VIPER22A datasheet(4/15 Pages) STMICROELECTRONICS

部件名	VIPER22A

功能描述	LOW POWER OFF LINE SMPS PRIMARY SWITCHER

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制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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4 / 15 page

VIPer22ADIP / VIPer22AS

4/15

ELECTRICAL CHARACTERISTICS (Tj=25°C, VDD=18V, unless otherwise specified)

SUPPLY SECTION

Note: 1. These test conditions obtained with a resistive load are leading to the maximum conduction time of the device.

OSCILLATOR SECTION

PWM COMPARATOR SECTION

OVERTEMPERATURE SECTION

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

IDDch

Start Up Charging

Current

VDS=100V; VDD=0V ...VDDon (See fig. 2)

-1

mA

IDDoff

Start Up Charging

Current

in Thermal Shutdown

VDD=5V; VDS=100V

Tj > TSD - THYST

0mA

IDD0

Operating Supply Current

Not Switching

IFB=2mA

35

mA

IDD1

Operating Supply Current

Switching

IFB=0.5mA; ID=50mA

(Note 1)

4.5

mA

DRST

Restart Duty Cycle

(See fig. 3)

16

%

VDDoff

VDD Undervoltage

Shutdown Threshold

(See fig. 2 & 3)

7

8

9

V

VDDon

VDD Start Up Threshold

(See fig. 2 & 3)

13

14.5

16

V

VDDhyst

VDD Threshold

Hysteresis

(See fig. 2)

5.8

6.5

7.2

V

VDDovp

VDD Overvoltage

Threshold

38

42

46

V

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

FOSC

Oscillator Frequency

Total Variation

VDD=VDDoff ... 35V; Tj=0 ... 100°C

54

60

66

kHz

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

GID

IFB to ID Current Gain

(See fig. 4)

560

IDlim

Peak Current Limitation

VFB=0V

(See fig. 4)

0.56

0.7

0.84

A

IFBsd

IFB Shutdown Current

(See fig. 4)

0.9

mA

RFB

FB Pin Input Impedance

ID=0mA

(See fig. 4)

1.2

k

Ω

td

Current Sense Delay to

Turn-Off

ID=0.4A

200

ns

tb

Blanking Time

500

ns

tONmin

Minimum Turn On Time

700

ns

Symbol

Parameter

Test Conditions

Min.

Typ.

Max.

Unit

TSD

Thermal Shutdown

Temperature

(See fig. 5)

140

170

°C

THYST

Thermal Shutdown

Hysteresis

(See fig. 5)

40

°C

类似零件编号 - VIPER22A

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STMicroelectronics	VIPER22A-E	409Kb / 21P	Low power OFF-line SMPS primary switcher November 2010 Rev 2
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