ADP3155 Analog Devices, ADP3155 Datasheet - Page 2

• Manufacturer Part Number: ADP3155
• Description: 5-Bit Programmable Triple Power Supply Controller for Pentium III Processors
• Manufacturer: Analog Devices

ADP3155–SPECIFICATIONS
Parameter
OUTPUT ACCURACY
OUTPUT VOLTAGE LINE
INPUT DC SUPPLY CURRENT
CURRENT SENSE THRESHOLD
VID0–VID4 THRESHOLD
VID0–VID4 INPUT CURRENT
VID0–VID4 PULL-UP RESISTANCE
C
OFF-TIME
DRIVER OUTPUT TRANSITION
POSITIVE POWER GOOD TRIP POINT
NEGATIVE POWER GOOD TRIP POINT
POWER GOOD RESPONSE TIME
CROWBAR TRIP POINT
ERROR AMPLIFIER
ERROR AMPLIFIER
ERROR AMPLIFIER MINIMUM
ERROR AMPLIFIER MAXIMUM
ERROR AMPLIFIER BANDWIDTH –3 dB
LINEAR REGULATOR FEEDBACK
LINEAR REGULATOR
SHUTDOWN (SD) PIN
NOTES
1
2
3
Specifications subject to change without notice.
All limits at temperature extremes are guaranteed via correlation using standard Statistical Quality Control (SQC) methods.
Dynamic supply current is higher due to the gate charge being delivered to the external MOSFETs.
The trip point is for the output voltage coming into regulation.
T
1.3 V Output Voltage
2.0 V Output Voltage
3.5 V Output Voltage
REGULATION
Normal Mode
Shutdown
VOLTAGE
Low
High
TIME
OUTPUT IMPEDANCE
TRANSCONDUCTANCE
OUTPUT VOLTAGE
OUTPUT VOLTAGE
CURRENT
OUTPUT VOLTAGE
Low Threshold
High Threshold
Input Current
PIN DISCHARGE CURRENT
2
3
3
Symbol
V
I
V
VID
I
R
I
t
t
V
V
t
V
RO
g
V
V
BW
I
V
V
SD
SD
SD
Q
OFF
R
PWRGD
FB
VID
11
m(ERR)
V
O
SENSE(TH)
VID
PWRGD
PWRGD
CROWBAR
CMPMIN
CMPMAX
OLDO1
OLDO2
, t
O
L
H
IC
ERR
ERR
F
(TH)
(0 C T
,
Conditions
(Figure 13)
I
V
V
T
V
VID = 0 V
T
V
V
C
C
T
% Above Output Voltage
% Below Output Voltage
% Above Output Voltage
V
V
CMP = Open
Figure 2, R3 = R5 = 20 k
R4 = R6 = 35 k , I
Part Active
Part in Shutdown
LOAD
IN
SD
A
SENSE–
A
OUT
OUT
A
SENSE+
SENSE+
A
T
L
–2–
= +25 C, VID Pins Floating
= +25 C
= +25 C
= 7000 pF (Pins 17, 18)
= 150 pF
= 4.75 V to 5.25 V
= 0.6 V
+70 C, V
= 0 V
= 10 A (Figure 2)
in Regulation
Forced to V
Forced to V
Forced to V
CC
= 12 V, V
O
OUT
OUT
OUT
= 1 A
– 3%
IN
+ 3%
– 3%
= 5 V, unless otherwise noted)
Min Typ
1.283 1.3
1.980 2.0
3.465 3.5
125
2.0
20
1.8
–8
9
3.24 3.30
2.0
0.05
4.1
140
145
110
30
65
2
2.45
120
5
–5
500
15
275
2.2
0.8
2.4
500
0.35
10
1
Max
1.317
2.020
3.535
5.5
250
165
0.6
220
10
3.2
200
8
24
1
3.38
0.6
REV. A
Units
V
V
V
%
mA
mV
V
V
k
ns
%
%
%
k
mmho
V
V
kHz
V
V
V
A
A
A
A
s
s
A
A