VIV0105THJ

Rev. 1.5

9/2009

Page 2 of 16

V•I CHIP INC. (A VICOR COMPANY) 25 FRONTAGE RD. ANDOVER, MA 01810 800-735-6200

vicorpower.com

PRELIMINARY DATASHEET

ABSOLUTE MAXIMUM RATINGS

+IN to –IN . . . . . . . . . . . . . . . . . . . . . . . . . -1.0 Vdc – +53 Vdc

PC to –IN . . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 Vdc – +20 Vdc

TM to –IN . . . . . . . . . . . . . . . . . . . . . . . . . -0.3 Vdc – +7.0 Vdc

+IN/-IN to +OUT/-OUT . . . . . . . . . . . . . . . . . . . 2250 V (Hi Pot)

+IN/-IN to +OUT/-OUT . . . . . . . . . . . . . . . . . . . . 60 V (working)

+OUT to –OUT . . . . . . . . . . . . . . . . . . . . . . -1.0 Vdc - +10 Vdc

Temperature during reflow . . . . . . . . . . . . . . . . . 225°C (MSL5)

PACKAGE ORDERING INFORMATION

PART NUMBER

DESCRIPTION

VIV0105THJ

VIV0105MHJ

CONTROL PIN SPECIFICATIONS

See section 5.0 for further application details and guidelines

.

The PC pin can enable and disable the VTM. When held below

2.0 V the VTM will be disabled. When allowed to float with an

impedance to –IN of greater than 60 k

Ω the module will start.

The PC pin is capable of being driven high either by an external

logic signal or internal pull up to 5 V (operating).

The TM pin monitors the internal temperature of the VTM

within an accuracy of ±5 °C. It has a room temperature

setpoint of ~3.0 V and an approximate gain of 10 mV/°C. It

can source up to 100 µA and may also be used as a “Power

Good” flag to verify that the VTM is operating.

IM (V•I Chip Current Monitor)

The IM pin provides a DC analog voltage proportional to the

output current of the VTM. This voltage varies between 0.3

and 2.1 V and represents VTM output current within 25% of

the actual value under all operating line temperature conditions

between 50% and 100% load.

VC (VTM Control)

In typical applications the VC pin of the VTM is tied to the VC

pin of the PRMTM Regulator. In these applications the PRM

provides a temporary VC voltage during startup synchronizing

the output rise of the two devices. In addition, the VC port

provides feedback to the PRM on to its output resistance

through an internal resistor.

For applications which do not use a PRM, a voltage between 12 V

and 17 V must be applied to VC in order to enable the VTM.

PC

VC

TM

IM

Bottom View

4

3

2

1

+Out

-Out

+In

-In

A

B

C

D

J

K

L

M

E

F

G

H

Signal

Name

Designation

+In

A1-B1, A2-B2

–In

L1-M1, L2-M2

IM

E1

TM

F2

VC

G1

PC

H2

+Out

A3-D3, A4-D4

–Out

J3-M3, J4-M4