A5973AD Up to 1.5 A step down switching regulator for automotive applications
The A5973AD is a step down monolithic power switching regulator with a minimum switch current limit of 1.8 A so it is able to deliver up to 1.5A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to VIN. The high current level is also achieved thanks to an HSOP8 package with exposed frame, that allows to reduce the Rth(JA) down to approximately 40 °C/W. The device uses an internal p-channel DMOS transistor (with a typical RDS(on) of 250 mΩ) as switching element to minimize the size of the external components.
An internal oscillator fixes the switching frequency at 500 kHz. Having a minimum input voltage of 4 V only it fits the automotive applications requiring the device operation even in cold crank conditions. Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection
技术特性
- Qualified following the AEC-Q100 requirements (see PPAP for more details)
- 1.5 A DC output current
- Operating input voltage from 4 V to 36 V
- 3.3 V / (±2%) reference voltage
- Output voltage adjustable from 1.235 V to VIN
- Low dropout operation: 100% duty cycle
- 500 kHz Internally fixed frequency
- Voltage feedforward
- Zero load current operation
- Internal current limiting
- Inhibit for zero current consumption
- Synchronization
- Protection against feedback disconnection
- Thermal shutdown
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功能框图
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A5973AD 订购信息
| 订购型号 |
产品状态 |
美金价格 |
数量 |
封装 |
包装形式 |
温度范围 |
材料声明 |
| A5973ADTR |
Active |
|
1000 |
PowerSO-8 |
Tape And Reel |
|
|
| A5973AD |
Active |
|
1000 |
PowerSO-8 |
Tube |
|
|
DATASHEET
| 描述 |
版本 |
大小 |
| A5973AD : Up to 1.5 A step down switching regulator for automotive applications |
7 |
1182KB |
APPLICATION NOTES
| 描述 |
版本 |
大小 |
| AN3288: g-Brake Lights: an adaptive rear lighting system based on the AIS326DQ inertial sensor and the STM8AF5168 MCU |
2 |
1074KB |
FLYERS
| 描述 |
版本 |
大小 |
| FLA597X0111: Up to 3 A switching step-down regulators |
1.0 |
740KB |
