TB62756FUG Toshiba, TB62756FUG Datasheet

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TB62756FUG

Manufacturer Part Number
TB62756FUG
Description
Manufacturer
Toshiba
Datasheet

Specifications of TB62756FUG

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
-
Other Features & Functions
-
Rohs Compatible Product(s) (#)
-
Step-up Type DC-DC Converter for White LEDs
converter that is designed especially for use as a constant current
driver of white LEDs.
using a lithium-ion battery.
of an external inductor.
external resistor.
lighting in color LCDs in PDAs, cellular phones and handy
terminal devices.
Features
The TB62756FUG is a high efficiency step-up type DC-DC
It is possible to drive 2 to 6 white LEDs connected in series
This IC incorporates an N-ch MOSFET required for switching
The forward current of the LEDs can be controlled by an
This IC is best suited for use as a driver of white LED back
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 (Recommended parts)
IC package: SSOP6-P-0.95B (SOT23-6)
Switching frequency: 1.1 MHz (typ.)
TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic
F
is set with a external resistor: 20 mA (typ.) @R
TB62756FUG
1
Weight: 0.016 g (typ.)
SENS
= 16 Ω
TB62756FUG
2010-06-27

Related parts for TB62756FUG

TB62756FUG Summary of contents

Page 1

... TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic Step-up Type DC-DC Converter for White LEDs The TB62756FUG is a high efficiency step-up type DC-DC converter that is designed especially for use as a constant current driver of white LEDs possible to drive white LEDs connected in series using a lithium-ion battery. ...

Page 2

... Note 2: The NC terminal is not connected to the internal circuit, so placing it on another terminal pattern does not represent a problem Monostable Monostable multivibrator multivibrator for for reference off time control Circuit on/off SHDN (NC) GND Function 2 TB62756FUG NC 2 CTL AMP Error AMP. 5 GND 2010-06-27 (Note 2) ...

Page 3

... I/O Equivalent Pin Circuits 1. SHDN Pin V IN SHDN Pin Pin NC 2 The NC pin is not connected to any internal circuit, so placing it on another terminal pattern does not present a problem Pin TB62756FUG 2010-06-27 ...

Page 4

... Monostable multivibrator for for off time control CTL AMP. Error on/off AMP the figure below possible to control the output ZD connection Ω) SENS 4 TB62756FUG NC 2 500 Ω GND S- GND FB R SENS Protection Circuit Application 2010-06-27 1 μ ...

Page 5

... The recommended PWM frequency should be 100 kHz. <<Output current is calculated using the following equation>> [ × ] 325 SENS be equal to, or greater than 1.0 (μF). 2 Note = value, and calculated using the following equation: SENS (Ω)] [%] Duty [ ] Ω 5 TB62756FUG 2010-06-27 ...

Page 6

... V O (SW) ⎯ (SW) ⎯ (SW Ω SENS 4.7 μ 3.6 V center V IN Δ 3 5 TB62756FUG Unit V + 0.3 (Note °C/W °C °C °C Min Typ. Max ⎯ 2.8 5.5 ⎯ ⎯ 33 ⎯ ⎯ 20 Min Typ. Max ⎯ ...

Page 7

... Efficiency Efficiency Output current in the range 4.6 4.9 5.2 5.5 2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 7 TB62756FUG 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 ...

Page 8

... Efficiency Efficiency Output current in the range 4.6 4.9 5.2 5.5 2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 8 TB62756FUG 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=10μ ...

Page 9

... Efficiency Efficiency Output current in the range 4.6 4.9 5.2 5.5 2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 9 TB62756FUG Evaluation conditions (Ta = 25° LQH2M series 1 (Murata Manufacturing Co., Ltd.) (Size: 2.0 mm × 1.6 mm × 0.95 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 ...

Page 10

... Efficiency Efficiency Output current in the range 4.6 4.9 5.2 5.5 2 LEDs 3 LEDs 4 LEDs 5 LEDs 6 LEDs 10 TB62756FUG 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=10μ ...

Page 11

... Output current in the range Iout 60 Efficiency Efficiency 50 4.6 4.9 5.2 5.5 2 LEDs 3 LEDs 4 LEDs 11 TB62756FUG 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=5.1μ ...

Page 12

... Package Dimensions Weight: 0.016 g (typ.) 12 TB62756FUG 2010-06-27 ...

Page 13

... DC voltage will increase. If this output voltage is connected to a speaker with low input withstand voltage, overcurrent or IC failure can cause smoke or ignition. (The over current can cause smoke or ignition from the IC itself.) In particular, please pay attention when using a Bridge Tied Load (BTL) connection type IC that inputs output DC voltage to a speaker directly. 13 TB62756FUG 2010-06-27 ...

Page 14

... If the current sink capability of the power supply is small, the device’s motor power supply and output pins might be exposed to conditions beyond maximum ratings. To avoid this problem, take the effect of back-EMF into consideration in system design. 14 TB62756FUG ) at any time and J 2010-06-27 ...

Page 15

... Use of Sn-37Pb solder Bath solder bath temperature: 230°C dipping time: 5 seconds the number of times: once use of R-type flux (2) Use of Sn-3.0Ag-0.5Cu solder Bath solder bath temperature: 245°C dipping time: 5 seconds the number of times: once use of R-type flux 15 TB62756FUG 2010-06-27 ...

Page 16

... Please contact your TOSHIBA sales representative for details as to environmental matters such as the RoHS compatibility of Product. Please use Product in compliance with all applicable laws and regulations that regulate the inclusion or use of controlled substances, including without limitation, the EU RoHS Directive. TOSHIBA assumes no liability for damages or losses occurring as a result of noncompliance with applicable laws and regulations. 16 TB62756FUG 2010-06-27 ...

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