L5957PD ,Voltage regulator with ignition comparator, reset, overcurrent protection, 5V regulator (CAN) with independent enablefeatures a very low quiescent current in The L5957 contains a triple voltage regulator and standby. ..
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L5959 ,Voltage regulator with very low stand-by current, reset, hold, backup, under/over voltage detection, overcurrent limitationFeatures■ Four outputs– 8.5V @ 200mA (V8P5)– 8/10V @ 1000mA selectable 10V or 8V (V810)– 3.3V @ 100 ..
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L5957-L5957PD
Voltage regulator with ignition comparator, reset, overcurrent protection, 5V regulator (CAN) with independent enable
September 2013 Doc ID 14442 Rev 3 1/16
L5957Multifunction voltage regulator for car radio
Features Four outputs: 8.5 V @ 500 mA 5 V @ 300 mA Permanent
–5 V @ 800 mA 3.3 V @ 800 mA2 A high side driver Reset function Ignition comparator Load dump protection Thermal shutdown Overcurrent limitation All pins ESD protected
DescriptionThe L5957 contains a triple voltage regulator and
a power switch.
The IC includes a monitoring circuit for detection.
The IC features a very low quiescent current in
standby.
Table 1. Device summary
Contents L59572/16 Doc ID 14442 Rev 3
Contents Block and pins connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Electrical specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62.1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
L5957 List of tables
Doc ID 14442 Rev 3 3/16
List of tables
Table 1. Device summary. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table 2. Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 3. Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 4. Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
List of figures L5957
4/16 Doc ID 14442 Rev 3
List of figures
Figure 1. Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Pins connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 3. Typical application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Figure 4. Maximum ESR for stability valid for all the regulators outputs . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5. Timing diagram of regulators and power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. Backup and reset diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Hold and thermal protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 8. Ignition buffer diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 9. Protection of the power switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 10. Short circuit diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 11. PowerSO20 (slug up) mechanical data and package dimensions . . . . . . . . . . . . . . . . . . . 13
Figure 12. Multiwatt15 (vertical) mechanical data and package dimensions. . . . . . . . . . . . . . . . . . . . 14
L5957 Block and pins connection diagrams
Doc ID 14442 Rev 3 5/16 Block and pins connection diagrams
Figure 1. Block diagram
Figure 2. Pins connection
Electrical specifications L5957
6/16 Doc ID 14442 Rev 3
2 Electrical specifications
2.1 Absolute maximum ratings
2.2 Thermal data
2.3 Electrical characteristics
VS = 14.4 V; Tamb = 25 °C; unless otherwise specified.
Table 2. Absolute maximum ratings
Table 3. Thermal data
Table 4. Electrical characteristics
L5957 Electrical specifications
Doc ID 14442 Rev 3 7/16
Table 4. Electrical characteristics (continued)
Electrical specifications L5957
8/16 Doc ID 14442 Rev 3
Table 4. Electrical characteristics (continued)
