Texas Instruments PT6502A, PT6502B, PT6502C, PT6502G, PT6502N Datasheet

• 8A Single Device Power

• Up to 90% efficiency (PT6501)

• Small SIP Footprint

• Standby Function

• Internal Short Circuit Protection

• Over-Temperature Protection

• Adjustable Output Voltage

The PT6500 series is Power Trends’
new high performance +3.1 to 6V
input, 8 Amp, 14-Pin SIP (Single In­line-Package) Integrated Switching
Regulator (ISR). This high-perfor-

mance ISR allows easy integration of
high-speed, low-voltage Pentium pro­cessors and their support logic into
existing 3.3V or 5V systems without
redesigning the central power supply.
The high-performance PT6502 solves
the problem of providing the low ter­minating voltages required by BTL/
Futurebus+, CTT, HP, and GTL Buses
from existing 3.3V or 5V power rails
without redesigning the central power
supply.

Ordering Information

PT6501¨ = 3.3 Volts
PT6502¨ = 1.5 Volts
PT6503¨ = 2.5 Volts
PT6504¨ = 3.6 Volts
PT6505¨ = 1.2 Volts
PT6506¨ = 1.8 Volts
PT6507¨ = 1.3 Volts
PT6508¨ = 1.7 Volts

PT Series Suffix

(PT1234X)

Case/Pin Heat Tab Configuration
Configuration None Side

Vertical Through-Hole

NR

Horizontal Through-Hole

AG

Horizontal Surface Mount

CB

Standard Application

C1 = Required 330µF electrolytic
C2 = Required 330µF electrolytic

V

IN

(+)

COM

PT6501,2,3

3

7,8,9,10

11,12,13

COM

V

OUT

(+)

C1 C2

INH

V

O

Adjust

4,5,6

14

Q1

Remote Sense
1

Pin-Out Information

8 AMP ADJUSTABLE ISR
WITH SHORT-CIRCUIT PROTECTION

PT6500 Series

For assistance or to order, call [phone]

2

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

Pin Function

1 Remote Sense
2 Do not connect
3 STBY*-Standby
4V

in

5V

in

6V

in

7

GND

8 GND

9 GND
10 GND
11 V

out

12 V

out

13 V

out

14 V

out

Adjust

Pkg Style 400

Specifications

Characteristics

PT6500 SERIES

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

Output Current I

o

Over Vin range 0.1* — 8.0 A

Current Limit I

cl

Vin=+5V — 13.0 20.0 A

Short Circuit Current I

sc

Vin=+5V — 15.0 — Apk

Input Voltage Range V

in

0.1≤ Io≤ 8.0A Vo=2.5V and 3.3V 4.5 — 6 V
V

o

=1.5V, 1.2V, 1.3V 3.1 — 6 V

Vo=3.6V 4.8 — 6 V

Output Voltage Tolerance ∆V

o

V

in

= +5V, Io = 8.0A Vo-0.1 — Vo+0.1 V

Ta = 0 to +70°C

Output Adjust Range V

o

V

nom

= 3.3V V

adj

= (PT6501) 2.25 — 4.20 Vinmin=3.1V

V

nom

= 1.5V V

adj

= (PT6502) 1.27 — 2.65 or Vo+ 1.2V

V

nom

= 2.5V V

adj

= (PT6503) 1.80 — 3.50 (whichever

Pin 14 to Vo or GND V

adj

= (PT6504) 2.50 4.30 is greater)

Line Regulation Reg

line

4.5V ≤ V

in

≤ 6.0V, Io = 8.0A (PT6501/4) — ±7 ±17

3.1V ≤ V

in

≤ 6.0V, Io = 8.0A (PT6502) — ±3 ±8 mV

4.5V ≤ V

in

≤ 6.0V, Io = 8.0A (PT6503) ±7 ±13

Load Regulation Reg

load

0.1 ≤ Io ≤ 8.0A, V

in

= +5V (PT6501/4) — ±17 ±33

(PT6502) — ±12 ±23 mV
(PT6503) ±13 ±25

Vo Ripple/Noise V

n

V

in

= +5V, Io = 8.0 Amp — 50 — mVpp

Transient Response

t

tr

Io step from 4A to 8.0A — 100 — µsec

with Co = 330µF V

os

Vo over/undershoot — 150 — mV

Efficiency η V

in

= +5V, Io = 3.0A (PT6501/6504) — 90 — %

(PT6502) — 76 — %
(PT6503) — 85 — %

V

in

= +5V, Io = 8.0A (PT6501/6504) — 83 — %

(PT6502) — 68 — %
(PT6503) — 76 — %

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

Note:

The PT6500 Series requires a 330µF electrolytic or tantalum input and output capacitor for proper operation in all applications.

See PT6000/7000 Series Capacitor application note.

†3.3V Input Bus Capable

†

†
†
†
†

Revised 7/15/98

Application Notes

Mechanical Outline

Product Selector Guide

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

PT6501, 3.3 VDC, Vin=5.0V

(See Note 1)

PT6502, 1.5 VDC, Vin=5.0V

(See Note 1)

PT6503, 2.5 VDC, Vin=5.0V

(See Note 1)

Efficiency vs Output Current Efficiency vs Output Current Efficiency vs Output Current

Ripple vs Output Current Ripple vs Output Current Ripple vs Output Current

For assistance or to order, call [phone]

3

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

5V to 3.x Converters

3.3V Bus Products

DATA SHEETS

PT6500 Series

CHARACTERISTIC DATA

Specifications (continued)

Characteristics

PT65000 SERIES

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

Switching Frequency ƒ

o

Over Vin and Io ranges 475 600 725 KHz

Absolute Maximum T

a

0—+85°C

Operating Temperature Range
Recommended Operating T

a

V

in

= +5V, Io = 6.0A

0 — +70** °C

Temperature Range Free Air Convection (40-60LFM)
Thermal Resistance θ

ja

Free Air Convection (40-60LFM) — 15 — °C/W

Storage Temperature T

s

— -40 — +125 °C

Mechanical Shock Per Mil-STD-883D, Method 2002.3, — 500 — G’s

1msec, half sine, fixture mounted

Mechanical Vibration — 7.5 — G’s

Weight — 23 — grams

** See Thermal Derating charts.

Note: The PT6500 Series requires a 330µF electrolytic or tantalum input and output capacitor for proper operation in all applications.

