OZ9939 Просмотр технического описания (PDF) - O2Micro International

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OZ9939

LCDM Inverter Controller

O2Micro International 

OZ9939

ELECTRICAL CHARACTERISTICS

Parameter

Supply Current

Stand By

Operating

Soft Start

Current Source

Symbol

Test Conditions

Limits

VDDA=5V; Ta=25 oC

RCT =39Kohm, CCT=470pF

Min

Typ

Max

RLCT =3.3Mohm, CLCT=4.7nF

Idds

ENA=0V

2.0

5.0

Idd

Capacitance at DRV1 &

DRV2=2nF

1.5

2.0

2.5

Unit

µA

mA

ISSTCMP

1.83

2.29

2.75

µA

Under Voltage Lockout

Lock Out

UVLO

VDDA 5VÆ0V

Resume

UVLO

VDDA 0VÆ5V

4.0

Reference Voltage

3.2

V

V

ISEN Reference Voltage

ISEN=SSTCMP

Temperature Coefficient

1.12

1.18

1.23

V

360

ppm/ OC

VSEN Reference Voltage

During Striking

Driver Frequency

Striking

Normal Operation

Timer and Protection

Striking Current Source

VSEN=SSTCMP

Temperature Coefficient

2.78

2.92

3.06

V

310

ppm/ OC

62.6

65.8

69.0

KHZ

fstr

Temperature Coefficient

290

ppm/ OC

50.0

52.0

54.0

kHz

Fop

Temperature Coefficient

110

ppm/ OC

ISEN =0V

2.3

2.9

3.5

uA

Open Lamp and Over Voltage

Protection Current Source

SSTCMP > 3.3V or

VSEN>OVPT

8.0

10.0

12.0

uA

Protection Release Threshold

Drivers

2.60

2.81

3.02

V

DRV1/2 Source

Ron

DRV1/2 Sink

Ron

Maximum Duty Cycle

12

18

Ω

5

9

Ω

45

%

CONFIDENTIAL

OZ9939-DS-1.1

Page 3

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