LM1084R HTC [HTC Korea TAEJIN Technology Co.], LM1084R Datasheet

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LM1084R

Manufacturer Part Number
LM1084R
Description
5A L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed)
Manufacturer
HTC [HTC Korea TAEJIN Technology Co.]
Datasheet

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FEATURES
● Output Current of 5A
● Fast Transient Response
● 0.04% Line Regulation
● 0.2% Load Regulation
● Internal Thermal and Current Limiting
● Adjustable or Fixed Output Voltage(1.5V, 1.8V, 2.5V, 3.3V, 5.0V)
● Surface Mount Package TO-263 3LD and TO-252 3L
● 100% Thermal Limit Burn-in
● Low Dropout Voltage 1.5V at 5A Output Current
● Moisture Sensitivity Level 3
APPLICATIONS
● High Efficiency Linear Regulators / Power Supply
● High Efficiency "Green" Computer Systems
● Constant Current Regulators
● Portable Instrumentation
● SMPS Post-Regulator
● Adjustable Power Supplies
● Powering VGA & Sound Card
DESCRIPTION
The LM1084 series of positive adjustable and fixed regulators are designed to provide 5A with high efficient.
All internal circuitry is designed to operate down to 1.3V input to output differential.
On-chip trimming adjusts the reference voltage to 1%.
It's low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications.
Internal current and thermal limiting provides protection against any overload condition that would create
excessive junction temperature.
TEST & TYPICAL APPLICATION CIRCUIT
Note
(1) C1 needed if device is far away from filter capacitors.
(2) C2 minimum value required for stability.
Nov. 2010 - Rev. 1.3.
5A L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed)
LM1084-3.3V
- 1 -
V
V
REF
OUT
=V
= V
OUT
REF
-V
ORDERING INFORMATION
(X.X=VOUT=1.5V, 1.8V, 2.5V, 3.3V, 5.0V, ADJ)
x (1+RF2/RF1) + I
ADJ
1. ADJ / GND
* Heatsink surface connected to Pin 2.
LM1084R-X.X
LM1084RS-X.X
=1.25V(Typ.)
LM1084-ADJ
Device
TO-252 PKG
TO-263 PKG
ADJ
2. OUTPUT
x RF2
I
ADJ
=55㎂(Typ.)
TO-263 3LD
TO-252 3LD
Package
LM1084
3. INPUT
HTC

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LM1084R Summary of contents

Page 1

... Note (1) C1 needed if device is far away from filter capacitors. (2) C2 minimum value required for stability. Nov. 2010 - Rev. 1.3. TO-263 PKG TO-252 PKG 1. ADJ / GND * Heatsink surface connected to Pin 2. ORDERING INFORMATION Device LM1084R-X.X LM1084RS-X.X (X.X=VOUT=1.5V, 1.8V, 2.5V, 3.3V, 5.0V, ADJ) LM1084-ADJ =1.25V(Typ.) REF OUT ADJ V ...

Page 2

L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed) ABSOLUTE MAXIMUM RATINGS CHARACTERISTIC Supply Voltage Operating Junction Temperature Range Storage Temperature Range Thermal Resistance Junction to Case TO-263 Thermal Resistance Junction to Ambient TO-263 Lead Temperature (Soldering) 10 sec. Maximum Output Current ...

Page 3

L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed) TYPICAL PERFORMANCE CHARACTERISTICS Figure 1. Dropout Voltage vs Output Current Figure 3. Load Regulation vs. Output Current Figure 5. Adjust Pin Current vs Temperature Figure 2. Reference Voltage vs Temperature Figure 4. Minimum ...

Page 4

L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed) Figure 7. Ripple Rejection vs. Frequency (Adjustable Versions) APPLICATIONS INFORMATION Figure 8. Resistor Divider Scheme for the Adjustable Version Figure 9. Protection Diode Scheme for Fixed Output Regulators LM1084-ADJ LM1084- ...

Page 5

L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed) APPLICATION INFORMATION The LM1084 series of adjustable and fixed regulators are easy to use and have all the protection features expected in high performance voltage regulators : short circuit protection and thermal shut-down. ...

Page 6

L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed) RIPPLE REJECTION The ripple rejection values are measured with the adjustment pin bypassed. The impedance of the adjust pin capacitor at the ripple frequency should be less than the value of R1 (normally ...

Page 7

L.D.O. VOLTAGE REGULATOR (Adjustable & Fixed) THERMAL CONSIDERATIONS The LM1084 series have internal power and thermal limiting circuitry designed to protect the device under overload cinditions. However maximum junction temperature ratings should not be exceeded under continous normal load ...

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