LED6000 datasheet(9/49 Pages) STMICROELECTRONICS

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LED6000

Electrical characteristics

IQOPVIN

Quiescent current from VIN

and VCC

LX floating, VFB = 1 V,

VBIAS = 3.3 V, FSW floating

0.9

1.4

IQOPVBIAS

Quiescent current from

VBIAS

1.5

2.4

Enable

VENL

Device OFF level

0.06

0.30

VENH

Device ON level

0.35

0.90

Soft-start

TSSSETUP Soft-start setup time

Delay from UVLO rising to switching

activity

(3)

640

s

ISSCH

CSS charging current

VSS = GND

4.3

5.0

5.7

A

Error amplifier

VFB

Voltage feedback

0.242

0.250 0.258

(1)

0.240

0.250 0.260

VCOMPH

VFB = GND; VSS = 3.2 V

3.20

3.35

3.50

VCOMPL

VFB = 3.2 V; VSS = 3.2 V

0.1

IFB

FB biasing current

VFB = 3.6 V

IOSOURCE

VFB = GND; SS pin floating;

VCOMP = 2 V

(3)

3.1

IOSINK

Output stage sinking

capability

Unity gain buffer configuration (FB

connected to COMP). No load on

COMP pin.

(3)

5mA

AV0

Error amplifier gain

(3)

100

GBWP

Unity gain buffer configuration (FB

connected to COMP). No load on

COMP pin.

(3)

MHz

Synchronization (fan out: 5 slave devices max.)

fSYN MIN Synchronization frequency

Pin FSW floating

280

kHz

VSYNOUT Master output amplitude

ILOAD = 4 mA

2.45

ILOAD = 0 A; pin SYNCH floating

3.8

VSYNOW Output pulse width

ILOAD = 0 A; pin SYNCH floating

150

215

280

VSYNIH

SYNCH slave high level

input threshold

2.0

VSYNIL

SYNCH slave low level

input threshold

1.0

ISYN

Slave SYNCH pull-down

current

VSYNCH = 5 V

450

700

950

A

VSYNIW Input pulse width

150

Table 5. Electrical characteristics (continued)

Symbol

Parameter

Test condition

Min.

Typ.

Max. Unit

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