TPS62234 - 采用 1 x 1.5mm SON 封装的 3MHz、500mA 降压转换器

TPS62234是TI德州仪器公司的一款转换器（集成开关）产品，TPS62234是采用 1 x 1.5mm SON 封装的 3MHz、500mA 降压转换器，本站介绍了TPS62234的封装应用图解、特点和优点、功能等，并给出了与TPS62234相关的TI元器件型号供参考。

TPS62234 - 采用 1 x 1.5mm SON 封装的 3MHz、500mA 降压转换器 - 转换器（集成开关） - DC/DC开关稳压器 - 德州仪器

产品特性

2 MHz / 3 MHz Switch Frequency
Up to 94% Efficiency
Output Peak Current up to 500 mA
Excellent AC and Transient Load Regulation
High PSRR (up to 90 dB)
Small External Output Filter Components 1 μH and 4.7 μF
VIN range from 2.05 V to 6 V
Optimized Power-Save Mode For Low Output Ripple Voltage
Forced PWM Mode Operation
Typ. 22-μA Quiescent Current
100% Duty Cycle for Lowest Dropout
Small 1-mm × 1.5-mm × 0.6-mm USON Package
12-mm2 Minimum Solution Size
Supports 0.6-mm Maximum Solution Height
Soft-Start With Typical 100 μs Start-Up Time

产品应用

LDO Replacement
Portable Audio, Portable Media
Cell Phones
Low Power Wireless
Low Power DSP Core Supply
Digital Cameras

产品说明

The TPS6223x device family is a high-frequency, synchronous, step-down DC – DC converter optimized for battery powered portable applications. It supports up to 500-mA output current and allows the use of tiny and low-cost chip inductors and capacitors.

With a wide input voltage range of 2.05 V to 6 V, the device supports applications powered by Li-Ion batteries with extended voltage range. The minimum input voltage of 2.05 V allows as well the operation from Li-primary or two alkaline batteries. Different fixed output voltage versions are available from 1.0 V to 3.3 V.

The TPS6223x series features switch frequency up to 3.8 MHz. At medium to heavy loads, the converter operates in pulse width modulation (PWM) mode and automatically enters power-save mode operation at light load currents to maintain high efficiency over the entire load current range.

Because of its excellent power supply rejection ratio (PSRR) and AC load regulation performance, the device is also suitable to replace linear regulators to obtain better power conversion efficiency.

The power-save mode in TPS6223x reduces the quiescent current consumption down to 22 μA during light load operation. It is optimized to achieve very low output voltage ripple even with small external component and features excellent AC load regulation.

For very noise-sensitive applications, the device can be forced to PWM mode operation over the entire load range by pulling the MODE pin high. In the shutdown mode, the current consumption is reduced to less than 1 μA. The TPS6223x operates over a free air temperature range of –40°C to 85°C. It is available in a 1 mm × 1.5 mm × 0.6 mm 6-pin SON package.

产品器件信息

PART NUMBER	PACKAGE	BODY SIZE (NOM)
TPS6223xx	USON (6)	1.45 mm x 1.00 mm

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