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L5963 is a dual step-down switching regulator with internal power switches, high side driver and a low drop-out linear regulator that can operate as standby regulator or normal LDO.
All the regulators can be connected directly to the vehicle battery. In addition to an adjustable voltage detector, voltage supervisors are available.
The two DC-DC converters can work in free-run condition or synchronize themselves to an external clock. DC/DCs' PWM outputs have a 180° phase shift.
The high operating frequency allowed by the synchronization input helps to reduce AM and FM interferences and grants the use of small and low cost inductors and capacitors.
This IC finds application in the automotive segment, where load dump protection and wide input voltage range are mandatory.
A slug-up package option is available for applications which require heatsink use.
In standby condition the device guarantees extremely low quiescent current (25 μA typical @ -40 °C < T < 85 °C)主要特性
- AEC-Q100 qualified
- Two step-down synchronous switching voltage regulators with internal power switches:
- Wide input voltage range (from 3.5 V to 26 V)
- Internal high-side/ low-side NDMOS
- 1 V minimum output
- 3.0 A load current
- 250 kHz free-run frequency
- 250 kHz < f < 2 MHz synchronization range
- Integrated soft-start
- Independent hardware enable pins
- Independent power supply
- 180° PWM output phase shift
- Programmable switching frequency divider by 1, 2, 4 or 8 between the two DC/DC regulators
- Power good function
- One standby / linear regulator
- Output voltage programmable with external resistor divider
- 250 mA maximum current capability
- Backup function
- Power good function
- One high side driver
- 0.5 V max drop @ 0.5 A
- Protected against short to ground and battery, loss of ground and battery, unsupplied short to battery
- Programmable under voltage battery detector
- Under voltage threshold adjustable through dedicated pin (VDIN)
- Load dump protection
- Independent thermal protection on all regulators
- Independent current limit on all regulators
- Extremely low quiescent current in standby conditions
- Power good / adjustable voltage detector outputs to realize customized power up/down sequences
评估工具
质量与可靠性
| 产品型号 | Marketing Status | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L5963DN-EHT |
批量生产
|
PowerSSO 36 | 汽车应用 | Ecopack2 | |
| L5963DN-EHX |
批量生产
|
PowerSSO 36 | 汽车应用 | Ecopack2 | |
| L5963Q-V0T |
批量生产
|
VFQFPN 48 7x7x1.0 | 汽车应用 | Ecopack2 | |
| L5963Q-V0Y |
批量生产
|
VFQFPN 48 7x7x1.0 | 汽车应用 | Ecopack2 | |
| L5963U-KBT |
批量生产
|
PowerSSO 36 | 汽车应用 | Ecopack2 | |
| L5963U-KBX |
批量生产
|
PowerSSO 36 | 汽车应用 | Ecopack2 |
(**) st.com上提供的材料声明表单可能是基于包装系列中最常用的封装的通用文档。因此，它们可能不是100%适用于特定的设备。有关特定设备的信息，请联系 销售支持 。
eDesignSuite
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L5963DN-EHX | 没有经销商，请联系我们的销售办事处 |
批量生产
|
EAR99 | NEC | Tube | PowerSSO 36 | -40 | 105 | MALAYSIA | 2.4 / 1k | ||
| L5963U-KBX | 没有经销商，请联系我们的销售办事处 |
批量生产
|
EAR99 | NEC | Tube | PowerSSO 36 | -40 | 105 | MALAYSIA | 2.4 / 1k | ||
| L5963Q-V0T | 没有经销商，请联系我们的销售办事处 |
批量生产
|
EAR99 | NEC | Tape And Reel | VFQFPN 48 7x7x1.0 | -40 | 105 | THAILAND | 2.6 / 1k | ||
| L5963Q-V0Y | 2 distributors | 立即购买 |
批量生产
|
EAR99 | NEC | Tray | VFQFPN 48 7x7x1.0 | -40 | 105 | THAILAND | 2.6 / 1k | |
| L5963DN-EHT | 1 distributors | 立即购买 |
批量生产
|
EAR99 | NEC | Tape And Reel | PowerSSO 36 | -40 | 105 | MALAYSIA | 2.4 / 1k | |
| L5963U-KBT | 没有经销商，请联系我们的销售办事处 |
批量生产
|
EAR99 | NEC | Tape And Reel | PowerSSO 36 | -40 | 105 | MALAYSIA | 2.4 / 1k | ||
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
2.4 / 1k供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
2.4 / 1k供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
2.6 / 1k供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
2.4 / 1k