For technical support and more information, see inside back cover or visit www.ti.com

Note A:

Characteristic data has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.

Note B:

SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.

Efficiency vs Output Current

Power Dissipation vs Output Current

Output Ripple vs Output Current

PT5820 Series

16-A 12-V Input Adjustable

Integrated Switching Regulator

Pin Descriptions

+Vin:

The positive supply voltage input for the module

with respect to the common GND.

+Vo:

This is the regulated output voltage from the mod-

ule with respect to the common GND.

GND:

The common GND node to which the input, out-

put, and external control signals are referenced.

Sense(–):

Provides the regulator with the ability to sense

the set-point voltage directly across the load. For opti-

mum output voltage accuracy this pin should always be

connected to GND, even for applications that demand a

relatively light load.

Sense(+):

When used with Sense(–), the regulation cir-

cuitry will compensate for voltage drop between the

converter and the load. The pin may be left open circuit,

Inhibit:

This is an active low input, which is referenced

to GND. Driving this pin to GND disables the module’s

output voltage. If Inhibit is left open-circuit, the output

will be active whenever a valid input source is applied.

This pin is used to trim the output voltage to a

value within a range of up to ±10% of the setpoint. The

adjustment requires an external resistor. The resistor is

in order to adjust the output voltage either up or down,

respectively.

Margin Up:

When this pin is connected to Sense(–), the

output voltage is increased by 5% of the nominal setpoint.

The Margin Up and Margin Down control inputs provide

a convenient method for testing the operation of the

load circuit over a ±5% variation in the supply voltage.

Margin Down:

When this pin is connected to Sense(–), the

output voltage is decreased by approximately 5% from

the nominal.

Typical Characteristics

50

60

70

80

90

100

04

8

12

16

Iout (A)

PT5827

PT5821

PT5822

PT5823

PT5824

PT5825

PT5826

0

10

20

30

40

50

0

4

8

12

16

Iout (A)

PT5827

PT5821

PT5822

PT5823

PT5824

PT5825

PT5826

0

2

4

6

8

04

8

12

16

Iout (A)

PT5827

PT5821

PT5824

PT5826