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The L99SM81V is an automotive grade integrated driver for bipolar two-phase stepper motors capable of current controlled micro-stepping with programmable amplitude. The device features a 5 V voltage regulator to supply external sensors.
The integrated Serial Peripheral Interface (SPI) makes it possible to adjust device parameters, control all operating modes and read out diagnostic information. Digital I/Os are also optionally usable for more flexible and reliable application control.
主要特性
- AEC-Q100 qualified
- Stepper motor driver with up to 1.35 A current capability
- Programmable stepping mode:
- Full step, Half step, Mini step, 1/8 Micro step, 1/16 Micro step
- Current regulation by integrated PWM control with fully integrated current sensing
- Equivalent 10 bit resolution on current regulation loop:
- Two 4-bit programmable full scale current amplitudes: one for RUN and one for HOLD mode
- 6-bit DAC for reference current generation (whatever programmed full scale amplitude)
- 4 programmable decay modes:
- Slow-mode, mixed-mode and 2x automatically selected decay-modes
- 3x programmable inputs for direct control of step clock, direction, hold and step modes
- 1x programmable analog output for Tj measurement or band-gap reference
- 2x programmable digital outputs for internally generated PWM ON duty cycles, error signals, coils voltage measurement synchronization signals
- Programmable MOSFETs switching speed: four options for EMC and power dissipation trade-off optimization
- PWM frequency wobbling for reduction of conducted EM energy
- Outputs protection and diagnosis (open load, short to battery, short to GND)
- Integrated ADC for coil voltage measurement and stall detection
- 5 V low drop voltage regulator short-circuit protected
- Very low current consumption in standby mode (typ. 10 µA)
- Thermal warning and shutdown
- ST SPI 4.0 interface for control and diagnostics
样片和购买
| 产品型号 | 封装 | 包装类型 | 温度（ºC） | 供货状态 | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | 从ST订购 | 从分销商订购 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||
| L99SM81VY | PowerSSO 36 | Tube | - | - | NRND | EAR99 | - | 没有经销商，请联系我们的销售办事处 | ||
| L99SM81VYTR | PowerSSO 36 | Tape And Reel | - | - | 批量生产 | EAR99 | - | 1.9592 / 1k | 查看供货情况 | |
| L99SM81VQ6TR | VFQFPN 6X6 | Tape And Reel | - | - | 批量生产 | EAR99 | THAILAND | 1.9175 / 1k | 立即购买 | 查看供货情况 |
| L99SM81VQ6 | VFQFPN 6X6 | Tray | - | - | NRND | EAR99 | - | 没有经销商，请联系我们的销售办事处 | ||
L99SM81VY
封装
PowerSSO 36包装类型
TubeBudgetary Price (US$)*/Qty
L99SM81VYTR
封装
PowerSSO 36包装类型
Tape And ReelBudgetary Price (US$)*/Qty
1.9592 / 1kL99SM81VQ6
封装
VFQFPN 6X6包装类型
TrayBudgetary Price (US$)*/Qty
评估工具
| 产品型号 | 供货状态 | 封装 | 等级规格 | 符合RoHS级别 | 材料声明** |
|---|---|---|---|---|---|
| L99SM81VQ6 | NRND | VFQFPN 6X6 | Automotive | Ecopack2 | |
| L99SM81VQ6TR | 批量生产 | VFQFPN 6X6 | Automotive | Ecopack2 | |
| L99SM81VY | NRND | PowerSSO 36 | Automotive | Ecopack2 | |
| L99SM81VYTR | 批量生产 | PowerSSO 36 | Automotive | 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 。
