TB62757FUG Toshiba, TB62757FUG Datasheet - Page 4

• 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) (#): -

Application Note
Protection in LED Opened Condition
The operation with OVD terminal is available for the protection in case LED Circuit opened.
If load of LED is detached, N-ch MOS switching operation is disabled with detection of boost circuit voltage.
(* When the voltage value recovers below the detection voltage value, operation is restarted.)
V
IN
SHDN
PWM
V
IN
3
1
4.7 to 10 μ H
Over voltage
multivibrator
Monostable
reference
detection
Circuit
on/off
for
off time control
multivibrator
Monostable
(OVD Function)
for
4
SW
4
AMP.
AMP.
Error
CTL
5
GND
2
6
OVD
FB
TB62757FUG
2010-06-306