Multiple Linear Power Controller with
ACPI Control Interface
The HIP6503 complements either an HIP6020 or an
HIP6021 in ACPI-compliant designs for microprocessor and
computer applications. The IC integrates four linear
controllers/regulators, switching, monitoring and control
functions into a 20 pin SOIC package. One linear controller
generates the 3.3V
supply’s 5VSB output, powering the south bridge and the
PCI slots through an external pass transistor during sleep
states (S3, S4/S5). A second transistor is used to switch in
the ATX 3.3V output for operation during S0 and S1/S2
(active) operating states. A linear controllers/regulator
supplies at choice either of 2.5V or 3.3V memory power
through external pass transistors (switch for 3.3V setting) in
active states. During sleep states, integrated pass
transistors supply the sleep power. Another controller
powers up the 5V
output in active states, and the ATX 5VSB in sleep states.
Two internal regulators output both a dedicated, noise-free
2.5V clock chip supply, as well as a 1.8V ICH2 resume well
voltage. The HIP6503’s operating mode (active outputs or
sleep outputs) is selectable through two digital control pins,
S3 and S5. Enabling sleep state support on the 5V
output is offeredthroughtheEN5VDL pin. In active state, the
3.3V
/3.3VSB and 2.5V
DUAL
use external N-channel pass MOSFETs to connect the
outputs directly to the 3.3V input supplied by an ATX power
supply, for minimal losses. In sleep state, power delivery on
both outputs is transferred to NPN transistors - external to
the controller on the 3.3V
2.5V
MEM
/3.3V
MEM
output is performed through an external NPN transistor. The
5V
output is powered through two external MOS
DUAL
transistors. In sleep states, a PMOS (or PNP) transistor
conducts the current from the ATX 5VSB output; while in
active state, current flow is transferred to an NMOS
transistor connected to the ATX 5V output. The operation of
the 5V
output is dictated not only by the status of the
DUAL
S3 and S5 pins, but that of the EN5VDL pin as well. The
3.3V
/3.3VSBand 1.8VSBoutputs are active for as long
DUAL
as the ATX 5VSB voltage is applied to the chip. The 2.5V
output is only active during S0 and S1/S2, and uses the 3V3
pin as input source for its internal pass element.
/3.3VSBvoltage plane from the ATX
DUAL
plane by switching in the ATX 5V
DUAL
/3.3V
MEM
/3.3VSB, internal on the
DUAL
linear regulators
MEM
. Active state regulation on the 2.5V
DUAL
MEM
CLK
File Number4882.1
Features
• Provides 5 ACPI-Controlled Voltages
-5V
- 3.3V
- 2.5V
- 2.5V
- 1.8V
USB/Keyboard/Mouse (Active/Sleep)
DUAL
/3.3VSB PCI/Auxiliary/LAN (Active/Sleep)
DUAL
RDRAM or 3.3V
MEM
Clock/Processor Terminations (Active Only)
CLK
ICH2 Resume
SB
SDRAM (Active/Sleep)
MEM
• Excellent Output Voltage Regulation
- 3.3V
/3.3VSB Output: ±2.0% Over Temperature;
DUAL
Sleep State Only
- 2.5V
Both Operational States (3.3V
- 1.8V
MEM
, 2.5V
SB
/3.3V
Output: ±2.0% Over Temperature;
MEM
Outputs: ±2.0% Over Temperature
CLK
in sleep only)
MEM
• Small Size
- Very Low External Component Count
• Dual Memory Voltage Selection Via FAULT/MSEL Pin
- 2.5V for RDRAM Memory
- 3.3V for SDRAM Memory
• Undervoltage Monitoring of All Outputs with Centralized
FAULT Reporting and Temperature Shutdown
Applications
•
Motherboard Power Regulation for ACPI-Compliant
Computers
Pinout
HIP6503
(SOIC)
TOP VIEW
5VSB
1V8IN
1V8SB
3V3DLSB
3V3DL
VCLK
3V3
EN5VDL
S3
S5
1
2
3
4
5
6
7
8
9
10
20
VSEN2
19
DRV2
18
5V
17
12V
16
SS
5VDL
15
5VDLSB
14
13
DLA
12
FAULT/MSEL
11
GND
Ordering Information
TEMP.
PART NUMBER
HIP6503CB0 to 7020 Ld SOICM20.3
HIP6503EVAL1Evaluation Board
CAUTION: Stresses above those listed in “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress only rating and operation of the
device at these or any other conditions above those indicated in the operational sections of this specification is not implied.
NOTE:
1. θJA is measured with the component mounted on a high effective thermal conductivity test board in free air. See Tech Brief TB379 for details.
Electrical SpecificationsRecommended Operating Conditions, Unless Otherwise Noted Refer to Figures 1, 2 and 3