Datasheet stn790a Datasheet

Medium current, high performance, low voltage PNP transistor

Features

■ Very low collector to emitter saturation voltage

■ DC current gain, h

■ 3 A continuous collector current

■ 40 V breakdown voltage V

SOT-223 plastic package for surface mounting

■

circuits in tape and reel packing

Applications

■ Power management in portable equipment

■ Voltage regulation in bias supply circuits

■ Switching regulator in battery charger

applications

■ Heavy load driver

FE

>100

(BR)CER

STN790A

4

3

2

1

SOT-223

Figure 1. Internal schematic diagram

Description

The device in manufactured in low voltage PNP planar technology by using a “Base Island” layout. The resulting transistor shows exceptional high gain performance coupled with very low saturation voltage.

Table 1. Device summary

Order code Marking Package Packaging

STN790A N790A SOT-223 Tape and reel

June 2008 Rev 4 1/9

www.st.com

9

Electrical ratings STN790A

1 Electrical ratings

Table 2. Absolute maximum rating

Symbol Parameter Value Unit

V

I

P

T

Table 3. Thermal data

Collector-base voltage (IE = 0) -40 V

CBO

Collector-emitter voltage (R

CER

Collector-emitter voltage (IB = 0) -30 V

CEO

Emitter-base voltage (IC = 0) -5 V

EBO

I

Collector current -3 A

C

Collector peak current (tP < 5 ms) -6 A

CM

Total dissipation at T

tot

Storage temperature -65 to 150 °C

stg

T

Max. operating junction temperature 150 °C

J

amb

BE

= 47 Ω)

-40 V

= 25 °C 1.6 W

Symbol Parameter Value Unit

R

thj-amb

1. Device mounted on PCB area of 1 cm2.

Thermal resistance junction-ambient

(1)

__max

78 °C/W

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STN790A Electrical characteristics

2 Electrical characteristics

(T

= 25 °C unless otherwise specified)

case

Table 4. Electrical characteristics

Symbol Parameter Test conditions Min. Typ. Max. Unit

= -30 V

I

CBO

I

EBO

V

(BR)CEO

V

(BR)CER

V

(BR)CBO

V

(BR)EBO

V

CE(sat)

V

BE(sat)

V

BE(on)

h

FE

Collector cut-off current

= 0)

(I

E

Emitter cut-off current

= 0)

(I

C

Collector-emitter

(1)

breakdown voltage (I

= 0)

B

Collector-emitter

(1)

breakdown voltage (R

= 47 Ω)

BE

Collector-base breakdown voltage

(I

= 0)

E

Emitter-base breakdown voltage (I

Collector-emitter

(1)

C

saturation voltage

Base-emitter saturation

(1)

voltage

(1)

Base-emitter on voltage

(1)

DC current gain

= 0)

V

CB

= -30 V; TC = 100 °C

V

CB

= -4 V

V

EB

I

= -10 mA

C

= -10 mA

I

C

= -100 µA

I

C

= -100 µA

I

E

I

= -0.5 A IB = -5 mA

C

= -1.2 A IB = -20 mA

I

C

I

= -2 A IB = -20 mA

C

= -3 A IB = -100 mA

I

C

I

= -3 A IB = -100 mA

C

= 100 °C

T

J

I

= -1 A IB = -10 mA

C

= -1 A V

I

C

= -10 mA V

I

C

I

= -500 mA V

C

I

= -1 A V

C

I

= -2 A V

C

I

= -3 A V

C

CE

= -2 V

= -1 V

-10

-100µAµA

-10 µA

-30 V

-40 V

-5 V

-0.15

-0.25

-0.5

-0.7

-0.9

-0.8 -1 V

100

200

400

100

90

160

130

V

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Electrical characteristics STN790A

Table 4. Electrical characteristics (continued)

Symbol Parameter Test conditions Min. Typ. Max. Unit

= -50 mA V

I

f

t

Transition frequency

C

f = 50 MHz

Resistive load

t

d

t

r

t

s

t

f

1. Pulse duration = 300 µs, duty cycle ≤ 1.5%

Delay time

Rise time

Storage time

Fall time

= -3 A V

I

C

= -I

I

B1

= -60 mA

B2

see Figure 8

2.1 Electrical characteristics (curves)

Figure 2. DC current gain Figure 3. DC current gain

CE

CC

= -5 V

= -20 V

100 MHz

180

160

250

80

220

210

300

100

ns

Figure 4. Collector-emitter saturation

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voltage

Figure 5. Base-emitter saturation

voltage

STN790A Electrical characteristics

Figure 6. Switching time resistive load Figure 7. Switching time resistive load

2.2 Test circuit

Figure 8. Resistive load switching test circuit

1) Fast electronic switch

2) Non-inductive resistor

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Package mechanical data STN790A

3 Package mechanical data

In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a Lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK is an ST trademark. ECOPACK specifications are available at: www.st.com

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STN790A Package mechanical data

DIM.

mm.

min. typ max.

A 1.80

A1 0.02 0.1

B 0.60 0.70 0.85

B1 2.90 3.00 3 .15

c 0.24 0.26 0.35

D6.30 6.50 6.70

e2.30

e1 4.60

E 3.30 3.50 3.70

H 6.70 7.00 7.30

V 10

o

SOT-223 mechanical data

0046067_L

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Revision history STN790A

4 Revision history

Table 5. Document revision history

Date Revision Changes

24-Mar-2006 3 Updated to new template

26-Jun-2008 4 Updated SOT-223 mechanical data.

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STN790A

y

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