Texas Instruments PT6701A, PT6701C Datasheet

Standard Application

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

Pin-Out Information

Pin Function

1 OVP Drive
2 Pwr Good
3 VID0
4 VID1
5 VID2
6 VID3
7 VID4
8 STBY*
9 Do not connect
10 V

in

11 V

in

12 V

in

Pin Function

13 Remote Sense Gnd
14 GND
15 GND
16 GND
17 GND
18 GND
19 V

out

20 V

out

21 V

out

22 V

out

23 Remote Sense V

out

PT6700

The PT6700 is a new series of
high-performance, 13 Amp Integrated
Switching Regulators (ISRs) housed in
a unique, space-saving 23-pin SIP
package. The 13A capability allows
easy integration of the latest high­speed, low-voltage µPs and bus drivers
into existing 5V systems.

The output voltage of the PT6700
can be programmed easily from 1.3V
to 3.5V with a 5-bit input compatible

with Intel’s Pentium



II Processor.

The PT6700 includes a differential
remote sense which automatically com­pensates for any voltage drop from the
ISR to the load. Also provided are
internal short circuit protection,
OVP drive and a power good output
signal. When over-voltage is de­tected, the PT6700 provides drive for
an external crowbar or other protec­tion circuitry.

For assistance or to order, call [phone]

Cin= Required 1000µF electrolytic
C

out

= Required 330µF electrolytic
L1 = Optional 1µH input choke
R1 = Required 10kΩ pull-up when using Pwr Good signal. Pwr good

output is high when the output voltage is within specification.

Specifications

Characteristics

PT6700 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

*

—13A

Ta = +25°C, natural convection 0.1

*

—13A

Input Voltage Range V

in

0.1A ≤ I

o

≤ 13A 4.5 — 5.5 V

Output Voltage Tolerance ∆V

o

V

in

= +5V, Io = 13A

V

o-0.03 — Vo+0.03 V

-40°C ≤ Ta ≤ +65°C

Line Regulation Reg

line

4.5V ≤ V

in

≤ 5.5V, I

o

= 13A — ±10 — mV

Load Regulation Reg

load

Vin = +5V, 0.1 ≤ I

o

≤ 13A — ±20 — mV

Vo Ripple/Noise V

n

V

in

= +5V, Io = 13A — 50 — mV

Transient Response t

tr

Io step between 6A and 12A — 70 — µSec

with C

out

= 330µF V

os

Vo over/undershoot — 100 — mV

Efficiency η V

in

= +5V, Io = 8A Vo = 3.3V — 91 — %

V

o

= 2.9V — 90 — %

V

o

= 2.5V — 89 — %

V

o

= 1.8V — 85 — %

V

o

= 1.5V — 83 — %

Switching Frequency ƒ

o

4.5V ≤ V

in

≤ 5.5V

300 350 400 kHz

0.1A ≤ I

o

≤ 12.5A

Absolute Maximum T

a

— -40 — +85 °C

Operating Temperature Range
Recommended Operating T

a

Forced Air Flow = 200 LFM

-40 — +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 — TBD — G’s

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

— TBD — G’s

20-2000 Hz, Soldered in a PC board

Weight — — — 26 — grams

* ISR-will operate down to no load with reduced specifications.

Output Capacitors:

The PT6700 series requires a minimum ouput capacitance of 330µF. The maximum allowable output capacitance is 15,000µF.

Input Filter:

An input filter is optional for most applications. The input inductor must be sized to handle 12.5ADC with a typical value of 1µH. The input capacitance must

be rated for a minimum of 1.6Arms of ripple current. For transient or dynamic load applications, additional capacitance may be required.

Revised 9/13/99

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

PT6700

10 - 12

14 - 18

19 - 22

2

V

IN

GND

1µH

GND

V

OUT

C

OUT

+

C

IN

+

13

233

L1

PWR GOOD

LOAD

REMOTE SENSE (+)

REMOTE SENSE (-)

VID1
VID2
VID3
VID4

PROGRAMMING PINS

456

STBY*

8

7

VID0

OVP DRV

1

R1

13 AMP PROGRAMMABLE
INTEGRATED SWITCHING REGULATOR

Series

Patent pending on package assembly

New Space-Saving Package

Programming Information

VID4=1 VID4=0

VID3 VID2 VID1 VID0 Vout Vout

1 1 1 1 2.0V 1.30V
1 1 1 0 2.1V 1.35V
1 1 0 1 2.2V 1.40V
1 1 0 0 2.3V 1.45V
1 0 1 1 2.4V 1.50V
1 0 1 0 2.5V 1.55V
1 0 0 1 2.6V 1.60V
1 0 0 0 2.7V 1.65V
0 1 1 1 2.8V 1.70V
0 1 1 0 2.9V 1.75V
0 1 0 1 3.0V 1.80V
0 1 0 0 3.1V 1.85V
0 0 1 1 3.2V 1.90V
0 0 1 0 3.3V 1.95V
0 0 0 1 3.4V 2.00V
0 0 0 0 3.5V 2.05V

• Space Saving SIP Package

• +5V input

• 5-bit Programmable:

1.3V to 3.5V@13A

• High Efficiency

• Input Voltage Range:

4.5V to 5.5V

• Differential Remote Sense

• Short Circuit Protection

• Over-Voltage Drive

• Power Good Signal

Features

For assistance or to order, call [phone]

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

PT6701, Vin = 5.0V (Typical performance at T

a

= 25°C)

Efficiency vs Output Current

Ripple vs Output Current

Power Dissipation vs Output Current

Efficiency (%)Ripple (mV)

Pd (Watts)

Iout (A)

Iout (A)

Iout (A)

Series

Ordering Information

PT6701

❏❏

❏❏

❏ = 1.3 to 3.5 Volts

(For dimensions and PC board layout,
see Package Styles 1300 and 1310.)

PT Series Suffix

(PT1234X)

Case/Pin
Configuration

Vertical Through-Hole

N

Horizontal Through-Hole

A

Horizontal Surface Mount

C

Logic 0 = Pin 13 potential (remote sense gnd)
Logic 1 = Open circuit (no pull-up resistors)
VID3 and VID4 may not be changed while the unit is operating.

PT6700

CHARACTERISTIC DATA

40

50

60

70

80

90

100

024681012

3.3V

2.5V

1.8V

0

5

10

15

20

25

30

024681012

3.3V

2.5V

1.8V

0

1

2

3

4

5

6

024681012

3.3V

2.5V

1.8V

Vout

Vout

Vout

20

30

40

50

60

70

80

90

024681012

200LFM

120LFM

60LFM

Nat co nv

Ambient temperature (°C)

Safe Operating Area, Vout = 3.3V

Iout-(A)

PT6701, Vin = 5.0V

Airflow

PT6700 Product Family

Input Vout OVP/ Requires

Voltage Adjust Pwr Good +12V Bias

PT6701 5V VID

✓✓

✓✓

✓

PT6702 3.3V VID

✓✓

✓✓

✓

PT6705 5V Resistor

✓✓

✓✓

✓

PT6715 5V Resistor
PT6721 12V VID

✓✓

✓✓

✓

PT6725 12V Resistor