![](http://datasheet.mmic.net.cn/310000/CS5166GDW16_datasheet_16249987/CS5166GDW16_1.png)
1
V
ID0
PWRGD
V
ID1
V
ID4
V
ID3
V
ID2
V
ID1
V
ID4
V
ID3
V
ID2
COMP
12V
5V
1.2
μ
H
GATE(H)
GATE(L)
PGnd
1200
μ
F/10V x 3
1
μ
F
SS
LGnd
330pF
0.1
μ
F
V
ID0
1200
μ
F
10V x 5
Pentium II
System
CS5166
V
FB
C
OFF
V
CC
PWRGD
I
SENSE
3.0m
1000pF
510
3.3K
0.1
μ
F
0.1
μ
F
Features
I
V
2
TM
Control Topology
I
Dual N-Channel Design
I
125ns Controller Transient Response
I
Excess of 1Mhz Operation
I
5-bit DAC with 1% Tolerance
I
Power-Good Output with Internal
Delay
I
Adjustable Hiccup Mode Over
Current Protection
I
Complete Pentium
II System
Requires just 21 Components
I
5V and 12V Operation
I
Adaptive Voltage Positioning
I
Remote Sense Capability
I
Current Sharing Capability
I
V
CC
Monitor
I
Overvoltage Protection (OVP)
I
Programmable Soft Start
I
200ns PWM Blanking
I
65ns FET Non-Overlap
I
40ns Gate Rise and Fall Times
(3.3nF load)
Package Options
16 Lead SO WIDE
C
5-Bit Synchronous CPU Controller
with Power-Good and Current Limit
Description
CS5166
The CS5166 is a synchronous
dual NFET Buck Regulator
Controller. It is designed to pow-
er the core logic of the latest high
performance CPUs. It uses the
V
2
TM
control method to achieve
the fastest possible transient
response and best overall regula-
tion. It incorporates many addi-
tional features required to ensure
the proper operation and protec-
tion of the CPU and power sys-
tem. The CS5166 provides the
industry’s most highly integrat-
ed solution, minimizing external
component count, total solution
size, and cost.
The CS5166 is specifically
designed to power Intel’s
Pentium
II processor and
includes the following features:
5-bit DAC with 1% tolerance,
Power-Good output, adjustable
hiccup mode over-current pro-
tection, V
CC
monitor, Soft Start,
adaptive voltage positioning,
over-voltage protection, remote
sense and current sharing capa-
bility.
The CS5166 will operate over a
4.15 to 14V range and is available
in a 16 lead wide body surface
mount package.
Application Diagram
1
A
Company
V
ID0
V
ID1
V
ID2
V
ID3
I
SENSE
C
OFF
SS
V
ID4
V
FB
COMP
LGnd
PWRGD
GATE(L)
PGnd
GATE(H)
V
CC
Pentium is a registered trademark of Intel Corporation.
5V to 2.8V @ 14.2A for 300MHz Pentium II
V
2
is a trademark of Switch Power, Inc.
Rev. 6/28/99
Cherry Semiconductor Corporation
2000 South County Trail, East Greenwich, RI 02818
Tel: (401)885-3600 Fax: (401)885-5786
Email: info@cherry-semi.com
Web Site: www.cherry-semi.com