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IRU1205 の電気的特性と機能

IRU1205のメーカーはInternational Rectifierです、この部品の機能は「300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS」です。


製品の詳細 ( Datasheet PDF )

部品番号 IRU1205
部品説明 300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS
メーカ International Rectifier
ロゴ International Rectifier ロゴ 




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IRU1205 Datasheet, IRU1205 PDF,ピン配置, 機能
Data Sheet No. PD94133
IRU1205
IRU1205-18 / IRU1205-25 / IRU1205-28
IRU1205-30 / IRU1205-33 / IRU1205-36
300mA ULTRA LOW DROPOUT POSITIVE
ADJUSTABLE AND FIXED REGULATORS
FEATURES
SOT-23 Package
Stable with 2.2mF Ceramic Capacitor
1% Voltage Reference Accuracy
Only 270mV Dropout at 300mA
and 170mV Dropout at 150mA
5mA Quiescent Current in Shutdown
Current Limit and Thermal Shutdown
Logic Input Enable Pin
APPLICATIONS
Laptop, Notebook & Palmtop computers
Battery Powered Equipments
PCMCIA Vcc & Vpp Regulator
Consumer Electronics
High Efficiency Linear Power Supplies
DESCRIPTION
The IRU1205 device is an efficient linear voltage regula-
tor with better than 1% initial voltage accuracy, very low
dropout voltage and very low ground current designed
especially for hand held, battery powered applications.
Other features of the device are: TTL compatible enable/
shutdown control input, current limiting and thermal shut-
down.
The IRU1205 is available in fixed and adjustable output
voltage versions in a small SOT-23 5-Pin package.
TYPICAL APPLICATION
VIN
C1
2.2uF
1 VIN
2 Gnd
VOUT 5
SD Enable
3 En
Adj 4
VOUT
( )R1
C2
Vo = 1.253
1+
R1
R2
2.2uF
R2
Figure 1 - Typical application of the IRU1205 ajustable voltage regulator.
3.3V
C1
2.2uF
1 VIN
VOUT 5
2 Gnd
C2
2.2uF
2.5V
SD Enable
3 En
CBYP 4
C3
1000pF
Figure 2 - Typical application of the IRU1205-25 fixed voltage regulator.
PACKAGE ORDER INFORMATION
TJ (°C)
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
0 To 125
5-PIN
SOT-23 (L5)
IRU1205CL
IRU1205-18CL
IRU1205-25CL
IRU1205-28CL
IRU1205-30CL
IRU1205-33CL
IRU1205-36CL
SOT-23
MARKING
AT00
AT18
AT25
AT28
AT30
AT33
AT36
OUTPUT
VOLTAGE
Adj
1.8V
2.5V
2.8V
3.0V
3.3V
3.6V
Rev. 2.3
07/16/02
www.irf.com
1

1 Page





IRU1205 pdf, ピン配列
IRU1205
IRU1205-18 / IRU1205-25 / IRU1205-28
IRU1205-30 / IRU1205-33 / IRU1205-36
Note 1: Low duty cycle pulse testing with Kelvin con-
nections is required in order to maintain accurate data.
Note 2: Dropout voltage is defined as the minimum dif-
ferential voltage between VIN and VOUT required to main-
tain regulation at VOUT. It is measured when the output
voltage drops 1% below its nominal value.
Note 3: Ground current is the regulator quiescent cur-
rent plus the pass transistor current. The total current
from the supply is the sum of the load current plus the
ground pin current.
Note 4: The specification applies for the junction tem-
perature of 0 to +1258C.
PIN DESCRIPTIONS
PIN #
1
PIN SYMBOL
VIN
PIN DESCRIPTION
The input pin of the regulator. Typically a large storage capacitor is connected from
this pin to ground to insure that the input voltage does not sag below the minimum
drop out voltage during the load transient response. This pin must always be higher
than VOUT by at least the amount of the dropout voltage and some margin in order for
the device to regulate properly.
2 Gnd Ground pin. This pin must be connected to the lowest potential in the system and all
other pins must be at higher potential with respect to this pin.
3 En Enable pin. A low signal or left open on this pin shuts down the output. This pin must
be tied HI or to VIN for normal operation.
4 Adj A resistor divider from this pin to the VOUT pin and ground sets the output voltage. To
(Adjustable Only) minimize the error due to the error amplifier, select the values of the resistor dividers
to be less than 10KV.
4 CBYP A 470 to 1000pF bypass capacitor connected to this pin reduces the output noise.
(Fixed Only)
5
VOUT
The output of the regulator. A minimum of 2.2mF with max ESR of 1V capacitor must
be connected from this pin to ground to insure stability.
5-PIN
SOT-23
IRU1205
IRU1205-18
IRU1205-25
IRU1205-28
IRU1205-30
IRU1205-33
IRU1205-36
Output
Voltage
1.25V
1.8V
2.5V
2.8V
3.0V
3.3V
3.6V
Table 1- Nominal output voltage vs. part number.
The output voltage of the adjustable device can be set
using:
( )Vo = 1.253
1+
R1
R2
Where:
R1 = Resistor connected from output to the Adj pin
R2 = Resistor connected from Adj pin to Gnd
Rev. 2.3
07/16/02
www.irf.com
3


3Pages


IRU1205 電子部品, 半導体
IRU1205
IRU1205-18 / IRU1205-25 / IRU1205-28
IRU1205-30 / IRU1205-33 / IRU1205-36
PACKAGE SHIPMENT METHOD
PKG
DESIG
L5
PACKAGE
DESCRIPTION
SOT-23
PIN
COUNT
5
PARTS
PER TUBE
---
PARTS
PER REEL
3000
T&R
Orientation
Fig A
11
1
Feed Direction
Figure A
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7903
Visit us at www.irf.com for sales contact information
Data and specifications subject to change without notice. 02/01
6 www.irf.com
Rev. 2.3
07/16/02

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
IRU1205

300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS

International Rectifier
International Rectifier
IRU1205-18

300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS

International Rectifier
International Rectifier
IRU1205-25

300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS

International Rectifier
International Rectifier
IRU1205-28

300mA ULTRA LOW DROPOUT POSITIVE ADJUSTABLE AND FIXED REGULATORS

International Rectifier
International Rectifier


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