Page 1
General features
■ Very low Collector to Emitter saturation voltage
■ D.C. Current gain, h
■ 1.5 A continuous collector current
■ In compliance with the 2002/93/EC European
Directive
FE
>100
2STX2220
High Gain Low Voltage
PNP Power Transistor
Description
The device in a PNP transistor manufactured
using new “PB-HDC” (Power Bipolar High Density
Current) technology. The resulting transistor
shows exceptional high gain performances
coupled with very low saturation voltage.
Applications
■ Power management in portable equipment
■ Switching regulator in battery charger
applications
Order codes
TO-92
Internal schematic diagram
Part Number Marking Package Packing
2STX2220 X2220 TO-92 Bulk
September 2006 Rev 2 1/11
www.st.com
11
Page 2
2STX2220
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
Page 3
2STX2220 Electrical ratings
1 Electrical ratings
Table 1. 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 0.9 W
amb
Table 2. Thermal data
Symbol Parameter Value Unit
R
thj-case
R
thj-amb
Thermal resistance junction-case __max
Thermal resistance junction-amb __max
44.6
139
°C/W
°C/W
3/11
Page 4
Electrical characteristics 2STX2220
2 Electrical characteristics
(T
= 25°C unless otherwise specified)
case
Table 3. 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
Page 5
2STX2220 Electrical characteristics
2.1 Electrical characteristics (curves)
Figure 1. Output characteristics Figure 2. DC current gain
Figure 3. DC current gain Figure 4. Collector-emitter saturation
voltage
Figure 5. Base-emitter saturation
voltage
Figure 6. Base-emitter on voltage
5/11
Page 6
Electrical characteristics 2STX2220
Figure 7. Capacitance curves Figure 8. Switching time resistive load
Figure 9. Switching time resistive load
6/11
Page 7
2STX2220 Electrical characteristics
2.2 Test circuits
Figure 10. Resistive load switching test circuit
1) Fast electronic switch
2) Non-inductive resistor
7/11
Page 8
Package mechanical data 2STX2220
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
8/11
Page 9
2STX2220 Package mechanical data
TO-92 BULK SHIPMENT MECHANICAL DATA
DIM.
MIN. TYP MAX.
A 4.32 4.95
b 0.36 0.51
D 4.45 4.95
E 3.30 3.94
e 2.41 2.67
e1 1.14 1.40
L 12.70 15.49
R 2.16 2.41
S1 0.92 1.52
W 0.41 0.56
V5
mm.
O
0102782 C
9/11
Page 10
Revision history 2STX2220
4 Revision history
Table 4. Revision history
Date Revision Changes
19-Jun-2006 1 Initial release.
25-Sep-2006 2 New maturity code.
10/11
Page 11
2STX2220
y
y
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