SC2569

Safety-Chip

© Safety-Chip Micro

5

www.safety-chip.com

SC2569_Datasheet_V1.0_EN

Electrical Characteristics(TA = 25℃, VDD=16V, RI=24KΩ unless otherwise noted)

Symbol

Parameter

Conditions

Min.

Typ.

Max.

Unit

Supply Voltage (VDD)

IDD_ST

Startup Current

VDD=15V

6.5

20

uA

IDD_OP

Operation Current

VFB=3V

2.0

mA

VDD_ON

Threshold Voltage to Startup

VDD Rising

14.5

15.5

16.5

V

VDD_OFF

Threshold

Voltage

to

Stop

Switching in Normal Mode

VDD Falling

8.5

9.5

10.5

V

VDD_OVP_ON

VDD Over voltage protection

Enter

23.5

25.0

26.5

V

VDD_OVP_OFF

VDD Over voltage protection

Exit (Recovery)

21.5

23.0

24.5

V

VDD_OVP_Hys

OVP Hysteresis

2.0

V

TD_VDD_OVP

VDD OVP Debounce time

80

uSec

VDD_Clamp

VDD Zener Clamp voltage

IVDD=5mA

30.0

V

Feedback Input Section(FB Pin)

VFB_Open

FB Open Loop Voltage

5.1

V

AV

PWM input gain

ΔVFB/ ΔVCS

2.8

V/V

DMAX

Max duty cycle

VFB=3V,VCS=0.3V

75

80

85

%

VRef_Green

The threshold enter green mode

2.3

V

VRef_Burst_H

The threshold exit Burst mode

1.5

V

VRef_Burst _L

The threshold enter Burst mode

1.4

V

IFB_Short

FB pin short circuit current

Short

FB

pin

to

GND

0.8

mA

VTH_PL

Power Limiting FB Threshold

Voltage

4.4

V

TD_PL

Power limiting Debounce Time

75

mS

ZFB_IN

Input Impedance

6.9

KΩ

Current Sense Input(SENSE Pin)

TSS

Soft start time

4

ms

TLEB

Leading edge blanking time

250

ns

TD_OC

Over

Current

Detection

and

Control Delay

120

ns

VTH_OC_0

Current

Limiting

Threshold

Voltage at No Compensation

IVIN=0uA

0.85

0.9

0.95

V

VTH_OC_1

Current

Limiting

Threshold

Voltage at Compensation

IVIN=150uA

0.81

V

Oscillator

FOSC

Normal Oscillation Frequency

VFB=3V, VCS=0V

60

65

70

KHz

FJR

Frequency jitter range

+/-5

%

FJitter

jitter frequency

65

Hz

FDT

Frequency

Variation

vs.

5

%