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September 2013 Rev 3 1/17

L9822E

Octal serial solenoid driver

Features

■ Eight low R

DSon

DMOS outputs (0.5  @ I

1 A @ 25 °C V

= 5 V ± 5 %)

■ 8 bit serial input data (SPI)

■ 8 bit serial diagnostic output for overload and

open circuit conditions

■ Output short circuit protection

■ Chip enable select function (active low)

■ Internal 36 V clamping for each output

■ Cascadable with another octal driver

■ Low quiescent current (10 mA Max.)

■ Multipower BCD technology

■ Package Multiwatt 15 and PowerSO-20

Description

The L9822E is an octal low-side solenoid driver

realized in Multipower BCD technology

particularly suited for driving lamps, relays and

solenoids in automotive environment. The DMOS

outputs L9822E has a very low power

consumption.

Data is transmitted serially to the device using the

Serial Peripheral Interface (SPI) protocol.

Status monitor function is available on all output

lines.

PowerSO-20

Multiwatt 15

Table 1. Device summary

Order code Package Packing

L9822E Multiwatt 15 Tube

L9822EPD PowerSO-20 Tube

www.st.com

Summary of content (17 pages)

PAGE 1
L9822E Octal serial solenoid driver Features ■ Eight low RDSon DMOS outputs (0.5  @ IO = 1 A @ 25 °C VCC = 5 V ± 5 %) ■ 8 bit serial input data (SPI) ■ 8 bit serial diagnostic output for overload and open circuit conditions ■ Output short circuit protection ■ Chip enable select function (active low) ■ Internal 36 V clamping for each output ■ Cascadable with another octal driver ■ Low quiescent current (10 mA Max.
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Contents L9822E Contents 1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 2 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.1 3 4 Pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.1 Absolute maximum ratings . . .
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L9822E List of tables List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Pin function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Thermal data. . . .
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List of figures L9822E List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. 4/17 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 PowerSO-20 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Multiwatt 15 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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L9822E 1 Block diagram Block diagram Figure 1. Block diagram RESET 100µs DELAY TRIGGER OUTPUT CE SO Q D CK SCLK INPUT PARALLEL LOAD SHIFT CLOCK Q0 : : : Q7 8 BIT SHIFT REGISTER CLOCK RESET D0 Q7 : : 8 BIT : : : PARALLEL : D7 Q0 LATCH FAULT RESET PARALLEL INPUTS SI SERIAL INPUT 00 INTERNAL ZENER CLAMP CURRENT LIMIT INPUTS OUTPUTS 1. . . . .
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Pin description 2 L9822E Pin description Figure 2. PowerSO-20 pin connection (top view) GND 1 20 GND SO 2 19 SI VCC 3 18 SCLK RESET 4 17 CE OUT7 5 16 OUT0 OUT6 6 15 OUT1 OUT5 7 14 OUT2 OUT4 8 13 OUT3 N.C. 9 12 N.C. GND 10 11 GND D94AT119 Figure 3.
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L9822E 2.1 Pin description Pin description Table 2. Pin function PowerSO20 pin # Multiwatt15 pin # Name 1, 10, 11, 20 8 GND Function Device ground. This ground applies for the logic circuits as well as the power output stages. 2 9 SO Serial output. This pin is the serial output from the shift register and it is tri-stated when CE is high. A high for a data bit on this pin indicates that the particular output is high. A low on this pin for a data bit indicates that the output is low.
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Electrical specifications L9822E 3 Electrical specifications 3.1 Absolute maximum ratings Table 3. Absolute maximum ratings Symbol Parameter Unit VCC DC logic supply voltage – 0.7 7 V VO Output voltage – 0.7 40 V Input transient current (CE, SI, SCLK, RESET, SO): Duration time t = 1 s, VI < 0 VI > VCC II IOdc Tj, Tstg 3.
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L9822E Table 5. Symbol VOREF tUD VOFF Electrical specifications Electrical characteristics (continued) (VCC = 5 V ± 5 %. Tj = – 40 to 125 °C ; unless otherwise specified) Parameter Test Conditions Min. Typ. Max. Unit Fault refer. voltage Output progr. OFF Fault detected if VO > VOREF 1.6 2 V Fault reset delay (after CE L to H transition) See Figure 6. 75 250 µs Output OFF voltage Output pin floating. Output progr.
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Functional description 4 L9822E Functional description The L9822E DMOS output is a low operating power device featuring, eight 1 RDSON DMOS drivers with transient protection circuits in output stages. Each channel is independently controlled by an output latch and a common RESET line which disables all eight outputs. The driver has low saturation and short circuit protection and can drive inductive and resistive loads such as solenoids, lamps and relays.
PAGE 11
L9822E 4.4 Functional description Output stages The output stages provide an active low drive signal suitable for 0.75 A continuous loads. Each output has a current limit circuit which limits the maximum output current to at least 1.05A to allow for high inrush currents. Additionally, the outputs have internal zeners set to 36 volts to clamp inductive transients at turn-off. Each output also has a voltage comparator observing the output node. If the voltage exceeds 1.
PAGE 12
Functional description 4.6 L9822E Fault conditions check Checking for fault conditions may be done in the following way. Clock in a new control byte. Wait 160 µs or so to allow the outputs to settle. Clock in the same control byte and observe the diagnostic data that comes out of the device. The diagnostic bits should be identical to the bits that were first clocked in. Any differences would point to a fault on that output.
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L9822E Functional description Figure 6. Typical application diagram 00 VCC L R Vbat 01 CE 02 MICRO CONTROLLER WITH SPI - bus SI SO L9822E 03 04 SCLK 05 RESET GND 06 07 VCC = 5.0 V +/- 5 % Vbat = 14.0 V +/- 0.5 V R = 30 Ω +/- 5 % L = 10mH +/- 10 % 8 loads up to 0.
PAGE 14
Package information 5 L9822E Package information In order to meet environmental requirements, ST (also) offers these devices in ECOPACK® packages. ECOPACK® packages are lead-free. The category of second Level Interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com. Figure 7.
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L9822E Package information Figure 8. Multiwatt 15 mechanical data and package dimensions DIM. mm MIN. TYP. inch MAX. MIN. TYP. A5 MAX. 0.197 B 2.65 C 1.6 D OUTLINE AND MECHANICAL DATA 0.104 0.063 1 0.039 E 0.49 0.55 0.019 F 0.66 0.75 0.026 0.022 G 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0.030 0.772 H2 20.2 0.795 L 21.9 22.2 22.5 0.862 0.874 0.886 L1 21.7 22.1 22.5 0.854 0.87 0.886 L2 17.65 18.1 0.
PAGE 16
Revision history 6 L9822E Revision history Table 6. 16/17 Document revision history Date Revision Changes 12-Jan-2002 1 Initial release. 27-Oct-2008 2 Document reformatted. Corrected in Table 5: Electrical characteristics, the max. value of the parameter “CI Input capacitance”. 20-Sep-2013 3 Updated Disclaimer.
PAGE 17
L9822E Please Read Carefully: Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale.