Data Sheet Rev. F, February 10, 2025 | Subject to change without notice

9 of 43

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ACT43750

RF POL Drain-Switch Driver / Gate-bias Regulator

®

ELECTRICAL SPECIFICATIONS

VD = V50 = 50V, V12 = 12V, VG = ‒2.5V, VBT50 = 55.2V, VSCL = VSDA = VENCAL = VENG = VENTX = VSCL50 = VSDA50 = VNTC = 5V, VREFIN =

0V, TA = ‒40 to +125 °C, unless otherwise specified

Parameter

Conditions

Min

Typ

Max

Units

Supply Rails, System Main

IQ(V12)

V12 Standby Current

VSDA=VSCL=VENTX=VENCAL=VENG=0V

1.5

mA

II(V12)

V12 Consumption Current

4

mA

VIT+(OV12)

V12 Input Over Voltage

14

V

VIT-(UV12)

V12 Input Under Voltage

10

V

II(V50,H)

V50 Consumption Current

VD = 50V

200

µA

II(V50,L)

V50 Consumption Current

VD = 0V

200

µA

VIT+(OV50)

V50 Input Over Voltage

65

V

VIT+(UV50)

V50 Input Under Voltage

10

V

TSD

Thermal Shutdown

TJ, die temperature rising to disable

160

oC

TSD(OFF)

Thermal Shutdown Release

TJ, die temperature falling to enable

145

oC

TWARN

Thermal Warning

TJ, die temperature warning

140

oC

REFERENCE SYSTEM

V5

V5 Bias Regulator Output

Voltage

IO(V5) = 0 to 20 mA

4.85

5

5.15

V

RPD(REFIN)

REFIN Input Pull-down

Resistance

REFIN to AGND

100

k

Ω

VGREF/VREFIN

REFIN to GREF Conversion

Ratio (ratio of the floating

reference voltage to the

external reference voltage)

(VGREF - VG)/(VREFIN – VAGND), external reference

level-shift gain

+1

Δ(V

GREF/VREFIN)

REFIN to GREF Conversion

Ratio

(VGREF - VG)/(VREFIN – VAGND),

VREFIN = 0.75 V and 3.0 V

99%

101%

VGREF/VDACG

VDACG to GREF Conversion

Ratio (ratio of the floating

reference voltage to the DAC

voltage)

(VGREF - VG)/(VDACG – VAGND), internal DAC level-

shift gain

+1

VREFIN(MAX)

REFIN Window-comparator

Threshold

High-side valid input window

3.0

V

VREFIN(MIN)

REFIN Window-comparator

Threshold

Low-side valid input window,

Below device-internal DACG value

VDACG

VGREF, DAC 100%

DACG Reference Accuracy

Monitor VGREF VG w.r.t. DACG[12:0] = 0x1FFFh

2.925

3.00

3.075

V

VGREF, DAC25%

DACG Reference Accuracy

Monitor VGREF VG w.r.t. DACG[12:0] = 0x0400h

0.735

0.75

0.765

V

Δ

VGREF, DAC

DACG Reference Accuracy

VGREF difference DACG[12:0] code from “N-1” to

“N”

0

+ 366

µV