Power Dissipation vs Output CurrentPower Dissipation vs Output Current Power Dissipation vs Output Current

0

1

2

3

4

5

6

7

012345678

Iout-(Amps)

Pd-(Watts)

6.0V

5.5V

5.0V

4.5V

Vin

0

1

2

3

4

5

6

012

345678

Iout-(Amps)

Pd-(Watts)

6.0V

5.0V

4.5V

4.0V

3.5V

3.1V

Vin

0

1

2

3

4

5

6

7

012345678

Iout-(Amps)

Pd-(Watts)

6.0V

5.5V

5.0V

4.5V

4.0V

Vin

40

50

60

70

80

90

100

012345678

Iout-(Amps)

Efficiency-%

4.5V

5.0V

5.5V

6.0V

Vin

40

50

60

70

80

90

100

012345678

Iout-(Amps)

Efficiency-%

3.1V

3.5V

4.0V

4.5V

5.0V

6.0V

Vin

40

50

60

70

80

90

100

012345678

Iout-(Amps)

Efficiency-%

4.0V

4.5V

5.0V

5.5V

6.0V

Vin

0

5

10

15

20

25

30

35

012345678

Iout-(Amps)

Ripple-(mV)

6.0V

5.5V

5.0V

4.5V

Vin

0

10

20

30

40

50

01

2345678

Iout-(Amps)

Ripple-(mV)

3.1V

3.5V

4.0V

4.5V

5.0V

6.0V

Vin

0

10

20

30

40

50

60

012345678

Iout-(Amps)

Ripple-(mV)

6.0V

5.5V

5.0V

4.5V

4.0V

Vin

0

1

2

3

4

5

6

7

8

4.5 4.75 5 5.25 5.5 5.75 6
Vin-(Volts)

Iout-(Amps)

50˚C

35˚C

25˚C

60˚C

70˚C

85˚C

Vin-(Volts)

Iout-(Amps)

0

1

2

3

4

5

6

7

8

4.5 4.75 5 5.25 5.5 5.75 6

35˚C
50˚C

70˚C
85˚C

Vin-(Volts)

Iout-(Amps)

0

1

2

3

4

5

6

7

8

4.5 4.75 5 5.25 5.5 5.75 6

70˚C

85˚C

60˚C

0

1

2

3

4

5

6

7

8

4.5 4.75 5 5.25 5.5 5.75 6

Vin-(Volts)

Iout-(Amps)

50˚C

85˚C

70˚C

60˚C

0

1

2

3

4

5

6

7

8

4.5 4.75 5 5.25 5.5 5.75 6
Vin-(Volts)

Iout-(Amps)

85˚C

70˚C

0

1

2

3

4

5

6

7

8

4.5 4.75 5 5.25 5.5 5.75 6
Vin-(Volts)

Iout-(Amps)

85˚C

70˚C

0

1

2

3

4

5

6

7

8

3 3.5 4 4.5 5 5.5 6

Vin-(Volts)

Iout-(Amps)

50˚C

60˚C

70˚C

85˚C

0

1

2

3

4

5

6

7

8

3 3.5 4 4.5 5 5.5 6

Vin-(Volts)

Iout-(Amps)

50˚C

60˚C

70˚C

85˚C

0

1

2

3

4

5

6

7

8

3 3.5 4 4.5 5 5.5 6

Vin-(Volts)

Iout-(Amps)

70˚C

85˚C

0

1

2

3

4

5

6

7

8

3 3.5 4 4.5 5 5.5 6

Vin-(Volts)

Iout-(Amps)

50˚C

85˚C

70˚C

60˚C

Vin-(Volts)

Iout-(Amps)

0

1

2

3

4

5

6

7

8

3 3.5 4 4.5 5 5.5 6

85˚C

70˚C

Vin-(Volts)

Iout-(Amps)

0

1

2

3

4

5

6

7

8

3 3.5 4 4.5 5 5.5 6

85˚C

70˚C

Thermal Derating (Ta) (See Note 2)

THERMAL DERATING CURVES
Air Flow (LFM)

60 200 300
PT6501 (See Note 1)

No Heat Tab

Note 1: All data listed in the above graphs, except for derating data, has been developed from actual products tested at 25°C. This data is considered typical data for the ISR.
Note 2: Thermal derating graphs are developed in different air flow rates as indicated on each graph, with or without the heat tab, soldered in a printed circuit board. (See Thermal Application Notes.)

Thermal Derating (Ta) (See Note 2)

Heat Tab

Thermal Derating (Ta) (See Note 2)

Thermal Derating (Ta) (See Note 2)

Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2)

PT6502 (See Note 1)
No Heat Tab

Thermal Derating (Ta) (See Note 2)

Heat Tab

Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2)

Thermal Derating (Ta) (See Note 2)

Thermal Derating (Ta) (See Note 2) Thermal Derating (Ta) (See Note 2)

PT6500 THERMAL DATA

For assistance or to order, call [phone]

4

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