PTH03060YAS datasheet(3/19 Pages) TI

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ELECTRICAL SPECIFICATIONS

PTH03060Y

PTH05060Y, PTH12060Y

SLTS222A–MARCH 2004–REVISED OCTOBER 2005

TA =25°C; nominal VIN;VREF =1.25V;CIN,CO1, and CO2 = typical values; and IO =IOmax (unless otherwise stated)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Output current

Over ∆VREF range

Continuous

±10(1)

PTH03060Y

2.95

3.65

VIN

Input voltage range

Over IO range

PTH05060Y

4.5

5.5

PTH12060Y

10.8

13.2

∆VREF

Tracking range for VREF

0.55

1.8

|VTT–VREF|

Tracking tolerance to VREF

Over line, load and temperature

–10

PTH03060Y

86%

Efficiency

Io = 8 A

PTH05060Y

86%

PTH12060Y

83%

Vo Ripple (pk-pk)

20 MHz bandwidth

mVpp

Io trip

Overcurrent threshold

Reset, followed by auto recovery

ttr

Recovery time

µsec

15 A/µs load step, from:

Load transient response

–1.5 A to 1.5 A

Vtr

VO over/undershoot

PTH03060Y

2.45

2.8

VIN Increasing

PTH05060Y

4.3

4.45

PTH12060Y

9.5

10.4

UVLO

Under-voltage lockout

PTH03060Y

2.0

2.40

VIN Dncreasing

PTH05060Y

3.4

3.7

PTH12060Y

8.8

Inhibit control (pin 4)

VIN–0.5

Open(2)

VIH

Input high voltage

Referenced to GND

Inhibit control (pin 4)

–0.2

0.6

VIL

Input low voltage

Inhibit control (pin 4)

IIL inhibit

Pin to GND

130

µA

Input low curent

IIN inh

Input standby current

Inhibit control (pin 4) to GND

PTH03060Y/PTH05060Y

250

300

350

f s

Switching frequency

Over VIN and IO ranges

kHz

PTH12060Y

200

250

300

PTH03060Y/PTH05060Y

330(3)

CIN

External input capacitance

µF

PTH12060Y

560

Capacitance value: Nonceramic

PTH03060Y/PTH05060Y

470(4)

5500(5)

µF

PTH12060Y

940(4)

5500(5)

CO1, CO2

External output capacitance

PTH03060Y/PTH05060Y

200(4)

300

Capacitance value: Ceramic

µF

PTH12060Y

400(4)

600

Equuivanent series resistance (non-ceramic)

4(6)

mΩ

MTBF

Reliability

Per Bellcore TR-332 50 % stress, TA =40°C, ground benign

106 Hrs

(1) Rating is conditional on the module being directly soldered to a 4-layer PCB with 1 oz. copper. See the SOA curves or contact the

factory for appropriate derating.

(2) This control pin has an internal pull-up to the input voltage VIN. If it is left open-circuit the module will operate when input power is

applied. A small low-leakage (<100 nA) MOSFET is recommended for control. For further information, consult the related application

note.

(3) An input capacitor is required for proper operation. The capacitor must be rated for a minimum of 300 mA rms (750 mA rms for 12-V

input) of ripple current.

(4) The minimum value of external output capacitance value ensures that VTT meets the specified transient performance requirements for

the memory bus terminations. Lower values of capacitance may be possible when the measured peak change in output current is

consistently less than 3 A.

(5) This is the calculated maximum. The minimum ESR limitation will often result in a lower value. Consult the capacitor application notes

for further guidance.

(6) This is the typcial ESR for all the electrolytic (non-ceramic) output capacitance. Use 7 mΩ as the minimum when using max-ESR values

to calculate.

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