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参数资料
| 型号： | LT1767EMS8E-5 |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 稳压器 |
| 英文描述： | RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS |
| 中文描述： | 3 A SWITCHING REGULATOR, 1500 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封装： | PLASTIC, MSOP-8 |
| 文件页数： | 12/16页 |
| 文件大小： | 242K |
| 代理商： | LT1767EMS8E-5 |
12
LT1767/LT1767-1.8/
LT1767-2.5/LT1767-3.3/LT1767-5
sn1767 1767fas
APPLICATIO
S I
N
FOR
ATIO
U
W
U
Total power dissipation is 0.34 + 0.05 + 0.01 = 0.4W.
Thermal resistance for LT1767 package is influenced by
the presence of internal or backside planes. With a full
plane under the package, thermal resistance for the
exposed pad package will be about 40
°
C/W. No plane will
increase resistance to about 150
°
C/W. To calculate die
temperature, use the appropriate thermal resistance
number and add in worst-case ambient temperature:
T
J
= T
A
+
θ
JA
(P
TOT
)
When estimating ambient, remember the nearby catch
diode and inductor will also be dissipating power.
=
( )
P
V
V
V
I
V
DIODE
F
IN
OUT
LOAD
IN
(
)(
)
V
F
= Forward voltage of diode (assume 0.5V at 1A)
DIODE
=
( )
12
P
W
(
)( )
=
0 5 12 5 1
.
0 29
.
Figure 6. Typical Application and Suggested Layout (Topside Only Shown)
BOOST
LT1767-2.5
V
IN
OUTPUT
2.5V
1.2A
V
IN
12V
1767 F06a
C2
0.1
μ
F
C
1.5nF
R
C
4.7k
D1
UPS120
C1
10
μ
F
CERAMIC
C3
2.2
μ
F
CERAMIC
D2
CMDSH-3
L1
5
μ
H
V
SW
FB
SHDN
SYNC
OPEN
OR
HIGH
= ON
GND
V
C
V
IN
GND
R
C
C
C
V
OUT
C1
C3
C2
L1
1767 F06
SYNC
SHDN
KELVIN SENSE
V
OUT
CONNECT TO
GROUND PLANE
MINIMIZE LT1767,
C3, D1 LOOP
KEEP FB AND V
C
COMPONENTS
AWAY FROM
HIGH INPUT
COMPONENTS
PLACE FEEDTHROUGHS
AROUND GROUND PIN
AND UNDER GROUND PAD
FOR GOOD THERMAL
CONDUCTIVITY
D2
D1
GND
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相关代理商/技术参数 |
参数描述 |
|---|---|
| LT1767EMS8E-5#PBF | 功能描述:IC REG BUCK 5V 1.5A 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:250 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V 输入电压:2.05 V ~ 6 V PWM 型:电压模式 频率 - 开关:2MHz 电流 - 输出:500mA 同步整流器:是 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-UFDFN 包装:带卷 (TR) 供应商设备封装:6-SON（1.45x1） 产品目录页面:1032 (CN2011-ZH PDF) 其它名称:296-25628-2 |
| LT1767EMS8E-5#PBF | 制造商:Linear Technology 功能描述:DC/DC Converter IC 制造商:Linear Technology 功能描述:IC, STEP-DOWN REGULATOR, MSOP-8 |
| LT1767EMS8E-5#TR | 功能描述:IC REG BUCK 5V 1.5A 8MSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT1767EMS8E-5#TRPBF | 功能描述:IC REG BUCK 5V 1.5A 8MSOP RoHS:是 类别:集成电路 (IC) >> PMIC - 稳压器 - DC DC 开关稳压器 系列:- 标准包装:2,500 系列:- 类型:降压（降压） 输出类型:固定 输出数:1 输出电压:1.2V，1.5V，1.8V，2.5V 输入电压:2.7 V ~ 20 V PWM 型:- 频率 - 开关:- 电流 - 输出:50mA 同步整流器:是 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:10-TFSOP，10-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:带卷 (TR) 供应商设备封装:10-MSOP 裸露焊盘 |
| LT1767EMS8E-5PBF | 制造商:Linear Technology 功能描述:Sw. Regulator Step-Dn 1.5A 1.25MHz MSOP8 |
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