LT1767EMS8-1.8#TR Linear Technology, LT1767EMS8-1.8#TR Datasheet - Page 2

• Manufacturer Part Number: LT1767EMS8-1.8#TR
• Description: IC SW REG STEP-DOWN 1.8V 8-MSOP
• Manufacturer: Linear Technology
• Type: Step-Down (Buck)r

Specifications of LT1767EMS8-1.8#TR

• Internal Switch(s): Yes
• Synchronous Rectifier: No
• Number Of Outputs: 1
• Voltage - Output: 1.8V
• Current - Output: 1.5A
• Frequency - Switching: 1.25MHz
• Voltage - Input: 3 ~ 25 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-MSOP, Micro8™, 8-uMAX, 8-uSOP,
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Power - Output: -
• Other names: LT1767EMS8-1.8TR; LT1767EMS81.8TR

LT1767/LT1767-1.8/
LT1767-2.5/LT1767-3.3/LT1767-5
ABSOLUTE
PACKAGE/ORDER
Consult LTC Marketing for parts specified with wider operating temperature ranges.
The
V
PARAMETER
Maximum Switch Current Limit
Oscillator Frequency
Switch On Voltage Drop
V
V
Shutdown Supply Current
Feedback Voltage
FB Input Current
ELECTRICAL CHARACTERISTICS
2
Input Voltage .......................................................... 25V
BOOST Pin Above SW ............................................ 20V
Max BOOST Pin Voltage .......................................... 35V
SHDN Pin ............................................................... 25V
FB Pin Voltage .......................................................... 6V
FB Pin Current ....................................................... 1mA
IN
IN
IN
Undervoltage Lockout
Supply Current
= 15V, V
BOOST
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
GND
SW
V
T
IN
JMAX
GROUND PIN CONNECTED
TO LARGE COPPER AREA
8-LEAD PLASTIC MSOP
1
2
3
4
C
= 125 C,
= 0.8V, Boost = V
MS8 PACKAGE
TOP VIEW
JA
W
MAXIMUM
= 110 C/W
8
7
6
5
SYNC
V
FB
SHDN
C
W W
IN
+ 5V, SHDN, SYNC and switch open unless otherwise noted.
INFORMATION
U
ORDER PART NUMBER
MS8 PART MARKING
CONDITION
(Note 3)
T
T
3.3V < V
I
V
V
3V < V
(Note 3)
LT1767 (Adj)
SW
LT1767EMS8
LT1767EMS8-1.8
LT1767EMS8-2.5
LT1767EMS8-3.3
LT1767EMS8-5
A
A
FB
SHDN
RATINGS
= 0 C to 125 C
= < 0 C
= –1.5A, 0 C T
= V
IN
= 0V, V
NOM
W
IN
< 25V, 0.4V < V
LTLS
LTWG
LTWD
LTWE
LTWF
< 25V
+ 17%
U
IN
= 25V, V
A
U
(Note 1)
C
125 C and –1.3A, T
SW
< 0.9V
= 0V
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
BOOST
LT1767E .......................................... – 40 C to 125 C
GND
V
SW
IN
LT1767 (Adj)
LT1767-1.8
LT1767-2.5
LT1767-3.3
LT1767-5
T
JMAX
8-LEAD PLASTIC MSOP
1
2
3
4
CONNECTED TO LARGE
COPPER AREA ON PCB
A
EXPOSED GND PAD
MS8E PACKAGE
< 0 C
= 125 C,
TOP VIEW
JA
= 40 C/W
8
7
6
5
SYNC
V
FB
SHDN
C
1.182
1.176
1.764
3.234
2.47
2.45
MIN
1.5
1.3
1.1
1.1
4.9
ORDER PART NUMBER
MS8E PART MARKING
LT1767EMS8E
LT1767EMS8E-1.8
LT1767EMS8E-2.5
LT1767EMS8E-3.3
LT1767EMS8E-5
– 0.25
1.25
TYP
330
2.6
1.2
1.8
2.5
3.3
2
1
6
5
LTZG
LTZH
LTZJ
LTZK
LTZL
1.218
1.224
1.836
3.366
MAX
– 0.5
2.73
2.55
400
500
A
1.4
1.5
1.3
5.1
20
45
3
3
= 25 C.
sn1767 1767fas
UNITS
MHz
MHz
mV
mV
mA
A
A
V
A
A
V
V
V
V
V
V
A