LT1585ACT-3.3 Linear Technology, LT1585ACT-3.3 Datasheet

IC LDO REG 5A 3.3V TO220-3

LT1585ACT-3.3

Manufacturer Part Number
LT1585ACT-3.3
Description
IC LDO REG 5A 3.3V TO220-3
Manufacturer
Linear Technology
Datasheet

Specifications of LT1585ACT-3.3

Regulator Topology
Positive Fixed
Voltage - Output
3.3V
Voltage - Input
Up to 7V
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
-

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
LT1585ACT-3.3
Manufacturer:
LT
Quantity:
5 510
Part Number:
LT1585ACT-3.3
Manufacturer:
LT/凌特
Quantity:
20 000
Part Number:
LT1585ACT-3.3#PBF
Manufacturer:
LINEAR/凌特
Quantity:
20 000
FEATURES
TYPICAL APPLICATIO
APPLICATIO S
LT1585ACT
LT1585ACT-3.3
V
* REQUIRED FOR STABILITY
IN
Fast Transient Response
Guaranteed Dropout Voltage at Multiple Currents
Load Regulation: 0.05% Typ
Trimmed Current Limit
On-Chip Thermal Limiting
Standard 3-Pin TO-220 Power Package
Pentium
PowerPC
Other 2.5V to 3.6V Microprocessor Supplies
Low Voltage Logic Supplies
Battery-Powered Circuitry
Post Regulator for Switching Supply
NOTE: MICROPROCESSOR APPLICATIONS WITH LOAD TRANSIENTS OF 3.8A REQUIRE
OUTPUT DECOUPLING CAPACITANCE >1300µF ON FIXED VOLTAGE PARTS TO ACHIEVE
< 50mV OF DEVIATION FROM NOMINAL OUTPUT. CONSULT FACTORY FOR DETAILS
≥ 4.75V
®
TM
Processor Supplies
+
Supplies
C1
10µF
U
3.3V, 5A Regulator
LT1585A-3.3
U
Adjustable
3.3V Fixed
+
1585A TA01
C2*
100µF
3.3V
5A
DESCRIPTIO
Pentium is a registered trademark of Intel Corporation. PowerPC is a trademark of IBM Corporation.
The LT
regulators with 5A output current capability. Design has
been optimized for low voltage applications where tran-
sient response and minimum input voltage are critical.
Similar to the LT1084 family, these regulators feature
lower dropout voltage and faster transient response.
These improvements make them ideal for low voltage
microprocessor applications requiring a regulated 2.5V to
3.6V output with an input supply below 7V.
Current limit is trimmed to ensure specified output current
and controlled short-circuit current. On-chip thermal lim-
iting provides protection against any combination of over-
load that would create excessive junction temperatures.
The LT1585A/LT1585A-3.3 are available in the industry
standard 3-pin TO-220 power package.
, LTC and LT are registered trademarks of Linear Technology Corporation.
®
1585A/LT1585A-3.3 are low dropout 3-terminal
1.5
1.4
1.3
1.2
1.1
1.0
0.9
0.8
0.7
0.6
0.5
Adjustable and Fixed
Dropout Voltage vs Output Current
0
Positive Regulators
LT1585A/LT1585A-3.3
U
OUTPUT CURRENT (A)
5A Low Dropout
Fast Response
LT1585A TA02
I
FULL LOAD
1585afa
1

Related parts for LT1585ACT-3.3

LT1585ACT-3.3 Summary of contents

Page 1

... PowerPC Supplies ■ Other 2.5V to 3.6V Microprocessor Supplies ■ Low Voltage Logic Supplies ■ Battery-Powered Circuitry ■ Post Regulator for Switching Supply LT1585ACT LT1585ACT-3.3 U TYPICAL APPLICATIO 3.3V, 5A Regulator LT1585A-3.3 V ≥ 4.75V 10µF * REQUIRED FOR STABILITY NOTE: MICROPROCESSOR APPLICATIONS WITH LOAD TRANSIENTS OF 3.8A REQUIRE OUTPUT DECOUPLING CAPACITANCE > ...

