2.8V to 5.5V, 300mA Buck/Boost Negative Output Voltage Regulator
Product details
Parameters
Package | Pins | Size
Features
- Tiny 8-Bump Thin DSBGA 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
- Small Output Voltage Ripple
- WEBENCH Enabled
Performance Benefits
- Easy To Use
- Tiny Overall Solution Size Reduces System Cost
SIMPLE 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.
Technical documentation
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
Features
- Tiny 8-Bump Thin Micro SMD Package: 0.84 mm à 1.615 mm à 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 (...)
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
Reference designs
This reference design describes a wideband RF (...)
Design files
-
download TIDA-00431 BOM.pdf (228KB) -
download TIDA-00431 Assembly Drawing.pdf (1080KB) -
download TIDA-00431 PCB.pdf (7565KB) -
download TIDA-00431 CAD Files.zip (2546KB) -
download TIDA-00431 Gerber.zip (814KB)
Design files
-
download TIDA-00826 Gerber.zip (1121KB) -
download TIDA-00826 BOM.pdf (283KB) -
download TIDA-00826 PCB.pdf (28400KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
DSBGA (YFX) | 8 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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