Texas Instruments PT6624M, PT6624P, PT6624Q, PT6624R, PT6622R Datasheet

Standard Application

C1 = Required 330µF electrolytic
C2 = Required 330µF electrolytic
Q1= NFET-or Open Collector Gate

6 AMP 12V INPUT
INTEGRATED SWITCHING REGULATOR

PT6620 Series

PT6620

4,5,6

7,8,9,10

11,12,13

V

IN

COM

COM

V

OUT

C

2

+

C

1

+

1

3

STBY

Q

1

REMOTE SENSE

LOAD

Ordering Information

PT6621¨ = +3.3 Volts
PT6622¨ = +1.5 Volts
PT6623¨ = +2.5 Volts
PT6624¨ = +3.6 Volts
PT6625¨ = +5.0 Volts
PT6626¨ = +9.0 Volts

• Single Device: 6A Output

• Input Voltage Range: 9V to 14V

• Adjustable Output Voltage

• 83% Efficiency

• Remote Sense Capability

• Standby Function

• Over-Temperature Protection

The PT6620 series is a new addition
to Power Trends’ line of 12V bus Inte­grated Switching Regulators (ISRs).

Designed for stand-alone operation in
applications requiring as much as 6A of
output current, the PT6620 is packaged
in a 14-Pin SIP (Single In-line Package)
and is available in a surface-mount con­figuration.

Only two external capacitors are
required for proper operation. Please
note that this product does not include
short circuit protection.

PT Series Suffix

(PT1234X)

Case/Pin Heat Heat Spreader
Configuration Spreader with Side Tabs

Vertical Through-Hole

PR

Horizontal Through-Hole

DG

Horizontal Surface Mount

EB

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

Pin-Out Information

For assistance or to order, call [phone]

48

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

Note: Back surface
of product is
conducting metal

Pkg Style 400

Specifications

Characteristics

PT6620 SERIES

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

Output Current I

o

Ta = 60°C, 200 LFM, pkg P 0.1* — 6.0** A
Ta = 25°C, natural convection 0.1* — 6.5** A

Input Voltage Range V

in

0.1A ≤ I

o

≤ 6.0A V

o

≤ +5V +9 — +14 V

+6V≤Vo≤+9V Vo+3 — +14 V

Output Voltage Tolerance ∆V

o

V

in

= +12V, Io = 6.0A

Ta = 0 to 60°C

V

o-0.1 — Vo+0.1 V

Output Voltage Adjust Range V

oadj

Pin 14 to V

o

or ground Vo = +3.3V 2.3 — 4.5

V

o

= +1.5V 1.4 — 2.7

V

o

= +2.5V 1.9 — 3.7 V

V

o

= +3.6V 2.5 — 4.8

V

o

= +5.0V 2.9 — 6.5

V

o

= +9.0V 5.2 — 10.0

Line Regulation Reg

line

+9V≤Vin≤+14V, Io = 6.0A — ±0.5 ±1.0 %V

o

Load Regulation Reg

load

Vin = +12V, 0.1≤ Io≤6.0A — ±0.5 ±1.0 %V

o

Vo Ripple/Noise V

n

V

in

= +12V, Io = 6.0A Vo < +6V — 50 — mVpp

V

o

> +6V — 1.0 — %V

o

Transient Response t

tr

Io step between 3.0A and 6.0A — 100 — µSec

with C2 = 330µF V

os

Vo over/undershoot — 150 — mV

Efficiency η V

in

= +12V, Io = 3.0A V

o

= +3.3/3.6V — 84 — %

V

o

= +1.5V — 68 — %

V

o

= +2.5V — 76 — %

V

o

= +5.0V — 86 — %

V

o

= +9.0V — 93 — %

V

in

= +12V, Io =6.0A V

o

= +3.3/3.6V — 83 — %

V

o

= +1.5V — 66 — %

V

o

= +2.5V — 75 — %

V

o

= +5.0V — 85 — %

V

o

= +9.0V — 92 — %

* ISR will operate down to no load with reduced specifications.
** See SOA curves - Output power is limited to 30W maximum.

Note:

The PT6620 Series requires a 330µF(output) and 330µF(input) electrolytic capacitors for proper operation in all applications.

Revised 2/5/99

Application Notes

Mechanical Outline

Product Selector Guide

CHARACTERISTIC DATA

PT6620 Series

For assistance or to order, call [phone]

49

12V Bus Products

DATA SHEETS

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

PT6621P, 3.3V

Note: SOA curves represent operating conditions at which internal components are at or below manufacturer’s maximum rated operating temperatures.

