LMR70503 Datasheet, PDF (1/19 Pages) Texas Instruments – SIMPLE SWITCHER® Buck-Boost Converter For Negative Output Voltage in μSMD

LMR70503
SIMPLE SWITCHER® Buck-Boost Converter For Negative Output
Voltage in µSMD
Features
● ^{Tiny 8-Bump Thin Micro SMD Package: 0.84 mm × 1.615}
mm × 0.6 mm
● ^{2.8 V to 5.5 V Input Voltage Range}
● ^{Adjustable Output Voltage: -0.9 V to -5.5 V}
● ^{320 mA Switch Current Limit}
● ^{500 kHz Minimum Switching Frequency}
● ^{Ground Referred Enable Input}
● ^{Under Voltage Lock Out (UVLO)}
● ^{No External Compensation}
● ^{Internal Soft Start}
● ^{1 µA Shutdown Supply Current}
System Performance
● ^{Small Output Voltage Ripple}
● ^{WEBENCH® Enabled}
Performance Benefits
● ^{Easy To Use}
● ^{Tiny Overall Solution Size Reduces System Cost}
Applications
● ^{General Purpose Negative Voltage Supply}
● ^{Negative Rail / Bias Supply For Op-amp And Data}
Converters
● ^{LCD Biasing}
Efficiency, V_OUT= -5.0 V
80
70
60
50
VIN = 2.8V
VIN = 3.3V
40
VIN = 4.0V
VIN = 5.0V
VIN = 5.5V
30
0 10 20 30 40 50 60 70 80 90 100
LOAD (mA)
30184975
Efficiency, V_OUT= -2.5 V
80
70
60
50
40
30
0
VIN = 2.8V
VIN = 3.3V
VIN = 4.0V
VIN = 5.0V
VIN = 5.5V
30 60 90 120 150 180
LOAD (mA)
30184979
Typical Application Circuit
PRODUCTION DATA information is current as of
publication date. Products conform to specifications per
the terms of the Texas Instruments standard warranty.
Production processing does not necessarily include
testing of all parameters.
30184901
301849 SNVS850
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