Texas Instruments PT7602A, PT7602C, PT7602N Datasheet

Standard Application

For STBY* pin; open = output enabled; ground = output disabled.

Pin-Out Information

Pin Function

1 VID0
2 VID1
3 VID2
4 VID3
5 STBY* - Stand-by
6 Do not connect
7V

in

8V

in

9V

in

Pin Function

10 V

in

11 V

in

12 Remote Sense Gnd
13 GND
14 GND
15 GND
16 GND
17 GND
18 GND

SeriesPT7602

The PT7602 is a new series of
high-performance, 10A Integrated
Switching Regulators (ISRs) housed in
a 27-pin SIP package. The 10A
capability allows easy integration of the
latest high-speed, low-voltage µPs,
DSPs, ASICs, and bus drivers into
existing 3.3V systems.

The output voltage of the PT7602
can be easily programmed with a 4 bit
input compatible with Intel’s Pentium



II Processor. A differential remote sense
is also provided which automatically
compensates for any voltage drop from
the ISR to the load.

For assistance or to order, call [phone]

Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com

Cin= Required 1000µF electrolytic
C

out

= Required 330µF electrolytic

L1 = Optional 1µH input choke

PT7602

7 - 11

13 - 19

20 - 25

V

IN

GND

1µH

GND

V

OUT

C

OUT

+

C

IN

+

12

261

L1

LOAD

REMOTE SENSE (+)

REMOTE SENSE (-)

VID1
VID2
VID3

PROGRAMMING PINS

234

STBY*

5

VID0

3.3V INPUT 10A PROGRAMMABLE
INTEGRATED SWITCHING REGULATOR

Pin Function

19 GND
20 V

out

21 V

out

22 V

out

23 V

out

24 V

out

25 V

out

26 Remote Sense V

out

27 Do not connect

Specifications

Characteristics

PT7602 SERIES

(Ta = 25°C unless noted) Symbols Conditions Min Typ Max Units

Output Current I

o

Ta = +60°C, 200 LFM, pkg N 0.1

*

—10A

Ta = +25°C, natural convection 0.1

*

—10A

Input Voltage Range V

in

0.1A ≤ I

o

≤ 10A 3.1

**

— 3.6 V

Output Voltage Tolerance ∆V

o

V

in

= +3.3V, Io = 10A

V

o-0.03 — Vo+0.03 V

0°C ≤ Ta ≤ +65°C

Line Regulation Reg

line

3.1V ≤ V

in

≤ 3.6V, I

o

= 10A — ±10 — mV

Load Regulation Reg

load

Vin = +3.3V, 0.1 ≤ I

o

≤ 10A — ±10 — mV

Vo Ripple/Noise V

n

V

in

= +3.3V, Io = 10A — 50 — mV

Transient Response t

tr

Io step between 5A and 10A — 100 — µSec

with C

out

= 330µF V

os

Vo over/undershoot — 200 — mV

Efficiency η V

in

= +3.3V, Io = 7A Vo = 1.8V — 78 — %

V

o

= 1.5V — 76 — %

Switching Frequency ƒ

o

3.1V ≤ V

in

≤ 3.6V

650 700 750 kHz

0.1A ≤ I

o

≤ 10A

Absolute Maximum T

a

—0—+85°C

Operating Temperature Range
Recommended Operating T

a

Forced Air Flow = 200 LFM

0 — +65 °C

Temperature Range Over V

in and Io

Ranges

Storage Temperature T

s

— -40 — +125 °C

Mechanical Shock Per Mil-STD-883D, Method 2002.3

1 msec, Half Sine, mounted to a fixture — 500 — G’s

Mechanical Vibration Per Mil-STD-883D, Method 2007.2,

— 10 — G’s

20-2000 Hz, Soldered in a PC board

Weight — Vertical/Horizontal — 31/41 — grams

* ISR-will operate down to no load with reduced specifications. Please note that this product is not short-circuit protected.
** The minimum input voltage is 3.1V or V

out

+1.2V, whichever is greater.

Output Capacitors:

The PT7602 series requires a minimum ouput capacitance of 330µF for proper operation. Do not use Oscon type capacitors. The maximum

allowable output capacitance is 7,500µF.

Input Filter:

An input filter is optional for most applications. The input inductor must be sized to handle 10ADC with a typical value of 1µH. The input capacitance must be

rated for a minimum of 1.0Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.

Revised 11/10/98

Programming Information

VID3 VID2 VID1 VID0 Vout

1 1 1 1 1.30V
1 1 1 0 1.35V
1 1 0 1 1.40V
1 1 0 0 1.45V
1 0 1 1 1.50V
1 0 1 0 1.55V
1 0 0 1 1.60V
1 0 0 0 1.65V
0 1 1 1 1.70V
0 1 1 0 1.75V
0 1 0 1 1.80V
0 1 0 0 1.85V
0 0 1 1 1.90V
0 0 1 0 1.95V
0 0 0 1 2.00V

• +3.3V input

• 4-bit Programmable:

1.3V to 2.05V@10A

• High Efficiency

• Input Voltage Range:

3.1V to 3.6V

• Differential Remote Sense

• 27-pin SIP Package

Features

For assistance or to order, call [phone]

Power Trends, Inc. 27715 Diehl Road, Warrenville, IL 60555 [phone] Fax: [phone] http://www.powertrends.com

CHARACTERISTIC DATA

PT7602, Vo = 1.8 VDC (See Note 1)

Efficiency vs Output Current

Ripple vs Output Current

Power Dissipation vs Output Current

Efficiency (%)Ripple (mV)PD (Watts)

Iout (A)

Iout (A)

Iout (A)

Note 1:Note 1:

Note 1:Note 1:

Note 1: All data listed in the above graphs has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.

SeriesPT7602

Ordering Information

PT7602

❏❏

❏❏

❏ = 1.3 to 2.05 Volts

(For dimensions and PC board layout,
see Package Styles 800 and 810.)

PT Series Suffix

(PT1234X)

Case/Pin
Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

Logic 0 = Pin 12 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID3 may not be changed while the unit is operating.

40

50

60

70

80

90

100

0246810

0

5

10

15

20

25

30

0246810

0

1

2

3

4

5

6

7

8

0246810