ISL6537A Datasheet, PDF (5/16 Pages) Intersil Corporation – ACPI Regulator/Controller for Dual Channel DDR Memory Systems

ISL6537A
Absolute Maximum Ratings
5VSBY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +7V
P12V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . GND - 0.3V to +14V
Absolute Boot Voltage, V_BOOT . . . . . . . . . . . . . . . . . . . . . . . +15.0V
Upper Driver Supply Voltage, V_BOOT - V_PHASE . . . . . . . . 7.0V (DC)
8.0V (<10ns Pulse Width, 10μJ)
All other Pins . . . . . . . . . . . . . . . . . . . . GND - 0.3V to 5VCC + 0.3V
ESD Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Class 2
Thermal Information
Thermal Resistance (Typical, Notes 1, 2) θ_JA (°C/W) θ_JC (°C/W)
QFN Package . . . . . . . . . . . . . . . . . . .
32
5
Maximum Junction Temperature (Plastic Package) . . . . . . +150°C
Maximum Storage Temperature Range . . . . . . . . . -65°C to +150°C
Pb-free reflow profile . . . . . . . . . . . . . . . . . . . . . . . . . .see link below
http://www.intersil.com/pbfree/Pb-FreeReflow.asp
Recommended Operating Conditions
Supply Voltage on 5VSBY . . . . . . . . . . . . . . . . . . . . . . . . +5V ±10%
Supply Voltage on P12V . . . . . . . . . . . . . . . . . . . . . . . . +12V ±10%
Ambient Temperature Range . . . . . . . . . . . . . . . . . . . . 0°C to +70°C
Junction Temperature Range. . . . . . . . . . . . . . . . . . . 0°C to +125°C
CAUTION: Do not operate at or near the maximum ratings listed for extended periods of time. Exposure to such conditions may adversely impact product reliability and
result in failures not covered by warranty.
NOTES:
1. θ_JA is measured in free air with the component mounted on a high effective thermal conductivity test board with “direct attach” features. See
Tech Brief TB379.
2. For θ_JC, the “case temp” location is the center of the exposed metal pad on the package underside.
Electrical Specifications Recommended Operating Conditions, Unless Otherwise Noted. Refer to Block and Simplified Power System
Diagrams and Typical Application Schematics
PARAMETER
SYMBOL
TEST CONDITIONS
MIN TYP MAX UNITS
5VSBY SUPPLY CURRENT
Nominal Supply Current
POWER-ON RESET
I_{CC_S0} S3# and S5# HIGH, UGATE/LGATE Open
5.5 7.0 8.0
mA
I_{CC_S5} S5# LOW, S3# Don’t Care, UGATE/LGATE Open -
700 850
μA
Rising 5VSBY POR Threshold
4.10 - 4.45
V
Falling 5VSBY POR Threshold
3.60 - 3.95
V
Rising P12V POR Threshold
10.0 - 10.5
V
Falling P12V POR Threshold
8.80 - 9.75
V
OSCILLATOR AND SOFT-START
PWM Frequency
Ramp Amplitude
Soft-Start Interval
REFERENCE VOLTAGE
f_OSC
ΔV_OSC
t_SS
220 250 280 kHz
-
1.5
-
V
6.5 8.2 9.5
ms
Reference Voltage
System Accuracy
V_REF
- 0.800 -
V
-2.0 - +2.0
%
V_DDQ AND V_GMCH PWM CONTROLLER ERROR AMPLIFIERS
DC Gain
(Note 3)
-
80
-
dB
Gain-Bandwidth Product
GBWP (Note 3)
15
-
-
MHz
Slew Rate
SR
(Note 3)
-
6
-
V/μs
CONTROL I/O (S3#, S5#)
LOW Level Input Threshold
0.75 -
-
V
HIGH Level Input Threshold
-
-
2.2
V
5
FN9143.5