TB62736FUG(O,EL) Toshiba, TB62736FUG(O,EL) Datasheet - Page 4

• Manufacturer Part Number: TB62736FUG(O,EL)
• Description: IC LED DRIVR WHITE BCKLGT 6-SSOP
• Manufacturer: Toshiba
• Type: Backlight, White LEDr

Specifications of TB62736FUG(O,EL)

• Constant Current: Yes
• Topology: PWM, Step-Up (Boost)
• Number Of Outputs: 1
• Internal Driver: Yes
• Type - Primary: Backlight
• Type - Secondary: White LED
• Frequency: 770kHz ~ 1.43MHz
• Voltage - Supply: 2.8 V ~ 5.5 V
• Mounting Type: Surface Mount
• Package / Case: SC-74-6
• Operating Temperature: -40°C ~ 85°C
• Current - Output / Channel: 20mA
• Internal Switch(s): Yes
• Efficiency: 87%
• Number Of Segments: 6
• Operating Supply Voltage: 2.8 V to 5.5 V
• Maximum Power Dissipation: 470 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Voltage - Output: -
• Lead Free Status / Rohs Status: Details
• Other names: TB62736FUGTR

Application Circuit Example
Protection at the time of LED opening
when the LED becomes open. As the IC does not incorporate a voltage protection circuit, it is strongly advised that
a zener diode be connected.
current when the LED becomes open, and to use a zener diode of lower tolerance.
The zener diode in the application circuit example is necessary for the provision of over-voltage protection for
The zener diode should satisfy the following conditions:
Moreover, by connecting a protection circuit such as R_ZD in the figure below, it is possible to control the output
An example of IZD control by R_ZD connection. (RSENS = 16 Ω)
In order to avoid adverse effects on driver characteristics,
Toshiba recommends a resistance of 500 ohms or less.
i)
ii)
iii)
VIN
R_DZ (Ω)
Less than maximum output voltage of 24V
Greater than the total series LED V
Less than the maximum output capacitance C
2.2µF
500
100
1.0-2.5V
Analog
PWM
SHDN
VIN
3
1
IZD (mA)
Reference
Mono Multi
0.6
2.8
Level
Detect
4.7-10µH
CTL
AMP.
F
Off Time
Control
Mono Multi
4
SW
2
.
4
Error
AMP.
CTL
AMP.
GND
2
5
NC
Protection circuit application
GND FB
SW
6
FB
S-Di
Vz=24V
IZD
500Ω
TB62736FUG
RSENS
R_ZD
2006-06-14
16Ω
@20mA
IF
1µF
1 µF
C2