TB62757FUG Toshiba, TB62757FUG Datasheet - Page 2

• 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) (#): -

Block Diagram
Pin Assignment
Pin Function
Note 1: This IC could be destroyed in some case if amounted in 180° inverse direction.
Pin No.
1
2
3
4
5
6
Please be careful about IC direction in mounting.
SHDN
Symbol
SHDN
GND
OVD
V
V
SW
FB
IN
IN
3
1
(top view)
SHDN
OVD
Voltage-input terminal for IC-enable.
Please do not open this terminal.
Over voltage detection terminal.
IC switching operation is disabled with detection over voltage.
If the voltage returns to detection level or less, operation is enabled again.
Supply voltage input terminal. (2.8 V to 5.5 V)
Switch terminal for DC-DC converter. N-ch MOSFET built-in.
Ground terminal.
LED I
SHDN = H → Operation Mode, SHDN = L → Shutdown Mode (IC shutdown)
V
IN
Over voltage
multivibrator
Monostable
F
reference
detection
1
2
3
setting resister connecting terminal.
Circuit
on/off
for
Week 1 to 26
off time control
multivibrator
Monostable
6
5
4
SW
for
4
FB
GND
SW
2
Function Description
AMP.
AMP.
Error
CTL
SHDN
OVD
V
IN
OVD
2
GND
1
2
3
5
Week 27 to 53
6
FB
TB62757FUG
6
5
4
FB
GND
SW
2010-06-306