LMR70503 Series

2.8V to 5.5V, 300mA Buck/Boost Negative Output Voltage Regulator

Catalog

2.8V to 5.5V, 300mA Buck/Boost Negative Output Voltage Regulator

Part	Current - Output	Frequency - Switching	Voltage - Input [Min]	Voltage - Input [Max]	Supplied Contents	Board Type	Voltage - Output [Max]	Voltage - Output [Min]	Regulator Topology	Outputs and Type	Outputs and Type	Main Purpose	Utilized IC / Part	Voltage - Input (Max) [Max]	Output Type	Voltage - Output (Min/Fixed)	Supplier Device Package	Function	Package / Case	Output Configuration	Mounting Type	Topology	Number of Outputs	Operating Temperature [Min]	Operating Temperature [Max]	Voltage - Output (Max) [Max]	Voltage - Input (Min) [Min]
Texas Instruments LMR70503EVM/NOPB	320 mA	500 kHz	2.8 V	5.5 V	Board(s)	Fully Populated	-5.5 V	-9 V	Buck-Boost	Non-Isolated	1	DC/DC Negative Inverter	LMR70503
Texas Instruments LMR70503TMX/NOPB	270 mA	500 kHz												5.5 V	Adjustable	-1 V	8-DSBGA	Step-Up/Step-Down	8-WFBGA DSBGA	Negative	Surface Mount	Buck-Boost	1	-40 °C	125 ¯C	-5.5 V	2.8 V
Texas Instruments LMR70503TM/NOPB	270 mA	500 kHz												5.5 V	Adjustable	-1 V	8-DSBGA	Step-Up/Step-Down	8-WFBGA DSBGA	Negative	Surface Mount	Buck-Boost	1	-40 °C	125 ¯C	-5.5 V	2.8 V

Catalog

2.8V to 5.5V, 300mA Buck/Boost Negative Output Voltage Regulator

Key Features

• Tiny 8-Bump Thin DSBGA Package: 0.84 mm × 1.615 mm × 0.6 mm2.8 V to 5.5 V Input Voltage RangeAdjustable Output Voltage: -0.9 V to -5.5 V320 mA Switch Current Limit500 kHz Minimum Switching FrequencyGround Referred Enable InputUnder Voltage Lock Out (UVLO)No External CompensationInternal Soft Start1 µA Shutdown Supply CurrentSmall Output Voltage RippleWEBENCH EnabledPerformance BenefitsEasy To UseTiny Overall Solution Size Reduces System CostSIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.Tiny 8-Bump Thin DSBGA Package: 0.84 mm × 1.615 mm × 0.6 mm2.8 V to 5.5 V Input Voltage RangeAdjustable Output Voltage: -0.9 V to -5.5 V320 mA Switch Current Limit500 kHz Minimum Switching FrequencyGround Referred Enable InputUnder Voltage Lock Out (UVLO)No External CompensationInternal Soft Start1 µA Shutdown Supply CurrentSmall Output Voltage RippleWEBENCH EnabledPerformance BenefitsEasy To UseTiny Overall Solution Size Reduces System CostSIMPLE SWITCHER is a trademark of Texas Instruments. WEBENCH is a trademark of Texas Instruments. All trademarks are the property of their respective owners.

Description

The LMR70503 is a buck-boost converter with adjustable negative output voltage in a tiny 8-bump thin DSBGA package. Its unique control method is designed to provide fast transient response, low output noise, high efficiency, and tight regulation in the smallest possible PCB area. The LMR70503 has built in soft start, peak current limit, minimum switching frequency, and Under Voltage Lock Out (UVLO), with no external compensation required. For ease of use, the Enable pin is referred to the IC ground, instead of the lowest potential of the IC: the negative output voltage. The LMR70503 is a buck-boost converter with adjustable negative output voltage in a tiny 8-bump thin DSBGA package. Its unique control method is designed to provide fast transient response, low output noise, high efficiency, and tight regulation in the smallest possible PCB area. The LMR70503 has built in soft start, peak current limit, minimum switching frequency, and Under Voltage Lock Out (UVLO), with no external compensation required. For ease of use, the Enable pin is referred to the IC ground, instead of the lowest potential of the IC: the negative output voltage.