TEA1738FT 查看數據表（PDF） - NXP Semiconductors.

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TEA1738FT

GreenChip SMPS control IC

NXP Semiconductors. 

NXP Semiconductors

TEA1738FT

GreenChip 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

Current sense (pin ISENSE)

Vsense(max)

Vth(sense)opp

maximum sense

voltage

overpower protection

sense threshold

voltage

V/t = 50 mV/s;

VVINSENSE = 0.78 V

V/t = 200 mV/s;

VVINSENSE = 0.78 V

0.48

0.51

0.54

V

0.50

0.53

0.56

V

370

400

430

mV

VISENSE/t

slope compensation V/t = 50 mV/s, high

-

19

-

voltage on pin

power mode

ISENSE

mV/s

tleb

leading edge blanking

time

250

300

350

ns

Overpower compensation (pin VINSENSE and pin ISENSE)

Iopc(ISENSE)

overpower

VVINSENSE = 1 V;

-

0.28

-

A

compensation current Vsense(max) > 400 mV

on pin ISENSE

VVINSENSE = 3 V;

-

1.7

-

A

Vsense(max) > 400 mV

Soft start (pin ISENSE)

Istart(soft)

Vstart(soft)

soft start current

soft start voltage

VCTRL = 4 V;

enable voltage

63

55

47

A

-

Vsense(max) -

V

Rstart(soft)

soft start resistance

Driver (pin DRIVER)

12

-

-

k

Isource(DRIVER)

source current on pin VDRIVER = 2 V

DRIVER

-

0.3

0.25

A

Isink(DRIVER)

VO(DRIVER)max

sink current on pin

DRIVER

maximum output

voltage on pin

DRIVER

VDRIVER = 2 V

VDRIVER = 10 V

0.25

0.3

-

A

0.6

0.75

-

A

9

10.5

12

V

Temperature protection

Tpl(IC)

IC protection level

temperature

130

140

150

C

[1] The clamp voltage on the PROTECT pin is lowered when the IC is in Power-down mode (latched or restart protection).

TEA1738FT

Preliminary data sheet

All information provided in this document is subject to legal disclaimers.

Rev. 1 — 30 December 2010

© NXP B.V. 2010. All rights reserved.

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