IR2157 View Datasheet(PDF) - International Rectifier

Part Name

Description

Manufacturer

IR2157

FULLY INTEGRATED BALLAST CONTROL IC

International Rectifier 

ADVANCED INFORMATION

IR2157

Electrical Characteristics (cont.)

Floating Supply Characteristics

Symbol Definition

IQBS0

IQBS1

VBSMIN

ILK

Quiescent VBS supply current

Quiescent VBS supply current

Minimum required VBS voltage for proper

HO functionality

Offset supply leakage current

Oscillator I/O Characteristics

Symbol Definition

fosc

Oscillator frequency

df/dV

df/dT

d

VCT+

VCT-

VCTFLT

Oscillator frequency voltage stability

Oscillator frequency temperature stability

Oscillator duty cycle

Upper CT ramp voltage threshold

Lower CT ramp voltage threshold

Fault-mode CT pin voltage

VRT

RT pin voltage

VRTFLT Fault-mode RT pin voltage

tdlo

toho

dtd/dV

dtd/dT

LO output deadtime

HO output deadtime

Deadtime voltage stability

Deadtime temperature stability

Preheat Characteristics

Symbol Definition

ICPH

CPH pin charging current

VCPHIGN CPH pin lgnition mode threshold voltage

VCPHRUN CPH pin run mode threshold voltage

VCPHCLMP CPH pin clamp voltage

VCPHFLT Fault-mode CPH pin voltage

Min.

—

—

—

Typ.

0

30

4

—

—

Min. Typ.

—

30

—

100

—

0.5

—

0.02

—

50

—

4.0

—

2.0

—

0

—

2.0

—

0

—

2.0

—

2.0

—

0.5

—

0.02

Min.

—

—

—

—

—

Typ.

1.0

4.0

5.15

7.6

0

Max.

—

—

5

Units Test Conditions

µA

VHO = VS

VHO = VB

V

50

µA

VB = VS = 600V

Max.

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Units Test Conditions

kHz

%/V

%/C

%

RT = 32kΩ, RDT =

6.1kΩ, CT=470pF

RT = 6.1kΩ, RDT =

6.1kΩ, CT=470pF

VCCUV+ < VCC < 15V

-40oC < Tj < 125oC

V

mV

SD = 5V, CS = 2V,

or Tj > TSD

V

SD = 5V, CS = 2V,

mV

or Tj > TSD

µsec

%/V VCCUV+ < VCC < 15V

%/C -40oC < Tj < 125oC

Max.

—

—

—

—

—

Units Test Conditions

µA

VCPH = 0V

V

ICPH = 1mA

mV

SD = 5V, CS = 2V,

or Tj > TSD

5

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