TPS65530A - 用于数码相机的完全集成式 8 通道 DC/DC 转换器

TPS65530A是TI德州仪器公司的一款无产品，TPS65530A是用于数码相机的完全集成式 8 通道 DC/DC 转换器，本站介绍了TPS65530A的封装应用图解、特点和优点、功能等，并给出了与TPS65530A相关的TI元器件型号供参考。

TPS65530A - 用于数码相机的完全集成式 8 通道 DC/DC 转换器 - 无 - 电源管理多通道IC(PMIC)解决方案 - 德州仪器

产品描述

产品特性

8-Channel DC/DC Converter and Low Dropout (LDO)
Integrated Power MOSFET Switch Except CH8
- Boost (CH5/7)
- Buck (CH1/3)
- Buck-Boost (CH2/4)
- Invert (CH6)
Low-Power Suspend Mode (Sleep Mode)
Power ON/OFF Sequence (CH1/2/3 and CH5/6)
LED-Back Light Brightness Control (CH7)
Fixed Switching Frequency (CH1–4: 1.5 MHz, CH5–8: 750 kHz)
Fixed Max Duty Cycle Internally
Soft Start
Undervoltage Lockout (UVLO)
Protection
- Thermal Shutdown (TSD)
- Overvoltage Protection (OVP)
- Overcurrent Protection (OCP) Except CH8
Supply Voltage Range: 1.5 V to 5.5 V
Operating Temperature Range: –25°C to 85°C
6 × 6 mm, 0.4-mm Pitch, 48-Pin QFN Package
APPLICATIONS
- Digital Still Cameras (DSCs)
- Portable Electronics Equipment

PowerPAD is a trademark of Texas Instruments.

DESCRIPTION/ORDERING INFORMATION

The TPS65530A is a fully integrated 8-channel switching dc/dc converter, and seven channels have integrated power FET.

CH2/4 are configured for H bridge for buck-boost topology and single inductor supports. These channels achieve higher efficiency in spite of input/output voltage conditions.

CH7 has a brightness control and drives white LED by constant current. Also, CH7 supports overvoltage protection (OVP) for open load.

CH1/2/3 have a power ON/OFF sequence suitable for a digital still camera (DSC) system. CH5/6 have a power ON/OFF sequence, depending on the CCD. Power ON/OFF for CCD block (CH5/6) is selectable by the input voltage level at the SEQ56 pin. CH4 and CH7 have individual ON/OFF sequences.

The TPS65530A high switching frequency is achieved by an integrated power MOSFET switch. It reduces external parts dynamically. Shutdown current consumption is less than 1 µA as a typical value.

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