PTH03010YAS datasheet(3/18 Pages) TI

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ELECTRICAL SPECIFICATIONS

PTH03010Y

PTH05010Y

PTH12010Y

SLTS223A–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

PTH03010Y/PTH05010Y

±15(1)

Output current

Over ∆VREF range

PTH12010Y

±12(1)

PTH03010Y

2.95

3.65

VIN

Input voltage range

Over IO range

PTH05010Y

4.5

5.5

PTH12010Y

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

PTH03010Y

88%

Efficiency

Io = 10 A

PTH05010Y

88%

PTH12010Y

85%

Vo Ripple (pk-pk)

20 MHz bandwidth

mVpp

Reset, followed by auto recovery

PTH03010Y/PTH05010Y

27.5

Io trip

Overcurrent threshold

PTH12010Y

ttr

Recovery time

µsec

15 A/µs load step, from –1.5 A to

Load transient response

1.5 A

Vtr

VO over/undershoot

PTH03010Y

2.45

2.8

VIN Increasing

PTH05010Y

4.3

4.45

PTH12010Y

9.5

10.4

UVLO

Under-voltage lockout

PTH03010Y

2.0

2.40

VIN Dncreasing

PTH05010Y

3.4

3.7

PTH12010Y

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 (pin 3) to GND

PTH03010Y/PTH05010Y

250

300

350

f s

Switching frequency

Over VIN and IO ranges

kHz

PTH12010Y

200

250

300

PTH03010Y/PTH05010Y

470(3)

CIN

External input capacitance

µF

PTH12010Y

560(3)

PTH03010Y/PTH05010Y

470(4)

8200(5)

Capacitance value: Nonceramic

µF

PTH12010Y

940(4)

6600(5)

CO1, CO2

External output capacitance

PTH03010Y/PTH05010Y

200(4)

300

Capacitance value: Ceramic

µF

PTH12010Y

400(4)

600

Equiv. 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 a minimum of 500 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 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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