tb62734fmg TOSHIBA Semiconductor CORPORATION, tb62734fmg Datasheet - Page 2

• Manufacturer Part Number: tb62734fmg
• Description: Step-up Type Dc-dc Converter For White Led?s
• Manufacturer: TOSHIBA Semiconductor CORPORATION

Block Diagram
Pin Description
Note: Connect the PGND and GND pins to the ground.
V
No.
IN
1
2
3
4
5
6
7
8
Range
1.0~2.5 V
RSENS
Symbol
PGND
GND
OVD
V
CTL
A
K
CC
detection
voltage
Over-
TSD
Supply voltage pin. Supply voltage range: 2.8 V to 5.5 V
Input pin for IC ON/OFF control and variable LED I
0 to 0.4 V: Shutdown mode (IC shutdown)
1.0 V to 2.5 V: I
Over 2.6 V: I
Feedback pin for output voltage
Sink driver pin for step-up DC-DC converter
Ground pin for power line
Ground pin
Pin for connecting the resistance for LED current Io setup.
Connected to the LED cathode
V
CC
mono multi
Reference
GND
detect
Level
O
= 100%
O
= 30 to 100% variable (linear control)
CTL
AMP.
mono multi
4.7 to 10 µH
Off time
control
PGND
2
CTL
AMP.
Error
AMP.
Function
A
O
.
RSENS
3.3 Ω @ I
7.5 Ω @ I
K
O
O
= 40 mA
= 20 mA
TB62734FMG
2006-06-14