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LTC3895 PDF预览

LTC3895

更新时间: 2023-12-20 18:43:59
品牌 Logo 应用领域
亚德诺 - ADI 控制器
页数 文件大小 规格书
38页 2232K
描述
150V、低 IQ、同步降压型 DC/DC 控制器

LTC3895 数据手册

 浏览型号LTC3895的Datasheet PDF文件第1页浏览型号LTC3895的Datasheet PDF文件第2页浏览型号LTC3895的Datasheet PDF文件第3页浏览型号LTC3895的Datasheet PDF文件第5页浏览型号LTC3895的Datasheet PDF文件第6页浏览型号LTC3895的Datasheet PDF文件第7页 
LTC3895  
elecTrical characTerisTics The l denotes the specifications which apply over the specified operating  
junction temperature range, otherwise specifications are at TA = 25°C (Note 2), VIN = 12V, VRUN = 5V, VEXTVCC = 0V, VDRVSET = 0V,  
VPRG = FLOAT unless otherwise noted.  
SYMBOL  
PARAMETER  
CONDITIONS  
MIN  
TYP  
MAX  
UNITS  
Gate Driver  
TG Pull-up On-Resistance  
V
V
V
= INTV  
= INTV  
2.2  
1.0  
Ω
Ω
DRVSET  
CC  
TG Pull-down On-Resistance  
BG Pull-up On-Resistance  
BG Pull-down On-Resistance  
2.0  
1.0  
Ω
Ω
DRVSET  
CC  
BOOST to DRV Switch On-Resistance  
= 0V, V  
= INTV  
CC  
11  
Ω
CC  
SW  
DRVSET  
TG Transition Time:  
Rise Time  
(Note 6) V  
= INTV  
DRVSET  
= 3300pF  
= 3300pF  
CC  
C
C
25  
15  
ns  
ns  
LOAD  
LOAD  
Fall Time  
BG Transition Time:  
Rise Time  
(Note 6) V  
= INTV  
DRVSET  
CC  
C
C
= 3300pF  
25  
15  
ns  
ns  
LOAD  
LOAD  
Fall Time  
= 3300pF  
Top Gate Off to Bottom Gate On Delay  
Synchronous Switch-On Delay Time  
C
C
= 3300pF each driver, V  
= INTV  
= INTV  
LOAD  
DRVSET  
DRVSET  
CC  
CC  
55  
ns  
Bottom Gate Off to Top Gate On Delay  
Top Switch-On Delay Time  
= 3300pF each driver, V  
LOAD  
50  
80  
ns  
ns  
t
TG Minimum On-Time  
(Note 7) V  
= INTV  
DRVSET CC  
ON(MIN)  
Charge Pump for High Side Driver Supply  
Charge Pump Output Current  
I
V
V
=16V, V = 12V, V  
= 0V  
= 0V  
65  
55  
µA  
µA  
CPUMP  
BOOST  
BOOST  
SW  
FREQ  
FREQ  
=19V, V = 12V, V  
SW  
DRV LDO Regulator  
CC  
DRV Voltage from NDRV LDO  
NDRV Driving External NFET, V  
= 0V  
CC  
EXTVCC  
Regulator  
7V < V < 150V, DRVSET = 0V  
5.8  
9.6  
6.0  
10.0  
6.2  
10.4  
V
V
IN  
11V < V < 150V, DRVSET = INTV  
IN  
CC  
DRV Load Regulation from NDRV  
NDRV Driving External NFET  
CC  
CC  
LDO Regulator  
I
= 0mA to 50mA, V  
= 0V  
EXTVCC  
0
1.0  
%
DRV Voltage from Internal V LDO NDRV = DRV , V = 0V  
CC EXTVCC  
CC  
IN  
7V < V < 150V, DRVSET = 0V  
5.6  
9.5  
5.85  
9.85  
6.1  
10.3  
V
V
IN  
11V < V < 150V, DRVSET = INTV  
IN  
CC  
DRV Load Regulation from V LDO  
I
= 0mA to 50mA, V  
= 0V  
CC  
IN  
CC  
EXTVCC  
DRVSET = 0V  
1.4  
0.9  
2.5  
2.0  
%
%
DRVSET = INTV  
CC  
DRV Voltage from Internal EXTV  
7V < V < 13V, DRVSET = 0V  
EXTVCC  
5.8  
9.6  
6.0  
10.0  
6.2  
10.4  
V
V
CC  
CC  
LDO  
11V < V  
< 13V, DRVSET = INTV  
EXTVCC  
CC  
DRV Load Regulation from Internal  
I
= 0mA to 50mA  
CC  
CC  
EXTV LDO  
DRVSET = 0V, V  
= 8.5V  
EXTVCC  
0.7  
0.5  
2.0  
2.0  
%
%
CC  
DRVSET = INTV , V  
= 13V  
CC EXTVCC  
EXTV LDO Switchover Voltage  
EXTV Ramping Positive  
CC  
CC  
DRVUV = 0V  
4.5  
7.4  
4.7  
7.7  
4.9  
8.0  
V
V
DRVUV = INTV , DRVSET = INTV  
CC  
CC  
EXTV Hysteresis  
250  
5.0  
7.0  
9.0  
mV  
CC  
Programmable DRV  
Programmable DRV  
Programmable DRV  
R
= 50k  
CC  
CC  
CC  
DRVSET  
NDRV Driving External NFET, V  
= 0V  
= 0V  
= 0V  
V
EXTVCC  
EXTVCC  
EXTVCC  
R
= 70k  
DRVSET  
NDRV Driving External NFET, V  
6.4  
7.6  
V
R
= 90k  
DRVSET  
NDRV Driving External NFET, V  
V
3895fa  
4
For more information www.linear.com/LTC3895  

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