TB62757FUG Toshiba, TB62757FUG Datasheet - Page 9

• Manufacturer Part Number: TB62757FUG
• Manufacturer: Toshiba

Specifications of TB62757FUG

• Package: SOT23-6
• Supply Voltage: 2.8V to 5.5V
• # Leds Supported: 2 to 6 LEDs in series
• Sw Frequency: 1.1MHz
• Led Current Accuracy: ±5.23% (max)
• Protection Feature: Output overvoltage protection
• Other Features & Functions: -
• Rohs Compatible Product(s) (#): -

2) Input analog voltage to FB terminal
I
This method is without repeating IC ON/OFF, and no need to consider holding rash current.
[Notice]
F
can be adjusted with analog voltage input to FB terminal.
•
<<Recommended circuit>>
LED current value goes over 100% of the current set with R
between 0 V to 325 mV (typ.).
for ref.) Analog voltage = 0 to 2.2 V
Supply Voltage [V]
No connect (OFF)
0.2
0.4
0.6
0.8
1.2
1.4
1.6
1.8
2.2
About external parts value, please see recommended circuit.
0
1
2
2.8 to 5.5 V
V
IN
=
Setting Current
Ratio with
116.0%
106.5%
95.4%
84.5%
73.6%
59.9%
48.4%
37.4%
26.6%
15.9%
100%
5.8%
0.0%
SHDN
V
CC
GND
6.8 μ H
9
OVD
SW
FB
Analog voltage
S-Di
140.0%
120.0%
100.0%
80.0%
60.0%
40.0%
20.0%
0.0%
16 k Ω
0
SENS
0.5
, if the input analog voltage is
Analog Voltage Input to FB Terminal
TB62757FUG
TB62737FUG
1
Input Voltage
TB62757FUG
1.5
2010-06-306
2
2.5