L9651
SMART QUAD SWITCH
■
■
■
■
■
■
Modified VDMOS Power Stage (U
RDSON < 500 mOhm (T
CMOS Compatible Inputs
Enable Input (Reset) j
= 25°C)
DSBR
Outputs Capable of up to 2.2 Amperes
> 80V)
■
Outputs Internally Clamped at 70V for Fast
Inductive Load Switch Off
Wide operating supply voltage from 4.7V up to
30V
■
■
■
DIAGNOSTIC FUNCTIONS
Open Load Detection (Output off, 100
s- filtering time)
Short to Ground Detection (Output off, 100
s - filtering time)
■
■
■
■
■
Short to Battery Detection (Output on)
Over temperature detection (Output on)
Storage of last fault in 8 Bit - Serial Register
Fault Signal Indication at Serial Data Out without need to read out the Serial Interface
Daisy Chainable Serial Diagnostic
BLOCK DIAGRAM
PowerSO-20
ORDERING NUMBER: L9651
■ Serial Interface Clock Frequency up to 500kHz
DESCRIPTION
The L9651 consists of four identical low side power switches. A serial diagnostic interface indicates failure mode of each switch (short circuit to V
BAT
or ground and open load or over temperature).
Turn On
V
BAT
Data In
Underv. Shutd.
●
Clock Sync.
References Serial Diagnostic
Four Fold
Logic
Gate
Control
Fault Detection
●
●
●
Short Circuit
Protection
●
●
Ground
September 2013 1/9
L9651
PIN CONNECTION (Top view)
GND
N.C.
IN1
IN2
OUT1
VBAT
OUT2
DO
CL
GND
4
5
6
7
8
9
10
1
2
3
SO20POW
20
19
18
17
16
15
14
13
12
11
GND
N.C.
IN4
IN3
OUT4
R
OUT3
DI
SY
GND
PIN FUNCTION
N°
1, 10,
11, 20
Pin
GND
12
13
14
7
8
9
2, 19
3
4
5
6
15
16
17
18
Ground
N.C.
IN1
IN2
Not Connected
Input 1
Input 2
OUT1 Output 1
VBAT Supply Voltage
OUT2 Output 2
DO
CL
Serial Data Out
Clock
SY Synchronization
DI Serial Data In
OUT3 Output 3
R Reset
OUT4 Output 4
IN3 Input 3
IN4 Input 4
Function
2/9
ABSOLUTE MAXIMUM RATINGS
Symbol
T
STG
Storage Temperature
Parameter
T
J
Operating Junction Temperature
V
BAT
V
BATtr
V
OUT
V
OUTtr
E
CL
DC Supply Voltage
Transient Supply Voltage; t < 400ms
Output Voltage
Transient Output Voltage; during clamping
Output Clamping energy; repetition rate < 100 Hz
-I
OUT
Output reverse current
V
R
,V
INi
,V
DI,
V
CL
V
SY
Control Input voltage
V
DO
Control Output voltage
THERMAL DATA
Symbol
R th j-case
Parameter
Thermal Resistance Junction to Case
Value
-55 to 150
-40 to 150
-2 to 30
40
65
78
10
2
-0.3 to 6.5
-0.3 to 6.5
Value
2.5
Unit
°C/W
ELECTRICAL CHARACTERISTCS (6.5V < V
BAT
< 25V, -40 < T
J
< 150°C)
Symbol Parameter Test Condition
Supply Voltage
V
BATU
Turn on threshold voltage
I
BAT
Supply current V
BAT
= 14V
V
OUTi
> 0V
Output stage
R
DSON
On resistance V
BAT
= 14V
T
J
= 25°C; I out
= 1A
Min.
2.0
4
V
BAT
= 14V
T
J
= 150°C; I out
= 1A
I out
= 0.5 A
I
V
CL
OUTi
Clamping voltage, inductive load
Over current shutdown
(Shutdown latch resets with pos. slope at INi)
T
J
= -40°C
T
J
= 25°C
T
J
= 150°C
Output leakage current see: Open load diagnostic current
63
3.0
2.5
2.2
Typ.
10
70
Max.
Unit
4.7
15
500
850
76
4.3
3.7
3.5
V mA m
m
V
A
A
A
3/9
L9651
V
V mJ
A
V
Unit o
C o
C
V
V
V
L9651
ELECTRICAL CHARACTERISTCS (continued)
Symbol Parameter
Logic Inputs IN1...IN4, SY, CL, DI, R
V
INiLH
V
SYLH
V
CLLH
V
RLH
V
DILH
Input High level
Input Low level V
INiHL
V
SYHL
V
CLHL
V
RHL
V
DIHL
V
INih
V
SYh
V
CLh
V
Rh
V
DIh
Hysteresis
- I
INi
- I
SY
- I
C L
- I
R
Input current IN1 ... IN4, SY, CL, R
(Internal pull up current source)
Test Condition
V
INi
= 0V
V
SY
= 0V
V
CL
= 0V
V
R
= 0V
V
DI
= 0V - I
DI
Input current DI
(Internal pull up current source)
Timing t don t doff s on s off t oc t v
Turn on delay
Turn off delay
Switch on slew rate
Switch off slew rate
Over current detection time
Open load filtering time t v f
CL t vDV t vset t vhold
Short to GND filtering time
Serial clock frequency
DO: Datavalidtime
DI: Datasettlingtime
DI: Dataholdtime
Diagnostic
V
BATDU
Under voltage threshold
Serial Data output (External pull up required)
V
DO
Data output low voltage I
DO
< 1.6mA
7.5V < V
BAT
< 22V
| I
DO
| Data output leakage current
Min. Typ.
