TB62750FTG Datasheet, PDF (1/10 Pages) Marktech Corporate – Step Up Type DC-DC Converter for White LED

Tentative
TB62750FTG
TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic
TB62750FTG
Step Up Type DC-DC Converter for White LED
TB62750FTG is the high efficient STEP-UP type DC/DC converter by
which the optimal design was carried out at constant current driver of
white LED.
It is possible to drive white LEDs whose constant output current is 800mA
by the lithium ion battery.
This IC contains the Nch-MOS transistor required for switching of external
inductor.
The forward current of LED is set up by the external resistor.
This IC is the most suitable as a driver of camera flashes and strobes in
the cellular phone, the PDA, the DSC, and other mobiles.
■ Features
・Switching terminal current
・Maximum output power
・Maximum output voltage
・Operating frequency
・Four operating modes
Light mode
Flash mode
:1.8A(Typ.)
:
:10V
:2MHz
:ILED=350mA(Typ.) (R3=8.2kΩ,R2=62kΩ)
:ILED=800mA(Typ.) (RSENS=0.375Ω)
Shutdown mode :Icc=0.01µA(Typ.)
・High efficiency
:Maximum efficiency : 80%(In the flash mode)
VIN(3.0～4.2)
Application
L
S-Di
Cin
VIN
SW1SW2 SW3
OVP
K1
K2
K3
EN2
RSENS1
EN1
RSENS2
RSENS3
SS
FB+
Css
PGND1 PGND3
GND PGND2
IL
FB-
R2
（ＶQON24-0404-0.65）
Weight： 0.09g (Typ.)
現品表示 ；
800mA (TYP)
Cout
R3
R4
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