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LM2840YQMKX/NOPB 数据手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
DC/DC转换器
封装:
TSOT-23-6
描述:
LM2840 / LM2841 / LM2842 / LM2840 -Q1 / LM2841 -Q1 / LM2842 -Q1 100/300/600毫安42V输入降压型DC / DC稳压器，薄型SOT LM2840/LM2841/LM2842/ LM2840-Q1/LM2841-Q1/LM2842-Q1 100/300/600 mA 42V Input Step-Down DC/DC Regulator in Thin SOT
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P2Hot
典型应用电路图在P1
原理图在P7
封装尺寸在P12P13P15P16P17
标记信息在P12P13
封装信息在P12P13P14P15P16P17
技术参数、封装参数在P3P4
应用领域在P1P20
电气规格在P3P4P5P6
导航目录
LM2840YQMKX/NOPB数据手册
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LM2841, LM2842
www.ti.com
SNVS540H –MARCH 2009–REVISED APRIL 2013
Absolute Maximum Ratings
(1)(2)
V
IN
-0.3V to +45V
SHDN -0.3V to (V
IN
+0.3V) <45V
SW Voltage -0.3V to +45V
CB Voltage above SW Voltage 7V
FB Voltage -0.3V to +5V
Maximum Junction Temperature 150°C
Power Dissipation
(3)
Internally Limited
Lead Temperature 300°C
Vapor Phase (60 sec.) 215°C
Infrared (15 sec.) 220°C
ESD Susceptibility
(4)
Human Body Model 2 kV
(1) Absolute maximum ratings are limits beyond which damage to the device may occur. Operating Ratings are conditions for which the
device is intended to be functional, but device parameter specifications may not be ensured. For ensured specifications and test
conditions, see the Electrical Characteristics.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/ Distributors for availability and
specifications.
(3) The maximum allowable power dissipation is a function of the maximum junction temperature, T
J
(MAX), the junction-to-ambient thermal
resistance, θ
JA
, and the ambient temperature, T
A
. The maximum allowable power dissipation at any ambient temperature is calculated
using: P
D
(MAX) = (T
J(MAX)
− T
A
)/θ
JA
. Exceeding the maximum allowable power dissipation will cause excessive die temperature, and
the regulator will go into thermal shutdown. Internal thermal shutdown circuitry protects the device from permanent damage. Thermal
shutdown engages at T
J
=175°C (typ.) and disengages at T
J
= 155°C (typ).
(4) Human Body Model, applicable std. JESD22-A114-C.
Operating Conditions
Operating Junction Temperature Range
(1)
−40°C to +125°C
Storage Temperature −65°C to +150°C
Input Voltage V
IN
4.5V to 42V
SW Voltage Up to 42V
(1) All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are
100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC)
methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
Electrical Characteristics
Specifications in standard type face are for T
J
= 25°C and those with boldface type apply over the full Operating
Temperature Range ( T
J
= −40°C to +125°C). 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
= 12V.
Symbol Parameter Conditions Min
(1)
Typ
(2)
Max
(1)
Units
I
Q
Quiescent current SHDN = 0V 16 40 µA
Device On, Not Switching 1.30 1.75
mA
Device On, No Load 1.35 1.85
R
DSON
Switch ON resistance See
(3)
0.9 1.6 Ω
I
LSW
Switch leakage current V
IN
= 42V 0.0 0.5 µA
I
CL
Switch current limit LM2840
(4)
525 900 mA
LM2841
(4)
525 900 mA
LM2842
(4)
1.15 1.7 A
I
FB
Feedback pin bias current LM2840/41/42
(5)
0.1 1.0 µA
V
FB
FB Pin reference voltage 0.747 0.765 0.782 V
(1) All limits specified at room temperature (standard typeface) and at temperature extremes (bold typeface). All room temperature limits are
100% production tested. All limits at temperature extremes are ensured via correlation using standard Statistical Quality Control (SQC)
methods. All limits are used to calculate Average Outgoing Quality Level (AOQL).
(2) Typical numbers are at 25°C and represent the most likely norm.
(3) Includes the bond wires, R
DSON
from V
IN
pin to SW pin.
(4) Current limit at 0% duty cycle. May be lower at higher duty cycle or input voltages below 6V.
(5) Bias currents flow into pin.
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