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RT9177-32CBRのメーカーはETCです、この部品の機能は「Ultra-Low-Noise 200mA LDO Regulator」です。 |
部品番号 | RT9177-32CBR |
| |
部品説明 | Ultra-Low-Noise 200mA LDO Regulator | ||
メーカ | ETC | ||
ロゴ | |||
このページの下部にプレビューとRT9177-32CBRダウンロード(pdfファイル)リンクがあります。 Total 12 pages
Preliminary
RT9177
Ultra-Low-Noise 200mA LDO Regulator
General Description
The RT9177 is a 200mA low dropout and low noise
micro-power regulator suitable for portable RF
applications. The output voltage accuracy within
±2% and range from 2.4V to 3.2V in 100mV
increments could be selected. It is designed for
using very low ESR output capacitor. Its output
remains stable even in using 1µF ceramic as its
output capacitor.
Using an internal PMOS as the pass device cause
that don’t need extra GND current in heavy load and
dropout conditions. In shutdown mode, nearly zero
operation current cause the IC is suitable for
battery-power devices. Other features including
current limiting, over temperature protection and
adding a capacitor in bypass pin to improve its noise
performance are functional.
Ordering Information
RT9177-
Package type
B : SOT-25 Type I
BR : SOT-25 Type II
Operating temperature range
C: Commercial standard
Output voltage
24 : 2.4V
25 : 2.5V
:
:
31 : 3.1V
32 : 3.2V
Features
z Ultra-Low-Noise(150nV/ Hz ) for RF Application
z 1µF Ceramic COUT Stable
z Low Dropout Voltage(220mV @ 200mA)
z Low Operation Current - 80µA Typical
z Shutdown Function
z Low Temperature Coefficient
z Current and Thermal Limiting
z Custom Voltage Available
z SOT-25 Package
Applications
z Cellular Telephones
z Laptop, Notebook, and Palmtop Computers
z Battery-powered Equipment
z Hand-held Equipment
Pin Configurations
Part Number
Pin Configurations
RT9177-
CB
(Plastic SOT-25)
54
TOP VIEW
1 23
1. IN
2. GND
3. SHDN
4. BP
5. OUT
RT9177-
CBR
(Plastic SOT-25)
54
TOP VIEW
1 23
1. OUT
2. GND
3. IN
4. SHDN
5. BP
Typical Application Circuit
VIN
CIN
1µF
ON
OFF
RT9177
IN OUT
GND
SHDN
COUT
1µF
VOU T
CBP
10nF
DS9177-00 Feb. 2001
www.richtek-ic.com.tw
1
1 Page Preliminary
RT9177
Absolute Maximum Ratings
z Input Voltage VIN
z Power Dissipation
SOT-25
z Operating Junction Temperature Range
z Storage Temperature Range
z Thermal Resistance
RθJA
z Lead Temperature
(Soldering 5 sec.)
7V
0.25W
−40°C to 125°C
−65°C to 150°C
250°C/W
260°C
Electrical Characteristics
(VIN = 5.0V, CIN = 1µF, COUT = 1µF, TA = 25°C, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Units
Input Voltage
VIN
2.5 --
6
V
Output Voltage Accuracy
∆VOUT IL = 1mA
-2 -- +2
%
Maximum Output Current
IMAX
200 -- --
mA
Current Limit
ILIMIT RLOAD = 1 Ohm
-- 300 --
mA
GND Pin Current
No Load
IG IOUT = 200mA
-- 80 150
-- 90 150
µA
Dropout Voltage (Note)
(VOUT(Nominal)≥3.0V Version)
VDROP
IOUT = 1mA
IOUT = 50mA
IOUT = 200mA
-- 1.1 5
-- 55 100
-- 220 300
mV
Line Regulation
∆VLINE VIN = (VOUT+0.15) to 6V, IOUT = 1mA -0.2 -- +0.2 %/V
Load Regulation
∆VLOAD IOUT = 0mA to 200mA
-- 0.01 0.04 %/mA
SHDN Input High Threshold
VIH VIN = 3V to 5.5V
1.0 -- --
V
SHDN Input Low Threshold
VIL VIN = 3V to 5.5V
-- -- 0.4
V
SHDN Bias Current
ISD
-- -- 100 nA
Shutdown Supply Current
IGSD
VOUT = 0V
-- 0.01 1
µA
Thermal Shutdown Temperature TSD
-- 150 --
°C
Output Noise
eno CBP = 10nF, COUT = 10µF
-- 150 -- nV/ Hz
Ripple Rejection
PSRR F = 100Hz, CBP = 10nF, COUT = 10µF -- 68 --
dB
Notes: Dropout voltage definition: VIN - VOUT when VOUT is 50 mV below the value of VOUT at VIN = VOUT + 0.5V
DS9177-00 Feb. 2001
www.richtek-ic.com.tw
3
3Pages RT9177
Preliminary
4
3
2
1
0
-1
-2
-10
Load Transitne Response
from 1mA to 100mA
100mA Load
1mA Load
CIN = 1µF
COUT = 1µF
VIN = 5V
TA = 25°C
10 30 50 70 90
Time (uS)
4
3
2
1
0
-1
-2
-10
Load Transitne Response
from 100mA to 1mA
100mA Load
1mA Load
CIN = 1µF
COUT = 1µF
VIN = 5V
TA = 25°C
10 30 50 70 90
Time (uS)
www.richtek-ic.com.tw
6
DS9177-00 Feb. 2001
6 Page | |||
ページ | 合計 : 12 ページ | ||
|
PDF ダウンロード | [ RT9177-32CBR データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
RT9177-32CB | Ultra-Low-Noise 200mA LDO Regulator | ETC |
RT9177-32CBR | Ultra-Low-Noise 200mA LDO Regulator | ETC |