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L9524C-TR

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27
List of figures L9524C
4/27
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Shunt sense versus transistor sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4. Control input signal in transistor mode (modes 3 to 6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 5. Permanent switch on of glow plugs at first falling edge in transistor mode (modes 3 to 6) 14
Figure 6. Control input signal in mode 2 for permanent switch on . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 7. Serial diagnostic interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 8. Timing diagram of advanced run-off control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 9. Output timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Figure 10. Mode 1: relay mode, go/no-go diagnostic interface protocol . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 11. Mode 2: relay mode, serial diagnostic interface protocol . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 12. Mode 3: transistor mode, shunt sense, no power regulation . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 13. Mode 4: transistor mode, shunt sense, power regulation . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Figure 14. Mode 5: transistor mode, transistor sense, no power regulation . . . . . . . . . . . . . . . . . . . . 24
Figure 15. Mode 6: transistor mode, transistor sense, power regulation . . . . . . . . . . . . . . . . . . . . . . . 24
Figure 16. SO24 mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
L9524C Block diagram
5/27
1 Block diagram
Figure 1. Block diagram
G1
SP1
SN1
Channel 1
Gate
driver
Failure
monitor
G2
SP2
SN2
Channel 2
Gate
driver
Failure
monitor
SN5
Channel 3
(same as channel 1)
G3
SN3
SP3
Channel 4
(same as channel 2)
G4
SN6
SP4
SN4
Mode input / relay output
IO
CP
Charge
pump
Supply
voltage
monitor
Diagnostic
logic
Control
logic
Program
Diagnostic
output
Control
input
DO
CI
VS
BAT
MS
CUR
OCT
GND
Charge/discharge current
Overcurrent threshold
Voltage
controlled
oscillator
Reference
oscillator
Thermal
shutdown
Pins description L9524C
6/27
2 Pins description
Figure 2. Pin connection (top view)
Table 2. Pins description
Pins # Name Function
1 SP1 Positive sense input, glow plug 1
2 G1 Driver output for external high-side power MOSFET, transistor 1
3 SN1 Negative sense input, glow plug 1
4 SP2 Positive sense input, glow plugs 2 and 5
5 G2 Driver output for external high-side power MOSFET, transistor 2
6 SN5 Negative sense input, glow plug 5
7 SN2 Negative sense input, glow plug 2
8 BAT Battery voltage input
9 DO Diagnostic output
10 VS Supply voltage input
11 CP Charge pump output
12 OCT Overcurrent threshold setting
13 IO
Transistor mode: input for selection of power regulation feature
Relay mode: output to control external relay driver
14 CUR Power MOSFET gate charge/discharge current setting
15 MS
Mode selection input: transistor modes (transistor sense / shunt sense) / relay mode
16 GND Ground pin
17 CI Control input
18 SN4 Negative sense input, glow plug 4
19 SN6 Negative sense input, glow plug 6
20 G4 Driver output for external high-side power MOSFET, transistor 4
21 SP4 Positive sense input, glow plugs 4 and 6
22 SN3 Negative sense input, glow plug 3
23 G3 Driver output for external high-side power MOSFET, transistor 3
24 SP3 Positive sense input, glow plug 3
SP1
G1
SN1
SP2
G2
SN2
SN5
BAT
DO GND
CI
SN4
G4
SN6
SP4
SN3
G3
SP3
1
3
2
4
5
6
7
8
9
22
21
20
19
18
16
17
15
23
10
24
VS MS
SO24
CP CUR
11
14
1312
OCT IO
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P21P22-P24P25-P27

L9524C-TR

Mfr. #:
Buy L9524C-TR
Manufacturer:
STMicroelectronics
Description:
Linear Voltage Regulators Glow Plug System Control IC Six
Lifecycle:
New from this manufacturer.
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