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TMI3257I
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TMI3257I

零售价
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1000
产品编号
VIN Range (V):
4.5 to 18
IOUT (A):
2
Switching Frequency (Hz):
800k
VFB (V):
0.807
Iq (μA):
300
HSFET Rds(on) (Ω):
0.13
LSFET Rds(on) (Ω):
0.065
Control Mode:
COT
Functions:
PFM/PWM/Fast Response
Package:
SOT563
Status:
MP
数量
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库存:
0
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FEATURES
参数
GENERAL DESCRIPTION
APPLICATIONS
TYPICAL APPILCATION
130mΩ/65mΩ Low RDS(ON) internal FETs
High Efficiency Synchronous-Mode Operation
Wide Input Range:4.5V to 18V
0.807V Reference Voltage
Typical 800kHz Switch Frequency
Up to 2A Output Current
COT control to achieve fast transient responses
Power Save Mode at Light Load
Integrated internal compensation
Stable with Low ESR Ceramic Output Capacitors
Over Current Protection with Hiccup Mode
Thermal Shutdown
Inrush Current Limit and Soft Start
Build in Input Over Voltage Protection
Available in SOT563 Package
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The TMI3257I is a high efficiency, 800kHz switching frequency, Constant on-Time (COT) control mode
synchronous step-down DC-DC converter capable of delivering up to 2A current with small size SOT563
package. TMI3257I integrates main switch and synchronous switch with very low RDS(ON) to minimize
the conduction loss. Low output voltage ripple and small external inductor and capacitor size are
achieved with 800kHz switching frequency. It adopts the COT architecture to achieve fast transient
responses for high voltage step down applications. The TMI3257I requires a minimum number of readily
available standard external components and is available in a 6-pin small size SOT563 RoHS compliant package.
Digital Set Top Boxes
Flat Panel Television and Monitors
Wireless and DSL Modems

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