ACT88430 datasheet(20/74 Pages) QORVO

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Data Sheet Rev. G, August 2021 | Subject to change without notice

20 of 74

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ACT88430

Advanced PMU for Microcontrollers and Solid State Drive Applications

BUCK4 ELECTRICAL CHARACTERISTICS, REGULATORS:

(VIN_B4 = 3.3V, TA = 25°C, unless otherwise specified.)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Operating Voltage Range

2.7

5.5

Output Voltage Range

Configurable in 12.5mV steps

0.8

4.0

Maximum Output Current

Supply Current, Standby

Low Power Mode Enabled

Regulator Only, No Load

(VOUT = VSET*1.05)

µA

Supply Current, Shutdown

Regulator Disabled

0.1

µA

Output Voltage Accuracy – PWM

Default output voltage, IOUT = 2A

-1%

VNOM

Output Voltage Accuracy - PFM

Default output voltage, IOUT = 1mA,

Average Ripple Voltage

-1%

VNOM

Line Regulation

Default output voltage, VIN_B4 = 3.3V to

5.5V, PWM mode

0.02

%/V

Load Regulation

Default output voltage, PWM Mode

0.04

%/A

Power Good Threshold

VOUT_B4 Rising

%VNOM

Power Good Hysteresis

VOUT_B4 Falling

%VNOM

Overvoltage Fault Threshold

VOUT_B4 Rising

107.5

110

112.5

%VNOM

Overvoltage Fault Hysteresis

VOUT_B4 Falling

%VNOM

Switching Frequency

VOUT_B4

≥ 20% of VNOM

2.15

2.25

2.36

MHz

Soft-Start Period – Programmable

Range

Configurable in 25us steps

10% to 90% VNOM

204

µs

Soft-Start Period

Variation from set point

-25

+25

Internal High Side Peak Current

Limit (Cycle-by-Cycle) ILIMSET

B4_ILIMSET=00

B4_ILIMSET=01

B4_ILIMSET=10

B4_ILIMSET=11

4.0

3.0

2.0

Internal High Side Peak Current

Limit (Cycle-by-Cycle) Tolerance

At default ILIMSET

-10%

ILIMSET

+10%

At other set points

-15%

ILIMSET

+15%

Internal High Side Peak Current

Limit, Shutdown Level

Above ILIMSET = all settings

+15%

+22.5%

+30%

nternal High Side Peak Current

Limit, IRQ Triggered Level

Below ILIMSET = all settings

-17.5%

-25%

-32.5%

Internal High Side Peak Current

Limit IRQ Signal Deglitch Time

16 consecutive clocks at 2.25MHz

6.78

7.11

7.44

µs

PMOS On-Resistance

ISW = -500mA, VIN_B4 = 3.3V

0.08

Ω

NMOS On-Resistance

ISW = 500mA, VIN_B4 = 3.3V

0.05

Ω

SW Leakage Current – NMOS

VIN_B4 = 5.5V, VSW = 5.5V

µA

SW Leakage Current – PMOS

VIN_B4 = 5.5V, VSW = 0V

µA

Dynamic Voltage Scaling Rate

B1_SLEW=00

B1_SLEW=01

B1_SLEW=10

B1_SLEW=11

not allowed

14.0

3.50

0.88

mV/µs

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