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
PWRGD
VIN
PVIN
PGND
PH
VOUT
AGND
VADJ
INH
SS_SEL
SENSE+
LMZ31530
1.43kΩ
+
+
VREF
Ramp
Comp
Power
Stage
and
Control
Logic
Thermal
Shutdown
Shutdown
Logic
OCP
VIN
UVLO
Frequency
Select
100kΩ
FREQ_SEL
ILIM
PWRGD_PU
V5VLDO
SS/
FCCM/
Skip
PWRGD
Logic
10kΩ
6.65kΩ
VIN
LMZ31530
SLVSBC7B –OCTOBER 2013–REVISED DECEMBER 2013
www.ti.com
FUNCTIONAL BLOCK DIAGRAM
8 Copyright © 2013, Texas Instruments Incorporated
Product Folder Links: LMZ31530