956IFE
LT1956EFE-5
LT1956IFE-5
W
1956EFE
1956IFE
1956EFE-5
1956IFE-5
CONDITIONS
5.5V V
V
5.5V V
V
(Notes 2, 9)
dl (V
FB = 1V or V
FB = 1.4V or V
Duty Cycle = 0
SHDN = 1V
NUMBER
OL
OL
U
+ 0.2 V
+ 0.2 V
C
) = 10 A (Note 9)
IN
IN
SENSE
60V
60V
C
C
U
SENSE
(Note 1)
V
V
OH
OH
= 4.1V
= 5.7V
– 0.2
– 0.2
Operating Junction Temperature Range
Storage Temperature Range ................ – 65 C to 150 C
Lead Temperature (Soldering, 10 sec)................. 300 C
T
JMAX
BOOST
LT1956EFE/LT1956EFE-5/LT1956EGN/LT1956EGN-5
(Notes 8, 10) ..................................... – 40 C to 125 C
LT1956IFE/LT1956IFE-5/LT1956IGN/LT1956IGN-5
(Notes 8, 10) ..................................... – 40 C to 125 C
GND
GND
SW
= 125 C,
V
NC
NC
NC
IN
FOUR CORNER PINS SOLDERED
16-LEAD PLASTIC SSOP
1
2
3
4
5
6
7
8
TO GROUND PLANE
JA
GN PACKAGE
TOP VIEW
= 85 C/ W,
JC
16
15
14
13
12
11
10
(PIN 8) = 25 C/ W
9
GND
SHDN
SYNC
NC
FB/SENSE
V
BIAS
GND
C
1.204
1.195
1500
1000
MIN
4.94
4.90
200
125
100
9.5
GN PART MARKING
1.219
2000
13.8
TYP
400
225
225
0.5
1.7
0.9
2.1
5
ORDER PART
LT1956EGN
LT1956IGN
LT1956EGN-5
LT1956IGN-5
NUMBER
1956
1956I
19565
1956I5
J
1.234
1.243
3000
3200
= 25 C.
MAX
5.06
5.10
400
450
1.5
19
UNITS
Mho
Mho
1956f
V/V
A/V
k
V
V
V
V
A
A
A
V
V