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High gain Low Voltage PNP power transistor
Features
■ Very low Collector to Emitter saturation voltage
■ D.C. Current gain, h
■ 1.5 A continuous collector current
Applications
■ Power management in portable equipment
■ Switching regulator in battery charger
applications
Description
FE
>100
2STF2220
SOT-89
The device in a PNP transistor manufactured
using new “PB-HDC” (Power Bipolar High Density
Figure 1. Internal schematic diagram
Current) technology. The resulting transistor
shows exceptional high gain performances
coupled with very low saturation voltage.
Table 1. Device summary
Order code Marking Package Packaging
2STF2220 2220 SOT-89 Tape & reel
September 2007 Rev 3 1/11
www.st.com
11
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2STF2220
Contents
1 Electrical ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Electrical characteristics (curves) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2.2 Test circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2/11
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2STF2220 Electrical ratings
1 Electrical ratings
Table 2. Absolute maximum rating
Symbol Parameter Value Unit
V
V
V
I
I
P
T
Collector-base voltage (IE = 0) -20 V
CBO
Collector-emitter voltage (IB = 0) -20 V
CEO
Emitter-base voltage (IC = 0) -5 V
EBO
I
Collector current -1.5 A
C
Collector peak current (tP < 5ms) -3 A
CM
I
Base current -0.1 A
B
Base peak current (tP < 5ms) -0.2 A
BM
Total dissipation at T
tot
Storage temperature -65 to 150 °C
stg
T
Max. operating junction temperature 150 °C
J
= 25°C 1.4 W
amb
Table 3. Thermal data
Symbol Parameter Value Unit
(1)
R
thj-amb
(1) Device mounted on PCB area of 1cm
Thermal resistance junction-amb __max 89 °C/W
2
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Electrical characteristics 2STF2220
2 Electrical characteristics
(T
= 25°C unless otherwise specified)
case
Table 4. Electrical characteristics
Symbol Parameter Test Conditions Min. Typ. Max. Unit
I
CBO
I
EBO
V
(BR)CEO
V
(BR)EBO
V
CE(sat)
V
BE(sat)
V
BE(on)
h
FE
C
CBO
Collector cut-off current
=0)
(I
E
Emitter cut-off current
=0)
(I
C
Collector-emitter
(2)
breakdown voltage
(I
= 0)
B
Emitter-base breakdown
voltage (I
(2)
Collector-emitter
C
saturation voltage
Base-emitter saturation
(2)
voltage
(2)
Base-emitter on voltage
(2)
DC current gain
Collector-base
capacitance
= 0)
= -20V
V
CB
= -5V
V
EB
I
= -10mA
C
= -100µA
I
E
I
= -0.5A IB = -50mA
C
= -1.5A IB = -150mA
I
C
= -0.5A IB = -50mA
I
C
= -1.5A IB = -150mA
I
C
= -1A V
I
C
I
= -100mA V
C
I
= -500mA V
C
I
= -1.5A V
C
= -3A V
I
C
I
= 0 V
E
CB
CE
CE
CE
CE
CE
= -10V
f = 1MHz
= -2V
= -2V
= -2V
= -2V
= -2V
-0.1 µA
-0.1 µA
-20 V
-5 V
-0.25
-0.45VV
-1
-1.1
-1 V
200
600
170
120
75
30 pF
V
V
Resistive load
t
on
t
off
Turn-on time
Turn-off time
I
I
Note (2) Pulsed duration = 300 µs, duty cycle ≤1.5%
4/11
= -1.5A V
C
= -I
B1
B2
CC
= -150mA
= -10V
60
250
ns
ns
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2STF2220 Electrical characteristics
2.1 Electrical characteristics (curves)
Figure 2. Output characteristics Figure 3. Derating curve
Figure 4. DC current gain Figure 5. DC current gain
Figure 6. Collector-emitter saturation
voltage
Figure 7. Base-emitter saturation
voltage
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Electrical characteristics 2STF2220
Figure 8. Base-emitter on voltage Figure 9. Capacitance curves
Figure 10. Switching time resistive load Figure 11. Switching time resistive load
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2STF2220 Electrical characteristics
2.2 Test circuits
Figure 12. Resistive load switching test circuit
1) Fast electronic switch
2) Non-inductive resistor
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Package mechanical data 2STF2220
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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2STF2220 Package mechanical data
SOT-89 MECHANICAL DATA
DIM.
MIN. TYP. MAX. MIN. TYP. MAX.
A 1.4 1.6 55.1 63.0
B 0.44 0.56 17.3 22.0
B1 0.36 0.48 14.2 18.9
C 0.35 0.44 13.8 17.3
C1 0.35 0.44 13.8 17.3
D 4.4 4.6 173.2 181.1
D1 1.62 1.83 63.8 72.0
E 2.29 2.6 90.2 102.4
e 1.42 1.57 55.9 61.8
e1 2.92 3.07 115.0 120.9
H 3.94 4.25 155.1 167.3
L 0.89 1.2 35.0 47.2
mm mils
P025H
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Revision history 2STF2220
4 Revision history
Table 5. Document revision history
Date Revision Changes
19-Jun-2006 1 Initial release.
27-Sep-2006 2 New maturity code.
18-Sep-2007 3 Added Figure 3.
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2STF2220
y
y
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