Page 2

... OUT – ≤ 5.75V, 10mA ≤ I ≤ OUT OUT FULL LOAD – ≤ 5.75V IN OUT ORDER PART FRONT VIEW NUMBER LT1585ACT-3 OUT 1 GND T PACKAGE 3-LEAD PLASTIC TO-220 = 50°C/W, θ = 3°C/W θ 25°C. A MIN TYP MAX 1.238 (–1%) 1.250 1.262 (+1%) ● ...

Page 3

ELECTRICAL CHARACTERISTICS The ● denotes specificatons which apply over the specified temperature range, otherwise specifications are at T PARAMETER CONDITIONS Ripple Rejection LT1585A f = 120Hz OUT LT1585A-3 120Hz OUT Thermal LT1585A T = ...

Page 4

LT1585A/LT1585A-3 TYPICAL PERFORMANCE CHARACTERISTICS LT1585A Reference Voltage vs Temperature 1.275 1.270 1.265 1.260 1.255 1.250 1.245 1.240 1.235 1.230 1.225 –75 –50 – 100 125 150 TEMPERATURE (°C) LT1585A • TPC04 LT1585A Minimum Load ...

Page 5

PLIFIED SCHE ATIC V IN GND FOR FIXED VOLTAGE DEVICE U U APPLICATIONS INFORMATION General The LT1585A/LT1585A-3.3 3-terminal regulators are easy to use and have all the protection features expected in high performance linear regulators. The devices ...

Page 6

LT1585A/LT1585A-3 APPLICATIONS INFORMATION tor tolerance (sometimes ranging up to ±100%), equiva- lent series resistance, equivalent series inductance and capacitance temperature coefficient. The LT1585A/ LT1585A-3.3 frequency compensation optimizes fre- quency response with low ESR capacitors. In general, use capacitors ...

Page 7

U U APPLICATIONS INFORMATION A protection diode between the input and output pins is usually not needed. An internal diode between the input and output pins on the LT1585A/LT1585A-3.3 can handle microsecond surge currents of 50A to 100A. Even with ...

Page 8

LT1585A/LT1585A-3 APPLICATIONS INFORMATION Load Regulation It is not possible to provide true remote load sensing because the LT1585A/LT1585A-3.3 are 3-terminal de- vices. Load regulation is limited by the resistance of the wire connecting the regulators to the load. ...

Page 9

... Please con- sult “Mounting Considerations for Power Semiconduc tors” 1990 Linear Applications Handbook, Volume I , Pages RR3-1 to RR3-20. The output connects to the case of both the LT1585A and the LT1585A-3.3. For example, using an LT1585ACT-3.3 (TO-220, com- mercial) and assuming: V (Max Continuous) = 5.25V (5V + 5%), ...

Page 10

... AVX TPS 3 EACH V 50mV/DIV 2A/DIV 10 N Minimum Parts Count LT1585A Adjustable Circuit for the Intel 120MHz Pentium Processor THERMALLOY PLACE IN MICROPROCESSOR 7020B-MT IN OUT + LT1585ACT + C10 110Ω 100µF 10V ADJ 0.1% 10V AVX TPS C4 6 EACH R2 330nF 197Ω ...

Page 11

... I 2A/DIV 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. N (Meets Intel Specifications with Worst-Case Tolerances) ...

Page 12

... I DO OUT “A” Version Stable with Ceramic Capacitors = –1.21V 0.34V 30µA, DO OUT Q , RMS LT/TP 0804 1K REV A • PRINTED IN USA © LINEAR TECHNOLOGY CORPORATION 1995 < 16µA, SD < 1µA, SD < 1µA, SD < 1µA, SD < 1µA, , < 1µA, SD < 1µA, SD < 1µA, ...

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