ADP5034-2-EVALZ 데이터 시트보기 (PDF) - Analog Devices

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ADP5034-2-EVALZ

Dual 3 MHz, 1200 mA Buck Regulators with Two 300 mA LDOs

Analog Devices 

Data Sheet

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

FB4 1

EN4 2

VIN2 3

SW2 4

PGND2 5

NC 6

PIN 1

INDICATOR

ADP5034

TOP VIEW

(Not to Scale)

18 AGND

17 AVIN

16 VIN1

15 SW1

14 PGND1

13 MODE

ADP5034

NOTES

1. NC = NO CONNECT. DO NOT CONNECT TO THIS PIN.

2. IT IS RECOMMENDED THAT THE EXPOSED PAD

BE SOLDERED TO THE GROUND PLANE.

Figure 2. Pin Configuration—View from the Top of the Die

Table 7. Pin Function Descriptions

Pin No. Mnemonic Description

1

FB4

LDO2 Feedback Input. For device models with a adjustable output voltage, connect this pin to the middle of the

LDO2 resistor divider. For device models with a factory programmed output voltage, connect FB4 to the top of the

capacitor on VOUT4.

2

EN4

LDO2 Enable Pin. High level turns on this regulator, and low level turns it off.

3

VIN2

BUCK2 Input Supply (2.3 V to 5.5 V). Connect VIN2 to VIN1 and AVIN.

4

SW2

BUCK2 Switching Node.

5

PGND2

Dedicated Power Ground for BUCK2.

6

NC

No Connect. Leave this pin unconnected.

7

EN2

BUCK2 Enable Pin. High level turns on this regulator, and low level turns it off.

8

FB2

BUCK2 Feedback Input. For device models with an adjustable output voltage, connect this pin to the middle of the

BUCK2 resistor divider. For device models with a fixed output voltage, leave this pin unconnected.

9

VOUT2

BUCK2 Output Voltage Sensing Input. Connect VOUT2 to the top of the capacitor on VOUT2.

10

VOUT1

BUCK1 Output Voltage Sensing Input. Connect VOUT1 to the top of the capacitor on VOUT1.

11

FB1

BUCK1 Feedback Input. For device models with an adjustable output voltage, connect this pin to the middle of the

BUCK1 resistor divider. For device models with a fixed output voltage, leave this pin unconnected.

12

EN1

BUCK1 Enable Pin. High level turns on this regulator, and low level turns it off.

13

MODE

BUCK1/BUCK2 Operating Mode. MODE = high: forced PWM operation. MODE = low: auto PWM/PSM operation.

14

PGND1

Dedicated Power Ground for BUCK1.

15

SW1

BUCK1 Switching Node.

16

VIN1

BUCK1 Input Supply (2.3 V to 5.5 V). Connect VIN1 to VIN2 and AVIN.

17

AVIN

Analog Input Supply (2.3 V to 5.5 V). Connect AVIN to VIN1 and VIN2.

18

AGND

Analog Ground.

19

FB3

LDO1 Feedback Input. For device models with an adjustable output voltage, connect this pin to the middle of the

LDO1 resistor divider. For device models with a factory programmed output voltage, connect FB3 to the top of the

capacitor on VOUT3.

20

VOUT3

LDO1 Output Voltage.

21

VIN3

LDO1 Input Supply (1.7 V to 5.5 V).

22

EN3

LDO1 Enable Pin. High level turns on this regulator, and low level turns it off.

23

VIN4

LDO2 Input Supply (1.7 V to 5.5 V).

24

VOUT4

LDO2 Output Voltage.

EPAD EP

Exposed Pad. It is recommended that the exposed pad be soldered to the ground plane.

Rev. A | Page 7 of 28

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