TPS62620YFFT.B中文资料德州仪器数据手册PDF规格书

1 Features

1• Wide Input Voltage Range from 2.3 V to 5.5 V

• 6 MHz Regulated Frequency Operation

• 90% Efficiency at 6 MHz Operation

• 31 μA Quiescent Current

• Best in Class Load and Line Transient

• ±2% Total DC Voltage Accuracy

• Automatic PFM/PWM Mode Switching

• Low Ripple Light-Load PFM Mode

• Internal Soft Start, 120-μs Start-Up Time

• Integrated Active Power-Down Sequencing

(TPS62624 only)

• Current Overload and Thermal Shutdown

Protection

• Three Surface-Mount External Components

Required (One MLCC Inductor, Two Ceramic

Capacitors)

• Complete Sub 1-mm Component Profile Solution

• Total Solution Size < 12 mm2

• Available in a 6-Pin NanoFree™ (WCSP)

Regular and Ultra-Thin Packaging

2 Applications

• Mobile Phones, Smartphones

• WLAN, GPS and Bluetooth™ Applications

• DTV Tuner Applications

• DC/DC Micro Modules

3 Description

The TPS6262x device family provides high-frequency

synchronous step-down DC/DC converters optimized for battery-powered portable applications. Intended

for low-power applications, the TPS6262x devices

support up to 600 mA load current, and allow the use

of low cost chip inductor and capacitors.

With a wide input voltage range of 2.3 V to 5.5 V, the

devices support applications powered by Li-Ion batteries with extended voltage range. Different fixed

voltage output versions are available from 1.2 V to

2.3 V.

The TPS6262x devices operate at a regulated 6-MHz

switching frequency and enter the power-save mode

operation at light load currents to maintain high

efficiency over the entire load current range.

The pulse frequency modulation (PFM) mode extends

the battery life by reducing the quiescent current to

31 μA (typical) during light load and standby

operation. For noise-sensitive applications, the device can be forced into fixed frequency pulse width

modulation (PWM) mode by pulling the MODE pin

high.

The TPS6262x devices operate over a free air

temperature range of –40°C to 85°C. They are

available in a 6-pin chip-scale package (WCSP).