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Current

Sense

Thermal

Shutdown

UVLO

UVLO

R

1

FB

R

2

External to

the Device

Overshoot

Detect

250 k

Ω

Quickstart

Bandgap

Reference

1.225 V

IN

V

IN

EN

GND

OUT

300

Ω

V

REF

ILIM

SHUTDOWN

Current

Sense

Thermal

Shutdown

UVLO

UVLO

R

1

R

2

R

Overshoot

Detect

250 k

Ω

Quickstart

Bandgap

Reference

1.225 V

IN

V

IN

EN

GND

NR

OUT

300

Ω

V

REF

ILIM

SHUTDOWN

TPS795xx

SLVS350G – OCTOBER 2002 – REVISED JULY 2006

FUNCTIONAL BLOCK DIAGRAM—ADJUSTABLE VERSION

FUNCTIONAL BLOCK DIAGRAM—FIXED VERSION

Table 1. Terminal Functions

SOT223 (DCQ)

3x3 SON (DRB)

NAME

PIN NO.

PIN NO.

DESCRIPTION

IN

2

1, 2

Unregulated input to the device

GND

3, 6

6

Regulator ground

EN

1

8

Driving the enable pin (EN) high turns on the regulator. Driving this pin low puts the regulator into

shutdown mode. EN can be connected to IN if not used.

NR

5

5

Noise-reduction pin for fixed versions only. Connecting an external capacitor to this pin bypasses

noise generated by the internal bandgap, which improves power-supply rejection and reduces

output noise. (Not available on adjustable versions.)

FB

5

5

Feedback input voltage for the adjustable device. (Not available on fixed voltage versions.)

OUT

4

3, 4

Regulator output.

NC

–

7

Not connected

4

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