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BD9P105MUF-CE2 Folha de dados(PDF) 23 Page - Rohm

Nome de Peças BD9P105MUF-CE2
Descrição Electrónicos  3.5 V to 40 V Input, 1 A Single 2.2 MHz Buck DC/DC Converter For Automotive
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Fabricante Electrônico  ROHM [Rohm]
Página de início  http://www.rohm.com
Logo ROHM - Rohm

BD9P105MUF-CE2 Folha de dados(HTML) 23 Page - Rohm

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© 2019 ROHM Co., Ltd. All rights reserved.
28.Apr.2020 Rev.001
www.rohm.com
TSZ22111 • 15 • 001
BD9P1x5MUF-C Series
TSZ02201-0J1J0AL01500-1-2
Function Explanation - continued
7.
Spread Spectrum Function
Connecting the SSCG pin with the VREG pin activates the Spread Spectrum function, reducing the EMI noise level.
When the Spread Spectrum function is activated, the switching frequency is varied with triangular wave of ΔfSSCG
(±4.5 %, Typ) amplitude centered on typical frequency fSW (2.2 MHz, Typ). The period of the triangular wave is
tSSCG_CYCLE (466 µs, Typ). However, this function is masked when the RESET output is low. Connecting the SSCG pin
with GND deactivates this function.
Figure 37. Spread Spectrum Function
VIN
VEN
VOUT
fSW
VRESET
VSSCG
tDLY
fSW
2.2 MHz
(Typ)
tRSTNACT
Δf
SSCG = -4.5 % (Typ)
SSCG OFF
SSCG ON
VRTH
3.6 ms
(Typ)
400 µs
(Typ)
tSSCG_CYCLE
466 µs
(Typ)
Δf
SSCG = +4.5 % (Typ)


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