Efficiency vs Output Current

Efficiency (%)

Output Current (A)

Ambient Temperature (°C)

Output Current (A)

Airflow

Recommended Maximum

Operating Temperature

Ambient Temperature (°C)

Output Current (A)

Airflow

PT6620 Series @VPT6620 Series @V

PT6620 Series @VPT6620 Series @V

PT6620 Series @V

in=+12Vin=+12V

in=+12Vin=+12V

in=+12V

Recommended Maximum

Operating Temperature

Specifications (continued)

Characteristics

PT6620 SERIES

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

Switching Frequency ƒ

o

9V ≤ V

in

≤ 14V 500 650 775 kHz

0.1A ≤ I

o

≤ 6.0A PT6622 500 550 600 kHz

Recommended Operating T

a

Free Air Convection (40-60 LFM)

-40 — +65** °C

Temperature Range Over V

in

and Io ranges with heat tab

Absolute Maximum T

a

-40 — +85 °C

Operating Temperature Range
Storage Temperature T

s

— -40 — +125 °C
Mechanical Shock — Per Mil-STD-883D, Method 2002.3 — 500 — G’s
Mechanical Vibration — Per Mil-STD-883D, Method 2007.2,

— 7.5 — G’s

20-2000 Hz, soldered in a PC board
Weight — — — 14 — grams

** See SOA curves - Output power is limited to 30W maximum.
Note: The PT6620 Series requires a 330µF(output) and 100µF(input) electrolytic capacitors for proper operation in all applications.

PT6622P, 1.5VOutput Ripple vs Output Current

Power Dissipation vs Output Current

Output Current (A)

Output Current (A)

Ripple (mVpp)

Pd (Watts)

Safe Operating Area Curves @VSafe Operating Area Curves @V

Safe Operating Area Curves @VSafe Operating Area Curves @V

Safe Operating Area Curves @V

in=+12Vin=+12V

in=+12Vin=+12V

in=+12V

20

30

40

50

60

70

80

90

01234567

Nat conv
60LFM
120LFM
200LFM

20

30

40

50

60

70

80

90

012345 67

Nat conv
60LFM
120LFM
200LFM

Ambient Temperature (°C)

Output Current (A)

Airflow

Recommended Maximum

Operating Temperature

PT6625P, 5.0V

20

30

40

50

60

70

80

90

01234567

Nat conv
60LFM
120LFM
200LFM

40

50

60

70

80

90

100

0123456

PT6621
PT6622
PT6623
PT6625
PT6626

0

5

10

15

20

25

30

0123456

PT6621
PT6622
PT6623
PT6625
PT6626

0

1

2

3

4

5

0123456

PT6621
PT6622
PT6623
PT6625
PT6626

For assistance or to order, call [phone]

3

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

Application Notes

PT6620 Series

More Application Notes

Adjusting the Output Voltage of the
PT6620 7Amp12V Bus Converter Series

The output voltage of the Power Trends PT6650 Series ISRs
may be adjusted higher or lower than the factory trimmed pre­set voltage with the addition of a single external resistor. Table 1
accordingly gives the allowable adjustment range for each model
in the series as Va (min) and Va (max).

Adjust Up: An increase in the output voltage is obtained by
adding a resistor R2, between pin 14 (V

o

adjust) and pins 7-10

(GND).

Adjust Down: Add a resistor (R1), between pin 14 (V

o

adjust)

and pins 11-13 (V

out

).

Refer to Figure 1 and Table 2 for both the placement and value
of the required resistor, either (R1) or R2 as appropriate.

Notes:

1. Use only a single 1% resistor in either the (R1) or R2 loca­tion. Place the resistor as close to the ISR as possible.

2. Never connect capacitors from V

o

adjust to either GND,

V

out

, or the Remote Sense pin. Any capacitance added to

the Vo adjust pin will affect the stability of the ISR.

3. If the Remote Sense feature is being used, connecting the
resistor (R1) between pin 14 (Vo adjust) and pin 1 (Remote
Sense) can benefit load regulation.

4. The minimum input voltage required by the part is V

out

+ 3,

or 9V, whichever is higher.

5. The maximum output current must be limited to the equiva­lent of 30Watts.

i.e.

I

out

(max) =

12

Adc,

V

a

where Va is the adjusted output voltage.

Figure 1

C

in

330µF

+

C

out

330µF

+

(R1)
Adj Down

R2
Adjust Up

Vo

COMCOM

Vin PT6620

11,12,13

147,8,9,10

4,5,6

Vin Vo

GND Vo(adj)

STBY

3

Vsense

1

L
O
A
D

The values of (R1) [adjust down], and R2 [adjust up], can
also be calculated using the following formulae.

