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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
All tools & software
All resources
产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 25 Sep 2020 |
25 Sep 2020
|
应用手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 09 Oct 2017 |
09 Oct 2017
|
宣传册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 15 May 2019 |
15 May 2019
|
选型指南 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 24 Mar 2020 |
24 Mar 2020
|
手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 02 Mar 2020 |
02 Mar 2020
|
CAD/EDA Symbols, Footprints and Models
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** |
|---|---|---|---|---|---|
| L99SM81VQ6 |
NRND
|
VFQFPN 6X6 | 汽车应用 | Ecopack2 | |
| L99SM81VQ6TR |
批量生产
|
VFQFPN 6X6 | 汽车应用 | Ecopack2 | |
| L99SM81VY |
NRND
|
PowerSSO 36 | 汽车应用 | Ecopack2 | |
| L99SM81VYTR |
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 。
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$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| L99SM81VY | 没有经销商，请联系我们的销售办事处 |
NRND
|
EAR99 | NEC | Tube | PowerSSO 36 | - | - | - | |||
| L99SM81VYTR | 2 distributors |
批量生产
|
EAR99 | NEC | Tape And Reel | PowerSSO 36 | - | - | - | 1.9592 / 1k | ||
| L99SM81VQ6TR | 3 distributors | 立即购买 |
批量生产
|
EAR99 | NEC | Tape And Reel | VFQFPN 6X6 | - | - | THAILAND | 1.9175 / 1k | |
| L99SM81VQ6 | 没有经销商，请联系我们的销售办事处 |
NRND
|
EAR99 | NEC | Tray | VFQFPN 6X6 | - | - | - | |||
供货状态
NRNDECCN (US)
EAR99Budgetary Price (US$)*/Qty
供货状态
批量生产ECCN (US)
EAR99Budgetary Price (US$)*/Qty
1.9592 / 1k供货状态
NRNDECCN (US)
EAR99Budgetary Price (US$)*/Qty
