BD8621EFV-E2 datasheet, PDF - EEWORLD Datasheet

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BD8621EFV-E2: DescriptionSwitching Voltage Regulators POWER SUPPLY IC; CategoryPower/power management The power supply circuit; File Size577KB，18 Pages; ManufacturerROHM Semiconductor; Websitehttps://www.rohm.com/; Environmental Compliance

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Switching Voltage Regulators POWER SUPPLY IC

BD8621EFV-E2 Parametric

Parameter Name	Attribute value
Is it lead-free?	Lead free
Is it Rohs certified?	conform to
Maker	ROHM Semiconductor
Parts packaging code	TSSOP
package instruction	HVSSOP, TSSOP20,.25
Contacts	20
Reach Compliance Code	compliant
ECCN code	EAR99
Other features	PFM CONTROL TECHNIQUE ALSO POSSIBLE
Analog Integrated Circuits - Other Types	SWITCHING CONTROLLER
control mode	CURRENT-MODE
Control Technology	PULSE WIDTH MODULATION
Nominal input voltage	3.3 V
JESD-30 code	R-PDSO-G20
length	6.5 mm
Number of functions	1
Number of terminals	20
Maximum operating temperature	85 °C
Minimum operating temperature	-10 °C
Maximum output current	3 A
Package body material	PLASTIC/EPOXY
encapsulated code	HVSSOP
Encapsulate equivalent code	TSSOP20,.25
Package shape	RECTANGULAR
Package form	SMALL OUTLINE, HEAT SINK/SLUG, VERY THIN PROFILE, SHRINK PITCH
Peak Reflow Temperature (Celsius)	NOT SPECIFIED
Certification status	Not Qualified
Maximum seat height	1 mm
surface mount	YES
Switch configuration	SINGLE
Maximum switching frequency	1000 kHz
Temperature level	OTHER
Terminal form	GULL WING
Terminal pitch	0.65 mm
Terminal location	DUAL
Maximum time at peak reflow temperature	NOT SPECIFIED
width	4.4 mm

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System Power Supply for TV Series

FET Controller Type

3ch System Power Supply ICs

BD8621EFV

No.09034EAT03

●Description

BD8621EFV has realized the high performance and reliability required as a power supply for thin-screen TV.

With built-in FET 1ch current mode control, the DC/DC Converter series has the advantage of high-speed load response

and wide phase margin.

Due to the high-speed load response, it is most suitable for TV-purpose processors with increasingly high performance, and

due to the wide phase margin it leaves a good margin for board pattern & constant setting and so facilitates its application

design.

As a high-reliability design, it has various built-in protection circuits (overcurrent protection, output voltage abnormal

protection, thermal protection, and off-latch function at the time of abnormality etc.), therefore as an advantage it does not

easily damage in every possible abnormal condition such as all-pin short circuit test etc. and hence most suitable for

thin-screen TV which requires the high reliability.

●Features

1) 3A output current

2) Low RDS(ON) internal switches (PchMOS:75mΩ，NchMOS:55mΩ)

3) ±1% reference voltage accuracy

4) Programmable frequency : 250kHz-1MHz

5) (Frequency in programmable by adjusting RT resistance or synchronizing with SYNCLK terminal.)

6) Terminal RT OPEN/SHORT detecting function

7) Over current protection function

8) Output over voltage/low voltage protection function (over : FB > VREF +60mV , low : FB < VREF -60mV)

9) Timer off latch function in abnormal circumstances

10) Thermal shutdown function

11) Under voltage protection

12) Soft start/start delay circuit

13) Soft start time out function

14) Protecting BUS function with terminal PDET

15) HTSSOP-B20 package

www.rohm.com

1/14

2009.05 - Rev.A

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