参数资料
型号: SC4525DSETRT
厂商: Semtech
文件页数: 4/21页
文件大小: 0K
描述: IC REG BUCK ADJ 3A 8SOIC
标准包装: 1
类型: 降压(降压)
输出类型: 可调式
输出数: 1
输出电压: 1 V ~ 16.74 V
输入电压: 3 V ~ 18 V
PWM 型: 电流模式
频率 - 开关: 65kHz ~ 350kHz
电流 - 输出: 3A
同步整流器:
工作温度: -40°C ~ 105°C
安装类型: 表面贴装
封装/外壳: 8-SOIC(0.154",3.90mm Width)裸露焊盘
包装: 标准包装
供应商设备封装: 8-SOIC-EP
其它名称: SC4525DSEDKR
SC4525D
Electrical Characteristics (Cont.)
Unless otherwise noted, V IN =  2V, V BST =  5V, V SS = 2.2V, -40°C < T A = T J <  25°C, R SET = 60.4kΩ.
Parameter
Conditions
Min
Typ
Max
Units
Minimum Switch On-time
 50
ns
Minimum Switch Off-time
Switch Leakage Current
 00
 50
 0
ns
μA
Minimum Bootstrap Voltage
BST Pin Current
I SW = -3.9A
I SW = -3.9A
 .8
 00
2.3
 50
V
mA
Oscillator
Switching Frequency
Foldback Frequency
R SET = 60.4kΩ
R SET = 60.4kΩ, V FB = 0
275
35
350
65
425
 00
kHz
kHz
Soft Start and Overload Protection
SS/EN Shutdown Threshold
0.2
0.3
0.4
V
SS/EN Switching Threshold
Soft-start Charging Current
V FB = 0 V
V SS/EN = 0 V
V SS/EN =  .5 V
0.95
 .6
 .2
 .9
2.4
 .4
3.2
V
μA
Soft-start Discharging Current
 .5
μA
Hiccup Arming SS/EN Voltage
Hiccup SS/EN Overload Threshold
V SS/EN Rising
V SS/EN Falling
2. 5
 .9
V
V
Hiccup Retry SS/EN Voltage
V SS/EN Falling
0.6
 .0
 .2
V
Over Temperature Protection
Thermal Shutdown Temperature
Thermal Shutdown Hysteresis
 65
 0
°C
°C
Note  : Switch current limit does not vary with duty cycle.
4
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