LT1767EMS8 Ver la hoja de datos (PDF) - Linear Technology
Número de pieza
componentes Descripción
Fabricante
LT1767EMS8 Datasheet PDF : 16 Pages
| |||
LT1767/LT1767-1.8/
LT1767-2.5/LT1767-3.3/LT1767-5
ABSOLUTE MAXIMUM RATINGS (Note 1)
Input Voltage .......................................................... 25V SYNC Pin Current .................................................. 1mA
BOOST Pin Above SW ............................................ 20V Operating Junction Temperature Range (Note 2)
Max BOOST Pin Voltage .......................................... 35V
SHDN Pin ............................................................... 25V
FB Pin Voltage .......................................................... 6V
FB Pin Current ....................................................... 1mA
LT1767E .......................................... – 40°C to 125°C
Storage Temperature Range ................ – 65°C to 150°C
Lead Temperature (Soldering, 10 sec)................. 300°C
PACKAGE/ORDER INFORMATION
ORDER PART NUMBER
TOP VIEW
BOOST 1
VIN 2
SW 3
GND 4
8 SYNC
7 VC
6 FB
5 SHDN
MS8 PACKAGE
8-LEAD PLASTIC MSOP
LT1767EMS8
LT1767EMS8-1.8
LT1767EMS8-2.5
LT1767EMS8-3.3
LT1767EMS8-5
TJMAX = 125°C, θJA = 110°C/W
MS8 PART MARKING
GROUND PIN CONNECTED
TO LARGE COPPER AREA
LTLS
LTWG
LTWD
LTWE
LTWF
Consult LTC Marketing for parts specified with wider operating temperature ranges.
TOP VIEW
BOOST 1
VIN 2
SW 3
GND 4
8 SYNC
7 VC
6 FB
5 SHDN
MS8E PACKAGE
8-LEAD PLASTIC MSOP
TJMAX = 125°C, θJA = 40°C/W
EXPOSED GND PAD
CONNECTED TO LARGE
COPPER AREA ON PCB
ORDER PART NUMBER
LT1767EMS8E
LT1767EMS8E-1.8
LT1767EMS8E-2.5
LT1767EMS8E-3.3
LT1767EMS8E-5
MS8E PART MARKING
LTZG
LTZH
LTZJ
LTZK
LTZL
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at TA = 25°C.
VIN = 15V, VC = 0.8V, Boost = VIN + 5V, SHDN, SYNC and switch open unless otherwise noted.
PARAMETER
CONDITION
MIN TYP MAX UNITS
Maximum Switch Current Limit
TA = 0°C to 125°C
TA = < 0°C
1.5
2
3
A
1.3
3
A
Oscillator Frequency
3.3V < VIN < 25V
1.1 1.25 1.4
MHz
q 1.1
1.5
MHz
Switch On Voltage Drop
ISW = –1.5A, 0°C ≤ TA ≤ 125°C and –1.3A, TA < 0°C
q
330 400
mV
500
mV
VIN Undervoltage Lockout
VIN Supply Current
Shutdown Supply Current
(Note 3)
VFB = VNOM + 17%
VSHDN = 0V, VIN = 25V, VSW = 0V
q 2.47
2.6
2.73
V
q
1
1.3
mA
6
20
µA
q
45
µA
Feedback Voltage
3V < VIN < 25V, 0.4V < VC < 0.9V
(Note 3)
LT1767 (Adj)
1.182 1.2 1.218
V
q 1.176
1.224
V
LT1767-1.8
q 1.764 1.8 1.836
V
LT1767-2.5
q 2.45
2.5
2.55
V
LT1767-3.3
q 3.234 3.3 3.366
V
LT1767-5
q 4.9
5
5.1
V
FB Input Current
LT1767 (Adj)
q
– 0.25 – 0.5
µA
sn1767 1767fas
2
Share Link: 