TEA1733T datasheet(10/17 Pages) NXP

Nome de Peças	TEA1733T

Descrição Electrónicos	GreenChip SMPS control IC

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Fabricante Electrônico	NXP [NXP Semiconductors]

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TEA1733T_TEA1733LT_1

Objective data sheet

Rev. 01 — 26 October 2009

10 of 17

NXP Semiconductors

TEA1733T; TEA1733LT

GreenChip SMPS control IC

9.

Thermal characteristics

10. Characteristics

Table 4.

Thermal characteristics

Symbol

Parameter

Conditions

Typ

Unit

Rth(j-a)

thermal resistance from

junction to ambient

in free air; JEDEC test board

150

K/W

Rth(j-c)

thermal resistance from

junction to case

in free air; JEDEC test board

79

K/W

Table 5.

Characteristics

Tamb =25 °C; VCC = 20 V; all voltages are measured with respect to ground (pin 6); currents are positive when ﬂowing into

the IC; unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply voltage management (pin VCC)

Vstartup

start-up voltage

18.6

20.6

22.6

V

Vth(UVLO)

undervoltage lockout

threshold voltage

11.2

12.2

13.2

V

Vclamp(VCC)

clamp voltage on pin

VCC

activated during restart

-

Vstartup +1

-

V

activated during latched

protection

-Vrst(latch) +1 -

V

Vhys

hysteresis voltage

Vstartup − Vth(UVLO)

8

9

10

V

ICC(startup)

start-up supply current

VCC <Vstartup

510

15

µA

ICC(oper)

operating supply current no load on pin DRIVER

0.4

0.5

0.6

mA

Vrst(latch)

latched reset voltage

4

5

6

V

Input voltage sensing (pin VINSENSE)

Vstart(VINSENSE)

start voltage on pin

VINSENSE

detection level

0.89

0.94

0.99

V

Vdet(L)(VINSENSE)

LOW-level detection

voltage on pin

VINSENSE

0.68

0.72

0.76

V

Vdet(H)(VINSENSE)

HIGH-level detection

voltage on pin

VINSENSE

3.39

3.52

3.65

V

IO(VINSENSE)

output current on pin

VINSENSE

-

−20

-

nA

Vclamp(VINSENSE)

clamp voltage on pin

VINSENSE

II(VINSENSE) =50 µA

-

5.2

-

V

Protection input (pin PROTECT)

Vdet(L)(PROTECT)

LOW-level detection

voltage on pin

PROTECT

0.47

0.50

0.53

V

Vdet(H)(PROTECT)

HIGH-level detection

voltage on pin

PROTECT

0.75

0.8

0.85

V

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