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0Z964SN

Phase-Shift PWM Controller

O2Micro International 

OZ964

ELECTRICAL CHARACTERISTICS

Parameter

Reference Voltage

Nominal voltage

Line regulation

Load regulation

Operating Frequency

Normal Operating Frequency

Ramp peak

Ramp valley

Low Frequency Oscillator

Operating frequency

Ramp peak

Ramp valley

Duty Cycle Range

Error Amplifier

Reference voltage at non-

inverting input pin (internal)

Under-Voltage Lockout

Positive-Going Threshold Voltage

Negative-Going Threshold Voltage

Supply

Stand-by Current

Supply Current

Soft Start

SST current

SST Protection Release Threshold

CTIMR

CTIMR current 1

CTIMR current 2

Protection release threshold

Symbol

Test Conditions

VDDA=5V; Tamb=25oC;

Limits

Unit

Min Typ Max

Vref

KL

KV

fop

CT Vpeak

CT Vvalley

Iload = 30µA

Temp coefficient

(Tamb=25oC)

VDDA=4.6V to 5.5V

Iload = 5 µA to 80 µA

CCT =220pF(1) ;

RRT =47kΩ(1)

Temp coefficient

(Tamb=25oC)

3.22 3.35 3.48

V

-

125

- ppm/oC

-

2

-

mV/V

-

2

-

mV

61.5 63.0 65.5 kHz

-

125

- ppm/oC

2.35 2.50 2.65

V

1.00 1.05 1.12

V

fLF

LCT Vpeak

LCT Vvalley

LPWM

CLCT=6.8nF(2); VDIM=1.2V

Temp coefficient

(Tamb=25oC)

209

-

1.96

0.27

0

220

470

2.06

0.31

-

225

Hz

- ppm/oC

2.18

V

0.33

V

100

%

VADJ

VSST=0V

VSST=2V

VSST=4V

0.49 0.50 0.55

V

0.79 0.80 0.81

V

1.19 1.24 1.29

V

4.3

-

-

V

-

-

3.2

V

IOFF

ENA=low

-

200 300

µA

ION

DIM=1.2V; LPWM=50kΩ

Ca=Cb=Cc=Cd=0.5nF(3)

CCT =220pF(1),

-

3.0 4.2

mA

RRT =47kΩ(1) ;CLCT=6.8nF(2)

Temp coefficient

(Tamb=25oC)

4.5 5.5 6.2

µA

-

420

- ppm/oC

VDDA VDDA VDDA

-1.25 -1.0 -0.93

V

Temp coefficient

(Tamb=25oC)

2.0

2.5

2.9

µA

-

395

- ppm/oC

20

30

40

µA

2.9

3.1

3.3

V

CONFIDENTIAL

OZ964-DS-1.2

Page 3

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