B5973D Up to 2 A step down switching regulator for automotive applications
The B5973D is a step down monolithic power switching regulator with a minimum switch current limit of 2.25 A so it is able to deliver up to 2 A DC current to the load depending on the application conditions. The output voltage can be set from 1.235 V to 35 V. The high current level is also achieved thanks to an SO8 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 RDSon of 250 m Ω ) as switching element to minimize the size of the external components. An internal oscillator fixes the switching frequency at 250 kHz. Having a minimum input voltage of 4V only, it is particularly suitable for 5 V bus. Pulse by pulse current limit with the internal frequency modulation offers an effective constant current short circuit protection. 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 (temperature Grade 1), see PPAP for more details.
- 2 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 35 V
- Low dropout operation: 100 % duty cycle
- 250 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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B5973D 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 |
| B5973DTR |
Active |
|
1000 |
SO-8 |
Tape And Reel |
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| B5973D |
Active |
|
1000 |
SO-8 |
Tube |
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DATASHEET
| 描述 |
版本 |
大小 |
| B5973D : DS5575: 2 A step down switching regulator for automotive applications |
3 |
762KB |
