tb62730wlg TOSHIBA Semiconductor CORPORATION, tb62730wlg Datasheet - Page 2

• Manufacturer Part Number: tb62730wlg
• Description: Step Up Type Dc-dc Converter For White Led
• Manufacturer: TOSHIBA Semiconductor CORPORATION

TOSHIBA
Step Up Type DC-DC Converter for White LED
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.
This device is Pb-free product.
■
TB62730WLG is the high efficient STEP-UP type DC/DC converter by
・High efficiency
・Integrated Over Voltage protection : 10V(MIN.)
・Maximum output voltage : 10V( I
・Operating frequency
・Four operating modes
Features
・Package
Light mode
Flash mode
Shutdown mode
VIN(2.8∼4.2V)
Css
TOSHIBA BiCD Digital Integrated Circuit Silicon Monolithic
Cin
: WLCSP
: 2MHz(TYP.)
: ILED=350mA(Typ.)
: ILED=800mA(Typ.)
: I
: Maximum efficiency : 80%（In the flash mode）
IN
=0.01µA(Typ.)
（V
（V
F
=400mA)
LED
LED
＝4.5V,R1＝0.375Ω,R2=47kΩ,R3＝8.2kΩ）
＝4.5V,R1＝0.375Ω）
EN2
EN1
SS
VIN
GND
TB62730WLG
PGND1 PGND2
L
SW1
アプリケーション
SW2
IL
S-Di
R2
RSENS1
RSENS2
OVP
Tentative
FB+
質量: TBD g (標準)
K1
K2
13-Jun-07 (Rev0.1) TB62730WLG (Page. 2/11)
R3
IF=800mA (Typ.)
WLCSP
TB62730WLG
VOUT
V
R1
LED
Cout