参数资料
型号: LTC3615EUF#PBF
厂商: Linear Technology
文件页数: 23/32页
文件大小: 0K
描述: IC REG BUCK SYNC ADJ 3A DL 24QFN
标准包装: 91
类型: 降压(降压)
输出类型: 可调式
输出数: 2
输出电压: 0.6 V ~ 5.5 V
输入电压: 2.25 V ~ 5.5 V
PWM 型: 电流模式,混合
频率 - 开关: 400kHz ~ 4MHz
电流 - 输出: 3A
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: 24-WFQFN 裸露焊盘
包装: 管件
供应商设备封装: 24-QFN 裸露焊盘(4x4)
LTC3615/LTC3615-1
APPLICATIONS INFORMATION
0V
PIN VOLTAGE 0.1V
ExternalReferenceInput(DDRMode)
If SRLIM is tied to SV IN , the TRACK/SS pin can be used
as an external reference input between 0.3V and 0.5V, if
desired (see Figure 13).
V FB PIN 0.6V
VOLTAGE
0.6V
TRACK/SS
0V
In DDR mode, the maximum slew rate is selected. If V TRACK/
SS is within 0.3V and 0.5V, the PGOOD function is enabled.
If V TRACK/SS is less than 0.3V, the output current foldback
is disabled and the PGOOD pin is always pulled down.
RUN PIN
VOLTAGE
V IN
0V
SV IN PIN
VOLTAGE
V IN
0V
TIME
SHUTDOWN SOFT-START
STATE STATE
t SS > 1ms
RUN STATE
REDUCED
SWITCHING
FREQUENCY
DOWN- UP-
TRACKING TRACKING
STATE STATE
RUN STATE
3615 F13
Figure 13. Tracking if V SRLIM Is Low
0.45V
0V
PIN VOLTAGE 0.1V
V FB PIN 0.3V
VOLTAGE
0.45V
TRACK/SS 0.3V
0V
EXTERNAL
VOLTAGE
REFERENCE 0.45V
RUN PIN
VOLTAGE
V IN
0V
SV IN PIN
VOLTAGE
V IN
0V
TIME
SHUTDOWN SOFT-START
STATE STATE
t SS > 1ms
RUN STATE
REDUCED
SWITCHING
FREQUENCY
DOWN- UP-
TRACKING TRACKING
STATE STATE
RUN STATE
3615 F14
Figure 14. Tracking if V SRLIM Is Tied to SV IN
23
For more information www.linear.com/LTC3615
3615fb
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