VIN

CTRL

SW

FB

COMP

GND

TOP VIEW

Thermal

Pad

6-PIN2mmx2mmx0.8mmQFN

TPS61170-Q1

SLVSAX2

– SEPTEMBER 2011

www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

EasyScale TIMING

Start time of program stream

2

μs

End time of program stream

2

360

μs

High time low bit

Logic 0

2

180

μs

Low time low bit

Logic 0

2

360

μs

High time high bit

Logic 1

2

360

μs

Low time high bit

Logic 1

2

180

μs

Acknowledge output voltage low

0.4

V

Acknowledge valid time

2

μs

Duration of acknowledge condition

512

μs

THERMAL SHUTDOWN

Thermal shutdown threshold

160

°C

Thermal shutdown threshold hysteresis

15

°C

(2)

Acknowledge condition active 0, this condition will only be applied if the RFA bit is set. Open drain output, line needs to be pulled high

by the host with resistor load.

PIN ASSIGNMENTS

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

VIN

6

I

The input supply pin for the IC. Connect VIN to a supply voltage between 3 V and 18 V.

SW

4

I

This is the switching node of the IC. Connect SW to the switched side of the inductor.

GND

3

O

Ground

FB

1

I

Feedback pin for current. Connect to the center tap of a resistor divider to program the output voltage.

Output of the transconductance error amplifier. Connect an external RC network to this pin to compensate

COMP

2

O

the regulator.

Control pin of the boost regulator. CTRL is a multi-functional pin which can be used to enable the device

CTRL

5

I

and control the feedback voltage with a PWM signal or for digital communications.

The thermal pad should be soldered to the analog ground plane to avoid thermal issue. If possible, use

Thermal Pad

thermal vias to connect to ground plane for ideal power dissipation.

4

Submit Documentation Feedback

Copyright

© 2011, Texas Instruments Incorporated

Product Folder Link(s): TPS61170-Q1