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MC33998 Fiches technique(PDF) 2 Page - Freescale Semiconductor, Inc

No de pièce MC33998
Description  Switching Power Supply with Linear Regulators
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Fabricant  FREESCALE [Freescale Semiconductor, Inc]
Site Internet  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

MC33998 Fiches technique(HTML) 2 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
2
Freescale Semiconductor
33998
INTERNAL BLOCK DIAGRAM
INTERNAL BLOCK DIAGRAM
Figure 2. 33998 Simplified Internal Block Diagram
SNSEN
VPWR
KA_VPWR
PG ND
33998
EN
VSW
VDDH
DRVL
FBL
PWRO K
VKAM
VKAMO K
Vbg
VREF1
VREF2
I-lim
Ramp
Osc
Sof t
Start
Logic
&
Latch
PwrO K
VkamOK
POR
2.6V
Linear
Regulat or
Driver
2.6V
Standby
Reg.
Bandgap
Voltage
Reference
Charge
Pump
VREF1
Reg.
VREF2
Reg.
Vbg
Vbg
CRES
VSUM
FBKB
Enable
Cont rol
Enb
Snsenb
5.0 V
5.0 V
2. 6 V
5.0 V
2. 6 V
Snsenb
Snsenb
Enb
Enb
Enb
Ret ry
Ret ry
Drive


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