ADP5033

Rev. 0 | Page 7 of 28

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS

TOP VIEW

(BALL SIDE DOWN)

Not to Scale

1

A

B

C

D

23

4

BALL A1

INDICATOR

VOUT3

AGND

VIN1

PGND1

VIN4

ENA

VOUT2

SW2

VOUT4

ENB

VIN2

PGND2

VIN3

MODE

VOUT1

SW1

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

Table 7. Pin Function Descriptions

Pin No.

Mnemonic

Description

A1

VOUT3

LDO1 Output Voltage and Sensing Input.

A2

VIN3

LDO1 Input Supply (1.7 V to 5.5 V, VIN4 ≤ VIN1 = VIN2).

A3

VIN4

LDO2 Input Supply (1.7 V to 5.5 V, VIN3 ≤ VIN1 = VIN2).

A3

VOUT4

LDO2 Output Voltage and Sensing Input.

B1

AGND

Analog Ground.

B2

MODE

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

B3

ENA

Regulator Enable Pin A, Active High. The regulators turned on with ENA are factory programmed.

B4

ENB

Regulator Enable Pin B, Active High. The regulators turned on with ENB are factory programmed.

C1

VIN1

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

C2

VOUT1

BUCK1 Output Voltage Sensing Input.

C3

VOUT2

BUCK2 Output Voltage Sensing Input.

C4

VIN2

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

D1

PGND1

Dedicated Power Ground for BUCK1.

D2

SW1

BUCK1 Switching Node.

D3

SW2

BUCK2 Switching Node.

D4

PGND2

Dedicated Power Ground for BUCK2.