1FEATURES
23• 90% Efficiency at 6MHz Operation
• 31mA Quiescent Current
• Wide V IN Range From 2.3V to 5.5V
• 6MHz Regulated Frequency Operation
• Best in Class Load and Line Transient
• ±2% Total DC Voltage Accuracy
• Automatic PFM/PWM Mode Switching
• Low Ripple Light-Load PFM Mode
• >50dB VIN PSRR (1kHz to 10kHz)
• Internal Soft-Start, 100-ms Start-Up Time
• Integrated Active Power-Down Sequencing
(Optional)
• Three Surface-Mount External Components
Required (One 0603 MLCC Inductor, Two 0402
Ceramic Capacitors)
• Complete Sub 0.4-mm Component Profile
Solution
• Total Solution Size <10 mm2
• Available in a 6-Pin NanoFree™ (CSP)
Ultra-Thin Packaging

APPLICATIONS
• Cell Phones, Smart-Phones
• WLAN, GPS and Bluetooth™ Applications
• DTV Tuner Applications
• DC/DC Micro Modules

DESCRIPTION
The TPS6261x device is a high-frequency
synchronous step-down dc-dc converter optimized for
battery-powered portable applications. Intended for
low-power applications, the TPS6261x supports up to
350-mA load current, and allows the use of low cost
chip inductor and capacitors.
With a wide input voltage range of 2.3V to 5.5V, the device supports applications powered by Li-Ion
batteries with extended voltage range. Different fixed
voltage output versions are available from 1.2V to
2.3V.
The TPS6261x operates at a regulated 6-MHz
switching frequency and enters the power-save mode
operation at light load currents to maintain high
efficiency over the entire load current range.
The PFM mode extends the battery life by reducing
the quiescent current to 31mA (typ) during light load
operation. For low-frequency noise-sensitive
applications, the device can be forced into fixed
frequency PWM mode by pulling the MODE pin high.
These features, combined with high PSRR and AC
load regulation performance, make this device
suitable to replace a linear regulator to obtain better
power conversion efficiency.
The TPS6261x is available in an 6-pin thin chip-scale
package (CSP, 0.4mm max. height).