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CS5323 Datasheet

Two-Phase Buck Controller

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CS5323
Three−Phase Buck
Controller with 5−Bit DAC
The CS5323 is a threephase step down controller that incorporates
all control functions required to power next generation processors.
Proprietary multiphase architecture guarantees balanced load current
distribution and reduces overall solution cost in high current
applications. Enhanced V2control architecture provides the fastest
possible transient response, excellent overall regulation, and ease of
use.
The multiphase architecture reduces input and output filter ripple,
allowing for a reduction in filter size and inductor values with a
corresponding increase in the output inductor current slew rate.
Features
Enhanced V2 Control Method
5Bit DAC with 1.0% Tolerance
Adjustable Output Voltage Positioning
Programmable Frequency Set by Single Resistor
200 kHz to 800 kHz Operation (Per Phase)
Current Sensed through Sense Resistors, or Buck Inductors
Adjustable Current Sense Threshold
Hiccup Mode Current Limit
OverVoltage Protection through Synchronous MOSFET’s
Individual Current Limits for Each Phase
OnBoard Current Sense Amplifiers
3.3 V, 1.0 mA Reference Output
5.0 V and/or 12 V Operation
On/Off Control (through COMP Pin)
http://onsemi.com
20
1
SO20L
DW SUFFIX
CASE 751D
PIN CONNECTIONS AND
MARKING DIAGRAM
ROSC 1
COMP
VFB
VDRP
CS1
CS2
CS3
CSREF
ILIM
REF
VCC
GATE1
GATE2
GATE3
GND
VID4
VVIIDD23
VID1
VID0
A
WL, L
YY, Y
WW, W
= Assembly Location
= Wafer Lot
= Year
= Work Week
ORDERING INFORMATION
Device
Package
Shipping
CS5323GDW20
SO20L 37 Units/Rail
CS5323GDWR20 SO20L 1000 Tape & Reel
© Semiconductor Components Industries, LLC, 2006
July, 2006 Rev. 7
1
Publication Order Number:
CS5323/D


  ON Semiconductor Electronic Components Datasheet  

CS5323 Datasheet

Two-Phase Buck Controller

No Preview Available !

CS5323
12 VIN
5 VIN
C5
1.0 μF
ENABLE
R10
8.0 k
C4
0.1 μF
R9
1.0 k
C28
1.0 nF R6
7.5 k
C22
.01 μF
C21
.01 μF
R15
30.1 k
C12
1.0 nF
R12
75 k
R1
10 Ω
C17
.01 μF
C11
2.0 nF
ROSC
COMP
U2
VCC
GATE1
VFB
VDRP
CS1
GATE2
GATE3
Gnd
CS2
VID4
C23 C24
.01 μF .01 μF
R13 CS3
10 k
CSREF
ILIM
REF
VID3
VID2
VID1
VID0
R17
R16 30.1 k
30.1 k
R14
2.7 k
C25
0.1 μF
R18
1.0 k
VID0
VID1
VID2
VID3
VID4
C19
1.0 μF
C27
1.0 μF
R19
10 k
D1 C4
L1
300 nH
BAS40LT1
1.0 μF
MTD3302
Q1
U1
Q2
D3
BAS40LT1
U3
C18
1.0 μF
Q3
MTD3302
Q4
D5 C26
BAS40LT1
1.0 μF Q5
MTD3302
U4
Q6
+
C13
3 × 16S0180M
L2
850 nH
VOUT
+ C16
8×
4SP560M
L3
850 nH
C20
3×
10 μF
L4
850 nH
Figure 1. Application Diagram, 12 V to 1.7 V Converter
http://onsemi.com
2


Part Number CS5323
Description Two-Phase Buck Controller
Maker ON Semiconductor
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CS5323 Datasheet PDF






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