LT1956 데이터 시트보기 (PDF) - Linear Technology
부품명
상세내역
제조사
LT1956 Datasheet PDF : 28 Pages
| |||
LT1956/LT1956-5
ABSOLUTE AXI U RATI GS (Note 1)
Input Voltage (VIN) ................................................. 60V
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
Operating Junction Temperature Range
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
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
UW U
PACKAGE/ORDER I FOR ATIO
TOP VIEW
GND 1
SW 2
NC 3
VIN 4
NC 5
BOOST 6
NC 7
GND 8
16 GND
15 SHDN
14 SYNC
13 NC
12 FB/SENSE
11 VC
10 BIAS
9 GND
FE PACKAGE
16-LEAD PLASTIC TSSOP
TJMAX = 125°C, θJA = 45°C/ W, θJC (PAD) = 10°C/ W
EXPOSED BACKSIDE MUST BE SOLDERED
TO GROUND PLANE
ORDER PART
NUMBER
LT1956EFE
LT1956IFE
LT1956EFE-5
LT1956IFE-5
FE PART MARKING
1956EFE
1956IFE
1956EFE-5
1956IFE-5
Consult LTC Marketing for parts specified with wider operating temperature ranges.
GND 1
SW 2
NC 3
VIN 4
NC 5
BOOST 6
NC 7
GND 8
TOP VIEW
16 GND
15 SHDN
14 SYNC
13 NC
12 FB/SENSE
11 VC
10 BIAS
9 GND
GN PACKAGE
16-LEAD PLASTIC SSOP
TJMAX = 125°C, θJA = 85°C/ W, θJC (PIN 8) = 25°C/ W
FOUR CORNER PINS SOLDERED
TO GROUND PLANE
ORDER PART
NUMBER
LT1956EGN
LT1956IGN
LT1956EGN-5
LT1956IGN-5
GN PART MARKING
1956
1956I
19565
1956I5
ELECTRICAL CHARACTERISTICS
The q denotes specifications which apply over the full operating temperature range, otherwise specifications are at TJ = 25°C.
VIN = 15V, VC = 1.5V, SHDN = 1V, Boost o/c, SW o/c, unless otherwise noted.
PARAMETER
CONDITIONS
MIN TYP MAX
Reference Voltage (LT1956)
SENSE Voltage (LT1956-5)
SENSE Pin Resistance (LT1956-5)
5.5V ≤ VIN ≤ 60V
VOL + 0.2 ≤ VC ≤ VOH – 0.2
5.5V ≤ VIN ≤ 60V
VOL + 0.2 ≤ VC ≤ VOH – 0.2
1.204 1.219 1.234
q 1.195
1.243
4.94 5 5.06
q 4.90
5.10
9.5 13.8 19
FB Input Bias Current (LT1956)
q
0.5 1.5
Error Amp Voltage Gain
(Notes 2, 9)
200 400
Error Amp gm
dl (VC) = ±10µA (Note 9)
1500 2000 3000
q 1000
3200
VC to Switch gm
EA Source Current
EA Sink Current
VC Switching Threshold
VC High Clamp
FB = 1V or VSENSE = 4.1V
FB = 1.4V or VSENSE = 5.7V
Duty Cycle = 0
SHDN = 1V
1.7
q 125 225 400
q 100 225 450
0.9
2.1
UNITS
V
V
V
V
kΩ
µA
V/V
µMho
µMho
A/V
µA
µA
V
V
1956f
2
Share Link: 