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| 型号： | LM3102MHX/NOPB |
| 厂商： | National Semiconductor |
| 文件页数： | 4/24页 |
| 文件大小： | 0K |
| 描述： | IC REG BUCK SYNC ADJ 20-TSSOP |
| 产品培训模块： | SIMPLE SWITCHER® Regulators |
| 标准包装： | 2,500 |
| 系列： | PowerWise®, SIMPLE SWITCHER® |
| 类型： | 降压（降压） |
| 输出类型： | 可调式 |
| 输出数： | 1 |
| 输出电压： | 0.8 V ~ 7 V |
| 输入电压： | 4.5 V ~ 42 V |
| PWM 型： | 电流模式 |
| 频率 - 开关： | 1MHz |
| 电流 - 输出： | 2.5A |
| 同步整流器： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-TSSOP（0.173"，4.40mm 宽）裸露焊盘 |
| 包装： | 带卷 (TR) |
| 供应商设备封装： | 20-TSSOP-EP |
| 配用： | LM3102EVAL-ND - BOARD EVALUATION LM3102 |
| 其它名称： | LM3102MHX |
SNVS515G – SEPTEMBER 2007 – REVISED JANUARY 2012
ABSOLUTE MAXIMUM RATINGS (1) (2)
VIN, RON to AGND
SW to AGND
SW to AGND (Transient)
VIN to SW
BST to SW
All Other Inputs to AGND
-0.3V to 43.5V
-0.3V to 43.5V
-2V (< 100ns)
-0.3V to 43.5V
-0.3V to 7V
-0.3V to 7V
ESD Rating (3)
Storage Temperature Range
Junction Temperature (T J )
Human Body Model
±2kV
-65°C to +150°C
150°C
(1)
(2)
(3)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.
If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
The human body model is a 100pF capacitor discharged through a 1.5k ? resistor into each pin.
OPERATING RATINGS (1)
Supply Voltage Range (VIN)
Junction Temperature Range (T J )
Thermal Resistance ( θ JC ) 20 lead TSSOP (2)
Thermal Resistance ( θ JA ) 20 lead TSSOP (3)
Thermal Resistance ( θ JA ) 28 ball DSBGA (3)
4.5V to 42V
? 40°C to +125°C
6.5°C/W
30°C/W
50°C/W
(1)
(2)
(3)
Absolute Maximum Ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions under which
operation of the device is intended to be functional. For ensured specifications and test conditions, see the Electrical Characteristics.
θ JC measurements are performed in general accordance with Mil-Std 883B, Method 1012.1 and utilizes the copper heat sink technique.
Copper Heat Sink @ 60°C.
θ JA measurements were performed in general accordance with JEDEC standards JESD51–1 to JESD51–11.
ELECTRICAL CHARACTERISTICS
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
Start-Up Regulator, V CC
V CC
V IN - V CC
V CC output voltage
V IN - V CC dropout voltage
C CC = 680nF, no load
I CC = 2mA
5.0
6.0
50
7.2
200
V
mV
I CC = 20mA
350
570
I VCCL
V CC current limit (1)
V CC = 0V
40
65
mA
V CC-UVLO
V CC under-voltage lockout threshold
V IN increasing
3.6
3.75
3.9
V
(UVLO)
V CC-UVLO-HYS
V CC UVLO hysteresis
V IN decreasing – TSSOP
130
mV
package
V CC-UVLO-HYS
V CC UVLO hysteresis
V IN decreasing – DSBGA
150
mV
package
t VCC-UVLO-D
V CC UVLO filter delay
3
μs
I IN
I IN-SD
I IN operating current
I IN operating current, Device shutdown
No switching, V FB = 1V
V EN = 0V
0.7
25
1
40
mA
μA
Switching Characteristics
R DS-UP-ON
R DS- DN-ON
Main MOSFET R DS(on)
Syn. MOSFET R DS(on)
0.18
0.11
0.375
0.225
?
?
V G-UVLO
Gate drive voltage UVLO
V BST - V SW increasing
3.3
4
V
(1)
V CC provides self bias for the internal gate drive and control circuits. Device thermal limitations limit external loading.
4
Product Folder Links: LM3102
Copyright ? 2007–2012, Texas Instruments Incorporated
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