参数资料
| 型号： | SC194BMLTRT |
| 厂商： | Semtech |
| 文件页数： | 2/17页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK ADJ 1A 10MLP |
| 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： | 可调 |
| 输入电压： | 2.7 V ~ 5.5 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 1A |
| 同步整流器： | 无 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-VFDFN 裸露焊盘 |
| 包装： | 标准包装 |
| 供应商设备封装： | 10-MLP（3x3） |
| 产品目录页面： | 1357 (CN2011-ZH PDF) |
| 其它名称： | SC194BMLDKR |
SC194B
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
Input Supply Voltage
Logic Inputs
(SYNC/PWM, EN, MODE, VID0, VID1)
Output Voltage
LX Voltage
Thermal Impedance Junction to Ambient (1)
VOUT Short-Circuit to GND
Operating Ambient Temperature Range
Storage Temperature
Junction Temperature
Peak IR Re ? ow Temperature
ESD Protection Level (2)
Symbol
V IN
V N
V OUT
V LX
θ JA
t SC
T A
T S
T JC
T P
V ESD
Maximum
-0.3 to 7
-0.3 to V IN +0.3, 7V Max
-0.3 to V IN +0.3, 7V Max
-1 to V IN +1, 7V Max
40
Continuous
-40 to +85
-60 to +160
-40 to +150
260
2
Units
V
V
V
V
°C/W
s
°C
°C
°C
°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 per JESD51 standards.
(2) Tested according to JEDEC standard JESD22-A114-B.
Electrical Characteristics
Unless otherwise noted: V IN = 5V ,V OUT = 3.3V, EN = V IN , SYNC/PWM = V IN , MODE = V IN , T A = -40 to 85°C. Typical values are at T A =25°C.
Parameter
Input Voltage Range
VOUT Accuracy
VOUT Temperature Accuracy
Line Regulation
Load Regulation (PWM)
PSAVE Regulation
P-Channel On Resistance
N-Channel On Resistance
Symbol
V IN
V OUT
V OUT(T)
V OUT LINE
V OUT LOAD
V OUT PSAVE
R DSP
R DSN
Conditions
V IN > V OUT + dropout
I OUT = 0.5A, T A = 25°C
V OUT = 2.5/3.0/3.3/3.6V
I OUT = 0.5A, T A =-40°C to 85°C
V IN = 2.7V to 5.5V, V OUT = 2.5V,
I OUT = 0.5A, T A =-40°C to 85°C
I OUT = 0A to 1A
SYNC/PWM = GND, C OUT =22 μ F
I LX = 100mA, V IN =3.6V
I LX = 100mA, V IN =3.6V
Min
2.7
Typ
±0.3
±0.4
±0.3
+1.3
-0.3
0.275
0.165
Max
5.5
±1
±0.7
±0.65
±0.65
+1.6
-0.6
Units
V
%
%
%
%
%
Ω
Ω
Start-Up Time
T START
5
ms
P-Channel Current Limit
I LIM(P)
V IN = 2.7V to 5.5V
1.33
1.9
2.47
A
? 2006 Semtech Corp.
2
www.semtech.com
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