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PDF L5962 Data sheet ( Hoja de datos )
| Número de pieza | L5962 | |
| Descripción | Multifunctional Voltage Regulators | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L5962 (archivo pdf) en la parte inferior de esta página. Total 24 Páginas | ||
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L5962
Multiple linear/switching voltage regulator for car-radio
Features
■ Step-down synchronous switching voltage
regulator
– Internal high-side/ Low-side NDMOS
– 1.2 < Vout < 8 V selectable through external
resistors
– 1.2/2.5 A load current selected through
dedicated pin
– 185 kHz free-run frequency
– SYNC function (220 < fsw < 400 kHz)
■ Linear regulators
– 3.3/5 V @ 150 mA standby regulator
selected through dedicated pin
(VSTBYSEL)
– 5/8.5 V @ 350 mA switched linear regulator
enabled and selected through I2C bus
(VLR1)
– 3.3/10 V @ 1 A switched linear regulator
enabled and selected through I2C bus
(VLR2)
■ 2 High side drivers (0.5 V max drop @ 0.5 A)
enabled through I2C bus and equipped with
protection circuit against:
www.DataShee–t4Us.choomrt to ground and battery
– loss of ground and battery
– unsupplied short to battery
■ Reset function with configurable delay (RST,
RSTDLY)
■ I2C bus
PowerSO36 (slug-up)
■ Enable pin to drive to drive switching regulator
and I2C bus logic
■ Under/over voltage battery detector
(VBATVW)
– Under voltage threshold adjustable through
dedicated pin (LVWIN)
■ Load dump protection
■ Independent thermal protection on all
regulators
Description
L5962 is a very versatile device exploiting BCD
technology characteristics to provide a complete
set of regulated voltages covering all the needs of
a car-radio set.
In standby condition the device guarantees
extremely low quiescent current (90 µA max -
40 °C < T < 85 °C) and minimum operating
voltage (4.5 V using an external Schottky diode
for the back-up function).
Table 1.
Device summary
Order code
L5962
L5962TR
Package
PowerSO36
PowerSO36
Packing
Tray
Tape and reel
November 2009
Doc ID 16819 Rev 1
1/24
www.st.com
1
1 page  
L5962
1
Block and application diagram
Block and application diagram
Figure 1. Block diagram
VBATP
Bandgap
External
Storage
SYNCH
LVWIN
VBATVW
RST
RSTDLY
SDA
SCL
EN
Oscillator
UV / OV
Detect
Reset &
Delay
I2Cbus
Logic
www.DataSheet4U.com
VINSW
Reference
POR &
Startup Logic
Clock
Synch
Logic
Switching
Regulator
Standby
Regulator
Linear
Regulator
#1
Linear
Regulator
#2
PH
CBS
CLIM
VFB
VCMP
SOST
VSTBYSEL
VSTBY
VLR1
VINLR2
VLR2
HSD
HSD1
Ground
HSD
HSD2
TAB PGND AGND SUBS VBAT
AC00428
Doc ID 16819 Rev 1
5/24
5 Page 
L5962
Electrical specification
Table 5. Electrical characteristics (continued)
Symbol
Parameter
Test conditions
Min.
VLR1 (5 V)
VoutVLR1-5
LnRVLR1-5
LdRVLR1-5
VdoVLR1-5
IshortVLR1-5
Output voltage
Line regulation
Load regulation
Drop out voltage
Short circuit current limit
OS/USVLR1-5 Overshoot/Undershoot
0 < Iload < 350 mA
6<VBAT<18 V Iload =350 mA
0 < Iload < 350 mA
Iload = 350 mA
-
Iload 0 ↔ 350 mA, t > 50µs
C = 1 µF ceramic
PSRRVLR1-5 Power supply rejection ratio
nVLR1-5 Output noise
TSVLR1-5
Thermal shut-down
temperature
Iload = 170 mA
120 Hz < f < 10 kHz
VBATac=1 Vpp
A-weighted filter
20 Hz < f < 20 kHz
Iload = 5 mA
Temperature rising
HYSTS-VLR1-5
Hysteresis on thermal shut-
down temperature
-
ESRVLR1-5 External filtering capacitor ESR C > 0.5 µF
VLR1 (8.5 V)
4.85
-25
-90
-
500
-
60
-
150
5
-
VoutVLR1-8
LnRVLR1-8
LdRVLR1-8
VdoVLR1-8
www.DataShIeseht4oUrt.VcLoRm1-8
Output voltage
Line regulation
Load regulation
Drop out voltage
Short circuit current limit
OS/USVLR1-8 Overshoot / undershoot
0 < Iload < 350 mA
9.6<VBAT<18VIload=350mA
0 < Iload < 350 mA
Iload = 350 mA
-
Iload 0 ↔ 350 mA, t > 50µs
C = 1 µF ceramic
PSRRVLR1-8 Power supply rejection ratio
nVLR1-8 Output noise
TSVLR1-8
Thermal shut-down
temperature
Iload = 170 mA
120 Hz < f < 10 kHz
VBATac=1 Vpp
A-weighted filter
20 Hz < f < 20 kHz
Iload = 5 mA
Temperature rising
HYSTS-VLR1-8
Hysteresis on thermal shut-
down temperature
-
ESRVLR1-8 External filtering capacitor ESR C > 0.5 µF
8.3
-25
-90
-
500
-
60
-
150
5
-
Typ.
5
-
-
-
650
-
-
-
-
-
-
8.5
-
-
-
650
-
-
-
-
-
-
Max. Unit
5.15 V
+25 mV
- mV
650 mV
850 mA
±3 %
- dB
350 µV
190 °C
15 °C
0.2 Ω
8.7 V
+25 mV
- mV
650 mV
850 mA
±3 %
- dB
350 µV
190 °C
15 °C
0.2 Ω
Doc ID 16819 Rev 1
11/24
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet L5962.PDF ] | |
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