L6228 datasheet(6/26 Pages) STMICROELECTRONICS

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L6228

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Vth(ON)

Turn-on Input Threshold

1.8

2.0

Vth(OFF)

Turn-off Input Threshold

0.8

1.3

Vth(HYS) Input Threshold Hysteresis

0.25

0.5

Switching Characteristics

tD(ON)EN Enable to Output Turn-on Delay

Time (8)

ILOAD =1.4A, Resistive Load

500

650

800

tD(OFF)EN Enable to Output Turn-off Delay

Time (8)

ILOAD =1.4A, Resistive Load

500

800

1000

tRISE

Output Rise Time (8)

ILOAD =1.4A, Resistive Load

250

tFALL

Output Fall Time (8)

ILOAD =1.4A, Resistive Load

250

tDCLK

Clock to Output Delay Time (9)

ILOAD =1.4A, Resistive Load

µs

tCLK(min)L Minimum Clock Time (10)

1µs

tCLK(min)

Minimum Clock Time (10)

1µs

fCLK

Clock Frequency

100

KHz

tS(MIN)

Minimum Set-up Time (11)

1µs

tH(MIN)

Minimum Hold Time (11)

1µs

tR(MIN)

Minimum Reset Time (11)

1µs

tRCLK(MIN

)

Minimum Reset to Clock Delay

Time (11)

1µs

tDT

Dead Time Protection

0.5

µs

fCP

Charge Pump Frequency

Tj = -25°C to 125°C

(7)

0.6

MHz

PWM Comparator and Monostable

IRCA, IRCB Source Current at pins RCA and

RCB

VRCA = VRCB = 2.5V

3.5

5.5

Voffset

Offset Voltage on Sense

Comparator

VREFA, VREFB = 0.5V

±5

tPROP

Turn OFF Propagation Delay (12)

500

tBLANK

Internal Blanking Time on

SENSE pins

1µs

tON(MIN) Minimum On Time

2.5

µs

tOFF

PWM Recirculation Time

ROFF = 20KΩ; COFF = 1nF

µs

ROFF = 100KΩ; COFF = 1nF

µs

ELECTRICAL CHARACTERISTICS (continued)

(Tamb = 25°C, Vs = 48V, unless otherwise specified)

Symbol

Parameter

Test Conditions

Min

Typ

Max

Unit

L6228 数据表(PDF) 6 Page - STMicroelectronics

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