Max.
Unit
3.5
6.5
V
-0.3
0.2
1.5
V
1 V
10
10
40 120
80
A
120 220 250
A
60
60
0
0.03
0.5
0
7.5
7.5
10
15
0.5
100
100
200
200
500
1
s
s
V/
s
V/
s
s
s
s kHz
s
s
s
7.5
V 4.7
0 0.45
10
V
A
4/9
L9651
ELECTRICAL CHARACTERISTCS (continued)
Symbol Parameter
Output voltage monitoring Output off
V
OL
Open load threshold voltage
(fault detected if V
OUTi
< V
OL
)
V
SG
Short to GND threshold voltage
(fault detected if V
OUTi
< V
SG
)
Open load diagnostic current Output off
Open load output voltage
Test Condition
7.5V < V
BAT
< 22V
7.5V < V
BAT
< 22V
- I
OUTi
I
OUTi
Output current
Output current
I
OUT
= 0 A
V
INi
= 5V
7.5V < V
BAT
< 22V
V
OUT
= 1V
V
INi
= 5V
V
OUT
= V
BAT
V
INi
= 5V
7.5V < V
BAT
< 22V
Overload Diagnostic
Over temperature diagnostic
I
OUTi
Over current
T
J
T
J
= -40°C
T
J
= 25°C
T
J
= 150°C
Figure 1. Typical Timing Diagram for Serial Diagnostic
Fault: Short to Battery or over temp.
o. k.
Fault: Open Load or Short to GND o. k.
DI
H
L
< t v
Di1 Di2 Di3 t vhold
SY
H
L t vset
CL
H
L
DO
H
L
1/f
CL
Min. Typ.
50
200
3.0
2.5
2.2
2/3V
BAT
1/3V
BAT
1/2V
BAT
100
320
175
Max.
150
500
4.3
3.7
3.5
Unit t vDV
Bit1 Bit2 Bit3 Bit4 Bit5 Bit6 Bit7 Bit8
Di1 Di2 Di3 t v
Shift Register Data Frozen Reset of Shift Register
A
A
A
A
°C
A
5/9
L9651
Figure 2. Serial Interface Error Coding
BIT 1 BIT 2 BIT 3 BIT 4 BIT 5 BIT 6 BIT 7 BIT 8 BIT n
OUTPUT 1 OUTPUT 2 OUTPUT 3 OUTPUT 4 DI
H H
L H
H L
L L o.k.
open load/over temperature short to battery short to ground
Figure 3. Output voltage TIMING for inductive load
V
INi
V
INiH
V
INiL
V
OUTi
V
CL
0.8V
CL
V
BAT
0.8V
BAT
0.2V
BAT s
ON td on td off s
OFF
6/9 t t
Figure 4. Application Circuit
V
BAT
●
5 Volt
Regulator
●
RESET
●
V
CC
●
R
●
Controller
●
IN1
IN2
IN3
IN4
DO
SY
CL
●
●
●
●
● ● ● ●
R
OUT1
●
OUT2
OUT3
OUT4
DI
●
●
●
●
●
R
DO
SY
Further driver ICs with
4-Wire-
Diagnostic
DI
CL
L9651
7/9
L9651
DIM.
MIN.
A a1 a2 a3 b
0.1
c
D (1)
D1 (2)
E
0
0.4
0.23
15.8
9.4
13.9
e e3
E1 (1) 10.9
mm
TYP.
MAX.
MIN.
1.27
11.43
3.6
0.3
3.3
0.1
9.8
14.5
0.004
0.000
0.53
0.016
0.32
0.009
16 0.622
0.370
0.547
inch
TYP.
0.050
0.450
MAX.
0.142
0.012
0.130
0.004
0.021
0.013
0.630
0.386
0.570
H h
L
N
E2
E3
G
5.8
0
15.5
0.8
11.1
0.429
2.9
6.2
0.1
15.9
1.1
1.1
0.228
0.000
0.610
0.031
8˚(typ.)
S
T 10
8˚(max. )
0.394
(1) “D and E1” do not include mold flash or protusions.
- Mold flash or protusions shall not exceed 0.15mm (0.006”)
- Critical dimensions: “E”, “G” and “a3”.
(2) For subcontractors, the limit is the one quoted in jedec MO-166
0.437
0.114
0.244
0.004
0.626
0.043
0.043
N N b
DETAIL A e3
H
R e a2 A
DETAIL B
OUTLINE AND
MECHANICAL DATA
Weight: 1.9gr
lead
JEDEC MO-166
PowerSO-20
E a1 c
DETAIL A
D slug
20 11 a3
DETAIL B
Gage Plane
BOTTOM VIEW
S
0.35
L
E2 E1
- C -
SEATING PLANE
G C
(COPLANARITY)
1 1
T
0
E3
D1
PSO20MEC h x 45˚
0056635 I
8/9
L9651
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