参数资料
型号: LT3686HDD#TRPBF
厂商: Linear Technology
文件页数: 24/28页
文件大小: 0K
描述: IC REG BUCK ADJ 1.2A 10DFN
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: 0.8 V ~ 30 V
输入电压: 3.6 V ~ 37 V
PWM 型: 电流模式
频率 - 开关: 300kHz ~ 2.5MHz
电流 - 输出: 1.2A
同步整流器:
工作温度: -40°C ~ 150°C
安装类型: 表面贴装
封装/外壳: 10-WFDFN 裸露焊盘
包装: 带卷 (TR)
供应商设备封装: 10-DFN(3x3)
LT3686
APPLICATIONS INFORMATION
junction temperature. The die temperature is calculated by
multiplying the LT3686 power dissipation by the thermal
resistance from junction to ambient. Power dissipation
within the LT3686 can be estimated by calculating the total
power loss from an efficiency measurement and subtract-
ing the catch diode loss. The resulting temperature rise at
full load is nearly independent of input voltage. Thermal
resistance depends on the layout of the circuit board, but
43°C/W is typical for the (3mm × 3mm) DFN package.
Outputs Greater Than 19V
Note that for outputs above 19V, the input voltage range
will be limited by the maximum rating of the BOOST pin.
The sum of input and output voltages cannot exceed the
BOOST pin’s 55V rating. The 25V circuit (Figure 18) shows
how to overcome this limitation using an additional Zener
diode.
Other Linear Technology Publications
Application Notes 19, 35 and 44 contain more detailed
descriptions and design information for Buck regulators
and other switching regulators. The LT1376 data sheet
has a more extensive discussion of output ripple, loop
compensation and stability testing. Design Note 100
shows how to generate a bipolar output supply using a
buck regulator.
V IN
30V TO 36V
V IN
LT3686
BD
15V
0.22μF
2.2μF
EN/UVLO
BOOST
0.22μF
MODE
SS
SW
100μH
V OUT
500mA
100nF
RT
61.9k
GND
DA
FB
10k
301k
10μF
3686 F18
Figure 18. 25V Step-Down Converter
3686fc
24
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相关代理商/技术参数
参数描述
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LT3686IDD#PBF 功能描述:IC REG BUCK ADJ 1.2A 10DFN 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
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