参数资料
型号: LT1767EMS8#TRPBF
厂商: Linear Technology
文件页数: 2/16页
文件大小: 0K
描述: IC REG BUCK ADJ 1.5A 8MSOP
标准包装: 2,500
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1.2 V ~ 20 V
输入电压: 3 V ~ 25 V
PWM 型: 电流模式
频率 - 开关: 1.25MHz
电流 - 输出: 1.5A
同步整流器:
工作温度: -40°C ~ 125°C
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
包装: 带卷 (TR)
供应商设备封装: 8-MSOP
LT1767/LT1767-1.8/
LT1767-2.5/LT1767-3.3/LT1767-5
ABSOLUTE M AXI M U M RATINGS
(Note 1)
Input Voltage .......................................................... 25V
BOOST Pin Above SW ............................................ 20V
Max BOOST Pin Voltage .......................................... 35V
SHDN Pin ............................................................... 25V
FB Pin Voltage .......................................................... 6V
FB Pin Current ....................................................... 1mA
PACKAGE/ORDER I N FOR M ATIO N
ORDER PART NUMBER
SYNC Pin Current .................................................. 1mA
Operating Junction Temperature Range (Note 2)
LT1767E .......................................... – 40 ° C to 125 ° C
Storage Temperature Range ................ – 65 ° C to 150 ° C
Lead Temperature (Soldering, 10 sec)................. 300 ° C
ORDER PART NUMBER
TOP VIEW
LT1767EMS8
TOP VIEW
LT1767EMS8E
BOOST
V IN
SW
GND
1
2
3
4
8
7
6
5
SYNC
V C
FB
SHDN
LT1767EMS8-1.8
LT1767EMS8-2.5
LT1767EMS8-3.3
BOOST
V IN
SW
GND
1
2
3
4
8
7
6
5
SYNC
V C
FB
SHDN
LT1767EMS8E-1.8
LT1767EMS8E-2.5
LT1767EMS8E-3.3
MS8 PACKAGE
8-LEAD PLASTIC MSOP
T JMAX = 125 ° C, θ JA = 110 ° C/W
GROUND PIN CONNECTED
TO LARGE COPPER AREA
LT1767EMS8-5
MS8 PART MARKING
LTLS
LTWG
LTWD
LTWE
LTWF
MS8E PACKAGE
8-LEAD PLASTIC MSOP
T JMAX = 125 ° C, θ JA = 40 ° C/W
EXPOSED GND PAD
CONNECTED TO LARGE
COPPER AREA ON PCB
LT1767EMS8E-5
MS8E PART MARKING
LTZG
LTZH
LTZJ
LTZK
LTZL
Consult LTC Marketing for parts specified with wider operating temperature ranges.
ELECTRICAL CHARACTERISTICS
The q denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T A = 25 ° C.
V IN = 15V, V C = 0.8V, Boost = V IN + 5V, SHDN, SYNC and switch open unless otherwise noted.
PARAMETER
Maximum Switch Current Limit
Oscillator Frequency
Switch On Voltage Drop
CONDITION
T A = 0 ° C to 125 ° C
T A = < 0 ° C
3.3V < V IN < 25V
I SW = –1.5A, 0 ° C ≤ T A ≤ 125 ° C and –1.3A, T A < 0 ° C
q
MIN
1.5
1.3
1.1
1.1
TYP
2
1.25
330
MAX
3
3
1.4
1.5
400
UNITS
A
A
MHz
MHz
mV
q
500
mV
V IN Undervoltage Lockout
V IN Supply Current
Shutdown Supply Current
Feedback Voltage
FB Input Current
(Note 3)
V FB = V NOM + 17%
V SHDN = 0V, V IN = 25V, V SW = 0V
3V < V IN < 25V, 0.4V < V C < 0.9V
(Note 3)
LT1767 (Adj)
LT1767 (Adj)
LT1767-1.8
LT1767-2.5
LT1767-3.3
LT1767-5
q
q
q
q
q
q
q
q
q
2.47
1.182
1.176
1.764
2.45
3.234
4.9
2.6
1
6
1.2
1.8
2.5
3.3
5
– 0.25
2.73
1.3
20
45
1.218
1.224
1.836
2.55
3.366
5.1
– 0.5
V
mA
μ A
μ A
V
V
V
V
V
V
μ A
sn1767 1767fas
2
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