CS8156YTVA5 ON Semiconductor, CS8156YTVA5 Datasheet - Page 7

• Manufacturer Part Number: CS8156YTVA5
• Description: IC REG LDO 12V/5V VERT TO220-5
• Manufacturer: ON Semiconductor

Specifications of CS8156YTVA5

• Regulator Topology: Positive Fixed
• Voltage - Output: 12V, 5V
• Voltage - Input: 6 ~ 26 V
• Voltage - Dropout (typical): 0.6V @ 750mA, -
• Number Of Regulators: 2
• Current - Output: 750mA, 100mA
• Current - Limit (min): 750mA, 100mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-5 (Bent and Staggered Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Other names: CS8156YTVA5OS

at which the circuit ceases to regulate against further
reduction in input voltage. Measured when the output
voltage has dropped 100 mV from the nominal value
obtained at 14 V input, dropout voltage is dependent upon
load current and junction temperature.
terminals with respect to ground.
between the unregulated input voltage and the regulated
output voltage for which the regulator will operate.
change in the input voltage. The measurement is made under
conditions of low dissipation or by using pulse techniques
such that the average chip temperature is not significantly
affected.
Stability Considerations
three main characteristics of a linear regulator: start−up
delay, load transient response and loop stability.
availability, size and temperature constraints. A tantalum or
aluminum electrolytic capacitor is best, since a film or
ceramic capacitor with almost zero ESR can cause
instability. The aluminum electrolytic capacitor is the
cheapest solution, but, if the circuit operates at low
temperatures (−25°C to −40°C), both the value and ESR of
the capacitor will vary considerably. The capacitor
manufacturers data sheet usually provides this information.
the test and applications circuit should work for most
applications, however it is not necessarily the best solution.
particular application, start with a tantalum capacitor of the
Dropout Voltage − The input−output voltage differential
Input Voltage − The DC voltage applied to the input
Input Output Differential − The voltage difference
Line Regulation − The change in output voltage for a
The output or compensation capacitor helps determine
The capacitor value and type should be based on cost,
The value for the output capacitors C2 and C3 shown in
To determine acceptable values for C2 and C3 for a
ENABLE
V
V
OUT1
OUT2
V
IN
2.0 V
0.8 V
14 V
0 V
0 V
Turn
On
60 V
12 V
Dump
Load
5.0 V
34 V
Figure 19. Typical Circuit Waveform
12 V
DEFINITION OF TERMS
APPLICATION NOTES
Low V
http://onsemi.com
IN
3.0 V
2.4 V
2.4 V
CS8156
7
26 V
Noise, Etc.
change in load current at constant chip temperature.
accelerated life−test conditions after 1000 hours with
maximum rated voltage and junction temperature.
output, with constant load and no input ripple, measured
over a specified frequency range.
current that does not contribute to the positive load current,
i.e., the regulator ground lead current.
ripple voltage to the peak−to−peak output ripple voltage.
change in output voltage for a thermal variation from room
temperature to either temperature extreme.
recommended value and work towards a less expensive
alternative part for each output.
Step 1: Place the completed circuit with a tantalum
capacitor of the recommended value in an environmental
chamber at the lowest specified operating temperature and
monitor the outputs with an oscilloscope. A decade box
connected in series with the capacitor C
higher ESR of an aluminum capacitor. Leave the decade box
outside the chamber, the small resistance added by the
longer leads is negligible.
Step 2: With the input voltage at its maximum value,
increase the load current slowly from zero to full load while
observing the output for any oscillations. If no oscillations
are observed, the capacitor is large enough to ensure a stable
design under steady state conditions.
Step 3: Increase the ESR of the capacitor from zero using the
decade box and vary the load current until oscillations
Line
Load Regulation − The change in output voltage for a
Long Term Stability − Output voltage stability under
Output Noise Voltage − The rms AC voltage at the
Quiescent Current − The part of the positive input
Ripple Rejection − The ratio of the peak−to−peak input
Temperature Stability of V
12 V
V
Circuit
Short
OUT1
0 V
V
Circuit
Short
OUT2
12 V
Shutdown
Thermal
V
OUT1
5.0 V
OUT
14V
− The percentage
2
12 V
will simulate the
Turn
Off
0 V