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L6590

(*) Parameters tracking one the other

(**) Parameter guaranteed by design, not tested in production

(***) Parameters guaranteed by design, functionality tested in production

CIRCUIT PROTECTIONS

Pulse-by-pulse Current Limit

di/dt = 120 mA/ µs

550

625

700

mA

OVP

Overvoltage Protection

16

16.5

17

V

LEB

Masking Time

After MOSFET turn-on (**)

120

ns

STANDBY SECTION

Oscillator Frequency

19

22

25

kHz

Peak switch current for Standby

Operation

80

mA

Peak switch current for Normal

Operation

190

mA

BROWNOUT PROTECTION (L6590D only)

Threshold Voltage

Voltage either rising or falling

2.4

2.5

2.6

V

Current Hysteresis

-30

-50

-70

µA

Clamp Voltage

5.6

6.4

7.2

V

THERMAL SHUTDOWN (***)

Threshold

150

165

°C

Hysteresis

40

°C

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

ELECTRICAL CHARACTERISTICS (continued)

Figure 1. Start-up & UVLO Thresholds

Figure 2. Start-up Current Generator

Start-up

UVLO

-50

0

50

100

150

6

8

10

12

14

16

Tj [°C]

Vcc [V]

Vdrain = 40 V

024

68

10

12

3

3.5

4

4.5

5

5.5

Vcc [V]

Icc [mA]

Tj = -25 °C

Tj = 25 °C

Tj = 125 °C