STMICROELECTRONICS L4953K

L4953K

MULTIFUNCTION VOLTAGE REGULATOR FOR CAR RADIO
3 OUTPUTS:
8.25V (500mA); 5V (1A); 5V (100mA)
STANDBY
OUT1 (8.25V) AND OUT2 (5V) WITH INDEPENDENT ENABLE CONTROL FOR STANDBY MODE
1.5A HIGH SIDE DRIVER WITH CLAMPED
OUTPUT (16V)
LOGIC OUTPUT FOR:
– SUPPLY UNDERVOLTAGE (LVW)
– OVERVOLTAGE(FAULT)
– THERMAL PROTECTION (FAULT)
RESET FUNCTION
IGNITION COMPARATOR
REVERSE BATTERY AND LOAD DUMP
PROTECTION
THERMAL SHUTDOWN
Multiwatt 15
ORDERING NUMBER: L4953K
low voltage or no voltage condition is occuring.
In stand-by output is active as long as possible
even when in thermal shutdown or any other fault
conditions.
The STCAP pin allows the use of a reserve supply capacitor that will hold enough energy for the
5V Stand-by line to allow the µP to store data.
DESCRIPTION
The L4953K contains a triple voltage regulator
and a power switch.
The IC includes a monitoring circuit to warn if a
BLOCK DIAGRAM
VS
7
LOAD DUMP
AND REV
BATT PROT
SIG GND
EN 5V
3
12
EN 16V
POW GND
9
8.25V, 500mA
REGULATOR
SWITCHED
10
16V, 1.5A
VOLTAGE CLAMP
SWITCHED
4
OUT 5V
OUT 8.25V
OUT 16V
15
VCAP
5
PROT
OVERVOLTAGE
UNDERVOLTAGE
THERMAL PROT
RESET
Vref1 LVW THRESHOLD
Vref2 Reset THRESHOLD
IGNITION THRESHOLD
8
6
D94AU213B
June 2000
5V, 1000mA
REGULATOR
SWITCHED
STAND-BY 5V
2
REF
GEN
IGN INP
11
1
STCAP
EN 8.25V
5V, 100mA
REGULATOR
STAND-BY
IGN OUT
13
LVW/FAULT
14
RESET
1/8
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
L4953K
ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
V SDC
DC Operating Supply Voltage
VSTR
Transient Supply Voltage
Value
Unit
–14 to 28
V
50
V
IO
Output Current
internally limited
Top
Operating Temperature Range
–40 to 85
°C
Tstg
Storage Temperature
–55 to 150
°C
PIN CONNECTION (Top view)
TAB CONNECTED TO PIN 8
15
EN 16V
14
RESET
13
LVW/FAULT
12
STCAP
11
STBY5V
10
OUT 8.25V
9
OUT 5V
8
PGND
7
VS
6
IGNOUT
5
IGNINP
4
OUT 16V
3
SGND
2
EN 8.25V
1
EN 5V
D94AU054B
THERMAL DATA
Symbol
Rth j-case
2/8
Parameter
Thermal Resistance Junction-case
Value
Unit
2
°C/W
L4953K
ELECTRICAL CHARACTERISTICS (VS = 14V, Tamb = 25°C, unless otherwise specified.)
Symbol
Parameter
VS
Operating Supply Voltage
En
Output Noise Voltage
Tshu d
Test Condition
Min.
Typ.
Max.
18
V
200
400
µV
11
Any reg. supply,
f = 100Hz to 200KHz
Thermal Shutdown Junction
Temperature
Unit
°C
155
5V STAND-BY OUTPUT VOLTAGE
V5st-by
Stand-by Output Voltage
ILoad = 5mA
∆Vline
Line Regulation
11V < VS < 16V
∆Vload
Load Regulation
Vdropout
Dropout Voltage
Quiescent Current @ Stand-by
Iqst-by
4.75
5
5.25
V
5
50
mV
5mA < Iout < 100mA
45
150
mV
Iout = 100mA, VS = 5.5V
0.2
0.6
V
ILoad = 5mA
0.3
0.5
mA
5
5.25
V
5V/1000mA SWITCHED OUTPUT VOLTAGE
Vout5
5V Output Voltage
no load
4.75
∆Vline
Line Regulation
7V < VS < 18V
5
50
mV
∆Vload
Load Regulation
5mA < Iout < 1A
12
50
mV
Vdropout
Dropout Voltage
Iout = 1A, VS = 5.5V
1
1.5
V
Quiescent Current
75mA < Iout < 1A
30
100
mA
1.5
V
Iq
SWon
Switch ON
SW off
Switch OFF
3.5
V
SW hyst
Switch Hysteresis
