ST L5959 User Manual
Multifunction voltage regulator for car radio
Features
■ 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
Table 1. Device summary
L5959
Multiwatt15
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.
Order code Package Packing
L5959 Multiwatt15 Tube
August 2007 Rev 2 1/19
www.st.com
1
Contents L5959
Contents
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Pins description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Pins connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
4 Timing diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2/19
L5959 List of tables
List of tables
Table 1. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Enable logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Table 3. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 4. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 5. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 6. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3/19
List of figures L5959
List of figures
Figure 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pins connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. Timing diagram of regulators and HSD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 4. STCAP and RST diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5. VBATVW (over/under voltage warning) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 6. Independent thermal shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 7. RST glitch rejection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 8. Enable on/off delay . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. Multiwatt15 (vertical) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . . 17
4/19
L5959 Block diagram
1 Block diagram
Figure 1. Block diagram
VBAT
STCAP
LOAD-DUMP
Tw o H S D
V810
VSTBY
VREGSW
V8P5
HSD1
HSD2
V810
VSTBY
VREGSW
V8P5
VBATVW
RST
EN0
ENABLEEN1
EN2
Table 2. Enable logic
EN2 EN1 EN0 VREGSW V8P5 HSD1
RESET
V810
(8V)
RSTDLY
V810
(10V)
0 0 0 Off Off Off Off Off Off
0 0 1 On On On Off On On
0 1 0 On Off Off Off Off Off
0 1 1 On On On Off Off On
1 0 0 On On On Off Off Off
1 0 1 On On On Off On Off
1 1 0 On On On On Off Off
1 1 1 On On On On Off On
5/19
HSD2
Pins description L5959
2 Pins description
2.1 Pins connection
Figure 2. Pins connection (top view)
15
14
13
12
11
10
VBAT
V810
V8P5
VREGSW
STCAP
VSTBY
9
8
7
6
5
4
3
2
1
D06AU1637
HSD1
GND
VBATVW
EN2
EN1
EN0
RSTDLY
RST
HSD2
6/19
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