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PIN ASSIGNMENTS

12

11

10

9

8

7

123456

181716151413

FB_DCDC1

EN_DCDC1

EN_DCDC2

EN_LDO1

MODE

AGND

EN_LDO3

EN_LDO2

RESET

VLDO3

VINLDO2/3

VLDO2

19

20

21

22

23

24

TPS65053

SLVS754 – MARCH 2007

RGE PACKAGE

(TOP VIEW)

TERMINAL FUNCTIONS

TERMINAL

I/O

DESCRIPTION

NAME

NO.

Power supply for digital and analog circuitry of DCDC1, DCDC2 and LDOs. This pin must be

1

I

connected to the same voltage supply as VINDCDC1/2.

FB_DCDC1

19

I

between VOUT1, this pin and GND.

Select between Power Save Mode and forced PWM Mode for DCDC1 and DCDC2. In Power Save

MODE

23

I

Mode, PFM is used at light loads, PWM for higher loads. If PIN is set to high level, forced PWM Mode

is selected. If Pin has low level, then the device operates in Power Save Mode.

Input voltage for VDCDC1 and VDCDC2 step-down converter. This must be connected to the same

VINDCDC1/2

16

I

Input to adjust output voltage of converter 2 between 0.6V and VIN. Connect external resistor divider

FB_DCDC2

13

I

between VOUT2, this pin and GND.

L1

17

O

Switch pin of converter 1. Connected to Inductor

PGND1

18

I

GND for converter 1

PGND2

14

I

GND for converter 2

AGND

24

I

Analog GND, connect to PGND and PowerPAD™

L2

15

O

Switch Pin of converter 2. Connected to Inductor.

EN_DCDC1

20

I

Enable Input for converter 1, active high

EN_DCDC2

21

I

Enable Input for converter 2, active high

VINLDO1

2

I

Input voltage for LDO1

VINLDO2/3

8

I

Input voltage for LDO2 and LDO3

VLDO1

3

O

Output voltage of LDO1

VLDO2

7

O

Output voltage of LDO2

VLDO3

9

O

Output voltage of LDO3

FB_LDO1

4

1

Feedback input for the external voltage divider.

EN_LDO2

6

I

Feedback input for the external voltage divider.

EN_LDO1

22

I

Enable input for LDO1. Logic high enables the LDO, logic low disables the LDO.

EN_LDO2

11

I

Enable input for LDO2. Logic high enables the LDO, logic low disables the LDO.

EN_LDO3

12

I

Enable input for LDO3. Logic high enables the LDO, logic low disables the LDO.

THRESHOLD

5

I

Reset input

RESET

10

O

Open drain active low reset output, 100 ms reset delay time.

PowerPAD™

–

Connect to GND

5

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