L9753CAXP

Configurable multichannel drivers Designed for driving various loads, high- or low-side configured December 2008 www.st.com/automotive Configurable multichannel drivers for automotive systems Because of the freely configurable power switches, the device family offers load driving in high-side and low-side mode. Up to four channels can operate in PMW mode – dimming LEDs, for example. Open-load diagnosis is provided in off mode. The L9753 and L99MC6 can disable the open-load sensing current to prevent glowing LEDs. The L99MC6 offers an adjustable slew rate for LED drive and a cross current protection in bridge configuration. The devices are housed in small power packages with superior thermal performance – ideal for compact and lightweight systems. In automotive applications, increasing numbers of loads are required to be driven in high-side mode. Multichannel switches of today are mostly either high- or low-side configured. This requires more than one IC if mixed load configurations need to be driven. STMicroelectronics offers a new device family, which provides freely configurable output drivers in either highor low-side mode. Flexible configurability is also the key to many interesting applications which need a bridge arrangement, driving DC or stepper motors. The L9733, L9753, L9848 and L99MC6 form a family of configurable, SPI-controlled multichannel drivers for various loads such as incandescent lamps, LEDs, DC motors, unipolar and bipolar stepper motors. Key applications QQ QQ QQ QQ QQ Load driving in low-side and high-side mode Engine management Junction boxes Door-module systems HVAC flap driving LED driving Vdd Vs D S En PWM High-side configured Load 6..8x D S SPI Low-side configured A single PC-board layout allows flexible load partitioning configured to drive a DC motor. This flexibility is achieved without changing the PC-board layout. This is an ideal concept to cover various HVAC platforms from low to high end with a single PC board without changing the actuator driver IC. Configurable drivers can drive stepper or DC motors by just interconnecting drain and source outputs in different schemes. With the intelligent use of zero-ohm resistors, 4 MOSFET drivers can be configured as low-side drivers to drive a unipolar stepper motor, or they can be bridge- PC board D S D S D S D S Unipolar stepper motor Vs Vs GND SM D S D S GND D S GND = zero ohm resistors 2 Vs D S GND Vs PC board DC motor GND Vs GND GND GND M Configurable multichannel driver features Basic features of L9848 QQ VDD 5 V QQ QQ QQ QQ CLK DI DO CS SPI Control logic QQ QQ QQ QQ QQ QQ QQ 1 PWM in 5 1 PWM in 6 Additional features of L9733 versus L9848 VB 4.5/16 V QQ VDD 5 V Res QQ QQ Vdo 3.3/5 V CLK DI DO CS SPI Control logic QQ QQ QQ QQ QQ QQ 1 PWM in 6 QQ QQ 1 PWM in 7 QQ Configurable up to eight high-side or eight low-side drivers RDS(on) = max. 0.7 Ω @ Tj = 25 °C Minimum current limit of each output: 1 A PWM or direct drive inputs for three outputs SPI interface (16 bit) for data communication and diagnostics Selective diagnostic of open load, shorted load and shorted switch Programmable latched or unlatched fault mode Additional supply voltage from battery (min. 4.5 V) Additional supply voltage for I/O interfaces (3.3/5 V) Output voltage clamping min. 40 V (low-side mode) Output voltage clamping max. -14 V (high-side mode) PowerSSO-28 package 1 PWM in 8 Additional features of L9753 versus L9733 VBATP 4.5/18 V QQ VDD 5 V Control logic EN/SLP QQ QQ QQ 1 PWM in 3 QQ 1 PWM in 4 QQ PWM in 5 1 PWM in 6 1 QQ QQ CLK DI DO CS CSMS VDDQ 3/5 V Configurable up to six high-side or eight low-side drivers RDS(on) = max.1.5 Ω @ Tj = 25 °C Minimum current limit of each output: 0.8 A PWM or direct drive inputs for two low-side outputs SPI interface (8 bit) for data communication and diagnostics Diagnostic of open-load detection in off state Diagnostic of shorted-load detection in on state Single supply voltage 4.75 V to 5.25 V Output voltage clamping min. 35 V (low-side mode) Output voltage clamping -30 V (high-side mode) Thermal shutdown for all outputs SO-28 package QQ QQ SPI Control logic QQ QQ Configurable up to six high-side or eight low-side drivers RDS(on) = max. 0.9 Ω @ Tj = 25 °C PWM or direct drive inputs for four outputs Discrete input to enable or disable all eight outputs in parallel Independently selectable high/low current limit for each output Programmable specific LED mode for each output Programmable open-load detection thresholds for each output Latched fault condition Output voltage clamping max. -27 V (high-side mode) Reverse-battery protection for outputs Protection against module ground loss PowerSSO-28 package 3 Configurable multichannel driver features Features of L99MC6 QQ VDD 5 V QQ QQ QQ 1 IN/PWM QQ QQ QQ QQ QQ SCK DI DO CSN QQ Control logic QQ QQ SPI Configurable up to three high-side or six low-side drivers RDS(on) = max. 1.0 Ω @ Tj = 25 °C Minimum current limit of each output: 0.6 A Direct input for channel 2, configurable for other outputs ST SPI interface (16-bit) for data communication and diagnostics Diagnostic of open-load detection in off state Diagnostic of shorted-load detection in on state Programmable bridge / LED / bulb mode Logic supply voltage compatible with 3.3 V and 5 V Output voltage clamping Temperature pre-warning and thermal shutdown Package PSSO-16 Configurable multichannel driver applications Junction box – relay, LED and bulb driving Vbatt SPI Control logic Vbatt SPI Control logic V batt Vbatt L99MC6 PWM L9753 PWM driven outputs configured for high-side mode allow LED and bulb driving with dimming. Further configurable outputs control high-side relays. The remaining outputs are preferred to drive relays in low-side operation. 4 Configurable multichannel driver applications Door modules – motor, relay and LED driving V batt V batt Turn indicator - M Levelling Exterior light M SPI SPI Control logic V batt M Levelling M L9848 L9733 L9753 L9848 L9733 L9753 Power window - M Door modules need to drive vertical and lateral levelling motors for the exterior mirror. Six switches are needed to configure 3 half bridges. The multichannel drivers have two residual switches which are suitable to drive the relays for the power window. Alternatively, these two channels may also be dedicated to driving the LED side marker and the exterior courtesy light. HVAC – DC-motor driving V batt V batt M M M SPI SPI Control logic Control logic M M L9848 L9733 L9753 L9848 L9733 L9753 Four channels configured to low-side mode and four channels configured to high-side mode form a quad half bridge. This allows two DC motors to be driven simultaneously or three DC motors in sequential mode. 5 Configurable multichannel driver applications Powertrain systems V batt SPI Control logic V batt Tach-Out (PWM) Starter relay Key-on relay A/C fan relay Power latch relay A/C compressor relay Canister purge relay (opt PWM) SPI MIL lamp (or LED) Control logic Air pump relay Water lamp (or LED) SM L9848 L9733 L9753 Fuel pump relay (opt PWM) Coolant fan relay Driving the main relays and lamps of an engine management unit. Idle speed L9848 L9733 L9753 Driving the idle-speed stepper motor and four auxiliary relays of an engine management unit. Packages SO-28 PowerSSO-28 PowerSSO-28 © STMicroelectronics - December 2008 - Printed in Italy - All rights reserved The STMicroelectronics corporate logo is a registered trademark of the STMicroelectronics group of companies. All other names are the property of their respective owners. For more information on ST products and solutions, visit www.st.com Order code: BROCTAL0908 PowerSSO-16 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: STMicroelectronics: L9753CAXP L9753CAXPTR