LD7752 datasheet(5/17 Pages) LEADTREND

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LD7752

Leadtrend Technology Corporation

www.leadtrend.com.tw

LD7752-DS-01 June 2013

Electrical Characteristics

(TA = +25C unless otherwise stated, VCC=15.0V)

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

High-Voltage Supply (HV Pin, HV MOS process)

High-Voltage Current Source

VCC < UVLO(on)

1.1

1.3

1.5

Off-State Leakage Current

VCC > UVLO(off), HV=500V

A

Supply Voltage (VCC Pin)

Startup Current

VCC=15V, HV=500V

100

150

200

A

Operating Current

(with 1nF load on OUT pin)

VCOMP=0V

0.55

VCOMP=3V

2.0

OLP tripped

230

A

OVP tripped, VCC=OVP

230

A

UVLO (OFF)

7.0

8.0

9.0

UVLO (ON)

15.0

16.0

17.0

OVP Level

27.0

28.0

29.0

Voltage Feedback (COMP Pin)

Short Circuit Current

VCOMP=0V

0.14

0.17

0.20

Open Loop Voltage

COMP pin open

5.10

5.30

5.50

Fixed Frequency Mode Threshold

VCOMP

()

2.5

Green Mode Threshold VCOMP

()

25kHz

2.1

Burst Mode Threshold VCOMP

1.65

Current Sensing (CS Pin)

VCS-OFF

0.80

0.85

0.90

VCS-MIN

0.60

0.65

0.7

Leading Edge Blanking Time

250

Delay to Output

100

Oscillator for Switching Frequency

Frequency

62.0

65.0

68.0

kHz

Temp. Stability

()

Voltage Stability

()

(VCC =11V-25V)

Green Mode Frequency

65kHz

kHz

Frequency Swapping

65kHz

 4.0

kHz

Maximum Duty

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