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PDF TB62763FMG Data sheet ( Hoja de datos )
| Número de pieza | TB62763FMG | |
| Descripción | Step Up Type DC/DC Converter | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TOSHIBA BiCD Integrated Circuit Silicon Monolithic
TB62763FMG
Step Up Type DC/DC Converter for White LED
TB62763FMG
The TB62763FMG 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 Hi-current type white LEDs connected series
using a Li-ion battery.
This IC contains N-ch MOS-FET Transistor for Coil-Switching, and
LED current (IF) is set with an external resistor.
This IC is especially for driving back light white LEDs in LCD of
PDA, Cellular Phone, or Handy Terminal Equipment.
SON8-P-0.65
Weight : 0.017 g (Typ.)
Features
• Variable LED current IF is set with a external resistor: 80mA (typ.)
• High current accuracy: +/- 1.5%
• High output power : 3W LED loading @(VOUT=20V, VIN=5V)
• High efficiency: 80% over (using recommended external parts and recommended circuit condition)
• Output over voltage shutdown function
: Switching operation is shut downed when OVP terminal voltage is over 32.5 V (typ.).
• Soft start function included
• Adjustable switching frequency (200kHz-2MHz)
• Package : SON8-P-0.65
Pin Assignment (top view)
SW 1
OVP 2
FB 3
SS 4
8 GND
7 FSET
6 VIN
5 EN
Week 1 to 26
SW 1
OVP 2
FB 3
SS 4
8 GND
7 FSET
6 VIN
5 EN
Week 27 to 53
Note:This IC could be destroyed in some case if amounted in 180° inverse direction.
Please be careful about IC direction in mounting.
1 2015-02-27
1 page  
TB62763FMG
Absolute Maximum Ratings (Ta = 25°C if without notice)
Characteristics
Symbol
Rating
Unit
Power supply voltage
Input voltage
Switching terminal voltage
Power dissipation
Thermal resistance
Operation temperature range
Storage temperature range
Maximum junction temperature
VIN
VIN(EN)
VO (SW)
PD
Rth (j-a)
Topr
Tstg
Tj
-0.3 to +6.0
-0.3 to +VIN + 0.3 (Note 1)
-0.3 to + 48
0.36 (device)
0.64 (on PCB) (Note 2)
340 (device)
193 (on PCB) (Note 3)
-40 to + 85
-55 to + 150
150
V
V
V
W
°C/W
°C
°C
°C
Note 1: Ensure that the supply voltage never exceeds 6.0 V.
Note 2: The power dissipation decreases the reciprocal of the saturated thermal resistance (1/ Rth(j-a)) for each
degree (1°C) that the ambient temperature is exceeded (Ta = 25°C).
Note 3: PCB condition 40mm x 40mm x 1.6 mm, Cu 40%,FR-4
Operating Condition (Ta = -40 to 85°C if without notice)
Characteristics
Power supply voltage
LED current
Symbol
VIN
IF
Test
Circuit
Test Condition
―
―
VIN = 5.0 V, RSENS = 6.26Ω
6 white LEDs, Ta = 25°C
Min Typ. Max Unit
2.8 ― 5.5 V
― 80 ― mA
5 2015-02-27
5 Page 
4. 2 lines control
VIN
4.7µF
10µH or 22µH
CMS11
VIN SW
OVP
EN
FB
FSET
SS
GND
1.0µF
0.1µF
PWM for LED current
10µH or 22µH
CMS11
VIN SW
OVP
EN
FB
FSET
SS
GND
1.0µF
0.1µF
TB62763FMG
11 2015-02-27
11 Page | ||
| Páginas | Total 15 Páginas | |
| PDF Descargar | [ Datasheet TB62763FMG.PDF ] | |
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