LM196

*For best TC of VOUT, R1 should be wirewound or metal film, 1% or better.
**R2 should be same type as R1, with TC tracking of 30 ppm/ or better.

C1 is necessary only if main filter capacitor is more than 6* away, assuming #18 or larger leads.

C2 is not absolutely necessary, but is suggested to lower high frequency output impedance.

Output capacitors in the range of 1 mF to 1000 mF of aluminum or tantalum electrolytic are commonly used to provide improved output impedance and rejection of transients.

'C3 improves ripple rejection, output impedance,and noise. C2 should be 1 mF or larger close to the regulator if C3 is used.

If Military/Aerospace specified devices are required,please contact the National Semiconductor Sales Office/Distributors for availability and specifications.
Power Dissipation ................................Internally Limited
Input-Output Voltage Differential ..............................20V
Operating Junction Temperature Range
    LM196 Control Section ........................-55 to+150
      Power Transistor ..............................-55 to +200
    LM396 Control Section ..........................0 to +125
      Power Transistor .................................0 to +175
Storage Temperature .............................-65 to +150
Lead Temperature (Soldering, 10 seconds) ...........300
ESD rating to be determined

The LM196 is a 10 amp regulator, adjustable from 1.25V to 15V, which uses a revolutionary new IC fabrication structure to combine high power discrete transistor technology with modern monolithic linear IC processing. This combination yields a high-performance single-chip regulator capable of supplying in excess of 10 amps and operating at power levels up to 70 watts. The regulators feature on-chip trimming of reference voltage to ±0.8% and simultaneous trimming of reference temperature drift to 30 ppm/ typical. Thermal interaction between control circuitry and the pass transistor which affects the output voltage has been reduced to extremely low levels by strict attention to isothermal layout.This interaction, called thermal regulation, is 100% tested.

These new regulators have all the protection features of popular lower power adjustable regulators such as LM117 and LM138, including current limiting and thermal limiting.The combination of these features makes the LM196 immune
to blowout from output overloads or shorts, even if the adjustment pin is accidentally disconnected. All devices are "burned-in'' in thermal shutdown to guarantee proper operation of these protective features under actual overload conditions.Output voltage is continuously adjustable from 1.25V to 15V. Higher output voltages are possible if the maximum input-output voltage differential specification is not exceeded.Full load current of 10A is available at all output voltages,subject only to the maximum power limit of 70W and of course, maximum junction temperature.

The LM196 is exceptionally easy to use. Only two external resistors are used to to set output voltage. On-chip adjustment of the reference voltage allows a much tighter specification of output voltage, eliminating any need for trimming in most cases. The regulator will tolerate an extremely wide range of reactive loads, and does not depend on external capacitors for frequency stabilization. Heat sink requirements are much less stringent, because overload situations do not have to be accounted forÐonly worst-case full load conditions.

The LM196 is in a TO-3 package with oversized (0.060*) leads to provide best possible load regulation. Operating junction temperature range is-55 to +150. The LM396 is specified for a 0 to +125 junction temperature range.