TEA1751(L)T View Datasheet(PDF) - NXP Semiconductors.

Part Name

Description

Manufacturer

TEA1751(L)T

HV start-up DCM/QR flyback controller with integrated DCM/QR PFC controller

NXP Semiconductors. 

NXP Semiconductors

TEA1751T; TEA1751LT

GreenChip III SMPS control IC

Table 5. Characteristics …continued

Tamb = 25 °C; VCC = 20 V; all voltages are measured with respect to ground (pin 2); currents are positive when flowing into

the IC; unless otherwise specified.

Symbol

Parameter

Conditions

Min Typ Max Unit

td(vrec-swon)

valley recognition to switch-on

delay time

[5] -

150 -

ns

Soft start flyback (pin FBSENSE)

Istart(soft)fb

flyback soft start current

Vstart(soft)fb

flyback soft start voltage

Rstart(soft)fb

flyback soft start resistance

Overcurrent protection flyback (pin FBSENSE)

enable voltage

−75 −60 −45 μA

0.43 0.49 0.54 V

12 -

-

kΩ

Vsense(fb)max

maximum flyback sense

voltage

ΔV/Δt = 50 mV/μs

ΔV/Δt = 200 mV/μs

0.49 0.52 0.55 V

0.52 0.55 0.58 V

tleb(fb)

flyback leading edge blanking

time

255 305 355 ns

Istart(OPP)FBAUX

OPP start current on pin

FBAUX

-

−100 -

μA

Iopp(red)(FBAUX)

reduced overpower protection Vsense(fb)max has reduced to

current on pin FBAUX

0.37 V

-

−360 -

μA

Driver (pin FBDRIVER)

Isrc(FBDRIVER)

source current on pin

FBDRIVER

VFBDRIVER = 2 V

-

−0.5 -

A

Isink(FBDRIVER)

VO(FBDRIVER)(max)

sink current on pin FBDRIVER

maximum output voltage on pin

FBDRIVER

VFBDRIVER = 2 V

VFBDRIVER = 10 V

-

0.7 -

A

-

1.2 -

A

-

11 12 V

LATCH input (pin LATCH)

Vprot(LATCH)

protection voltage on pin

LATCH

1.23 1.25 1.27 V

IO(LATCH)

Ven(LATCH)

Vhys(LATCH)

output current on pin LATCH

enable voltage on pin LATCH

hysteresis voltage on pin

LATCH

Vprot(LATCH) < VLATCH < Voc(LATCH)

at start-up

Ven(LATCH) − Vprot(LATCH)

−85 −80 −75 μA

1.30 1.35 1.40 V

80 100 140 mV

Voc(LATCH)

open-circuit voltage on pin

LATCH

2.65 2.9 3.15 V

Temperature protection

Tpl(IC)

Tpl(IC)hys

IC protection level temperature

hysteresis of IC protection level

temperature

130 140 150 °C

-

10 -

°C

[1] For a typical application with a compensation network on pin PFCCOMP, like the example in Figure 3.

[2] Minimum required voltage change time for valley recognition on pin PFCAUX.

[3] Minimum time required between demagnetization detection and ΔV/Δt = 0 on pin PFCAUX.

[4] Hysteresis for PFC on/off control.

[5] Guaranteed by design.

TEA1751T_LT_2

Product data sheet

Rev. 02 — 23 December 2009

© NXP B.V. 2009. All rights reserved.

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