参数资料
型号: SC121ULTRT
厂商: Semtech
文件页数: 3/23页
文件大小: 0K
描述: IC REG BOOST SYNC 3.3V/ADJ 6MLPD
标准包装: 1
类型: 升压(升压)
输出类型: 两者兼有
输出数: 1
输出电压: 3.3V,1.8 V ~ 5 V
输入电压: 0.7 V ~ 4.5 V
频率 - 开关: 1.2MHz
电流 - 输出: 500mA
同步整流器:
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 6-MLPD-UT
包装: 标准包装
供应商设备封装: 6-MLPD-UT(1.5x2.0)
其它名称: SC121ULTRTDKR
SC121
ESD Protection Level (kV) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Absolute Maximum Ratings
IN, OUT, LX, FB (V) . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to +6.0
EN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 to (V IN + 0.3)
(1)
Recommended Operating Conditions
Ambient Temperature Range (°C) . . . . . . . . . . . . -40 to +85
V IN (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.7 to 4.5
V OUT (V) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.8 to 5.0
Thermal Information
Thermal Res. MLPD, Junction-Ambient (2) (°C/W) . . . . . . . 84
Maximum Junction Temperature (°C) . . . . . . . . . . . . . . . 150
Storage Temperature Range (°C) . . . . . . . . . . . -65 to +150
Peak IR Reflow Temperature (10s to 30s) (°C) . . . . . . +260
Exceeding the above specifications may result in permanent damage to the device or device malfunction. Operation outside of the parameters
specified in the Electrical Characteristics section is not recommended.
NOTES:
(1) Tested according to JEDEC standard JESD22-A114.
(2) Calculated from package in still air, mounted to 3 x 4.5 (in), 4 layer FR4 PCB with thermal vias under the exposed pad per JESD51 standards.
Electrical Characteristics
Unless otherwise noted V IN = 2.5V, C IN = C OUT = 22μF, L 1 = 4.7μH, T A = -40 to +85°C. Typical values are at T A = 25°C.
Parameter
Symbol
Conditions
Min
Typ
Max
Units
Input Voltage Range
Minimum Startup Voltage
V IN
V IN-SU
I OUT < 1mA, T A = 0°C to 85°C
0.7
0.85
4.5
V
V
Shutdown Current
Operating Supply Current (1)
I SHDN
I Q
T A = 25°C, V EN = 0V
I OUT = 0, V EN = V IN
0.1
3.5
1
μA
mA
Internal Oscillator Frequency
Maximum Duty Cycle
Minimum Duty Cycle
f OSC
D MAX
D MIN
1.2
90
20
MHz
%
%
Output Voltage
V OUT
V FB = 0V
3.3
V
Adjustable Output Voltage Range
V OUT_RNG
For V IN such that D MIN < D < D MAX
1.8
5.0
V
Regulation Feedback Reference Volt-
age Accuracy (Internal or External
V Reg-Ref
-1.5
1.5
%
Programming)
FB Pin Input Current
Startup Time
I FB
t SU
V FB = 1.2V
1
0.1
μA
ms
3
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