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33997 데이터 시트보기 (PDF) - Freescale Semiconductor
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33997
Switching Power Supply with Linear Regulators
Freescale Semiconductor
33997 Datasheet PDF : 20 Pages
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Freescale Semiconductor, Inc.
VPW
R
KA_VPW
R
5.0 V
VRE
F1
5.0 V
VRE
F2
339 97
I -lim
D r iv e
S oft
Start
Enb
O sc
Logic
&
Latch
Ramp
V
bg
Retry
VREF1
Reg.
B andgap
Voltage
Vbg
S nsenb
Reference
Retry
VREF2
Reg.
Sns e nb
Sn senb
En able
Co ntrol
E nb
Enb
3.3V
Lin ear
Re gulat or
D r i ver
POR
Enb
Vbg
3.3V
S ta ndb y
R eg .
Charge
Pump
PwrOK
Vk am OK
VSW
5.0 V
FBKB
VSUM
VDD
H
DR VL
FBL
3.3 V
V
KAM
3.3 V
PWROK
VKAMOK
CR
ES
SNSEN
EN
GND
Figure 1. 33997 Simplified Block Diagram
33997
2
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INTEGRATED CIRCUIT DEVICE DATA
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