L5959
Multifunction voltage regulator for car radio
Features
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Four outputs
– 8.5V @ 200mA (V8P5)
– 8/10V @ 1000mA selectable 10V or 8V
(V810)
– 3.3V @ 100mA permanent (VSTBY)
– 3.3V @ 800mA (VREGSW)
Two protected high side driver (HSD1, HSD2)
Reset function
Battery voltage (under/over) warning output
Load dump protection
Independent thermal shutdown on all
regulators and HSDs
Overcurrent limitation
Storage CAP output (STCAP)
Small CAP required by stability of regulators
All pins ESD protected
Device summary
Order code
L5959
Package
Multiwatt15
Multiwatt15
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Description
The L5959 contains a four voltage regulator and
two protected HSDs. HSDs are protected against
loss of ground and loss of battery.
The IC includes a monitoring circuit for detection.
The IC features a very low quiescent current in
stand-by and independent thermal shutdown.
Table 1.
Packing
Tube
September 2013
Rev 3
1/19
www.st.com
1
Contents
L5959
Contents
1
2
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1
Pins connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3
Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1
3.2
3.3
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4
5
6
Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
L5959
List of tables
List of tables
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Enable logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3/19
List of figures
L5959
List of figures
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Timing diagram of regulators and HSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
STCAP and RST diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
VBATVW (over/under voltage warning) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Independent thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
RST glitch rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Enable on/off delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Multiwatt15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 17
4/19
L5959
Block diagram
1
Figure 1.
Block diagram
Block diagram
VBAT
T HSD
wo
HSD1
HSD2
V810
V810
STCAP
VSTBY
VSTBY
VREGSW
VREGSW
V8P5
V8P5
VBATVW
LO
AD-DUMP
RST
EN0
EN1
EN2
EN
ABLE
RESET
RSTDLY
Table 2.
EN2
0
0
0
0
1
1
1
1
Enable logic
EN1
0
0
1
1
0
0
1
1
EN0
0
1
0
1
0
1
0
1
VREGSW
Off
On
On
On
On
On
On
On
V8P5
Off
On
Off
On
On
On
On
On
HSD1
Off
On
Off
On
On
On
On
On
V810
(8V)
Off
Off
Off
Off
Off
Off
On
On
V810
(10V)
Off
On
Off
Off
Off
On
Off
Off
HSD2
Off
On
Off
On
Off
Off
Off
On
5/19
stm32/stm8
