1998 Mar 02

9

Philips Semiconductors

Product specification

High efficiency DC/DC converter

TEA1204T

Notes

1. The average inductor current during current limit also depends on inductance value and resistive losses in all

components in the power path. In normal applications, the average current will be limited to 2.3 A (typ.), with limits

scaled down to minimum 2.07 A and maximum 2.53 A.

increase is 300

µA in the event that pin 2 is at 2.0 V.

Current levels

quiescent current at pin 3

up mode

50

60

70

µA

shut-down current

−

210

µA

current limit NFET

up mode; note 1

2.38

2.80

3.20

A

current limit PFET

down mode; note 1

2.05

2.40

2.75

A

maximum continuous current

at pin 5

−−

1.0

A

Power MOSFETS

pin-to-pin resistance NFET

0.08

0.12

0.20

Ω

pin-to-pin resistance PFET

0.10

0.16

0.25

Ω

Timing

switching frequency

150

200

240

kHz

response time from standby to

−

25

−µs

Temperature

operating ambient temperature

−20

+25

+80

°C

internal cut-off temperature

150

165

180

°C

Digital levels

LOW-level input voltage pins

1, 2, 7 and 8

0

−

0.4

V

HIGH-level input voltage pin 1

note 2

HIGH-level input voltage pin 2

notes 2 and 3

2.0

−

HIGH-level input voltage

pins 7 and 8

notes 2 and 3

2.9

−

Sense pin resistance

SENSE pin resistance to GND

up or down to 3.3 V mode

437.2

546.5

655.8

k

Ω

down to 3.6 V mode

476.8

596.0

715.2

k

Ω

up to 5.0 V mode

662.2

827.8

993.4

k

Ω

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT