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器件3D模型￥ 4.812
LM43603PWPR 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:
HTSSOP-16
描述:
3.5V 至 36V、3A 同步降压转换器 16-HTSSOP -40 to 125
Pictures:
3D模型
符号图
焊盘图
引脚图
产品图
页面导航:
引脚图在P3Hot
典型应用电路图在P24P25P26
原理图在P1P14P15P20P22P24P25P29
封装尺寸在P46
焊盘布局在P42
标记信息在P46
封装信息在P43P46P47
技术参数、封装参数在P4
应用领域在P1P24P25P26P48
电气规格在P4P5P6
导航目录
LM43603PWPR数据手册
Page:
of 48 Go
若手册格式错乱，请下载阅览PDF原文件
LM43603
SNVSA09B –APRIL 2014–REVISED SEPTEMBER 2014
www.ti.com
Electrical Characteristics (continued)
Limits apply over the recommended operating junction temperature (T
J
) range of -40°C to +125°C, unless otherwise stated.
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
= 12 V, V
OUT
= 3.3 V, F
S
= 500 kHz.
SYMBOL PARAMETER CONDITIONS MIN TYP MAX UNIT
VOLTAGE REFERENCE (FB PIN)
V
FB
Feedback voltage T
J
= 25 ºC 1.004 1.011 1.018
T
J
= -40 ºC to 85 ºC 0.994 1.011 1.026 V
T
J
= -40 ºC to 125 ºC 0.994 1.011 1.030
I
LKG-FB
Input leakage current at FB pin FB = 1.011 V 0.2 65 nA
THERMAL SHUTDOWN
T
SD
(1)
Thermal shutdown Shutdown threshold 160 ºC
Recovery threshold 150 ºC
CURRENT LIMIT AND HICCUP
I
HS-LIMIT
Peak inductor current limit 4.4 5.5 6.4 A
I
LS-LIMIT
Inductor current valley limit 2.6 3.0 3.3 A
SOFT START (SS/TRK PIN)
I
SSC
Soft-start charge current 1.25 2.0 2.75 µA
R
SSD
Soft-start discharge resistance UVLO, TSD, OCP, or EN = 0 V 18 kΩ
POWER GOOD (PGOOD PIN)
V
PGOOD-HIGH
Power-good flag over voltage tripping % of FB voltage 110% 113%
threshold
V
PGOOD-LOW
Power-good flag under voltage tripping % of FB voltage 77% 88%
threshold
V
PGOOD-HYS
Power-good flag recovery hysteresis % of FB voltage 6%
R
PGOOD
PGOOD pin pull down resistance when V
EN
= 3.3 V 40 125
Ω
power bad
V
EN
= 0 V 60 150
MOSFETS
(2)
R
DS-ON-HS
High-side MOSFET ON-resistance I
OUT
= 1 A 120 mΩ
V
BIAS
= V
OUT
= 3.3 V
R
DS-ON-LS
Low-side MOSFET ON-resistance I
OUT
= 1 A 65 mΩ
V
BIAS
= V
OUT
= 3.3 V
(1) Ensured by design
(2) Measured at pins
7.6 Timing Requirements
MIN TYP MAX UNIT
CURRENT LIMIT AND HICCUP
N
OC
Hiccup wait cycles when LS current limit tripped 32 Cycles
T
OC
Hiccup retry delay time 5.5 ms
SOFT START (SS/TRK PIN)
T
SS
Internal soft-start time when SS pin open circuit 4.1 ms
POWER GOOD (PGOOD PIN)
T
PGOOD-RISE
Power-good flag rising transition deglitch delay 220 µs
T
PGOOD-FALL
Power-good flag falling transition deglitch delay 220 µs
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Product Folder Links: LM43603
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