DC-DC CONVERTERS

Non-isolated DDR/QDR Memory Bus Termination Module

1

NEW Product

File Name: pthxx060y.pdf Rev (02): 19 Dec 2005

2 YEAR WARRANTY

SPECIFICATIONS

PTHxx060Y

3.3/5/12 Vin Single Output

The PTHxx060Y are a new series of non-isolated dc-dc converters designed specifically

for bus termination in DDR and QDR memory applications. Operating from either a

3.3 Vdc, 5 Vdc or 12 Vdc input, the modules generate a VTT output that will source or

sink up to 10 A of current to accurately track their VREF input. VTT is the required bus

termination supply voltage, and VREF is the reference voltage for the memory and chipset

bus receiver comparators. VREF is usually set to half the VDDQ power supply voltage.

The PTHxx060Y series employs an actively switched synchronous rectifier output to

provide state of the art stepdown switching conversion. The products are small in size

and are an ideal choice where space, performance and high efficiency are desired.

OUTPUT SPECIFICATIONS

Output current

±10 A

(See Note 1)

0.55-1.8 V

-10 mV to +10 mV

(over line, load

and temperature)

Ripple and noise

20 MHz bandwidth

20 mV pk-pk

Load transient response

30 µs settling time

(See Note 4)

Overshoot/undershoot 25 mV typ.

Output capacitance:

Non-ceramic values

PTH03060Y 470 µF typ., 5,500 µF max.

(See Notes 4 and 5)

PTH05060Y 470 µF typ., 5,500 µF max.

PTH12060Y 940 µF typ., 5,500 µF max.

Ceramic values

PTH03060Y

200 µF typ., 300 µF max.

(See Note 4)

PTH05060Y

200 µF typ., 300 µF max.

PTH12060Y

400 µF typ., 600 µF max.

(See Note 6)

ESR (non-ceramic)

4 m

Ω min

INPUT SPECIFICATIONS

Input current

No load

10 mA

Input voltage range

PTH03060Y

2.95-3.65 Vdc

PTH05060Y

4.5-5.5 Vdc

PTH12060Y

10.8-13.2 Vdc

Undervoltage lockout:

PTH03060Y

Vin increasing

2.45 V typ., 2.80 V max.

Vin decreasing

2.20 V min., 2.40 V typ.

PTH05060Y

Vin increasing

4.30 V typ., 4.45 V max.

Vin decreasing

3.40 V min., 3.70 V typ.

PTH12060Y

Vin increasing

9.5 V typ., 10.4 V max.

Vin decreasing

8.80 V min., 9.0 V typ.

INPUT SPECIFICATIONS CONTD.

Input capacitance

PTH03060Y and PTH05060Y

330 µF

(See Note 3)

PTH12060Y

560 µF

Remote ON/OFF

Positive logic

GENERAL SPECIFICATIONS

Efficiency

PTH03060Y

86% typ.

(Io = 8 A)

PTH05060Y

86% typ.

PTH12060Y

83% typ.

Insulation voltage

Non-isolated

Switching frequency

PTH03060Y

550-650 kHz

PTH05060Y

550-650 kHz

PTH12060Y

200-300 kHz

Approvals and

EN60950

standards

UL/cUL60950

Material flammability

UL94V-0

Dimensions

(L x W x H)

25.27 x 15.75 x 9.00 mm

0.995 x 0.620 x 0.354 in

Weight

3.7 g (0.13 oz)

MTBF

Telcordia SR-332

6,000,000 hours

ENVIRONMENTAL SPECIFICATIONS

Thermal performance

Operating ambient,

-40 ºC to +85 ºC

(See Note 2)

temperature

Non-operating

-40 ºC to +125 ºC

MSL (‘Z’ suffix only)

JEDEC J-STD-020C

Level 3

PROTECTION

Overcurrent threshold

All models

20 A typ.

(auto reset)