TPS61230ARNST.A中文资料德州仪器数据手册PDF规格书

1 Features

1• Input Voltage Range: 2.5 V to 4.5 V

• Output Voltage Range: 2.5 V to 5.5 V

• Two 21-mΩ (LS) / 18-mΩ (HS) MOSFETs

• 20-μA Quiescent Current

• 6-A Valley Switching Current Limit

• 1.15-MHz Quasi-Constant Switching Frequency

• PFM Operation at the Light Load

• 1.05-ms Soft Start Time

• True Load Disconnect

• NOT Support Vin > Vout Operation

• Output Short Protection

• Over Voltage Protection

• Thermal Shutdown

• 2.0-mm x 2.0-mm VQFN 7-Pin Package

2 Applications

• Power Banks, Battery Backup Units

• USB Power Supply

• Tablet PCs

• Audio Power Amplifier

• Battery Powered Products

3 Description

The TPS61230A device is a high efficiency fully

integrated synchronous boost converter. It integrates

6-A, 21-mΩ and 18-mΩ power switches, which is

capable of delivering up to 2.4-A output current at 5-V

output with the 2.5-V input supply. The low RDS_ON

switches enable the power conversion efficiency up to

96% and minimize the thermal stress in very compact

solution size.

The typical operating frequency is 1.15 MHz, which

allows the use of small inductor and capacitors to

achieve a small solution size. The TPS61230A

provides an adjustable output voltage via an external

resistor divider.

During the light load condition, the TPS61230A

automatically enters into the PFM operation for

maximizing the efficiency with the lowest quiescent

current. In the shutdown by pulling EN pin to the logic

low, the load is completely disconnected from the

input, and the input current consumption is reduced

to below 1.0 μA.

When the output is shorted, the device enters into the

hiccup protection mode and recovery automatically

when the output short is released. Other features like

the output over voltage protection, thermal shutdown

protection are integrated.

The device is available in a 2.00-mm x 2.00-mm x

0.9-mm VQFN package and requires the minimum

amount of external components.