CS51221 Ver la hoja de datos (PDF) - Cherry semiconductor

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componentes Descripción

Fabricante

CS51221

Enhanced Voltage Mode PWM Controller

Cherry semiconductor 

Electrical Characteristics: -40˚C < TA < 85˚C; -40˚C < TJ < 125˚C; 3V < VC < 15V; 4.7V < VCC < 15V; Rt=12K, Ct=390pF

Unless otherwise stated.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

s Start/Stop Voltages

Start Threshold

Stop Threshold

Hysteresis

ICC @ Startup

Start - Stop

VCC < UVL Start Threshold

4.4

4.6

3.2

3.8

400

850

38

4.7

V

4.1

V

1400

mV

75

µA

s Supply Current

ICC Operating

IC Operating

IC Operating

1nF Load on GATE

No switching

9.5

14

mA

12

18

mA

2

4

mA

s Reference Voltage

Total Accuracy

Line Regulation

Load Regulation

Noise Voltage

Op Life Shift

Fault Voltage

VREF(OK) Voltage

VREF(OK) Hysteresis

Current Limit

0mA < IREF < 2mA

0mA < IREF < 2mA

10Hz < F < 10kHz (Note 1)

T = 1000Hrs. (Note 1)

3.2

3.3

3.4

V

6

20

mV

6

15

mV

50

µV

4

20

mV

2.8

2.95

3.1

V

2.9

3.05

3.2

V

30

100

150

mV

2

40

100

mA

s Error Amp

Reference Voltage

VFB Input Current

Open Loop Gain

Unity Gain Bandwidth

COMP Sink Current

COMP Source Current

COMP High Voltage

COMP Low Voltage

PSRR

SS Clamp, VCOMP

COMP Max Clamp

VFB = COMP

VFB = 1.2V

(Note 1)

(Note 1)

COMP = 1.4V, VFB = 1.45V

COMP = 1.4V, VFB = 1.15V

VFB = 1.15V

VFB = 1.45V

Freq = 120Hz (Note 1)

SS = 1.4V, VFB = 0V, ISET = 2V

Note 1

1.234

60

1.5

3

1

2.8

75

60

1.3

1.7

1.263

1.3

12

1.6

3.1

125

85

1.4

1.8

1.285

2

32

2.0

3.4

300

1.5

1.9

V

µA

dB

MHz

mA

mA

V

mV

dB

V

V

3

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