100
200
350
mV
R in
Input Impedance
25
40
50
KΩ
7.9
8.25
5
12
0.4
10
75
8.6
50
50
0.9
25
V
mV
mV
V
mA
dB
8.25V/500mA SWITCHED OUTPUT VOLTAGE
Vout
∆Vline
∆Vload
Vdropout
Iq
SVR
SWon
SW off
SW hyst
R in
8.25V Output Voltage
Line Regulation
Load Regulation
Dropout Voltage
Quiescent Current
Supply Voltage Rejection
no load
11V < VS < 18V
Iout = 500mA
Iout = 500mA, 5.5V < VS < 8.8V
Iout = 500mA
f = 100Hz
f = 10KHz
Switch ON
Switch OFF
Switch Hysteresis
Input Impedance
55
40
3.5
100
25
200
40
1.5
350
50
V
V
mV
KΩ
16.2
V
HIGH SIDE DRIVER WITH CLAMPED OUTPUT (16V)
Vout16
Max. Output Voltage
VS = 18V
15
Output Continuous Current
VS = 15V
1.5
Vdropout
Dropout Voltage
Iout = 1A, 6V < VS < 15V
SWon
Switch ON
SW off
Switch OFF
IO
A
0.4
0.9
V
1.5
V
3.5
V
SW hyst
Switch Hysteresis
100
200
350
mV
R in
Input Impedance
25
40
50
KΩ
3/8
L4953K
ELECTRICAL CHARACTERISTICS (continued)
LVW/FAULT (referred to VS)
Symbol
THON
LVW
THOFF
LVW
∆(LVW-out 8.25)
HYST
OUTLW
Ileak
Min.
Typ.
Max.
Unit
LVW ON Threshold
Parameter
Test Condition
8.55
9.00
9.45
V
LVW OFF Threshold
8.75
9.20
9.65
LVW-Vout 8.25
0.5
0.65
Threshold Hysteresis
50
200
V
V
350
mV
LVW Output Voltage
1.5
V
Leakage Current
50
µA
V
RESET (referred to 5V st-by)
THON reset
Reset ON Threshold
3.6
3.8
4
THOFF
Reset OFF Threshold
3.8
4
4.2
V
Reset Threshold Hysteresis
50
100
250
mV
HYST
OUT
reset
reset
reset
Ileak
Reset Output Voltage
1.5
V
Reset Leakage Current
50
µA
IGNITION
TH ign
HYST
IGN
ign
high
Ign Comparator Positive
Threshold
5.5
6.5
7.5
V
Ign Comparator Threshold
Hysteresis
100
300
500
mV
Ignition Comparator Output High
3.5
Vst-by
V
CIRCUIT CONFIGURATION - PIN EQUIVALENT CIRCUITS
PIN 1: EN 5V
PIN 2: EN 8.25V
PIN 4: OUT 16V
20K
2.1K
6.5K
18.5K
10K
D95AU402
4/8
D95AU403
L4953K
PIN 5: ING INP
PIN 6: IGN OUT
36.3K
9.7K
5.7V
7K
5.3K
D95AU404
PIN 7: VS
D95AU405
PIN 9: OUT 5V
7.5V
23K
7.5V
7.5V
780K
5.7V
33K
4K
9K
D95AU407
28K
D95AU406
PIN 10: OUT 8.25V
PIN 11: STAND-BY 5V
3.8K
D95AU408
123K
D95AU409
5/8
L4953K
PIN 12: ST-CAP
PIN 13: LVW / FAULT
7.5V
7.5V
7.5V
30K
D95AU410
D95AU411
PIN 14: RESET
PIN 15: EN 16V
20K
7.5V
4K
18.5K
2.1K
70K
10K
D95AU412
D95AU413
6/8
L4953K
DIM.
A
B
C
D
E
F
G
G1
MIN.
mm
TYP.
MAX.
5
2.65
1.6
MIN.
0.55
0.75
1.52
18.03
0.019
0.026
0.040
0.690
1
0.49
0.66
1.02
17.53
1.27
17.78
H1
H2
L
L1
L2
21.9
21.7
17.65
22.2
22.1
L3
L4
L7
M
M1
17.25
10.3
2.65
4.25
4.63
17.5
10.7
S
S1
Dia1
inch
TYP.
MAX.
0.197
0.104
0.063
OUTLINE AND
MECHANICAL DATA
0.039
19.6
0.050
0.700
0.022
0.030
0.060
0.710
0.772
20.2
22.5
22.5
18.1
0.862
0.854
0.695
0.874
0.870
17.75
10.9
2.9
4.85
5.53
0.679
0.406
0.104
0.167
0.182
0.689
0.421
1.9
1.9
2.6
2.6
0.075
0.075
0.102
0.102
3.65
3.85
0.144
0.152
4.55
5.08
0.179
0.200
0.795
0.886
0.886
0.713
0.699
0.429
0.114
0.191
0.218
Multiwatt15 V
7/8
L4953K
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. Specification 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.
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