AP3128

Document number: DS43487 Rev. 3 - 2

5 of 12

www.diodes.com

September 2021

© Diodes Incorporated

AP3128

Electrical Characteristics (@TA = +25°C, VCC = 16V, unless otherwise specified.)

Symbol

Parameter

Condition

Min

Typ

Max

Unit

Power Supply Voltage (VCC Pin)

IST

Startup Current

—

—

1

10

μA

ICC

Operating Supply Current

VFB = 2.5V, CGATE = 1nF

1.5

2

2.5

mA

IBURST

Operating Current at Burst

VFB = 0V, CGATE = 1nF

—

0.25

—

mA

VST

Turn-On Threshold Voltage

—

14.8

15.8

16.8

V

VCC-UVLO

VCC UVLO Voltage

—

—

6.5

7

V

VCC-OVP

VCC OVP Threshold Voltage

—

50

55

—

V

HV Section(HV Pin)

ICHARGE

Charge Current

VCC = 10V, VHV = 50V

—

2

—

mA

VBR-IN

Brown In Voltage

—

92

102

112

V

VBR-HYS

Voltage Gap between Brown-In

and Brown-Out Voltage.

—

7

8.5

—

V

tBR-OUT

Delay of Brown Out (Note 5)

—

—

64

—

ms

PWM Section/Oscillator Section

tON

-MAX

Maximum On Time

—

—

10

—

μs

fPWM-MAX

Maximum Clamp Frequency

—

90

105

120

kHz

fPWM-CCM

CCM Oscillation Frequency

—

72

80

88

kHz

fOSC-MIN

Minimum Clamp Frequency

—

20

23

—

kHz



fOSC-JITTER

Frequency Dithering (Note 5)

—

—

±6

—

%



Current Sense Section (SENSE Pin)

VCS-MAX

Maximum SENSE Voltage

VDEM = 3.1V

0.51

0.56

0.61

V

VTH-FOCP

FOCP Voltage

—

1.0

1.2

1.4

V

tDELAY-FOCP

FOCP Debounce Time

(Note 5)

—

—

7

—

Cycles

tLEB

LEB Time of SENSE

—

—

400

500

ns

Feedback Input Section (FB Pin)

KFB-CS

The Ratio of FB Input Voltage

to Current Sense Voltage

—

—

6

—

V/V

RFB

Input Impedance

—

—

32

—

kΩ

Note:

5. Guaranteed by design.