LM7909
DESCRIPTION
These voltage regulators are designed as fixed negative voltage regulators for a wide variety of applications including local, on-card regulation. Although designed primarily as a fixed voltage regulator, these devices can be used with external ponents to obtain adjustable voltages and currents.
FEATURES
- Output current in excess of 1.0A
- No external ponents required
- Output Voltages (-5V, -6V, -8V, -9V, -10V, -12V, -15V, -18V)
- Internal Thermal shutdown and SOA protection
- Output voltage offered in 4% Tolerance
- Pb-Free Packages are available
- High ESD Level (HBM>8000V, MM>800V)
TYPICAL APPLICATION
The input voltage must remain typically 2.0V above the output voltage even during the low point on the ripple voltage.
- CI is required if regulator is located an appreciable Distance from power filter.
- CO improves transient response. Values of ≤ 1.0 µF could cause instability.
Input
Output
CI CO
2.2u F
1.0u F
1.0A ,Negative voltage Regulators
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