BL8305A datasheet(7/8 Pages) BELLING

Part #	BL8305A

Description	BALLAST CONTROL IC

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Manufacturer	BELLING [SHANGHAI BELLING CO., LTD.]

Direct Link	http://www.belling.com.cn

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BL8305A

BL8305A BALLAST CONTROL IC

BALLAST CONTROL IC

http://www.belling.com.cn

- 7 -

8/28/2006

Total 8 Pages

Filament

Filament Preheat Voltage Remove

Preheat Voltage Remove

The BL8305A provides a control signal (PIN Poff) to switch off the filament

preheat voltage. When it done with the ignition and turns into run mode, Poff will

output a high level after about 1s delay (drive ability 20mA). This high level can

close the switch K and turn off the filament voltage.

ABSOL

ABSOLUTE MAXIMUM RATIONS

UTE MAXIMUM RATIONS

Absolute maximum ratings indicate sustained limits beyond which damage to the

device may occur. All voltages parameter are absolute voltages referenced to

GND, all current are defined positive into any lead.

Parameter

Symbol

Definition

Min.

Max

Units

Vcc(1)

Supply voltage

---

30

V

VRpre

Preheat frequency timing voltage

1

7

V

IRt

Oscillator output current

---

1

mA

VPro

Current sensing voltage

-0.3

Vdc

V

Iout1

Output current of Out1

200

mA

Iout2

Output current of Out2

200

mA

TS

Storage temperature

-55

150

℃

Note 1: Only for BHF mode. In MHF mode VCC should less than 15V.

RECOMMENDED OPERATING CONDITIONS

Parameter

Symbol

Definition

Min.

Typ.

Max.

Units

Vcc

Supply voltage

--

15

--

V

VRpre

Preheat frequency timing voltage

1

--

4

V

IRt

Oscillator output current

20

82

200

uA

VPro

Current sensing voltage

0

--

Vdc

V

ELECTRICAL CHARACTERISTICS

TA=25℃，VCC=15V，Rpre1=150K，Rpre2=100K，Rt=17.7K，Ct=470pF，Cp=0.1uF，Vpro=0V，

ＶLD1= 3.2V，VHV=0

Parameters

Symbol

Definition

Min.

Typ.

Max.

Units

Test Condition

Power Supply Characteristics

VCCon

Power on Voltage

-

13.7

-

V

VCC rising from 0V

VCCoff

Shut down voltage

-

10

-

V

VCC falling from

15V

VDC

Internal power

regulator output

-

6.35

-

V

VCC=15V

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