LTC1753CSW#TRPBF Linear Technology, LTC1753CSW#TRPBF Datasheet - Page 3

• Manufacturer Part Number: LTC1753CSW#TRPBF
• Description: IC SW REG CNTRLR PENT III 20SOIC
• Manufacturer: Linear Technology

Specifications of LTC1753CSW#TRPBF

• Applications: Controller, Intel Pentium® III
• Voltage - Input: 5V
• Number Of Outputs: 1
• Voltage - Output: 1.3 ~ 3.5 V
• Operating Temperature: 0°C ~ 70°C
• Mounting Type: Surface Mount
• Package / Case: 20-SOIC (7.5mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The
V
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: When I
This pin can handle input currents greater than 100mA below GND without
latchup. In the positive direction, it is not clamped to V
Note 3: All currents into device pins are positive; all currents out of the
device pins are negative. All voltages are referenced to ground unless
otherwise specified.
Note 4: The Power Good and FAULT trip thresholds are tested at the 1.8V
output voltage code. The Power Good and FAULT trip thresholds are
guaranteed by design for all other output voltage codes to the same
specification.
Note 5: The LTC1753 goes into the shutdown mode if VID0 to VID4 are
floating. Due to the internal pull-up resistors, there will be an additional
0.25mA/pin if any of the VID0 to VID4 pins are pulled low.
Note 6: Supply current in normal operation is dominated by the current
needed to charge and discharge the external FET gates. This will vary with
SYMBOL
G
g
BW
I
I
I
I
t
t
t
t
V
V
t
t
V
V
R
R
V
I
IMAX
SS
SSIL
SSHIL
SSHIL
SINK
PWRGD
PWRBAD
FAULT
r
NOL
CC
mERR
OTDD
SHDN
IH
IL
OL
ERR
, t
SENSE
VID
ERR
f
= 5V, PV
denotes specifications which apply over the full operating temperature range, otherwise specifications are at T
PARAMETER
Error Amplifier Open-Loop DC Gain
Error Amplifier Transconductance
Error Amplifier – 3dB Bandwidth
I
Soft-Start Source Current
Maximum Soft-Start Sink Current
Under Current Limit
Soft-Start Sink Current Under Hard
Current Limit
Hard Current Limit Hold Time
Power Good Response Time
Power Good Response Time
FAULT Response Time
Overtemperature Driver Disable
Shutdown
Driver Rise and Fall Time
Driver Nonoverlap Time
VID0 to VID4 Input High Voltage
VID0 to VID4 Input Low Voltage
SENSE Input Resistance
VID0 to VID4 Internal Pull-Up
Resistance
Digital Output Low Voltage
Digital Output Sink Current
MAX
CC
FB
is taken below GND, it will be clamped by an internal diode.
= 12V, unless otherwise noted. (Note 3)
Sink Current
CC
CONDITIONS
(Note 7)
(Note 7)
COMP = Open (Note 11)
V
V
V
(Notes 8, 9), V
V
V
V
V
V
OUTEN , VID0 to VID4 = 0 (Note 10) (Figure 3)
OUTEN , VID0 to VID4 = 0 (Note 10) (Figure 3)
(Figure 4)
(Figure 4)
I
SINK
IMAX
SS
SENSE
SENSE
SENSE
SENSE
SENSE
SENSE
or PV
= 0V, V
= 1.6mA, Measured at PWRGD and FAULT
= V
= V
= 0V, V
= 0V, V
CC
from 0V to Rated V
from Rated V
from Rated V
.
CC
OUT
IMAX
, V
SS
IMAX
IMAX
= 0V, V
IMAX
= V
= V
= 4V, V
CC
= V
OUT
OUT
CC
IFB
CC
, V
to 0V
to V
the LTC1753 operating frequency, supply voltage and the external FETs
used.
Note 7: The open-loop DC gain and transconductance from the SENSE pin to
COMP pin will be (G
Note 8: The current limiting amplifier can sink but cannot source current.
Under normal (not current limited) operation, the output current will be zero.
Note 9: Under typical soft current limit, the net soft-start discharge current
will be 60 A (I
current ratio is designed to be 5:1.
Note 10: When VID0 to VID4 are all HIGH, the LTC1753 will be forced to
shut down internally. The OUTEN trip voltages are guaranteed by design for
all other input codes.
Note 11: This parameter is guaranteed by design and correlation and is not
tested in production.
= V
, V
IFB
IFB
OUT
CC
IFB
CC
= 0V
from 5V
= 0V
SSIL
) + [– 12 A(I
ERR
)(1.26/3.3) and (g
SS
)] 48 A. The soft-start sink-to-source
MIN
– 16
150
200
200
0.9
0.5
1.6
40
30
20
30
10
2
mERR
– 12
TYP
400
190
500
500
500
100
108
)(1.26/3.3) respectively.
1.6
1.7
0.1
54
60
45
90
20
1
A
LTC1753
1000
1000
MAX
230
150
150
2.3
1.8
0.8
0.8
0.4
= 25 C.
– 8
10
2
millimho
UNITS
1753fa
3
kHz
mA
mA
ms
k
k
dB
ns
ns
A
A
A
V
V
V
V
V
s
s
s