NXP Semiconductors
PSSI2021SAY
Constant current source in SOT353 package
102
Iout
(mA)
10
006aaa020
(1)
(2)
1
(3)
10−1
(4)
(5)
10−2
10
(6)
102
103
104
RL (Ω)
VS = 12 V
(1) Iout = 20 mA
(2) Iout = 10 mA
(3) Iout = 1mA
(4) Iout = 100 µA
(5) Iout = 50 µA
(6) Iout = 15 µA
Fig 1. Output current as a function of load
resistance; typical values
102
Iout
(mA)
10
006aaa022
1
10−1
10−2
10
102
103
104
105
106
Rext (Ω)
Fig 3.
VS = 12 V; RL = 100 Ω
Output current as a function of external
resistance; typical values
102
Iout
(mA)
10
006aaa021
(1)
(2)
(3)
1
10−1
(4)
(5)
10−2
0
(6)
20
40
60
80
VS (V)
(1) Iout = 20 mA
(2) Iout = 10 mA
(3) Iout = 1mA
(4) Iout = 100 µA
(5) Iout = 50 µA
(6) Iout = 15 µA
Fig 2. Output current as a function of supply voltage;
typical values
2.0
IS
(mA)
1.5
006aaa023
1.0
0.5
0
0
20
40
60
80
VS (V)
Fig 4.
Rext = ∞; RL = 100 Ω
Supply current as a function of supply voltage;
typical values
PSSI2021SAY_3
Product data sheet
Rev. 03 — 27 August 2009
© NXP B.V. 2009. All rights reserved.
4 of 12