ACT4911 datasheet(8/33 Pages) QORVO

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

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ACT4911

Power Loss Protection with 6A eFuse

INTERNAL BUCK REGULATOR

(VIN = 5V, TA = 25°C, unless otherwise specified)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNIT

Operating Input Voltage Range

4.2

Typical Output Voltage

3.3

Programmable Output Voltage Range Using external resistor divider

1.8

Standby Supply Current

VOUT = 103%, Regulator Enabled, No Load,

not switching

500

µA

Feedback Voltage

1.2

Output Voltage Accuracy

VOUT = 3.3V, IOUT = 2A (PWM mode)

-1%

VNOM

VOUT =3.3V, IOUT = 1mA (PFM mode)

-1%

VNOM

Line Regulation

VOUT = 3.3V, VIN = 5.5V to 12V, PWM Regulation

0.02

%/V

Load Regulation

VOUT = 3.3V, PWM Regulation

0.04

%/A

Power Good Threshold

VOUT Rising

90.5

95.5

%VNOM

Power Good Hysteresis

VOUT Falling

%VNOM

Overvoltage Fault Threshold

VOUT Rising

107

110

113

%VNOM

Overvoltage Fault Hysteresis

VOUT Falling

%VNOM

Programmable Switching Frequency

Range

320

1130

kHz

Current Limit, Cycle-by-Cycle

BK_CLIM = 00

BK_CLIM = 01

BK_CLIM = 10

BK_CLIM = 11

5.0

6.0

7.0

9.0

Current Limit, Cycle-by-Cycle Toler-

ance

At default BK_CLIM

-10%

+10%

At other set points

-15%

+15%

Current Limit, Shutdown

Above BK_CLIM

+15%

+22.5%

+30%

High Side On-Resistance

ISW = -3A, VSTR = 12V

Ω

Low Side On-Resistance

ISW = 3A, VSTR = 12V

Ω

SW Leakage Current

VSTR = 12V, VSW = 0 or 5.5V

µA

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