参数资料
型号: SC412AMLTRT
厂商: Semtech
文件页数: 3/22页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM 16-MLP
标准包装: 1
PWM 型: 控制器
输出数: 1
频率 - 最大: 325kHz
占空比: 90%
电源电压: 3 V ~ 25 V
降压:
升压:
回扫:
反相:
倍增器:
除法器:
Cuk:
隔离:
工作温度: -40°C ~ 85°C
封装/外壳: 16-MLP
包装: 标准包装
其它名称: SC412AMLDKR
NOT RECOMMENDED FOR NEW DESIGN
POWER MANAGEMENT
Electrical Characteristics (continued)
25°C
SC412A
-40° to 85°C
Parameter
Conditions
Units
Min
Typ
Max
Min
Max
Timing
On-Time
Continuous Mode Operation
V OUT = 1.1V
250
225
275
ns
Minimum On-Time
Minimum Off-Time
100
350
ns
Maximum Duty Cycle
V BAT < V OUT +0.2
V OUT < On-Time Threshold
85
80
%
Soft-Start
Soft-Start Time
I OUT = I LIM /2
1000
μ s
Analog Inputs/Outputs
VOUT Input Resistance
Current Sense
500
k Ω
Zero-Crossing
Detector Threshold
LX - GND
0
-7
+7
mV
Power Good
Power Good Threshold
Threshold Delay Time
(1)
1% HysteresisTypical
-12%
1.5
-9%
-15%
%
μ s
Leakage
Fault Protection
1
μ A
I LIM Source Current
I LIM Comparator Offset
10
0
9
-10
11
+10
μ A
mV
Current Limit (Negative)
Output Under-Voltage Fault
Steady-State
Over-Voltage Fault
Over-Voltage Fault Delay (1)
VCCA Under-Voltage
(UVLO)
LX - GND
FB with Respect to REF
FB with Respect to REF
FB Forced 50mV Above
Over-Voltage Fault Threshold
Conditions = Falling Edge
(Hysteresis 100mV)
80
-30
20
1.5
4
60
-35
+17
3.7
100
-25
+23
4.35
mV
%
%
μ s
V
Over-Temperature
Shutdown (1)
Logic Inputs/Outputs
160
°C
Logic Input Hgh Voltage
Logic Input Low Voltage
EN
EN
1.2
0.4
V
V
? 2006 Semtech Corp.
3
www.semtech.com
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