ACT5101 datasheet(5/59 Pages) QORVO

5 / 59 page

Data Sheet Rev. E, November 2019 | Subject to change without notice

5 of 59

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ACT510x

23V Buck-Boost Converter with Integrated MOSFETs

PIN DESCRIPTIONS

NAME

DESCRIPTION

1, 9, 32

AGND

Analog Ground. Kelvin connect AGND to the PGND plane.

No Connect. Connect this pin to AGND.

INTBP

Internal Voltage Bypass - Connect a 100nF ceramic capacitor between INTBP and AGND

VREG

Internal VREG LDO output. The output voltage is programmable from 2V to 5.1V. Connect a 1.0uF

between VREG and AGND. The maximum current capability for this pin is 100mA.

5, 20

PGND

Power Ground. Connect to large ground plane on PCB with thermal vias.

SDA

I2C Data Input and Output. Needs an external pull up resistor.

SCL

I2C Clock Input. Needs an external pull up resistor.

Enable Input. The converter is enabled when EN is pulled high and disabled when EN is pulled low.

nIRQ

Interrupt Open-Drain Output. nIRQ goes low to indicate a fault condition. nIRQ is referenced to

AGND.

ILIM

Input current limit setting pin. Connect a resistor from ILIM to AGND to program the maximum input

current.

VINS

Input Voltage Sense Input – Kelvin connect to the input voltage input capacitors.

ISRP

Input current sense resistor positive input.

ISRN

Input current sense resistor negative input.

HSB2

High Side Bias Boot-strap pin. This provides power to the internal high-side MOSFET gate driver

circuitry. Connect a 47nF capacitor from HSB2 to SW2 pin

16, 17

VIN

Power Input pins. Connect these pins to 22uF-100uF ceramic capacitors placed as close to the IC

as possible.

18, 19

SW2

Power switching output to external inductor.

21, 22

SW1

Power switching output to external inductor.

23, 24

VOUT

Output voltage pins. Place 22uF to 44uF decoupling capacitors between VOUT and PGND.

HSB1

High Side Bias Boot-strap pin. This provides power to the internal high-side MOSFET gate driver

circuitry. Connect a 47nF capacitor from HSB1 to SW1 pin

OSRN

Output current sense resistor negative input

OSRP

Output current sense resistor positive input.

STAT

Open drain status output to indicate various IC operating conditions. A LOW indicates the converter is

enabled and has a valid output. A HIZ indicates the converter is disabled for any reason

OLIM

Output constant current limit setting pin. Connect a resistor from OLIM to AGND to program the

output current.

(ACT5101)

A2D

A2D input pin

(ACT5102)

Output voltage feedback pin.

COMP

Error Amplifier Output. This pin is used to compensate the converter.

Exposed

Pad

PGND

Power Ground. Connect to large ground plane on PCB with thermal vias.

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