NSI45025ZT1G ON Semiconductor, NSI45025ZT1G Datasheet - Page 4

• Manufacturer Part Number: NSI45025ZT1G
• Description: IC CCR/LED DVR 45V 25MA SOT223-4
• Manufacturer: ON Semiconductor
• Type: Linear (Non-Switching)r

Specifications of NSI45025ZT1G

• Constant Current: Yes
• Topology: High Side, Linear, Low Side
• Number Of Outputs: 1
• Type - Primary: Automotive, Backlight
• Voltage - Supply: 45V
• Mounting Type: Surface Mount
• Package / Case: SOT-223 (3 leads + Tab), SC-73, TO-261
• Operating Temperature: -55°C ~ 150°C
• Current - Output / Channel: 25mA
• Internal Switch(s): No
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Frequency: -
• Efficiency: -
• Lead Free Status / Rohs Status: Details

APPLICATIONS
+
−
Number of LED’s that can be connected is determined by:
D1 is a reverse battery protection diode
LED’s = ((V
Example: V
LED V
(12 Vdc − 4.2 Vdc)/2.2 Vdc = 3 LEDs in series.
V
in
D1
Cathode
F
Anode
Figure 7. Typical Application Circuit
= 2.2 Vdc @ 25 mA
in
in
− Q
(25 mA each LED String)
= 12 Vdc, Q
X
V
HF3−R5570
HF3−R5570
HF3−R5570
Q1
LED
LED
LED
F
+ D1 V
X
V
F
F
)/LED V
= 3.5 Vdc, D1VF = 0.7 V
HF3−R5570
HF3−R5570
HF3−R5570
Q2
LED
LED
LED
F
)
HF3−R5570
HF3−R5570
HF3−R5570
Qx
LED
LED
LED
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4
Number of LED’s that can be connected is determined by:
D1 is a reverse battery protection diode
Example: V
LED V
(12 Vdc − (3.5 + 0.7 Vdc))/2.6 Vdc = 3 LEDs in series.
Number of Drivers = LED current/25 mA
75 mA/25 mA = 3 Drivers (Q1, Q2, Q3)
+
−
V
F
Figure 8. Typical Application Circuit
in
= 2.6 Vdc @ 75 mA
D1
Cathode
in
Anode
(75 mA each LED String)
= 12 Vdc, Q
HF3−R5570
HF3−R5570
HF3−R5570
LED
LED
LED
X
Q1
V
F
= 3.5 Vdc, D1VF = 0.7 V
Q2
Qx