参数资料
型号: SC493ULTRT
厂商: Semtech
文件页数: 4/28页
文件大小: 0K
描述: IC REG CTRLR BUCK PWM MLPQ-20
标准包装: 1
系列: EcoSpeed®, SmartDrive™
PWM 型: 控制器
输出数: 1
频率 - 最大: 1MHz
电源电压: 3 V ~ 5.5 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: 20-MLPQ
包装: 标准包装
其它名称: SC493ULTRTDKR
SC493
Electrical Characteristics (continued)
Parameter
Symbol
Condition
Min
Typ
Max
Units
Startup
Initialization Time (2)
Soft-Start Time Accuracy
Power-on Delay Time Accuracy
t INIT
t SS
t DLY
Delay before the I 2 C bus and the Power-on
delay ramp are enabled
-20
-20
1
+20
+20
ms
%
%
Powersave
Zero-Crossing Detector Threshold
UPSV mode Frequency
VT ZC
f UPSV
V LX - PGND
UPSV enabled, UPSV1 = 1, UPSV0 = 1
-3
20
0
25
+3
30
mV
kHz
Power Good
PGD Rising Threshold
PGD Falling Threshold
PGD Leakage
PGD Output Low Voltage
VT PGD_RISE
VT PGD_FALL
ILEAK PGD
V PGD_LOW
FB with respect to set point, under voltage,
and over voltage
FB with respect to set point, under voltage,
and over voltage
Device operating, no fault, V PGD =V VDD(1)
I PGD =3mA
90/120
80/110
1
0.4
%
%
μA
V
Fault Protection
I LIM Source Current
I LIM Temperature Coefficient
I LIM Comparator Offset
Output Under-Voltage Fault
Output Over-Voltage Fault
Over-Voltage Fault Delay (2)
Smart Power-save Protection Threshold (2)
Over-Temperature Shutdown
Over-Temperature Hysteresis
I LIM
TC ILIM
VOFF ILIM
VT UV
VT OV
t DLY_OV
VT SMRTPSV
T OT
T OT_HYS
FB with respect to set point,
8 consecutive switching cycles
FB with respect to set point rising/ falling
FB with respect to set point rising
Rising T J
9
-10
10
3000
0
70
120
5
110
160
10
11
+10
μA
ppm
mV
%
%
μs
%
°C
°C
Analog Inputs and Outputs
Controller enabled
500k
V OUT Input Resistance
R VOUT
Controller disabled/internal load enabled
10
?
4
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