參數(shù)資料
型號: SC412AEVB
廠商: Semtech Corporation
英文描述: Synchronous Buck Controller
中文描述: 同步降壓控制器
文件頁數(shù): 4/22頁
文件大小: 639K
代理商: SC412AEVB
Parameter
Conditions
25°C
-40° to 85°C
Units
Min
Typ
Max
Min
Max
Logic Inputs/Outputs
(continued)
EN Input Bias Current
EN = V
CC
or R
TN
-1
+1
μ
A
FB Input Bias Current
FB = V
CC
or R
TN
-1
+1
μ
A
Power Good Output
Low Voltage
R
PWRGD
= 10k
Ω
to V
CC
0.4
V
Gate Drivers
Shoot-Through
Protection Delay
(1)
DH or DL Rising
30
ns
DL Pull-Down Resistance
DL Low
0.8
1.6
Ω
DL Sink Current
V
DL
= 2.5V
3.1
A
DL Pull-Up Resistance
DL High
2
4
Ω
DL Source Current
V
DL
= 2.5V
1.3
A
DH Pull-Down Resistance
DH Low, B
ST
- L
X
= 5V
2
4
Ω
DH Pull-Up Resistance
(2)
DH High, B
ST
- L
X
= 5V
2
4
Ω
DH Sink/Source Current
V
DH
= 2.5V
1.3
A
Notes:
(1) Guaranteed by design.
(2) Semtech’s SmartDriver FET drive
fi
rst pulls DH high with a pull-up resistance of 10
Ω
(typical) until LX = 1.5V (typical). At this point,
an additional pull-up device is activated, reducing the resistance to 2
Ω
(typical). This negates the need for an external gate or boost
resistor.
4
2006 Semtech Corp.
www.semtech.com
SC412A
POWER MANAGEMENT
Electrical Characteristics
(continued)
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