OZ960 Просмотр технического описания (PDF) - O2Micro International

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OZ960

Intelligent CCFL Inverter Controller / SOP 20 PIN

O2Micro International 

OZ960

Parameter

Max. / Min. Overlap

Min. Overlap between

diagonal switches

Max. Overlap between

diagonal switches

Brake before Make

PDR_A / NDR_B

PDR_C / NDR_D

Symbol

Test Conditions

Limits

Unit

VDDA = 5V; Tamb = 25oC

Min

Typ

Max

HF = 60kHz

Ca=Cb=Cc=Cd=2nF(3)

3.0

4.5

5.5

%

HF = 60kHz

Ca=Cb=Cc=Cd=2nF(3)

78

81

84

%

See Table 1, below

See Table 1, below

Parameter

Symbol

Test Conditions

OZ960

Limits

Unit

OZ960I

Limits

Unit

Low Frequency Oscillator

Initial accuracy

fosc

Supply

Min

LCT = 6.8nF, LPWM = 50k(2) 160

Typ Max

Min

220 250 Hz 150

Typ Max

220 340 Hz

SST current

CTIMR current

Brake before Make

ISST

ICTIMR

4.9

7.5

10 µA 4.9

6.0

12 µA

2.2

3.3

4.5 µA 2.0

3.0

5.2 µA

PDR_A / NDR_B

HF = 60kHz

250 380 530 ns 250 380 565 ns

PDR_C / NDR_D

HF = 60kHz

250 380 520 ns 250 380 545 ns

Threshold

Enable

1.35 1.50 1.65 V 1.25 1.50 1.65 V

Table 1. Low Frequency Oscillator, Supply and Brake

before Make Specifications for OZ960 and OZ960I

Note (1)

CT: capacitor from CT (Pin 18) to ground

RT: resistor from RT (Pin 17) to ground

Note (2)

LCT: capacitor from LCT (Pin 15) to ground

LPWM: resistor from LPWM (Pin 13) to ground

Note (3)

Ca: capacitor from PDR_A (Pin 19) to VDDA

Cb: capacitor from NDR_B (Pin 20) to ground

Cc: capacitor from PDR_C (Pin 12) to VDDA

Cd: capacitor from NDR_D (Pin 11) to ground

OZ960-DS-1.6

Page 6

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