LT1585ACT Linear Technology, LT1585ACT Datasheet - Page 11

• Manufacturer Part Number: LT1585ACT
• Description: IC LDO REG 5A ADJ TO220-3
• Manufacturer: Linear Technology

Specifications of LT1585ACT

• Regulator Topology: Positive Adjustable
• Voltage - Output: 1.25 ~ 5.5 V
• Voltage - Input: 2.45 ~ 7 V
• Voltage - Dropout (typical): 1.2V @ 5A
• Number Of Regulators: 1
• Current - Limit (min): 5A
• Operating Temperature: 0°C ~ 125°C
• Mounting Type: Through Hole
• Package / Case: TO-220-3 (Straight Leads)
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Output: -

TYPICAL APPLICATIONS
5V
+
SEE NOTE 5
C2 TO C4
220µF
10V
AVX TPS
3 EACH
Guaranteed LT1585A Circuit for the Intel 100MHz and Higher Frequency Pentium Processors
3
THERMALLOY
C1
0.1µF
IN
7021B-MT
LT1585A
ADJ
33pF
1
NPO
OUT
C5
3
4
Information furnished by Linear Technology Corporation is believed to be accurate and reliable.
However, no responsibility is assumed for its use. Linear Technology Corporation makes no represen-
tation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
V
R
COMP COL
SGND FGND
50mV/DIV
+
T
2
LT1431S
2A/DIV
2
5
U
V
I
(Meets Intel Specifications with Worst-Case Tolerances)
OUT
OUT
R1
1k
REF
R
1
6
M
N
R2
1k
8
7
LT1585A/LT1431 Transient Response
0.01µF
*TRANSIENT RESPONSE MEASURED WITH AN INTEL
POWER VALIDATOR. V
POWER VALIDATOR
C6
for 3.8A Load Current Step*
SEE NOTE 6
4
3
2
1
R3C
800Ω
R3B
1.35k
R3A
1.15k
R3D
83Ω
SEE NOTE 7
5
100µs/DIV
117Ω
SGND
PGND
R3E
OUT
R4
IS MEASURED AT THE
6
+
C7
100µF
10V
SENSE
V
OUT
PGND
LT1584 • TA06
LT1584A • TA06
LT1585A/LT1585A-3.3
+
NOTES: UNLESS OTHERWISE SPECIFIED
1. ALL RESISTOR VALUES ARE OHMS,
2. ALL CAPACITORS ARE 50V, 20%
3. ALL POLARIZED CAPACITORS ARE AVX
4. INPUT CAPACITANCE MAY BE REDUCED
5. FOR 100MHz PENTIUM PROCESSOR,
6. FOR PENTIUM VRE PROCESSOR,
7. R3A TO R3E ARE B.I. TECHNOLOGY 627V100
PLACE IN MICROPROCESSOR
1/8W, 5%
TYPE TPS OR EQUIVALENT
IF THE 5V SUPPLY IS WELL BYPASSED
INPUT VOLTAGE MUST BE AT LEAST
4.85V AT THE REGULATOR INPUT
R4 NOT INSTALLED
– FOR 3.3V OUTPUT, INSTALL 0Ω JUMPER
RESISTOR R4
C8 TO C13
100µF
10V
AVX TPS
6 EACH
SOCKET CAVITY
+
C14 TO C23
1µF
16V
AVX Y5V 0805
10 EACH
11
1585afa