L9826_05 STMICROELECTRONICS [STMicroelectronics], L9826_05 Datasheet

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L9826_05

Manufacturer Part Number
L9826_05
Description
Octal Low-Side Driver for Resistive and Inductive Loads with Serial/Parallel Input Control, Output Protection and Diagnostic
Manufacturer
STMICROELECTRONICS [STMicroelectronics]
Datasheet
Order codes
July 2005
Features
OUTPUTS CURRENT CAPABILITY UP TO
450mA
TYPICAL R
PARALLEL CONTROL INPUTS FOR
OUTPUTS 1 AND 2
SPI CONTROL FOR OUTPUTS 1 TO 8
RESET FUNCTION WITH RESET SIGNAL AT
NRES PIN OR UNDERVOLTAGE AT V
INTRINSIC OUTPUT VOLTAGE CLAMPING
AT TYP. 50V
OVERCURRENT SHUTDOWN AT OUTPUTS
3 TO 8
SHORT CIRCUIT CURRENT LIMITATION
AND SELECTIVE THERMAL SHUTDOWN AT
OUTPUTS 1 AND 2
OUTPUT STATUS DATA AVAILABLE ON
THE SPI
Part number
Serial/Parallel Input Control, Output Protection and Diagnostic
L9826TR
L9826
Octal Low-Side Driver for Resistive and Inductive Loads with
ON
= 1.5Ω AT T
J
Temp range, °C
= 25°C
CC
CD00002120
Description
The L9826 is a Octal Low-Side Driver Circuit,
dedicated for automotive applications. Output
voltage clamping is provided for flyback current
recirculation, when inductive loads are driven.
Chip Select and Serial Peripheral Interface for
outputs control and diagnostic data transfer.
Parallel Control inputs for two outputs.
.
SO20 (16+2+2)
Package
SO20
SO20
Tape & Reel
Packing
Tube
L9826
www.st.com
Rev 8
1/17
17

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L9826_05 Summary of contents

Page 1

Octal Low-Side Driver for Resistive and Inductive Loads with Serial/Parallel Input Control, Output Protection and Diagnostic Features ■ OUTPUTS CURRENT CAPABILITY UP TO 450mA ■ TYPICAL R = 1.5Ω ■ PARALLEL CONTROL INPUTS FOR OUTPUTS 1 AND ...

Page 2

Contents 1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

Page 3

L9826 1 Block Diagram Figure 1. Block diagram NON1 Q1 Diag1 NON2 Diag2 NCS V CC CLK V CC SDI V CC SDO GND NRES Reset V CC Undervoltage RESET ...

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Pins Description and Connection Diagrams 2 Pins Description and Connection Diagrams 2.1 Pin description Table 1. Pin description N° Pin 1 Out 6 2 Out 1 3 NRes 4 NCS 5 GND 6 GND 7 NON1 8 SDO 9 ...

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L9826 2.2 Pins connection Figure 2. Connection diagram 2.3 Thermal data Table 2. Thermal data Symbol Thermal shutdown T Thermal shutdown threshold JSC Thermal resistance Single output (junction R thjA-one ambient) All outputs (junction R thjA-all ambient) R Junction to ...

Page 6

Electrical Specifications 3 Electrical Specifications 3.1 Absolute maximum ratings Table 3. For voltages and currents applied externally to the device Symbol Parameter V Supply voltage CC Inputs and data lines (NONx, NCS, CLK, SDI, nRes) Voltage V (NONx, NCS, ...

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L9826 3.2 Electrical characteristics Table 4. Electrical Characteristcs (4.5V ≤ V ≤ 5,5V; -40°C ≤ Symbol Parameter Supply voltage I Standby current ccSTB I Operating mode ccOPM ∆I during reverse output ∆ current V Undervoltage Reset ...

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Electrical Specifications Table 4. Electrical Characteristcs (continued) (4.5V ≤ V ≤ 5,5V; -40°C ≤ Symbol Parameter I Leakage current OUTL1 - 8 V Output clamp voltage clp R On resistance OUT 1 ... 8 DSon C Output ...

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L9826 Table 4. Electrical Characteristcs (continued) (4.5V ≤ V ≤ 5,5V; -40°C ≤ Symbol Parameter f Clock frequency clk t Minimum time CLK = HIGH clh t Minimum time CLK = LOW cll Propagation delay t pcld CLK ...

Page 10

Functional Description 4 Functional Description 4.1 General The L9826 integrated circuit features 8 power low-side-driver outputs. Data is transmitted to the device using the Serial Peripheral Interface, SPI protocol. Outputs 1 and 2 can be controlled parallel or serial. ...

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L9826 Outputs Control Tables : Table 5. Outputs 1, 2: NON1 SPI-bit Output 1, 2 off Figure 5. Output control register structure MSB Q2 4.3 Power outputs characteristics for flyback current, outputs short circuit protection ...

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Functional Description 4.4 Diagnostics The output voltage at all outputs is compared with the diagnostic threshold, typ 0,38 · V Outputs 1 and 2 features dedicated fault latches. The output status signal is filtered and latched. The fault latches ...

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L9826 Figure 6. The Pulse Diagram to Read the Outputs Status Register NCS CLK SDO SDI Table 8. The Structure of the Outputs Status Register MSB Diag2 Diag4 Diag6 Diag8 Diag1 Diag3 Diag5 Diag7 MSB MSB ...

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Application Information 5 Application Information The typical application diagram is shown in Figure 7. Typical Application Circuit Diagram for the L9826 Circuit NON1 Diag1 NON2 V CC Diag2 NCS V CC CLK V CC SDI SDO GND nRES Reset ...

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L9826 6 Package Informations Figure 8. PowerSO20 Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX. A 2.35 2.65 A1 0.10 0.30 B 0.33 0.51 C 0.23 0.32 (1) 12.60 13. 7.40 7.60 e 1.27 H 10.0 ...

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Revision history 7 Revision history Date Revision 22 April 2004 26 July 2005 16/17 7 Initial release in EDOCS. Updated the Layout look & feel. 8 Modify value R in Features ON CD00002120 L9826 Changes ...

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L9826 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its ...

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