CR6853 Просмотр технического описания (PDF) - ChengduChip-RailTech

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производитель

CR6853

Novel Low Cost Green-Power PWM Controller

ChengduChip-RailTech 

CR6853

Electrical Characteristics (Ta=25°C unless otherwise noted, VDD = 15V)

Symbol

Parameter

Conditions Min. Typ. Max. Unit

Supply Voltage (VDD Pin)

IST

Startup Current

3.0 20.0 µA

VFB=0V

3.0

mA

ISS

Operating Current

VFB=3V

1.4

mA

VFB=Open

1.0

mA

VDDON Turn-on Threshold Voltage

13.0 14.0 15.0 V

VDDOFF Turn-off Threshold Voltage

7.8 8.8 9.8 V

VDDCLAMP VDD Clamp Voltage

IVDD=10mA

34.0

V

VDDAIS

Anti Intermission Surge

VDD Voltage

12.7

V

TOFF

TRESTART

Over temperature Protection

Temperature restart

130

℃

100

℃

Voltage Feedback (FB Pin)

IFB

VFB

IFB_0D

IPFM

ICRM

VPFM

VCRM

IOLP&SCP

VOLP&SCP

TOLP&SCP

Short Circuit Current

Open Loop Voltage

Zero Duty Cycle FB current

Enter PFM FB current

Enter CRM FB current

Enter PFM Threshold VFB

Enter CRM Threshold VFB

Enter OLP&SCP FB current

Enter OLP&SCP FB voltage

OLP&SCP min. delay Time

VFB=0V

VFB=Open

RI=100K

1.2

mA

4.8

V

1.47

mA

1.37

mA

1.45

mA

0.51

V

0.30

V

152

uA

3.7

V

33 35 50 mS

Current Sensing (SEN Pin)

VTH_L

SEN Minimum Voltage Level

VTH_H

SEN Maximum Voltage Level

TPD

Delay to Output

RCS

Input Impedance

VSCP Sense short protect voltage

Dec, 2007 V1.1

Chengdu Chip-Rail Tech. Co., Ltd.

RI=100K,

FB=3.3V

RI=100K,

FB=3.3V

FB=3.3V

0.70

V

0.80

V

75

ns

40

KΩ

177

mV

4/11

http://www.chiprail.com

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