TB62737FUG Toshiba, TB62737FUG Datasheet - Page 11

• Manufacturer Part Number: TB62737FUG
• Manufacturer: Toshiba

Specifications of TB62737FUG

• 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: Analog dimming
• Rohs Compatible Product(s) (#): -

5) Input Logic signal
OFF
OFF
ON
ON
M1
I
The resistor connected the ON-State Nch MOS Drain and RSENS determines I
Average of setting current Io (mA) is next, approximately.
<Recommended application>
F
can be adjusted with Logic signal input as indicated in recommended circuit.
I
F
= (325 [mV]/Sum of resistor value [ Ω ])
OFF
OFF
ON
ON
M2
2.8 to 5.5 V
V
IN
=
325
[
mV
SHDN
]
V
×
IN
GND
R
6.8 μH
SENS
325
325
11
OVD
[
SW
[
[
Ω
mV
mV
FB
]
×
S-Di
M1
]
]
LED Current
R
Logic signal
×
×
RSENS
[ 1
325
R SENS
R SENS
R SENS
R SENS
R
Ω
SENS
]
[mV]
+
R
R1
[
Ω
[
SENS
[
Ω
[
[
[
Ω
Ω
]
Ω
Ω
]
]
]
]
]
×
+
×
+
×
R
R2
M2
R
R
[
R
R
Ω
[ 1
[ 2
[ 1
[ 2
[ 1
]
Ω
×
Ω
Ω
Ω
Ω
]
R
×
]
]
]
]
F
2
R
.
[
2
Ω
[
]
Ω
+
]
R
[ 1
Ω
]
×
TB62737FUG
R
2
[
Ω
]
2010-07-01