1FEATURES

· 1.5-A Output Current

· Wide-Input Voltage

(7 V to 36 V) / (15 V to 36 V)

· Wide-Output Voltage Adjust

(2.5 V to 12.6 V) / (11.85 V to 22 V)

· High Efficiency (Up to 95%)

· On/Off Inhibit

· Undervoltage Lockout

· Output Current Limit

· Overtemperature Shutdown

· Operating Temperature: –40°C to 85°C

· Surface Mount Package Available

APPLICATIONS

· General-Purpose, Industrial Controls,

HVAC Systems, Test and Measurement,

Medical Instrumentation, AC/DC Adaptors,

Vehicles, Marine, and Avionics

DESCRIPTION

The PTN78000 is a series of high-efficiency,

step-down Integrated Switching Regulators (ISR),

that represent the third generation in the evolution of

the popular 78ST100 series of products. In new designs it should be considered in place of the

78ST100, PT78ST100, PT5100, and PT6100 series

of single in-line pin (SIP) products. The PTN78000 is

smaller and lighter than its predecessors, and has either similar or improved electrical performance

characteristics. The case-less, double-sided package,

also exhibits improved thermal characteristics, and is

compatible with TI's roadmap for RoHS and lead-free compliance.

Operating from a wide-input voltage range, the

PTN78000 provides high-efficiency, step-down

voltage conversion for loads of up to 1.5 A. The output voltage is set using a single external resistor.

The PTN78000W may be set to any value within the

range, 2.5 V to 12.6 V, and the PTN78000H from

11.85 V to 22 V. The output voltage of the

PTN78000W can be as little as 2 V lower than the

input, allowing operation down to 7 V, with an output

voltage of 5 V. The output voltage of the PTN78000H

can be as little as 3 V lower than the input, alowing

operation down to 15 V, with an output voltage of

12 V.

The PTN78000 has undervoltage lockout and an

integral on/off inhibit. The modules are suited to a

wide variety of general-purpose applications that

operate off 12-V, 24-V, or 28-VDC power.