参数资料
| 型号： | SC198MLTRT |
| 厂商： | Semtech |
| 文件页数： | 2/16页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC PROG .6A 20MLPQ |
| 标准包装： | 1 |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 2 |
| 输出电压： | 可编程 |
| 输入电压： | 2.7 V ~ 5.5 V |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 600mA |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-MLPQ |
| 包装： | 标准包装 |
| 供应商设备封装： | 20-MLPQ（4x4） |
| 产品目录页面： | 1358 (CN2011-ZH PDF) |
| 其它名称： | SC198MLDKR |
NOT RECOMMENDED FOR NEW DESIGN
SC198
POWER MANAGEMENT
Absolute Maximum Ratings
Exceeding the speci ? cations below may result in permanent damage to the device or device malfunction. Operation outside of the parameters speci ? ed in the
Electrical Characteristics section is not recommended.
Parameter
VIN
EN, SYNC Input
LXA and LXB Voltages
VOUT
CTLA0, CTLA1, CTLA2, CTLB0, CTLB1 & CTLB2 Voltages
Output Short Circuit to GND
LXA and LXB Currents
Thermal Impedance (Junction to Ambient) (1)
Operating Ambient Temperature
Maximum Junction Temperature
Storage Temperature
Re ? ow Solder Temperature
ESD Protection Level (2)
Symbol
V IN
V EN , V SYNC
V LXA , V LXB
V OUT
t SC
I LXA and I LXB
θ JA
T A
T J
T S
T PKG
V ESD
Maximum
-0.3 to 7
-0.3 to V IN +0.3
-1 to V IN +1
-0.3 to V IN +0.3
-0.3 to V IN +0.3
Inde ? nite
1.2
40
-40 to +85
150
-65 to +150
260
2
Units
V
V
V
V
V
s
A
oC/W
oC
oC
oC
°C
kV
Note:
(1) Calculated from package in still air, mounted to 3” x 4.5”, 4 layer FR4 PCB with thermal vias under the exposed pad as per JESD51 standards.
(2) Tested according to JEDEC standard JESD22-A114-B.
Electrical Characteristics
Unless otherwise noted: V IN = 3.6V, SYNC = V IN , L = 4.7 μ H, C = 10 μ F, T A = -40°C to +85°C. Typical values are at T A = 25°C.
Parameter
Input Voltage Range
VOUT Accuracy (1)
Line Regulation
Load Regulation
Symbol
V IN
? V OUT
V LINEREG
V LOADREG
Conditions
I OUT = 10mA to 600mA
V IN = 2.7 to 5.5V, V OUT = 1.8V, I OUT = 300mA
I OUT = 10mA to 600mA
Min
2.7
-3
Typ
Max
5.5
3
0.2
0.0008
Units
V
%
%/V
%/mA
Minimum Duty Cycle
LXA, LXB Current Limit
DC MIN
I LIM
0.9
18
%
A
Quiescent Current
I Q
I OUT = 0mA, SYNC = 0, ENA, ENB = V IN
50
μ A
Shutdown Current
I SD
ENA, ENB = 0, LXA, LXB = Open
0.1
1
μ A
LXA and LXB
Leakage Current
I LXA , I LXB
V IN = 5.5V, LX = 0V, PMOS
V IN = 5.5V, LX = V IN , NMOS
-2
0.1
0.1
1
μ A
μ A
? 2007 Semtech Corp.
2
www.semtech.com
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