Thermal

Shutdown

UVLO

Current

Limit

3.3MW

Overshoot

Detect

500kW

1.208V

Bandgap

IN

EN

FB

OUT

GND

400W

Thermal

Shutdown

UVLO

Current

Limit

2 A

m

Overshoot

Detect

500kW

Quickstart

1.208V

Bandgap

(1)

IN

EN

NR

OUT

GND

400W

NOTE(1): Fixedvoltageversionsbetween1.0Vto1.2Vhavea1.0Vbandgapcircuit

insteadofa1.208Vbandgapcircuit.

8

7

6

5

OUT

N/C

NR/FB

GND

IN

N/C

N/C

EN

1

2

3

4

GND

IN

N/C

EN

6

5

4

OUT

NR/FB

GND

1

2

3

GND

TPS735xx

SBVS087H – JUNE 2008 – REVISED NOVEMBER 2009

www.ti.com

DEVICE INFORMATION

FUNCTIONAL BLOCK DIAGRAMS

Figure 1. Fixed Voltage Versions

Figure 2. Adjustable Voltage Versions

PIN CONFIGURATIONS

DRB PACKAGE

DRV PACKAGE

3mm × 3mm SON-6

2mm × 2mm SON-6

(TOP VIEW)

(TOP VIEW)

PIN DESCRIPTIONS

TPS735xx

NAME

DRV

DRB

DESCRIPTION

IN

6

8

Input supply.

GND

3, Pad

4

Ground. The pad must be tied to GND.

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

EN

4

5

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

Fixed voltage versions only; connecting an external capacitor to this pin bypasses noise

NR

2

3

generated by the internal bandgap. This allows output noise to be reduced to very low levels.

Adjustable version only; this is the input to the control loop error amplifier, and is used to set the

FB

2

3

output voltage of the device.

Output of the regulator. A small capacitor (total typical capacitance

≥ 2.0μF ceramic) is needed

OUT

1

1

from this pin to ground to assure stability.

N/C

5

2, 6, 7

Not internally connected. This pin must either be left open, or tied to GND.

4

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