jl117sya National Semiconductor Corporation, jl117sya Datasheet - Page 11

• Manufacturer Part Number: jl117sya
• Description: Lm117jan 3-terminal Adjustable Regulator
• Manufacturer: National Semiconductor Corporation

Application Hints
when either the input or output is shorted. Internal to the
LM117 is a 50Ω resistor which limits the peak discharge
current. No protection is needed for output voltages of 25V
or less and 10µF capacitance. Figure 3 shows an LM117
with protection diodes included for use with outputs greater
than 25V and high values of output capacitance.
D1 protects against C1
D2 protects against C2
Typical Applications
*Min. output ) 1.2V
*Discharges C1 if output is shorted to ground
†
Solid tantalum
5V Logic Regulator with Electronic Shutdown*
FIGURE 3. Regulator with Protection Diodes
(Continued)
Adjustable Regulator with Improved Ripple Rejection
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When a value for θ
a heatsink must be selected that has a value that is less than
or equal to this number.
θ
in the catalog, or shown in a curve that plots temperature rise
vs power dissipation for the heatsink.
(H−A)
is specified numerically by the heatsink manufacturer
Slow Turn-On 15V Regulator
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(H−A)
is found using the equation shown,
www.national.com
20149009