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TPS40055PWPG4 其他数据使用手册 - TI（德州仪器）
制造商:
TI（德州仪器）
分类:
稳压芯片
封装:
HTSSOP-16
描述:
TEXAS INSTRUMENTS TPS40055PWPG4 直流/直流控制器, 电压模式, 8V至40V, 1路输出, 同步降压, 1MHz, HTSSOP-16
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页面导航:
引脚图在P3Hot
典型应用电路图在P20P21P22P23P24P25
原理图在P8
封装尺寸在P32P34P35
标记信息在P32P33
封装信息在P29P32P33P34P35
技术参数、封装参数在P4
应用领域在P33
电气规格在P5P6P21
导航目录
TPS40055PWPG4数据手册
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若手册格式错乱，请下载阅览PDF原文件
6
TPS40054
,
TPS40055
,
TPS40057
ZHCSAK8I –DECEMBER 2003–REVISED DECEMBER 2014
www.ti.com.cn
版权 © 2003–2014, Texas Instruments Incorporated
Electrical Characteristics (接接下下页页)
T
A
= –40°C to 85° C, V
IN
= 24 V
dc
, R
T
= 90.9 kΩ, I
KFF
= 150 µA, f
SW
= 500 kHz, all parameters at zero power dissipation
(unless otherwise noted)
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
CURRENT LIMIT
I
SINK
Current limit sink current 8.5 10 11.5 µA
Propagation delay to output
V
ILIM
= 23.7 V, V
SW
= (V
ILIM
– 0.5 V) 300
nsV
ILIM
= 23.7 V, V
SW
= (V
ILIM
– 2 V) 200
t
ON
Switch leading-edge blanking pulse time
(1)
100
t
OFF
Off time during a fault (soft-start cycle time) 7 cycles
V
OS
Offset voltage SW vs. ILIM
T
A
= 25°C –90 –70 –50
mVV
ILIM
= 23.6 V, 0°C ≤ T
A
≤ 85°C –120 –38
V
ILIM
= 23.6 V, -40°C ≤ T
A
≤ 85°C –120 –20
OUTPUT DRIVER
t
LRISE
Low-side driver rise time
C
LOAD
= 2200 pF
48 96
ns
t
LFALL
Low-side driver fall time 24 48
t
HRISE
High-side driver rise time
C
LOAD
= 2200 pF (HDRV – SW)
48 96
t
HFALL
High-side driver fall time 36 72
V
OH
High-level ouput voltage, HDRV I
HDRV
= –0.1 A (HDRV – SW)
V
BOOST
–1.5 V
V
BOOST
–1 V
V
V
OL
Low-level ouput voltage, HDRV I
HDRV
= 0.1 A (HDRV – SW) 0.75
V
OH
High-level ouput voltage, LDRV I
LDRV
= –0.1 A
V
BP10
–1.4 V
V
BP10
– 1 V
V
OL
Low-level ouput voltage, LDRV I
LDRV
= 0.1 A 0.5
Minimum controllable pulse width 100 150 ns
SS/SD SHUTDOWN
V
SD
Shutdown threshold voltage Outputs off 90 125 160
mV
V
EN
Device active threshold voltage 190 210 245
BOOST REGULATOR
V
BOOST
Output voltage V
IN
= 24.0 V 31.2 32.2 33.5 V
RECTIFIER ZERO CURRENT COMPARATOR (TPS40054 ONLY)
V
SW
Switch voltage LDRV output OFF –10 –5 0 mV
SW NODE
I
LEAK
Leakage current
(1)
(out of pin) 25 µA
THERMAL SHUTDOWN
T
SD
Shutdown temperature
(1)
165
°C
Hysteresis
(1)
20
UVLO
V
UVLO
KFF programmable threshold voltage R
KFF
= 28.7 kΩ 6.95 7.5 7.95
VV
DD
UVLO, fixed 7.2 7.5 7.9
V
DD
UVLO, hysteresis 0.46
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