Datasheet
Table Of Contents
- FEATURES
- APPLICATIONS
- DESCRIPTION
- ABSOLUTE MAXIMUM RATINGS
- RECOMMENDED OPERATING CONDITIONS
- THERMAL INFORMATION
- PACKAGE SPECIFICATIONS
- ELECTRICAL CHARACTERISTICS
- DEVICE INFORMATION
- TYPICAL CHARACTERISTICS (PVIN = VIN = 12 V) The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the converter. Applies to , , and . The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum operating temperatures. Derating limits apply to devices soldered directly to a 100 mm × 100 mm six-layer PCB with 1 oz. copper. Applies to , , and .
- TYPICAL CHARACTERISTICS (PVIN = VIN = 5 V) The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the converter. Applies to , , and . The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum operating temperatures. Derating limits apply to devices soldered directly to a 100 mm × 100 mm six-layer PCB with 1 oz. copper. Applies to , , and .
- APPLICATION INFORMATION
- ADJUSTING THE OUTPUT VOLTAGE
- Frequency Select
- CAPACITOR RECOMMENDATIONS FOR THE LMZ31530 POWER SUPPLY
- Transient Response
- Transient Waveforms Device configured for FCCM mode of operation, (pin 3 connected to pin 19).
- Application Schematics
- VIN and PVIN Input Voltage
- 3.3 V PVIN Operation
- Power Good (PWRGD)
- Slow Start (SS_SEL)
- Auto-Skip Eco-Mode / Forced Continuous Conduction Mode
- Power-Up Characteristics
- Pre-Biased Start-Up
- Remote Sense
- Output On/Off Inhibit (INH)
- Overcurrent Protection
- Current Limit (ILIM) Adjust
- Thermal Shutdown
- Layout Considerations
- EMI
- Revision History
20
30
40
50
60
70
80
90
0 5 10 15 20 25 30
Ambient Temperature (C)
Output Current (A)
Vo = 0.6V, fsw = 500kHz
Vo = 1.2V, fsw = 500kHz
Vo = 1.8V, fsw = 500kHz
Vo = 3.3V, fsw = 500kHz
C001
Airflow = 100 LFM
20
30
40
50
60
70
80
90
0 5 10 15 20 25 30
Ambient Temperature (C)
Output Current (A)
Vo = 0.6V, fsw = 500kHz
Vo = 1.2V, fsw = 500kHz
Vo = 1.8V, fsw = 500kHz
Vo = 3.3V, fsw = 500kHz
C001
Airflow = 200 LFM
0.0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0
10.0
0 5 10 15 20 25 30
Power Dissipation (W)
Output Current (A)
Vo = 3.3V, fsw = 500kHz
Vo = 1.8V, fsw = 500kHz
Vo = 1.2V, fsw = 500kHz
Vo = 0.9V, fsw = 500kHz
Vo = 0.6V, fsw = 500kHz
C004
20
30
40
50
60
70
80
90
0 5 10 15 20 25 30
Ambient Temperature (C)
Output Current (A)
Vo = 0.6V, fsw = 500kHz
Vo = 1.2V, fsw = 500kHz
Vo = 1.8V, fsw = 500kHz
Vo = 3.3V, fsw = 500kHz
C001
Airflow = 0 LFM
30
40
50
60
70
80
90
100
0 5 10 15 20 25 30
Efficiency (%)
Output Current (A)
Vo = 3.3V, fsw = 500kHz
Vo = 1.8V, fsw = 500kHz
Vo = 1.2V, fsw = 500kHz
Vo = 0.9V, fsw = 500kHz
Vo = 0.6V, fsw = 500kHz
C001
5
15
25
35
45
55
0 5 10 15 20 25 30
Output Ripple Voltage (mV)
Output Current (A)
Vo = 3.3V, fsw = 500kHz
Vo = 1.8V, fsw = 500kHz
Vo = 1.2V, fsw = 500kHz
Vo = 0.9V, fsw = 500kHz
Vo = 0.6V, fsw = 500kHz
C004
LMZ31530
www.ti.com
SLVSBC7B –OCTOBER 2013–REVISED DECEMBER 2013
TYPICAL CHARACTERISTICS (PVIN = VIN = 12 V)
(1) (2)
Figure 1. Efficiency vs. Output Current Figure 2. Voltage Ripple vs. Output Current
Figure 3. Power Dissipation vs. Output Current Figure 4. Safe Operating Area (0 LFM)
Figure 5. Safe Operating Area (100 LFM) Figure 6. Safe Operating Area (200 LFM)
(1) The electrical characteristic data has been developed from actual products tested at 25°C. This data is considered typical for the
converter. Applies to Figure 1, Figure 2, and Figure 3.
(2) The temperature derating curves represent the conditions at which internal components are at or below the manufacturer's maximum
operating temperatures. Derating limits apply to devices soldered directly to a 100 mm × 100 mm six-layer PCB with 1 oz. copper.
Applies to Figure 4, Figure 5, and Figure 6.
Copyright © 2013, Texas Instruments Incorporated 9
Product Folder Links: LMZ31530