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BD8924G

Rohm
Part Number BD8924G
Manufacturer Rohm
Description Silicon monolithic
Published Jul 19, 2010
Detailed Description www.DataSheet4U.com 1/4 ● Structure ● Product name ● Type ● Package outline ● Block Diagram ● Features Silicon monoli...
Datasheet PDF File BD8924G PDF File

BD8924G
BD8924G

Overview
www.
DataSheet4U.
com 1/4 ● Structure ● Product name ● Type ● Package outline ● Block Diagram ● Features Silicon monolithic integrated circuit Boost DCDC converter for TV tuner BＤ8924G Fig.
1 Fig.
2 1) For varactor voltage in the TV tuner.
2) Over current Protection circuit 3) SSOP-5 small size ◎ This chip is not designed to protect itself against radioactive rays.
Absolute maximum ratings（Ta=25℃） Parameter Maximum applied voltage1 Maximum applied voltage 2 Power dissipation Operating temperature range Storage temperature range Symbol Vmax1 Vmax2 Pd1 Topr Tstr Ratings 7.
0 36 674.
9 (Note1) -30 ～ +85 -55 ～ +150 Unit V V o o Condition It applies to VIN terminal It applies to SW, VOUT terminals mW At single unit C C (Note1) Pd derated at 5.
4mW/℃ for temperature above Ta=25℃, mounted on 70mm×70mm×1.
6mm glass-epoxy PCB.
Operation condition（Ta=25℃） Parameter Power supply voltage range Symbol VCC Ratings 4.
5～5.
5 Unit V Condition VIN terminal voltage REV.
A www.
DataSheet4U.
com 2/4 D 0 LOT NO.
Fig.
1 Package outline Fig.
1 Package Outline Pin assigns NO.
1 2 3 4 5 Pin Name SW GND VOUT GND VIN I/O I O - Function Inductor connection terminal GND Boost voltage output GND Power supply input VIN SW VOUT OPEN PROTECT S Q1 PWM comp.
Q R Current Sense Control + + + OSC ERRAMP GND Fig.
2 Block Diagram REV.
A www.
DataSheet4U.
com 3/4 (a) Iomax ≦ 2.
0mA L1 47μH A SBD R1 1kΩ to tuner ICC SW VIN VIN C1 10μF BD8924 GND VOUT C2 1μF C3 0.
1μF (b) 2mA < Iomax ≦ 4.
0mA L1 68μH A SBD R1 1kΩ to tuner ICC SW + VIN VIN C1 10μF BD8924 GND VOUT C2 1μF C4 15μF C3 0.
1μF Please use RC-LPF of R1 and C3 if you need to cut the noise.
We do not guarantee the operation of circuit if you use LC filter.
About recommended parts, please see the technical-note.
Fig.
3 Recommended Circuit Electrical characteristic (Unless otherwise specified Ta=25℃、VIN=5V) Parameter Circuit current Oscillation frequency Output voltage range Maximum output current1 Maximum output c...


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