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參數資料
| 型號： | 934056564115 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 模擬信號調理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PDSO5 |
| 封裝： | PLASTIC, SC-88A, SOT-353, SMT-5 |
| 文件頁數： | 2/8頁 |
| 文件大小： | 45K |
| 代理商： | 934056564115 |
2001 May 07
2
Philips Semiconductors
Product specication
Constant current source
PSSI2021SAY
FEATURES
One chip constant current source
Reduced number of components and board space.
APPLICATIONS
Especially suitable for space reduction in, for example,
LED driving circuits or active bias controlling.
DESCRIPTION
Resistor equipped PNP transistor with two diodes on one
chip in a plastic SC-88A package. Built-in bias resistor and
two diodes allow operation as constant current source.
The stabilized current can be adjusted between 15
A and
50 mA by connection of external resistors between
pins 4 and 5.
MARKING
TYPE NUMBER
MARKING CODE
PSSI2021SAY
S1p
PINNING
PIN
SYMBOL
DESCRIPTION
1
n.c.
not connected
2Istab/Vout
stabilized current/output voltage
3
GND
ground
4Rexternal
external resistor
5VS
supply voltage
handbook, halfpage
MGU348
1
3
54
n.c.
3
2
1
5
4
2
Top view
Fig.1 Simplified outline (SC-88A) and symbol.
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 60134).
Note
1. Device mounted on a FR4 printed-circuit board.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
VS
supply voltage
75
V
Vout
output voltage
VS =75V
73
V
VR
reverse voltage
between all terminals
0.5
V
Istab
continuous stabilized current (DC)
50
mA
Ptot
total power dissipation
Tamb ≤ 25 °C; note 1
335
mW
Tstg
storage temperature
65
+150
°C
Tj
junction temperature
150
°C
Tamb
operating ambient temperature
65
+150
°C
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