AP74502Q, AP74502HQ

Document number: DS47093 Rev. 1 - 2

4 of 22

www.diodes.com

April 2025

© 2025 Copyright Diodes Incorporated. All Rights Reserved.

AP74502Q, AP74502HQ

, AP

Electrical Characteristics

(TJ = -40°C to +125°C, VIN = 12V, CVCAP = 0.1µF, VEN = 3.3V, typical values are at TJ = +25°C, unless otherwise specified.)

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

VIN Supply

VVIN

Operating Input Voltage

—

4

—

75

V

VVIN_POR_RISING

VIN UVLO Rising Threshold

—

—

—

3.9

V

VVIN_POR_FALLING

VIN UVLO Falling Threshold

—

2.2

2.8

3.1

V

VVIN_POR_HYS

VIN UVLO Hysteresis

—

0.44

—

0.67

V

ISHDN

Shutdown Supply Current

VEN_UVLO = 0V

—

0.9

1.5

µA

IQ

Operating Quiescent Current

VEN_UVLO = High

—

62

84

µA

IREV

Leakage Current During Reverse

Polarity Condition

0V < VVIN ≤ -65V

—

140

200

µA

EN/UVLO Input

VEN_UVLO_RISING

EN/UVLO Rising Threshold

—

1.16

1.24

1.32

V

VEN_UVLO_FALLING

EN/UVLO Falling Threshold

—

1.027

1.14

1.235

V

VEN_UVLO_HYS

EN/UVLO Hysteresis

—

38

90

132

mV

VENF

EN Threshold Voltage for ISHDN

—

0.32

0.64

0.94

V

IEN

EN/UVLO Sink Current

—

—

3

5

µA

GATE Drive

IGATE_SOURCE

Peak Source Current

VGATE – VSRC = 5.0V

AP74502Q

40

60

77

µA

AP74502HQ

3

11

—

mA

IGATE_SINK

Peak Sink Current

EN/UVLO = High to Low,

VGATE – VSRC = 5.0V

—

2370

—

mA

RDS_ON

GATE Discharge Switch RDS_ON

EN/UVLO = High to Low

VGATE – VSRC = 100mV

0.4

—

2

Ω

Charge Pump

VVCAP – VSRC

Charge Pump Voltage

at VSRC = 3.2V

IVCAP ≤ 30µA

8

—

—

V

Charge Pump Turn-On Voltage

—

10.3

11.6

13

V

Charge Pump Turn-Off Voltage

—

11

12.4

13.9

V

Charge Pump Turn-On/Off

Hysteresis

—

0.45

0.8

1.6

V

IVCAP_SOURCE

Charge Pump Source Current

VVCAP – VSRC = 7V

162

250

600

µA

IVCAP_SINK

Charge Pump Sink Current

VVCAP – VSRC = 14V

—

5

10

µA

VVCAP_UVLO_RISING

VVCAP – VSRC UVLO Rising

Threshold

—

5.7

6.5

7.5

V

VVCAP_UVLO_FALLING

VVCAP – VSRC UVLO Falling

Threshold

—

5.05

5.4

6.5

V

OVERVOLTAGE PROTECTION

VOV_RISING

Overvoltage Input Rising

Threshold

—

1.165

1.25

1.333

V

VOV_FALLING

Overvoltage Input Falling

Threshold

—

1.063

1.143

1.222

V

VOV_HYS

Overvoltage Hysteresis

—

—

100

—

mV

IOV

Overvoltage Input Leakage

Current

—

12

50

110

nA