CS51221

http://onsemi.com

3

MAXIMUM RATINGS

Rating

Value

Unit

Internally

Limited

−

Lead Temperature Soldering:

Reflow: (SMD styles only) (Note 1)

230 peak

°C

−65 to +150

°C

ESD (Human Body Model)

2.0

kV

Maximum ratings are those values beyond which device damage can occur. Maximum ratings applied to the device are individual stress limit

values (not normal operating conditions) and are not valid simultaneously. If these limits are exceeded, device functional operation is not implied,

damage may occur and reliability may be affected.

1. 60 second maximum above 183

°C.

MAXIMUM RATINGS

Pin Name

Pin Symbol

Gate Drive Output

GATE

15 V

−0.3 V

1.0 A Peak, 200 mA DC

1.0 A Peak, 200 mA DC

Current Sense Input

6.0 V

−0.3 V

1.0 mA

1.0 mA

Timing Resistor/Capacitor

6.0 V

−0.3 V

1.0 mA

10 mA

Feed Forward

FF

6.0 V

−0.3 V

1.0 mA

25 mA

Error Amp Output

COMP

6.0 V

−0.3 V

10 mA

20 mA

Feedback Voltage

6.0 V

−0.3 V

1.0 mA

1.0 mA

Sync Input

SYNC

6.0 V

−0.3 V

10 mA

10 mA

Undervoltage

UV

6.0 V

−0.3 V

1.0 mA

1.0 mA

Overvoltage

OV

6.0 V

−0.3 V

1.0 mA

1.0 mA

Current Set

6.0 V

−0.3 V

1.0 mA

1.0 mA

Soft−Start

SS

6.0 V

−0.3 V

1.0 mA

10 mA

Logic Section Supply

15 V

−0.3 V

10 mA

50 mA

Power Section Supply

15 V

−0.3 V

10 mA

1.0 A Peak, 200 mA DC

Reference Voltage

6.0 V

−0.3 V

lnternally Limited

10 mA

Power Ground

PGND

N/A

N/A

1.0 A Peak, 200 mA DC

N/A

Logic Ground

LGND

N/A

N/A

N/A

N/A

Characteristic

Test Conditions

Min

Typ

Max

Unit

Start/Stop Voltages

Start Threshold

−

4.4

4.6

4.7

V

Stop Threshold

−

3.2

3.8

4.1

V

Hysteresis

Start−Stop

400

850

1400

mV

−

38

75

mA

Supply Current

−

−

9.5

14

mA

1.0 nF Load on GATE

−

12

18

mA

No Switching

−

2.0

4.0

mA