IS31LT3170/71
Integrated Silicon Solution, Inc. – www.issi.com 10
Rev. B, 07/05/2016
IS31LT3171
Output Voltage (V)
Output Current (mA)
0
5
10
15
20
25
30
0.523.556.589.51112.514
V
EN
= 3.3V
R
EXT
Open
T
A
= -40°C
T
A
= 125°C
T
A
= 25°C
T
A
= 85°C
Figure 15
I
OUT
vs. V
OUT
Output Voltage (V)
Output Current (mA)
0.5 2 3.5 5 6.5 8 9.5 11 12.5 14
0
50
100
150
V
EN
= 3.3V
R
EXT
= 10
T
A
= 125°C
T
A
= 85°C
T
A
= 25°C
T
A
= -40°C
Figure 17
I
OUT
vs. V
OUT
Output Voltage (V)
Output Current (mA)
0
20
40
60
80
100
120
140
160
180
200
02468101214
VEN = 5V
f
PWM = 100Hz@1% Duty Cycle
T
A = 25°C
REXT = 7.5
REXT = 10
REXT= 20
REXT Open
Figure 19
I
OUT
vs. V
OUT
Output Voltage (V)
Output Current (mA)
0.5 2 3.5 5 6.5 8 9.5 11 12.5 14
0
20
40
60
80
V
EN
= 3.3V
R
EXT
= 20
T
A
= 125°C
T
A
= 85°C
T
A
= -40°C
T
A
= 25°C
Figure 16
I
OUT
vs. V
OUT
Output Voltage (V)
Output Current (mA)
0.5 2 3.5 5 6.5 8 9.5 11 12.5 14
0
20
40
60
80
100
120
140
160
180
V
EN
= 3.3V
R
EXT
= 7.5
T
A
= -40°C
T
A
= 25°C
T
A
= 125°C
T
A
= 85°C
Figure 18
I
OUT
vs. V
OUT
Output Voltage (V)
Output Current (mA)
0
20
40
60
80
100
120
140
160
180
200
02468101214
VEN = 3.3V
T
A = 25°C
REXT = 7.5
REXT = 10
REXT = 20
REXT Open
Figure 20
I
OUT
vs. V
OUT
IS31LT3170/71
Integrated Silicon Solution, Inc. – www.issi.com 11
Rev. B, 07/05/2016
V
EN
(V)
Output Current (mA)
0
4
8
12
16
20
2.5 3 3.5 4 4.5 5
V
OUT
= 2V
R
EXT
Open
T
A
= -40°C
T
A
= 125°C
T
A
= 85°C
T
A
= 25°C
Figure 21
I
OUT
vs. V
EN
V
EN
(V)
Output Current (mA)
0
30
60
90
120
150
V
OUT
= 2V
R
EXT
= 10
T
A
= 125°C
T
A
= -40°C
T
A
= 25°C
T
A
= 85°C
2.5 3 3.5 4 4.5 5
Figure 23
I
OUT
vs. V
EN
V
EN
(V)
Output Current (mA)
0
20
40
60
80
100
120
140
160
180
2.5 3 3.5 4 4.5 5
R
EXT
= 7.5
R
EXT
= 10
R
EXT
= 20
R
EXT
Open
V
OUT
= 2V
T
A
= 25°C
Figure 25
I
OUT
vs. V
EN
V
EN
(V)
Output Current (mA)
0
20
40
60
80
2.5 3 3.5 4 4.5 5
V
OUT
= 2V
R
EXT
= 20
T
A
= -40°C
T
A
= 125°C
T
A
= 25°C
T
A
= 85°C
Figure 22
I
OUT
vs. V
EN
V
EN
(V)
Output Current (mA)
0
25
50
75
100
125
150
175
200
V
OUT
= 2V
R
EXT
= 7.5
2.5 3 3.5 4 4.5 5
T
A
= 125°C
T
A
= 85°C
T
A
= 25°C
T
A
= -40°C
Figure 24
I
OUT
vs. V
EN
V
EN
(V)
Supply Current (µA)
0
100
200
300
400
500
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5
I
OUT
= 0A
R
EXT
Open
T
A
= 125°C
T
A
= 85°C
T
A
= -40°C
T
A
= 25°C
Figure 26
I
EN
vs. V
EN
IS31LT3170/71
Integrated Silicon Solution, Inc. – www.issi.com 12
Rev. B, 07/05/2016
R
EXT
()
Output Current (mA)
0
50
100
150
200
250
110100
V
EN
= 3.3V
V
OUT
= 2V
Figure 27 I
OUT
vs. R
EXT
Time (200ns/Div)
I
OUT
50mA/Div
V
EN
2V/Div
VOUT = 3V, 3 LEDs
V
EN = 5V, 100Hz, 50% Duty Cycle
R
EXT = 10
T
J = 25°C
Figure 29 V
EN
vs. I
OUT
Delay and Rising Edge
Time (100ns/Div)
I
OUT
50mA/Div
V
EN
2V/Div
V
OUT
= 3V, 3 LEDs
V
EN
= 5V, 100Hz, 50% Duty Cycle
R
EXT
= 10
T
J
= -40°C
Figure 31 V
EN
vs. I
OUT
Delay and Falling Edge
Time (200ns/Div)
I
OUT
50mA/Div
V
EN
2V/Div
V
OUT
= 3V, 3 LEDs
V
EN
= 5V, 100Hz, 50% Duty Cycle
R
EXT
= 10
T
J
= -40°C
Figure 28 V
EN
vs. I
OUT
Delay and Rising Edge
Time (200ns/Div)
I
OUT
50mA/Div
V
EN
2V/Div
V
OUT
= 3V, 3 LEDs
V
EN
= 5V, 100Hz, 50% Duty Cycle
R
EXT
= 10
T
J
= 125°C
Figure 30 V
EN
vs. I
OUT
Delay and Rising Edge
Time (100ns/Div)
I
OUT
50mA/Div
V
EN
2V/Div
V
OUT
= 3V, 3 LEDs
V
EN
= 5V, 100Hz, 50% Duty Cycle
R
EXT
= 10
T
J
= 25°C
Figure 32 V
EN
vs. I
OUT
Delay and Falling Edge

IS31LT3170-STLS4-TR

Mfr. #:
Manufacturer:
ISSI
Description:
LED Lighting Drivers 150mA Constant Current Regulator (CCR)
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
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