供应TPS62611YFDR**降压转换器

1FEATURES  
转换效率90% Efficiency at 6MHz Operation DESCRIPTION  
. 31mA Quiescent Current  The TPS6261x device is a high-frequency  
. Wide VIN Range From 2.3V to 5.5V synchronous step-down dc-dc converter optimized for  
. 6MHz Regulated Frequency Operation battery-powered portable applications
. Intended for  
. Best in Class Load and Line Transient low-power applications, the TPS6261x supports up to  350-mA load current, and allows the use of low cost 
. ±2% Total DC Voltage Accuracy chip inductor and capacitors.  
. Automatic PFM/PWM Mode Switching  With a wide input voltage range of 2.3V to 5.5V, the  
. Low Ripple Light-Load PFM Mode device supports applications powered by Li-Ion  
. >50dB VIN PSRR (1kHz to 10kHz) batteries with extended voltage range
. Different fixed  
. Internal Soft-Start, 100-ms Start-Up Time voltage output versions are available from 1.2V to  2.3V
. Integrated Active Power-Down Sequencing  
(Optional) 
The TPS6261x operates at a regulated 6-MHz  switching frequency and enters the power-save mode 
. Three Surface-Mount External Components  operation at light load currents to maintain high Required (One 0603 MLCC Inductor, Two 0402 efficiency over the entire load current range
. Ceramic Capacitors)  
. Complete Sub 0.4-mm Component Profile The PFM mode extends the battery life by reducing  Solution the quiescent current to 31mA (typ) during light load  operation
. For low-frequency noise-sensitive  
. Total Solution Size <10 mm2  applications, the device can be forced into fixed  
. Available in a 6-Pin NanoFree
. (CSP) frequency PWM mode by pulling the MODE pin high
.Ultra-Thin Packaging These features, combined with high PSRR and AC  load regulation performance, make this device  APPLICATIONS suitable to replace a linear regulator to obtain better  power conversion efficiency 
. Cell Phones, Smart-Phones  
. WLAN, GPS and Bluetooth
. Applications 
The TPS6261x is available in an 6-pin thin chip-scale  package (CSP, 0.4mm max. height). 
. DTV Tuner Applications  
. DC/DC Micro Modules

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