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PTH04T230W, PTH04T231W

SLTS271A – SEPTEMBER 2006 – REVISED OCTOBER 2006

ELECTRICAL CHARACTERISTICS (continued)

PTH04T230W

T

otherwise stated)

PARAMETER

TEST CONDITIONS

PTH04T230W

UNIT

MIN

TYP

MAX

External input capacitance

µF

Nonceramic

Capacitance value

µF

without

Ceramic

500

TurboTrans

Equivalent series resistance (non-ceramic)

7

m

Ω

External output capacitance

see table

5,000

Capacitance value

µF

with

(9)

(10)

Turbotrans

Capacitance

× ESR product (C

1000

10,000

µF×mΩ

Per Telcordia SR-332, 50% stress,

MTBF

Reliability

5.3

(6)

A 330 µF input capacitor is required for proper operation. The capacitor must be rated for a minimum of 400 mA rms of ripple current.

An additional 22-

µF ceramic input capacitor is recommended to reduce rms ripple current.

(7)

100 µF ceramic and 150 µF non-ceramic external output capacitance is required for basic operation. The minimum output capacitance

requirement increases when TurboTrans™ (TT) technology is used. See the Application Information for more guidance.

(8)

This is the calculated maximum disregarding TurboTrans™ technology. When the TurboTrans feature is used, the minimum output

capacitance must be increased. See the TurboTrans application notes for further guidance.

(9)

When using TurboTrans™ technology, a minimum value of output capacitance is required for proper operation. Additionally, low ESR

capacitors are required for proper operation. See the TurboTrans application notes for further guidance.

(10) This is the calaculated maximum when using the TurboTrans feature. Additionally, low ESR capacitors are required for proper operation.

See the TurboTrans application notes for further guidance.

5

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