lm2633mtd National Semiconductor Corporation, lm2633mtd Datasheet - Page 14

• Manufacturer Part Number: lm2633mtd
• Description: Advanced Two-phase Synchronous Triple Regulator Controller For Notebook Cpus
• Manufacturer: National Semiconductor Corporation

www.national.com
Error Amplifier
I
I
I
I
V
Gm
DAC Output and V
V
Linear Regulator Controller
V
V
I
V
Logic Inputs and Outputs
V
V
I
V
fb2
fb3
comp1
comp2
g3_sc
oh_pg
Electrical Characteristics
V
comp_max
fb2
fb3
g3_sk
g3_max
ih
il
ol_pg
V
= T
Note 11: Absolute maximum ratings indicate limits beyond which damage to the device may occur. Operating Ratings are conditions under which operation of the
device is guaranteed. For guaranteed performance limits and associated test conditions, see the Electrical Characteristics table.
Note 12: Maximum allowable power dissipation is calculated by using P
ambient temperature and
for T
dissipation of more power. The Absolute Maximum power dissipation should be derated by 12.5mW per ˚C above 25˚C ambient. The LM2633 actively limits its
junction temperature to about 150˚C.
Note 13: For detailed information on soldering plastic small-outline packages, refer to the Packaging Databook available from National Semiconductor Corporation.
Note 14: Except for ILIM1 and ILIM2 pins, which are 1.5kV. For testing purposes, ESD was applied using the human-body model, a 100pF capacitor discharged
through a 1.5k
Note 15: A typical is the center of characterization data taken with T
Note 16: All limits are guaranteed. All electrical characteristics having room-temperature limits are tested during production with T
limits are guaranteed by correlating the electrical characteristics to process and temperature variations and applying statistical process control.
Note 17: This test simulates heavy load condition by changing COMP pin voltage.
Note 18: This parameter indicates how much current the LM2633 is drawing from the input supply when it is functioning but not driving external MOSFETs or a
bipoloar transistor.
Symbol
dac
CC
J
JMAX
,
= +15V unless otherwise indicated under the Conditions column. Typicals and limits appearing in plain type apply for T
= +25˚C. Limits appearing in boldface type apply over −40˚C to +125˚C.
, T
A
, and
resistor.
Feedback Input Bias
Current, Channel 2
Feedback Input Bias
Current, Channel 3
COMP Output Sink
Current
COMP Pin Maximum
Voltage
Transconductance
Channel 1 DAC Output
Voltage Accuracy
Channel 2 DC Output
Voltage Accuracy
Channel 3 DC Output
Voltage Accuracy
G3 Sink Current
G3 Minimum Source
Current
G3 Maximum Voltage
Minimum High Level
Input Voltage (FPWM,
VID0-VID4)
Maximum Low Level
Input Voltage (FPWM,
ON/SS1, ON/SS2,
VID0-VID4)
PGOOD Output High
Current
PGOOD Output Low
Voltage
JA
FB2
respectively. A
Parameter
JA
is the junction-to-ambient thermal resistance of the specified package. The 1.56W rating results from using 150˚C, 25˚C, and 80˚C/W
JA
of 90˚C/W represents the worst-case condition of no heat sinking of the 48-pin TSSOP. Heat sinking allows the safe
V
V
V
V
V
VCOMP1 = 1V, DAC codes from 1.3V
to 1.6V
VCOMP1 = 1V, DAC codes from
0.925V to 1.25V and from 1.65V to
2.00V
COMP2 pin from 0.5V to 1.8V
PGOOD = 5.7V (Note 23)
PGOOD Sinking 20 µA
FB2
FB3
FB1
FB2
COMP1
(Continued)
= 1.36V
= 1.36V
= 150% of measured 1.4V DAC,
= 150% of measured bandgap,
= V
COMP2
A
Conditions
= T
DMAX
J
= 25˚C. Typical data are not guaranteed.
= 1V
= (T
14
JMAX
- T
A
)/
JA
, where T
JMAX
1.212
1.209
−2.0
−2.2
Min
tbd
2.2
is the maximum junction temperature, T
1.238
1.96
1.24
Typ
576
3.6
0.3
18
70
91
20
20
5
A
= T
J
= 25˚C. All hot and cold
1.264
1.271
Max
2.0
2.2
0.7
A
Units
µmho
is the
mA
nA
nA
µA
µA
µA
%
V
V
V
V
V
V
V
A