Ro (Va – 1.25)

(R1) =

(V

o

– Va)

– R

s

kΩ

1.25 R

o

– R

s

kΩ

R2 =

V

a

- V

o

Where: Vo= Original output voltage

V

a

= Adjusted output voltage

R

o

= The resistance value in Table 1

R

s

= The series resistance from Table 1

Table 1

PT6620 ADJUSTMENT AND FORMULA PARAMETERS

Series Pt # PT6622 PT6623 PT6621 PT6624 PT6625 PT6626
Vo (nom) 1.5V 2.5V 3.3V 3.6V 5.0V 9.0V

Va (min) 1.4V 1.9V 2.3V 2.5V 2.9V 5.2V
Va (max) 2.7V 3.7V 4.5V 4.8V 6.5V 10.0V
Ro (k

ΩΩ

ΩΩ

Ω) 4.99 10.0 12.1 12.1 16.2 12.1

Rs (k

ΩΩ

ΩΩ

Ω) 2.49 4.99 12.1 12.1 12.1 12.1

For assistance or to order, call [phone]

4

Application

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

Notes

PT6620 Series

Table 2

PT6620 ADJUSTMENT RESISTOR VALUES

Series Pt # PT6622 PT6623 PT6621 PT6624 PT6625 Series Pt # PT6625 PT6626
Current 7.5Adc 7.5Adc 7.5Adc 7.5Adc 6.0Adc Current 6Adc 3.3Adc
Vo (nom) 1.5Vdc 2.5Vdc 3.3Vdc 3.6Vdc 5.0Vdc Vo (nom) 5.0Vdc 9.0Vdc
Va (req’d) Va (req’d)

1.4 (5.0)kΩ 5.2 89.1k (0.5)kΩ

1.5 5.3 55.4k (1.1)kΩ

1.6 59.9k 5.4 38.5k (1.9)kΩ

1.7 28.7k 5.5 28.4k (2.6)kΩ

1.8 18.3k 5.6 21.7k (3.4)kΩ

1.9 13.1k (5.8)kΩ 5.7 16.8k (4.2)kΩ

2.0 10.0k (10.0)kΩ 5.8 13.2k (5.1)kΩ

2.1 7.9k (16.3)kΩ 5.9 10.4k (6.1)kΩ

2.2 6.4k (26.7)kΩ 6.0 8.2k (7.1)kΩ

2.3 5.3k (47.5)kΩ (0.6)kΩ 6.1 6.3k (8.1)kΩ

2.4 4.4k (110.0)kΩ (3.4)kΩ 6.2 4.8k (9.3)kΩ

2.5 3.8k (6.8)kΩ (1.7)kΩ 6.3 3.5k (10.5)kΩ

2.6 3.2k 120.0k (11.2)kΩ (4.2)kΩ 6.4 2.4k (11.9)kΩ

2.7 57.5k (17.1)kΩ (7.4)kΩ 6.5 1.4k (13.3)kΩ

2.8 36.7k (25.4)kΩ (11.3)Ω 6.6 (14.9)kΩ

2.9 26.3k (37.8)kΩ (16.4)kΩ (0.6)kΩ 6.7 (16.6)kΩ

3.0 20.0k (58.5)kΩ (23.2)kΩ (2.1)kΩ 6.8 (18.4)kΩ

3.1 15.8k (99.8)kΩ (32.7)kΩ (3.7)Ω 6.9 (20.5)kΩ

3.2 12.9k (224.0)kΩ (46.9)kΩ (5.5)kΩ 7.0 (22.7)kΩ

3.3 10.6k (70.6)kΩ (7.4)kΩ 7.1 (25.2)kΩ

3.4 8.9k 139.0k (118.0)kΩ (9.7)kΩ 7.2 (27.9)kΩ

3.5 7.5k 63.5k (260.0)kΩ (12.2)kΩ 7.3 (31.0)kΩ

3.6 6.4k 38.3k (15.1)kΩ 7.4 (34.4)kΩ

3.7 5.4k 25.7k 139.0k (18.4)kΩ 7.5 (38.3)kΩ

3.8 18.2k 63.5k (22.3)kΩ 7.6 (42.8)kΩ

3.9 13.1k 38.3k (26.9)kΩ 7.8 (53.9)kΩ

4.0 9.5k 25.7k (32.5)kΩ 8.0 (69.6)kΩ

4.1 6.8k 18.2k (39.2)kΩ 8.2 (93.0)kΩ

4.2 4.7k 13.1k (47.6)kΩ 8.4 (132.0)kΩ

4.3 3.0k 9.5k (58.5)kΩ 8.6 (210.0)kΩ

4.4 1.7k 6.8k (73.0)kΩ 8.8 (445.0)kΩ

4.5 0.5k 4.7k (93.2)kΩ 9.0

4.6 3.0k (124.0)kΩ 9.2 63.5k

4.7 1.7k (174.0)kΩ 9.4 25.7k

4.8 0.5k (275.0)kΩ 9.6 13.1k

4.9 (579.0)kΩ 9.8 6.8k

5.0 10.0 3.0k

5.1 190.0k

R1 = (Red) R2 = Black

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