参数资料
型号: LM3102EVAL/NOPB
厂商: National Semiconductor
文件页数: 5/24页
文件大小: 0K
描述: EVAL BOARD FOR LM3102
标准包装: 1
系列: PowerWise®, SIMPLE SWITCHER®
主要目的: DC/DC,步降
输出及类型: 1,非隔离
输出电压: 3.3V
电流 - 输出: 2.5A
输入电压: 8 ~ 42 V
稳压器拓扑结构: 降压
频率 - 开关: 500kHz
板类型: 完全填充
已供物品: 板,文档
已用 IC / 零件: LM3102
SNVS515G – SEPTEMBER 2007 – REVISED JANUARY 2012
ELECTRICAL CHARACTERISTICS (continued)
Specifications with standard type are for T J = 25°C only; limits in boldface type apply over the full Operating Junction
Temperature (T J ) range. Minimum and Maximum limits are specified through test, design, or statistical correlation. Typical
values represent the most likely parametric norm at T J = 25°C, and are provided for reference purposes only. Unless
otherwise stated the following conditions apply: V IN = 18V, V OUT = 3.3V.
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Soft-start
I SS
SS pin source current
V SS = 0.5V
6
8
10
μA
Current Limit
I CL
I CL
Syn. MOSFET current limit threshold
Syn. MOSFET current limit threshold
LM3102
LM3102TLX–1
2.7
1.5
A
A
ON/OFF Timer
t on
ON timer pulse width
V IN = 10V, R ON = 100 k ?
1.38
μs
V IN = 30V, R ON = 100 k ?
0.47
t on-MIN
t off
ON timer minimum pulse width
OFF timer pulse width
150
260
ns
ns
Enable Input
V EN
V EN-HYS
EN Pin input threshold
Enable threshold hysteresis
V EN rising
V EN falling
1.13
1.18
90
1.23
V
mV
Regulation and Over-Voltage Comparator
V FB
In-regulation feedback voltage
V SS ≥ 0.8V
0.784
0.8
0.816
V
T J = ? 40°C to +125°C
V SS ≥ 0.8V
T J = 0°C to +125°C
0.788
0.812
V FB-OV
Feedback over-voltage threshold
0.888
0.920
0.945
V
I FB
Thermal Shutdown
5
nA
T SD
T SD-HYS
Thermal shutdown temperature
Thermal shutdown temperature
T J rising
T J falling
165
20
°C
°C
hysteresis
Copyright ? 2007–2012, Texas Instruments Incorporated
Product Folder Links: LM3102
5
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