TB62737FUG(O,EL) Toshiba, TB62737FUG(O,EL) Datasheet

IC LED DRIVR WHITE BCKLGT 6-SSOP

TB62737FUG(O,EL)

Manufacturer Part Number
TB62737FUG(O,EL)
Description
IC LED DRIVR WHITE BCKLGT 6-SSOP
Manufacturer
Toshiba
Type
Backlight, White LEDr
Datasheet

Specifications of TB62737FUG(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%
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Voltage - Output
-
Other names
TB62737FUGTR
Step-up Type DC/DC Converter for White LED
specially designed for constant current driving of White LED.
battery.
LED Current (I
PDA, Cellular Phone, or Handy Terminal Equipment.
Lead(Pb)-Free product.
Features
The TB62737FUG is a high efficient step-up type DC/DC converter
This IC can drive 2-6 white LEDs connected series using a Li-ion
This IC contains N-ch MOS-FET Transistor for Coil-Switching, and
This IC is especially for driving back light white LEDs in LCD of
The suffix (G) appended to the part number represents a
Brightness control function with changing drive current:
Can drive 2-6 white LEDs connected series
Built-in over voltage detection circuit:
Variable LED current I
Output power: Available for 400 mW LED loading
High efficiency: 87% @maximum (using recommended external parts)
IC package: SSOP6-P-0.95B
Switching frequency: 1.1 MHz (typ.)
LED current I
For the control in range of 25% or less, refer 6-page.
20 mA (typ.) @R
F
) is set with an external resistor.
Protection Voltage: OVD pin =22V (TYP.)
F
= 25% to 100% (analog input)
SENS
TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic
F
is set with a external resistor:
= 16 Ω
TB62737FUG
1
Weight: 0.016 g (typ.)
TB62737FUG
2006-06-14

Related parts for TB62737FUG(O,EL)

TB62737FUG(O,EL) Summary of contents

Page 1

... TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic TB62737FUG Step-up Type DC/DC Converter for White LED The TB62737FUG is a high efficient step-up type DC/DC converter specially designed for constant current driving of White LED. This IC can drive 2-6 white LEDs connected series using a Li-ion battery ...

Page 2

Block Diagram Over voltage detection Reference mono multi Level detect SHDN 1 Pin Assignment (top view) Note: This IC could be destroyed in some case if amounted in 180° inverse direction. Please be careful about IC direction ...

Page 3

I/O Equivalent Pin Circuits 1. SHDN Terminal SHDN Terminal to GND Terminal GND Terminal OVD Terminal 1 ...

Page 4

Setting of External Capacitor In case not using PWM signal to SHDN terminal for brightness control, recommended values are = Over 2.2 (µF Over 1.0 (µ case with PWM signal to SHDN terminal for ...

Page 5

Current Dimming Control Recommended Brightness Control Circuits are 5 types. 1) Input analog voltage to SHDN terminal I can be adjusted in range of 25% to 100% after set with external resistor connected RSENS terminal. F Linearity error in V-A ...

Page 6

Input PWM signal to SHDN terminal can be adjusted with PWM signal by inputting it to SHDN terminal [Notice] <<Minimum ON-time of PWM signal input>> • Set the minimum ON-time or OFF-time 33 µs or more in ...

Page 7

Data> 6.8 µ H, 4LEDs, RSENS = 16 m Ω @ Condition 4.7 µ 0.1 µ TB62737FUG ON Duty width[%] ...

Page 8

V IN 2.8 to 5.5 V PWM signal 6.8 µ SHDN OVD FB GND 8 TB62737FUG 2006-06-14 ...

Page 9

Input analog voltage to FB terminal I can be adjusted with Analog voltage input to FB terminal. F This method is without repeating IC ON/OFF, and no need to consider holding rash current. [Notice] • LED current value goes ...

Page 10

Input PWM signal with filtering to FB terminal I can be adjusted with filtering PWM signal using RC filter indicated in recommended circuit, because the PWM F signal can be regard as analog voltage after filtering. This method is ...

Page 11

Input Logic signal I can be adjusted with Logic signal input as indicated in recommended circuit. F The resistor connected the ON-State Nch MOS Drain and RSENS determines I Average of setting current Io (mA) is next, approximately. = ...

Page 12

Absolute Maximum Ratings Characteristics Power supply voltage Input voltage Switching terminal voltage Power dissipation Thermal resistance Operation temperature range Storage temperature range Maximum junction temperature Note: Power Dissipation must be calculated with subtraction of 3.8 mW/°C from Absolute Maximum Rating ...

Page 13

... L : CXLD120 series (NEO MAX CO.,Ltd.) 1 WLEDs (Size: 2.5 mm × 3.0 mm × 1.2 mm C2012JB1E225K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) RSENS : RK73B1ETBK (KOA Corp.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µH 35 100 IOUT ...

Page 14

... Evaluation conditions (Ta = 25° 1001AS series (TOKO, INC) 1 WLEDs (Size: 3.6 mm × 3.6 mm × 1.2 mm C2012JB1E225K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) RSENS : RK73B1ETBK (KOA Corp.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µH 35 100 IOUT ...

Page 15

... S-Di • Evaluation conditions (Ta = 25° LQH2M series 1 WLEDs C2012JB1E105K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) RSENS : RK73B1ETBK (KOA Corp.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µH 35 100 IOUT 60 ...

Page 16

... S-Di • Evaluation conditions (Ta = 25° VLF3010A series (TDK Corp.) 1 WLEDs C2012JB1E225K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) RSENS : RK73B1ETBK (KOA Corp.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µH 35 100 IOUT ...

Page 17

... S-Di • Evaluation conditions (Ta = 25° 32R51 (KOA Corp.) 1 WLEDs C2012JB1E225K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) RSENS : RK73B1ETBK (KOA Corp.) Input Voltage - Efficiency/Output Current 100 Iout 60 ...

Page 18

Package Dimensions Weight: 0.016 g (typ.) 18 TB62737FUG 2006-06-14 ...

Page 19

... Application Circuits The application circuits shown in this document are provided for reference purposes only. Thorough evaluation is required, especially at the mass production design stage. Toshiba does not grant any license to any industrial property rights by providing these examples of application circuits. 5. Test Circuits Components in the test circuits are used only to obtain and confirm the device characteristics. These components and circuits are not guaranteed to prevent malfunction or failure from occurring in the application equipment ...

Page 20

Carefully select external components (such as inputs and negative feedback capacitors) and load components (such as speakers), for example, power amp and regulator. If there is a large amount of leakage current such as input or negative feedback condenser, ...

Page 21

Points to Remember on Handling of ICs (1) Heat Radiation Design In using an IC with large current flow such as power amp, regulator or driver, please design the device so that heat is appropriately radiated, not to exceed the ...

Page 22

... The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA for any infringements of patents or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of TOSHIBA or others. ...

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