L99ASC03

NRND

Brushless/Sensorless 3-phase motor pre-driver for automotive applications

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Product overview

Description

The L99ASC03 is a multifunctional system IC designed for three-phase motor control applications. The device features a voltage regulator to supply an external microcontroller and an operation amplifier for motor current sensing. It is designed to control six externalN-channel MOSFETs in bridge configuration to drive three-phase motors in automotive applications. All gate driver outputs are controlled by separate inputs.
The integrated Serial Peripheral Interface (SPI) makes it possible to adjust device parameters, control all operating modes and read out diagnostic information.
  • All features

    • Automotive qualified
    • 5 V low-drop voltage regulator (200 mA continuous mode)
    • Very low current consumption in standby mode (typ. 15 μA)
    • ST SPI interface for control and diagnostics
    • Window watchdog and fail-safe functionality
    • Two separate power supply pins
    • Three half-bridge drivers to control external MOSFETs (configurable by SPI)
    • Full drive of external MOSFETs down to 6 V input voltage
    • Input pin for each gate driver (with cross-current protection)
    • Two-stage charge pump supporting 100% duty cycle
    • PWM operation up to 80 kHz (not restricted)
    • Current-sense amplifier (configurable by SPI)
    • Disable input to turn off gate driver outputs
    • Analog multiplexer output to monitor external power supply voltages and internal junction temperature
    • Advanced BEMF detection IP
    • Overcurrent protection (programmable)
    • Drain-source monitoring and open-load detection
    • TQFP48 7 x 7 x 1 mm with Exposed Pad (4.5 x 4.5 mm) package

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STMicroelectronics - L99ASC03

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Quality and Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L99ASC03
NRND
TQFP 48 7x7x1.0 Automotive Ecopack2
L99ASC03TR
NRND
TQFP 48 7x7x1.0 Automotive Ecopack2

L99ASC03

Package:

TQFP 48 7x7x1.0

Material Declaration**:

Marketing Status

NRND

Package

TQFP 48 7x7x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

L99ASC03TR

Package:

TQFP 48 7x7x1.0

Material Declaration**:

Marketing Status

NRND

Package

TQFP 48 7x7x1.0

Grade

Automotive

RoHS Compliance Grade

Ecopack2

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

Sample & Buy

Part Number
Order from Distributors
Order from ST
Marketing Status
ECCN (US)
ECCN (EU)
Packing Type
Package
Temperature (°C) Country of Origin
Budgetary Price (US$)*/Qty
min
max
L99ASC03 No availability of distributors reported, please contact our sales office
NRND
EAR99 NEC Tray TQFP 48 7x7x1.0 - - PHILIPPINES
L99ASC03TR No availability of distributors reported, please contact our sales office
NRND
EAR99 NEC Tape And Reel TQFP 48 7x7x1.0 - - PHILIPPINES

L99ASC03

Marketing Status

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tray

Package

TQFP 48 7x7x1.0

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

L99ASC03TR

Marketing Status

NRND

ECCN (US)

EAR99

Budgetary Price (US$)*/Qty

ECCN (EU)

NEC

Packing Type

Tape And Reel

Package

TQFP 48 7x7x1.0

Operating Temperature (°C)

(min)

-

(max)

-

Budgetary Price (US$)* / Qty

Country of Origin

PHILIPPINES

(*) Suggested Resale Price (USD) per defined quantity for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors