TB62757FPG(O,EL) Toshiba, TB62757FPG(O,EL) Datasheet

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TB62757FPG(O,EL)

Manufacturer Part Number
TB62757FPG(O,EL)
Description
IC LED DRIVER WHITE BCKLGT 6-PLP
Manufacturer
Toshiba
Type
Backlight, White LEDr
Datasheet

Specifications of TB62757FPG(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
6-PLP
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
-
Lead Free Status / Rohs Status
 Details
Other names
TB62757FPGTR
Step Up Type DC/DC Converter for White LED
Converter specially designed for constant current driving of
White LED.
Li-ion battery.
and LED Current (I
of PDA, Cellular Phone, or Handy Terminal Equipment.
Features
The TB62757FUG is a high efficient Step-Up Type DC/DC
This IC can drive 2 to 6 white LEDs connected series using a
This IC contains N-ch MOS-FET Transistor for Coil-Switching,
This IC is especially for driving back light white LEDs in LCD
This device is Pb-free product.
Can drive 2 to 6 white LEDs connected series
Variable LED current I
Output power: Available for 400 mW LED loading
High efficiency: 87% @Maximum
Output over voltage shutdown function:
Switching operation is shut downed when OVD terminal voltage is over 22 V (typ.).
IC package: SSOP6-P-0.95
Switching frequency: 1.1 MHz (typ.)
F
) is set with an external resistor.
TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic
F
is set with a external resistor: 20 mA (typ.) @R
TB62757FUG
1
Weight: 0.016 g (typ.)
SENS
= 16 Ω
TB62757FUG
2006-02-206

Related parts for TB62757FPG(O,EL)

TB62757FPG(O,EL) Summary of contents

Page 1

... TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic Step Up Type DC/DC Converter for White LED The TB62757FUG is a high efficient Step-Up Type DC/DC Converter specially designed for constant current driving of White LED. This IC can drive white LEDs connected series using a Li-ion battery. ...

Page 2

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

Page 3

I/O Equivalent Pin Circuits 1. SHDN Terminal V IN SHDN Terminal to GND Terminal GND Terminal OVD Terminal OVD Terminal SW 4 ...

Page 4

Application Note 4 µ Over voltage 3 detection V IN Monostable multivibrator reference SHDN 1 PWM Protection in LED Opened Condition The operation with OVD terminal is available for the protection in case LED Circuit ...

Page 5

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

Page 6

Brightness Control Method Recommended Brightness Control Circuits are 4 types. 1) Input PWM signal to SHDN terminal I can be adjusted with PWM signal by inputting it to SHDN terminal. F [Notice] <<Minimum ON-time of PWM signal input>> • Set ...

Page 7

Data> 6.8 µH, 4LEDs, R Condition ( 4.7 µ 0.1 µ TB62737FUG TB62757FUG ON Duty width[%] V.S. Error with Ideal Value ...

Page 8

V IN 2.8 to 5.5 V PWM signal 6.8 µ SHDN OVD FB GND 8 TB62757FUG 2006-02-206 ...

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 F PWM 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 R Average of Setting Current Io (mA) is next, approximately (325 ...

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 1: However, do not exceed 6 V. Note 2: Power dissipation must be calculated ...

Page 13

... Evaluation conditions (Ta = 25° CXLD120 series (NEO MAX CO.,Ltd.) 1 (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.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µ IOUT Efficiency Efficiency 3.4 3.7 4 4.3 4 ...

Page 14

... Evaluation conditions (Ta = 25° 1001AS series (TOKO, INC) 1 (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.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µH IOUT I F Efficiency Efficiency 3.4 3.7 4 4.3 4 ...

Page 15

... L : LQH2M series 1 (Murata Manufacturing Co.,Ltd.) (Size: 2.0 mm × 1.6 mm × 0.95 mm C2012JB1E105K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µ IOUT Efficiency Efficiency 3.4 3.7 4 4.3 4.6 4 ...

Page 16

... Evaluation conditions (Ta = 25° VLF3010A series (TDK Corp.) 1 (Size: 3.0 mm × 3.0 mm × 1.0 mm C2012JB1E225K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) Input Voltage - Efficiency/Output Current 5LED Drive, L=10µH IOUT I F Efficiency Efficiency 3.4 3.7 4 4.3 4 ...

Page 17

... TB62757FUG Evaluation conditions (Ta = 25° 32R51 (KOA Corp.) 1 (Size: 3.2 mm × 2.5 mm × 0.6 mm C2012JB1E225K (TDK Corp C2012JB1E105K (TDK Corp.) 2 S-Di : CUS02 1 A/30 V (TOSHIBA Corp.) WLEDs : NSCW215T (NICHIA Corp.) Input Voltage - Efficiency/Output Current 3LED Drive, L=5.1μH 100 Iout Efficiency Efficiency 50 3 ...

Page 18

Package Dimensions Weight: 0.016 g (typ.) 18 TB62757FUG 2006-02-206 ...

Page 19

... The application examples provided in this data sheet are provided for reference only. Thorough evaluation and testing should be implemented when designing your application’s mass production design. In providing these application examples, Toshiba does not grant the use of any industrial property rights. Handling of the IC Ensure that the product is installed correctly to prevent breakdown, damage and/or degradation in the product or equipment ...

Page 20

TB62757FUG 2006-02-206 ...

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