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PDF RT9164A Data sheet ( Hoja de datos )
| Número de pieza | RT9164A | |
| Descripción | 1A Fixed and Adjustable Low Dropout Positive Voltage Regulators | |
| Fabricantes | Richtek | |
| Logotipo |  |
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RT9164A
1A Fixed and Adjustable Low Dropout Positive Voltage
Regulators
General Description
The RT9164A series of high performance positive voltage
Features
regulators is designed for applications requiring low dropout z Low Dropout Performance, 1.4V Max
performance at fully rated current.Additionally, the RT9164A z Full Current Rating Over Line and Temperature
series provides excellent regulation over variations in line
and load. Outstanding features include low dropout
z Fast Transient Response
z ±2% Output Voltage Accuracy
performance at rated current, fast transient response, z 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, and 3.5V Fixed
internal current-limiting, and thermal-shutdown protection
Adjustable Output Voltage
of the output device. The RT9164A series of three terminal z SOT-223, TO-252, and TO-263 Packages
regulators offers fixed and adjustable voltage options z RoHS Compliant and 100% Lead (Pb)-Free
available in space-saving SOT-223, TO-252, and TO-263
packages.
Applications
z Active SCSI Termination
Ordering Information
z Low Voltage Microcontrollers
RT9164A-
z Switching Power Supply Post-Regulator
Package Type
G : SOT-223
L: TO-252
LR : TO-252 (R-Type)
Pin ConFigurations
(TOP VIEW)
M : TO-263
Lead Plating System
3 VIN
P : Pb Free
G : Green (Halogen Free and Pb Free)
2 VOUT (TAB)
Note :
Output Voltage
Default : Adjustable
15 : 1.5V
18 : 1.8V
25 : 2.5V
28 : 2.85V
30 : 3.0V
33 : 3.3V
35 : 3.5V
1 ADJ/GND
SOT-223
3 VIN
2 VOUT (TAB)
1 ADJ/GND
TO-252
Richtek products are :
3 VOUT
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
2 ADJ/GND (TAB)
1 VIN
Marking Information
TO-252 (R-Type)
For marking information, contact our sales representative
directly or through a Richtek distributor located in your
area.
3 VIN
2 VOUT (TAB)
1 ADJ/GND
TO-263
DS9164A-15 April 2011
www.richtek.com
1
http://www.Datasheet4U.com
1 page  
RT9164A
Parameter
Output Voltage
(Note 5)
RT9164A -33
RT9164A -35
Symbol
Test Conditions
Min Typ Max Unit
IOUT = 10mA, VIN = 4.75V, TJ = 25°C 3.267 3.300 3.365
VOU T
10mA < IOUT< 1.0A, 4.75V < VIN < 10V 3.234 3.300 3.400
IOUT = 10mA, VIN= 5V, TJ = 25°C
3.465 3.500 3.570
V
10mA < IOUT < 1.0A, 5.0V < VIN < 10V 3.430 3.500 3.605
RT9164A
IOUT = 10mA,
1.5V ≤ VIN − V OUT ≤ 10V
-- 0.1 0.3 %
Line Regulation
(Note 5)
Load Regulation
(Note 5)
RT9164A -15
RT9164A -18
RT9164A -25
RT9164A -28
RT9164A -30
RT9164A -33
RT9164A -35
RT9164A
RT9164A -15
RT9164A -18
RT9164A -25
RT9164A -28
RT9164A -30
RT9164A -33
RT9164A -35
ΔVL INE
ΔVL OA D
Dropout Voltage (Note 6)
VDROP
Current Limit
Minimum Load Current RT9164A
IL IM
Quiescent Current RT9164A -XX IQ
Ripple Rejection
PSRR
IOUT = 10mA, 3.3V ≤ VIN ≤ 15V
--
IOUT = 10mA, 3.3V ≤ VIN ≤ 15V
--
IOUT = 10mA, 4.0V ≤ VIN ≤ 15V
IOUT = 10mA, 4.25V ≤ VIN ≤ 15V
IOUT = 10mA, 4.5V ≤ VIN ≤ 15V
--
--
--
IOUT = 10mA, 4.75V ≤ VIN ≤ 15V
--
IOUT = 10mA, 5.0V ≤ VIN ≤ 15V
--
(VIN − VOUT) = 3V, 10mA ≤ I OUT ≤ 1.0A
VIN = 3.3V, 10mA ≤ I OUT ≤ 1.0A
VIN = 3.3V, 10mA ≤ I OUT ≤ 1.0A
VIN = 4.0V, 10mA ≤ I OUT ≤ 1.0A
VIN = 4.25V, 10mA ≤ I OUT ≤ 1.0A
VIN = 4.5V, 10mA ≤ I OUT ≤ 1.0A
VIN = 4.75V, 10mA ≤ I OUT ≤ 1.0A
VIN = 5.0V, 10mA ≤ I OUT ≤ 1.0A
IOUT = 500mA
IOUT = 1.0A
VIN = 5V
(VIN − VOUT) = 2V
VIN = 5V
--
--
--
--
--
--
--
--
--
--
1.0
--
--
fRIPPLE = 120Hz ,
(VIN − VOUT) = 2V, VRIPPLE = 1VP-P
--
16
16
16
16
16
16
16
0.2 0.4
1 10
1 10
1 10
1 10
1 12
1 12
1 15
1.15 1.25
1.3 1.4
1.8 --
5 10
5 10
72 --
mV
%
mV
V
A
mA
dB
Adjust Pin Current
Adjust Pin Current Change
IADJ
ΔIAD J
10mA ≤ IOUT ≤ 1.0A, VIN = 5V
-- 65 120 μA
-- 0.2 5 μA
DS9164A-15 April 2011
www.richtek.com
5
http://www.Datasheet4U.com
5 Page 
VIN
RT9164A
VIN VOUT
RP Parasitic
Line Resistance
ADJ
R1
(Connect R1 to VOUT
or case)
R2 RL
Connect R2 to load
Figure 6. Best Load Regulation Using Adjustable
Output Regulator
Thermal Protection
RT9164A has thermal protection which limits junction
temperature to 150°C. However, device functionality is only
guaranteed to a maximum junction temperature of 125°C.
The power dissipation and junction temperature for RT9164A
are given by
PD = (VIN − VOUT) x IOUT
TJUNCTION = TAMBIENT + (PD x θJA)
Note: TJUNCTION must not exceed 125°C
Current Limit Protection
RT9164A is protected against overload conditions. Current
protection is triggered at typically 1.8A.
Thermal Consideration
The RT9164A series contain thermal limiting circuitry
designed to protect itself from over-temperature conditions.
Even for normal load conditions, maximum junction
temperature ratings must not be exceeded. As mention in
thermal protection section, we need to consider all sources
of thermal resistance between junction and ambient. It
includes junction-to-case, case-to-heat-sink interface, and
heat sink thermal resistance itself.
Junction-to-case thermal resistance is specified from the
IC junction to the bottom of the case directly below the
die. Proper mounting is required to ensure the best possible
thermal flow from this area of the package to the heat
sink. The case of all devices in this series is electrically
connected to the output. Therefore, if the case of the device
must be electrically isolated, a thermally conductive spacer
is recommended.
DS9164A-15 April 2011
RT9164A
www.richtek.com
11
http://www.Datasheet4U.com
11 Page | ||
| Páginas | Total 14 Páginas | |
| PDF Descargar | [ Datasheet RT9164A.PDF ] | |
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