CS5157GDR16 반도체 회로 부품 판매점
CPU 5-Bit Synchronous Buck Controller
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 Cherry Semiconductor Corporation |
CS5157
CPU 5-Bit Synchronous Buck Controller
Description
Features
The CS5157 is a 5-bit synchronous
dual N-Channel buck controller. It
is designed to provide unprece-
dented transient response for
today’s demanding high-density,
high-speed logic. The regulator
operates using a proprietary control
method, which allows a 100ns
response time to load transients.
The CS5157 is designed to operate
over a 4.25-16V range (VCC) using
12V to power the IC and 5V as the
main supply for conversion.
The CS5157 is specifically designed
to power Pentium® II processors
and other high performance core
logic. It includes the following fea-
tures: on board, 5-bit DAC, short
circuit protection, 1.0% output tol-
erance, VCC monitor, and pro-
grammable soft start capability. The
CS5157 is available in 16 pin surface
mount.
Application Diagram
Switching Power Supply for core logic - Pentium® II processor
12V 5V
s Dual N-Channel Design
s Excess of 1MHz Operation
s 100ns Transient Response
s 5-Bit DAC
s Backward Compatible with
Adjustable CS5120/5121
s 30ns Gate Rise/Fall Times
s 1% DAC Accuracy
s 5V & 12V Operation
s Remote Sense
s Programmable Soft Start
s Lossless Short Circuit
Protection
s VCC Monitor
s 25ns FET Nonoverlap Time
s V2TM Control Topology
s Current Sharing
s Overvoltage Protection
0.1µF
VID0
VID1
VID2
VID3
VID4
330pF
VCC1 VCC2 VGATE(H)
VID0
VID1
VID2
VID3
VID4
CS5157
VGATE(L)
COFF
PGnd
0.1µF
SS
COMP
0.33µF
LGnd
VFB
VFFB
3.3k
100pF
V2 is a trademark of Switch Power, Inc.
Pentium is a registered trademark of Intel Corporation.
Rev. 12/31/98
1200µF/10V x 3
AlEl
IRL3103
2µH
1.3V to 3.5V @ 13A
IRL3103
1200µF/10V x 5
AlEl
Package Options
16 Lead SO Narrow
VID0 1
VID1
VID2
VID3
SS
VID4
COFF
VFFB
VFB
COMP
LGnd
VCC1
VGATE(L)
PGnd
VGATE(H)
VCC2
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: [email protected]
Web Site: www.cherry-semi.com
1 A ® Company
Absolute Maximum Ratings
Pin Name
Max Operating Voltage
Max Current
VCC1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25mA DC/1.5A peak
VCC2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20mA DC/1.5A peak
SS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-100µA
COMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .200µA
VFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.2µA
COFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.2µA
VFFB . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-0.2µA
VID0 - VID4 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-50µA
VGATE(H) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100mA DC/1.5A peak
VGATE(L) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16V/-0.3V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100mA DC/1.5A peak
LGnd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25mA
PGnd . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .100mA DC/1.5A peak
Operating Junction Temperature, TJ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0° to 150°C
Lead Temperature Soldering
Reflow (SMD styles only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60 sec. max above 183°C, 230°C peak
Storage Temperature Range, TS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .−65° to 150°C
ESD Susceptibility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2kV
Electrical Characteristics: 0°C < TA < +70°C; 0°C < TJ < +85°C; 8V < VCC1 < 14V; 5V < VCC2 < 14V; DAC Code: VID4 = VID2 =
VID1 = VID0 = 1; VID3 = 0; CVGATE(L) and CVGATE(H) = 1nF; COFF = 330pF; CSS = 0.1µF, unless otherwise specified.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
s Error Amplifier
VFB Bias Current
Open Loop Gain
Unity Gain Bandwidth
COMP SINK Current
COMP SOURCE Current
COMP CLAMP Current
COMP High Voltage
COMP Low Voltage
PSRR
VFB = 0V
1.25V < VCOMP < 4V; Note 1
Note 1
VCOMP = 1.5V; VFB = 3V; VSS > 2V
VCOMP = 1.2V; VFB = 2.7V; VSS = 5V
VCOMP = 0V; VFB = 2.7V
VFB = 2.7V; VSS = 5V
VFB =3V
8V < VCC1 < 14V @ 1kHz; Note 1
0.3 1.0 µA
50 60
dB
500 3000
kHz
0.4 2.5 8.0 mA
30 50 70 µA
0.4 1.0 1.6 mA
4.0 4.3 5.0 V
160 600 mV
60 85
dB
s VCC1 Monitor
Start Threshold
Stop Threshold
Hysteresis
Output switching
Output not switching
Start-Stop
3.75 3.90 4.05 V
3.70 3.85 4.00 V
50 mV
s DAC
Input Threshold
Input Pull Up Resistance
Pull Up Voltage
Accuracy
VID4 VID3 VID2 VID1 VID0
011 1 1
011 1 0
011 0 1
011 0 0
010 1 1
010 1 0
010 0 1
010 0 0
001 1 1
001 1 0
001 0 1
VID0, VID1, VID2, VID3, VID4
VID0, VID1, VID2, VID3, VID4
Measure VFB = VCOMP, 25°C ≤ TJ ≤ 85°C
2
1.00
25
4.85
1.2870
1.3365
1.3860
1.4355
1.4850
1.5345
1.5840
1.6335
1.6830
1.7325
1.7820
1.25
50
5.00
1.3000
1.3500
1.4000
1.4500
1.5000
1.5500
1.6000
1.6500
1.7000
1.7500
1.8000
2.40
100
5.15
1.0
1.3130
1.3635
1.4140
1.4645
1.5150
1.5655
1.6160
1.6665
1.7170
1.7675
1.8180
V
kΩ
V
%
V
V
V
V
V
V
V
V
V
V
V
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제조업체: Cherry Semiconductor Corporation
( cherry )
CS5157GDR16 controller
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상호 : 아이지 인터내셔날
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