SGS Thomson Microelectronics L9825 Datasheet
L9825
1
2
3
4
5
6
7
8
Octal Low-side Driver For Resistive and Inductive Loads With
Serial / Parallel Input Control, Output Protection and Diagnostic
PRODUCT PREVIEW
■
OUTPUTS CURRENT CAPABILITY UP TO
1A, 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
1 TO 6
■
SHORT CIRCUIT CURRENT LIMITATION
AND SELECTIVE THERMAL SHUTDOWN AT
OUTPUTS 7 AND 8
■
OUTPUT STATUS DATA AVAILA BLE ON THE
SPI
≤ 0,75Ω AT TJ = 25°C
ON
CC
PowerSO20
ORDERING NUMBER: L9825
DESCRIPTION
L9825 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.
BLOCK DIAGRAM
V
CC
V
CC
NON1
Q1
Diag1
NON2
V
Q2
CC
V
CC
V
CC
V
CC
V
CC
Diag2
SPI
Shift Register
V
CC
Reset
Undervoltage
RESET
NCS
CLK
SDI
SDO
nRES
July 2001
This is preliminary information on a new product now in development. Details are subject to change without notice.
Interface
Outp ut Latc h
GND
Q1
Q2
Q3
Q4
Q5
Q6
Q7
Q8
Diag1
Diag2
Diag3
Diag4
Diag5
Diag6
Diag7
Diag8
Reset
1
2
3
S
Latch / Driver
Fault Latch
S
Q3
Diag3
Q4
Diag4
Q5
Diag5
Q6
Diag6
S
Q7
Current Control
Overtemperature Detection
Diag7
Q8
Diag8
Latch / Driver
Latch / Driver
R
R
+
-
V
DG
CH1
CH2
R
+
-
V
DG
CH3
CH4
CH5
CH6
+
-
V
DG
CH7
CH8
OUT
I
OL
OUT
OUT
I
OL
OUT
OUT
OUT
OUT
I
OL
OUT
1/11
L9825
PIN CONNECTION
(Top view)
GND GND
NON1 NCS
SDO
OUT1
OUT3
OUT5
OUT7
SDI
CLK
GND
1
2
3
4
5
6
7
8
9
POWSO20
PIN DESCRIPTION
N° Pin Function
1 GND device ground
2 NON1 control input 1
3 SDO ser ial data outpu t
20
19
18
17
16
15
14
13
12
11
nRes
OUT8
OUT6
OUT4
OUT2
Vcc
NON2
GND10
4 Out 1 output 1
5 Out 3 output 3
6 Out 5 output 5
7 Out 7 output 7
8 SDI serial data input
9 CLK serial clock
10 GND device ground
11 GND device ground
12 NON2 control input 2
13 V
CC
supply voltage
14 Out 2 output 2
15 Out 4 output 4
16 Out 6 output 6
17 Out 8 output 8
18 nR es asynchronous nRes
19 NCS chip select (active low)
20 GND device ground
2/11
ABSOLUTE MAXIMUM RATINGS
For voltages and currents applied externally to the device:
Symbol Parameter Value Unit
L9825
V
CC
Inputs and data lines
V
IN
V
IN
I
IN
Supply voltage -0.3 to 7 V
(NONx, NCS, CLK, SDI, nRes)
Voltage (NONx, NCS, CLK, SDI) -0.3 to 7 V
Voltage (nRes) -0.3 to 7 V
Protection diodes current
1)
-20 to 20 mA
(T ≤ 1ms)
Outputs
Notes: 1. All inputs ar e protected against ESD according to MI L 883C; tested wi t h HBM at 2KV. It c orresponds to a dissipate d energy
(Out1 ... Out8)
V
I
E
OUTcl
OUTc
OUT
Continuous output voltage -1.0 to 45 V
Output current
Output clamp energy (I
E ≤ 0,2mJ.
2. Transient pul ses in accordance to DIN40839 part 1, 3 and ISO 7637 Pa rt 1, 3.
2)
≤ 0.5A) 20 mJ
OUT
-3 to 2.05 A
For currents determined within the device:
Outputs (Out1 ... Out8)
I
OUT
I
OUT
Output current (Out1 ... Out6) 2.05 A
Output current (Out7, Out8) 1.75 A
Total average-current all outputs
3. When oper ating the devi ce with short circuit at mor e than 2 outputs at the same tim e, damage due to electrical overstress m ay
occur.
3)
4.5 (Min.) A
THERMAL DATA
Symbol Parameter Value Unit
Thermal shutdown
T
JSC
Thermal resistance
R
thjc-one
R
thjc-all
Thermal shutdown threshold Min.
Typ.
150
165
Single output (junction case) Max. 13 °C/W
All outputs (junction case) Max. 1.6 °C/W
°C
°C
3/11
L9825
ELECTRICAL CHARACTERISTCS
(4.5V ≤ VCC ≤ 5.5V; -40°C ≤ TJ ≤ 150°C; unless otherwise specified)
Symbol Parameter Test Condition Min. Typ. Max. Unit
Supply voltage
I
ccSTB
I
ccOPM
∆I
Standby current without load 5 mA
Operating mode I
during reverse output
∆I
CC
CC
current
Inputs
(NONx. NCS, CLK, SDI, nRes)
V
V
V
R
C
Low level -0.3
INL
High level
INH
Hysteresis voltage 0.85 V
hyst
I
Input current VIN = V
IN
Pullup resistance 50 250 kΩ
IN
Input capacitanc e 10 pF
IN
Serial data outputs
V
SDOH
V
SDOL
I
SDOL
C
High output level I
Low output level I
Tristate leakage current NCS = high; 0V ≤ V
Output capacitance f
SDO
Outputs OUT 1 ... 8
OUT1 ... 8
= 500mA
5mA
SPI - CLK = 3MHz
NCS = LOW
SDO no load
I
= -3A 100 mA
out
0.2·V
CC
0.7·V
CC
CC
= -4mA
SDO
= 3,2mA 0.4 V
SDO
≤ V
SDO
= 300kHz 10 pF
SDO
CC
VCC -0.4
-10 10 µA
VCC+0.3
10 µA
V
V
V
I
OUTL1 - 8
I
OUTL1 - 8
I
OUTL1 - 8
V
R
DSon
C
Leakage current OUTx = OFF; V
Leakage current OUTx = OFF; V
Leakage current OUTx = OFF; V
Output clamp voltage 1mA ≤ I
clp
On resistance OUT 1 ... 8 I
Output capacitance V
OUT
Outputs short circuit protection
I
SBC
I
t
SCB
Overcurrent shutoff threshold OUT1 ... OUT6 1.05 1.4 2.05 A
Short circuit current limitation OUT7; OUT8 1.05 1.4 1.75 A
LIM
Delay shutdown for output 1 ... 6; I
4/11
= 25V; VCC =
OUTx
100 µA
5V
= 16V; VCC =
OUTx
100 µA
5V
= 16V; VCC =
OUTx
10 µA
1V
≤ I
; I
clp
outp
= 10mA
test
45 60 V
with correlation
= 500mA; Tj = +150°C 1.5 W
OUT
= 16V; f = 1MHz 300 pF
OUT
OUT
≤ 1/2 I
SBC
0.2 3 12 µs
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