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PDF L9825 Data sheet ( Hoja de datos )
| Número de pieza | L9825 | |
| Descripción | Octal Low-side Driver For Resistive and Inductive Loads With Serial / Parallel Input Control/ Output Protection and Diagnostic | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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L9825
Octal Low-side Driver For Resistive and Inductive Loads With
Serial / Parallel Input Control, Output Protection and Diagnostic
PRODUCT PREVIEW
s OUTPUTS CURRENT CAPABILITY UP TO
1A, RON ≤ 0,75Ω AT TJ = 25°C
s PARALLEL CONTROL INPUTS FOR
OUTPUTS 1 AND 2
s SPI CONTROL FOR OUTPUTS 1 TO 8
s RESET FUNCTION WITH RESET SIGNAL AT
NRES PIN OR UNDERVOLTAGE AT VCC
s INTRINSIC OUTPUT VOLTAGE CLAMPING
AT TYP. 50V
s OVERCURRENT SHUTDOWN AT OUTPUTS
1 TO 6
s SHORT CIRCUIT CURRENT LIMITATION
AND SELECTIVE THERMAL SHUTDOWN AT
OUTPUTS 7 AND 8
s OUTPUT STATUS DATA AVAILABLE ON THE
SPI
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 in-
ductive loads are driven. Chip Select and Serial Pe-
ripheral Interface for outputs control and diagnostic
data transfer. Parallel Control inputs for two outputs.
BLOCK DIAGRAM
VCC
NON1
VCC
13
2
Q1
S Latch / Driver
R
OUT1
IOL
Diag1
NON2
NCS
VCC Q2
Diag2
VCC
CLK
VCC
SDI
SDO
VCC
Fault Latch
Q1
Q2
Q3 Q3
Q4
Q5
Q6
Q7
Q8
Diag1
Diag2
Diag3
Diag4
Diag5
Diag6
Diag7
Diag8
Diag3
Q4
Diag4
Q5
Diag5
Q6
Diag6
S
Latch / Driver
R
nRES
VCC Q7
Reset
VCC
Reset
Undervoltage
RESET
Diag7
Q8
Diag8
GND
S Latch / Driver
Current Control
R
Overtemperature Detection
+
- VDG
CH1
CH2
OUT2
OUT3
IOL
+
- VDG CH3
CH4
CH5
CH6
OUT4
OUT5
OUT6
OUT7
IOL
+
- VDG CH7
CH8
OUT8
July 2001
This is preliminary information on a new product now in development. Details are subject to change without notice.
1/11
1 page  
L9825
ELECTRICAL CHARACTERISTCS (continued)
(4.5V ≤ VCC ≤ 5.5V; -40°C ≤ TJ ≤ 150°C; unless otherwise specified)
Symbol
Parameter
Test Condition
Min.
Diagnostics
VDG Diagnostic threshold voltage
0.32·VCC
IOL Open load detection sink current Vout = VDG
20
tdf Diagnostic detection filter time for
output 1 & 2 on each diagnostic
condition
15
Outputs timing
tdon1 Turn ON delay of OUT 1 and 2
NON1, 2 = 50% to VOUT = 0.9·Vbat
NCS = 50% to VOUT = 0.9·Vbat
tdon2 Turn ON delay of OUT 3 to 8
NCS = 50% to VOUT = 0.9·Vbat
tdoff Turn OFF delay of OUT 1 to 8
NCS = 50% to VOUT = 0.1·Vbat
NON1, 2 = 50% to VOUT = 0.1·Vbat
dUon1/dt Turn ON voltage slew-rate
For output 3 to 8; 90% to 30% of
Vbat; RL = 500Ω; Vbat = 16V
0.7
dUon2/dt Turn ON voltage slew-rate
For output 1 and 2; 90% to 30%
of Vbat; RL = 500Ω; Vbat = 16V
2
dUoff1/dt Turn OFF voltage slew-rate
For output 1 to 8; 30% to 90% of
Vbat; RL = 500Ω; Vbat = 16V
2
dUoff2/dt Turn OFF voltage slew-rate
For output 1 to 8; 30% to 80% of
Vbat; RL = 500Ω; Vbat = 0.9 · Vclp
2
Serial diagnostic link (Load capacitor at SDO = 100pF)
fclk Clock frequency
50% duty cycle
3
tclh Minimum time CLK = HIGH
160
tcll Minimum time CLK = LOW
160
tpcld Propagation delay
CLK to data at SDO valid
4.9V ≤ VCC ≤ 5.1V
tcsdv
NCS = LOW to data at SDO
active
tsclch CLK low before NCS low
Setup time CLK to NCS change H/L 100
thclcl CLK change L/H after NCS = low
100
tscld SDI input setup time
CLK change H/L after SDI data
valid
20
thcld SDI input hold time
SDI data hold after CLK change H/L
tsclcl CLK low before NCS high
150
thclch CLK high after NCS high
150
tpchdz NCS L/H to output data float
NCS pulse filter time
Multiple of 8 CLK cycles
Typ.
Max.
0.4·VCC
100
50
5
10
10
3.5
10
10
15
100
100
20
100
Unit
V
µA
µs
µs
µs
µs
V/µs
V/µs
V/µs
V/µs
MHz
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
5/11
5 Page 
L9825
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 use. No license is granted
by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject
to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not
authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics.
The ST logo is a registered trademark of STMicroelectronics
® 2001 STMicroelectronics - All Rights Reserved
STMicroelectronics GROUP OF COMPANIES
Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain
- Sweden - Switzerland - United Kingdom - U.S.A.
http://www.st.com
11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet L9825.PDF ] | |
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