NCR402T
16 October 2015
20 mA LED driver in SOT23
Product data sheet
1. General description
LED driver consisting of a resistor-equipped PNP transistor with two diodes on one chip
in a small SOT23 plastic package.
2. Features and benefits
•
•
•
•
Stabilized output current of 20 mA
High currrent accuracy at supply voltage variation
Reduces component count and board space
Qualified according to AEC-Q101
3. Applications
•
•
•
Constant current LED driver
Generic constant current source
Automotive applications
4. Quick reference data
Table 1.
Symbol
I
O
V
SUP
Quick reference data
Parameter
output current
supply voltage
Conditions
V
SUP
= 10 V; V
O
= 8.6 V; T
amb
= 25 °C;
pulsed; t
p
≤ 300 µs; δ ≤ 0.02
-
-
18
V
Min
17
Typ
20
Max
23
Unit
mA
Nexperia
NCR402T
20 mA LED driver in SOT23
5. Pinning information
Table 2.
Pin
1
2
3
Pinning information
Symbol Description
GND
V
SUP
I
O
/V
O
ground
supply voltage
output current/output voltage
1
2
Simplified outline
3
Graphic symbol
V
SUP
TO-236AB (SOT23)
GND
I
O
/V
O
I
O
LED
aaa-019596
6. Ordering information
Table 3.
Ordering information
Package
Name
NCR402T
TO-236AB
Description
plastic surface-mounted package; 3 leads
Version
SOT23
Type number
7. Marking
Table 4.
NCR402T
Marking codes
Marking code
BF
Type number
NCR402T
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
16 October 2015
2 / 12
Nexperia
NCR402T
20 mA LED driver in SOT23
8. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
SUP
V
O
V
R
P
tot
T
j
T
amb
T
stg
Parameter
supply voltage
output voltage
reverse voltage
total power dissipation
junction temperature
ambient temperature
storage temperature
[1]
[2]
[3]
Conditions
V
SUP
= 18 V
[1]
Min
-
-
-
-
-
-
-55
-65
Max
18
16
0.5
270
400
150
150
150
Unit
V
V
V
mW
mW
°C
°C
°C
T
amb
≤ 25 °C
[2]
[3]
Between all terminals.
Device mounted on an FR4 Printed-Circuit Board (PCB); single-sided copper; tin-plated and standard
footprint.
Device mounted on an FR4 PCB; single-sided copper; tin-plated and mounting pad for output 1 cm .
500
mle128
2
P
tot
(mW)
400
(1)
300
(2)
200
100
0
0
40
2
80
120
160
T
amb
(°C)
(1) FR4 PCB mounting pad for collector 1 cm
(2) FR4 PCB, standard footprint
Fig. 1.
Power derating curves
NCR402T
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
16 October 2015
3 / 12
Nexperia
NCR402T
20 mA LED driver in SOT23
9. Thermal characteristics
Table 6.
Symbol
R
th(j-a)
Thermal characteristics
Parameter
thermal resistance
from junction to
ambient
[1]
[2]
10
3
Z
th
(K/W)
10
2
δ=1
0.75
0.5
0.33
0.2
0.1
0.05
10
0.02
0.01
Conditions
in free air
[1]
[2]
Min
-
-
Typ
-
-
Max
465
312
Unit
K/W
K/W
Device mounted on an FR4 PCB; single-sided copper; tin-plated and standard footprint.
Device mounted on an FR4 PCB; single-sided copper; tin-plated and mounting pad for collector 1 cm .
mle127
2
1
10
- 5
0
10
- 4
10
- 3
10
- 2
10
- 1
1
10
10
2
t
p
(s)
10
3
FR4 PCB, single sided copper, standard footprint
Fig. 2.
Transient thermal impedance as a function of pulse time; typical values
NCR402T
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
16 October 2015
4 / 12
Nexperia
NCR402T
20 mA LED driver in SOT23
10. Characteristics
Table 7.
Symbol
I
O
I
GND
V
(VSUP-VO)min
Characteristics
Parameter
output current
ground current
minimum voltage
between supply
voltage and output
voltage
relative output current
variation with ambient
temperature
relative output current
variation with supply
voltage
Conditions
V
SUP
= 10 V; V
O
= 8.6 V; T
amb
= 25 °C;
pulsed; t
p
≤ 300 µs; δ ≤ 0.02
V
SUP
= 10 V; I
O
= 0 A; T
amb
= 25 °C;
pulsed; t
p
≤ 300 µs; δ ≤ 0.02
I
O
> 17 mA; T
amb
= 25 °C; pulsed;
t
p
≤ 300 µs; δ ≤ 0.02
-
1.4
-
V
340
420
500
µA
Min
17
Typ
20
Max
23
Unit
mA
ΔI
O
/
(I
O
×ΔT
amb
)
ΔI
O
/
(I
O
×ΔV
SUP
)
V
SUP
= 10 V; V
O
= 8.6 V; T
amb
= 25 °C;
pulsed; t
p
≤ 300 µs; δ ≤ 0.02
V
SUP
= 10 V; V
SUP
- V
O
= 1.4 V;
T
amb
= 25 °C; pulsed; t
p
≤ 300 µs;
δ ≤ 0.02
aaa-019919
-
-0.3
-
%/K
-
0.8
-
%/V
30
I
O
(mA)
20
30
I
O
(mA)
20
aaa-019920
T
amb
= -40 °C
T
amb
= 25 °C
T
amb
= 85 °C
10
V
SUP
- V
O
= 2 V
V
SUP
- V
O
= 1.4 V
V
SUP
- V
O
= 1 V
10
0
0
5
10
15
V
SUP
(V)
20
0
0
5
10
15
V
SUP
(V)
20
T
amb
= 25 °C
Fig. 3.
Output current as a function of supply voltage;
typical values
Fig. 4.
V
SUP
- V
O
= 1.4 V
Output current as a function of supply voltage;
typical values
NCR402T
All information provided in this document is subject to legal disclaimers.
©
Nexperia B.V. 2017. All rights reserved
Product data sheet
16 October 2015
5 / 12
京公网安备 11010802033920号
EEWORLD
