Datasheet.kr   

ADP1755 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 ADP1755
기능 Low Dropout Linear Regulator
제조업체 Analog Devices
로고 Analog Devices 로고 


전체 20 페이지

		

No Preview Available !

ADP1755 데이터시트, 핀배열, 회로
Data Sheet
FEATURES
Maximum output current: 1.2 A
Input voltage range: 1.6 V to 3.6 V
Low shutdown current: <2 µA
Very low dropout voltage: 105 mV at 1.2 A load
Initial accuracy: ±1%
Accuracy over line, load, and temperature: ±2%
7 fixed output voltage options with soft start
0.75 V to 2.5 V (ADP1754)
Adjustable output voltage option with soft start
0.75 V to 3.3 V (ADP1755)
High PSRR
65 dB at 1 kHz
65 dB at 10 kHz
54 dB at 100 kHz
23 μV rms at 0.75 V output
Stable with small 4.7 µF ceramic output capacitor
Excellent load and line transient response
Current-limit and thermal overload protection
Power-good indicator
Logic-controlled enable
Reverse current protection
APPLICATIONS
Server computers
Memory components
Telecommunications equipment
Network equipment
DSP/FPGA/microprocessor supplies
Instrumentation equipment/data acquisition systems
GENERAL DESCRIPTION
The ADP1754/ADP1755 are low dropout (LDO) CMOS linear
regulators that operate from 1.6 V to 3.6 V and provide up to
1.2 A of output current. These low VIN/VOUT LDOs are ideal for
regulation of nanometer FPGA geometries operating from 2.5 V
down to 1.8 V I/O rails, and for powering core voltages down to
0.75 V. Using an advanced proprietary architecture, the ADP1754/
ADP1755 provide high power supply rejection ratio (PSRR) and
low noise, and achieve excellent line and load transient response
with only a small 4.7 µF ceramic output capacitor.
The ADP1754 is available in seven fixed output voltage options.
The ADP1755 is the adjustable version, which allows output
1.2 A, Low VIN, Low Dropout
Linear Regulator
ADP1754/ADP1755
TYPICAL APPLICATION CIRCUITS
VIN = 1.8V
VOUT = 1.5V
4.7µF
100kΩ
PG
16 15 14 13
VIN VIN VOUT VOUT
1 VIN
VOUT 12
2 VIN
3 VIN
ADP1754 VOUT 11
TOP VIEW
(Not to Scale) VOUT 10
4 EN
SENSE 9
PG GND SS NC
5678
10nF
4.7µF
VIN = 1.8V
Figure 1. ADP1754 with Fixed Output Voltage, 1.5 V
VOUT = 0.5V(1 + R1/R2)
4.7µF
100kΩ
PG
16 15 14 13
VIN VIN VOUT VOUT
1 VIN
VOUT 12
2 VIN
3 VIN
ADP1755 VOUT 11
TOP VIEW
(Not to Scale) VOUT 10
4 EN
ADJ 9
PG GND SS NC
5678
10nF
4.7µF
R1
R2
Figure 2. ADP1755 with Adjustable Output Voltage, 0.75 V to 3.3 V
voltages that range from 0.75 V to 3.3 V via an external divider.
The ADP1754/ADP1755 allow an external soft start capacitor
to be connected to program the startup. A digital power-good
output allows power system monitors to check the health of the
output voltage.
The ADP1754/ADP1755 are available in a 16-lead, 4 mm × 4 mm
LFCSP, making them not only very compact solutions, but also
providing excellent thermal performance for applications that
require up to 1.2 A of output current in a small, low profile
footprint.
Rev. G
Document Feedback
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2008–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com




ADP1755 pdf, 반도체, 판매, 대치품
ADP1754/ADP1755
Data Sheet
Parameter
OUTPUT NOISE
POWER SUPPLY REJECTION RATIO
Symbol
OUTNOISE
PSRR
Test Conditions/Comments
10 Hz to 100 kHz, VOUT = 0.75 V
10 Hz to 100 kHz, VOUT = 2.5 V
VIN = VOUT + 1 V, IOUT = 10 mA
1 kHz, VOUT = 0.75 V
1 kHz, VOUT = 2.5 V
10 kHz, VOUT = 0.75 V
10 kHz, VOUT = 2.5 V
100 kHz, VOUT = 0.75 V
100 kHz, VOUT = 2.5 V
Min Typ Max Unit
23 µV rms
65 µV rms
65 dB
56 dB
65 dB
56 dB
54 dB
51 dB
1 Minimum output load current is 500 μA.
2 Accuracy when VOUT is connected directly to ADJ. When VOUT voltage is set by external feedback resistors, absolute accuracy in adjust mode depends on the
tolerances of resistors used.
3 Based on an end-point calculation using 10 mA and 1.2 A loads. See Figure 6 for typical load regulation performance.
4 Dropout voltage is defined as the input to output voltage differential when the input voltage is set to the nominal output voltage. This applies only to output voltages
above 1.6 V.
5 Start-up time is defined as the time between the rising edge of EN to VOUT being at 95% of its nominal value.
6 Current-limit threshold is defined as the current at which the output voltage drops to 90% of the specified typical value. For example, the current limit for a 1.0 V
output voltage is defined as the current that causes the output voltage to drop to 90% of 1.0 V, or 0.9 V.
INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS
Table 2.
Parameter
MINIMUM INPUT AND OUTPUT CAPACITANCE1
CAPACITOR ESR
Symbol
CMIN
RESR
Test Conditions/Comments
TA = −40°C to +125°C
TA = −40°C to +125°C
Min Typ Max Unit
3.3 µF
0.001
0.1 Ω
1 The minimum input and output capacitance should be greater than 3.3 µF over the full range of operating conditions. The full range of operating conditions in the
application must be considered during device selection to ensure that the minimum capacitance specification is met. X7R and X5R type capacitors are recommended;
Y5V and Z5U capacitors are not recommended for use with this LDO.
Rev. G | Page 4 of 20

4페이지










ADP1755 전자부품, 판매, 대치품
Data Sheet
ADP1754/ADP1755
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 1.9 V, VOUT = 1.5 V, IOUT = 10 mA, CIN = 4.7 µF, COUT = 4.7 µF, TA = 25°C, unless otherwise noted.
1.520
1.515
1.510
1.505
LOAD = 10mA
LOAD = 100mA
LOAD = 400mA
LOAD = 800mA
LOAD = 1.2A
1200
1000
800
LOAD = 1.2A
LOAD = 800mA
LOAD = 400mA
1.500
600
1.495
1.490
1.485
LOAD = 100mA
400
LOAD = 10mA
200
1.480
–40
–5 25 85
JUNCTION TEMPERATURE (°C)
125
Figure 5. Output Voltage vs. Junction Temperature
0
–40
–5 25 85
JUNCTION TEMPERATURE (°C)
125
Figure 8. Ground Current vs. Junction Temperature
1.520
1.515
1.510
1.505
1.500
1.495
1.490
1.485
1.480
10
100 1k
LOAD CURRENT (mA)
Figure 6. Output Voltage vs. Load Current
10k
1.520
1.515
1.510
LOAD = 10mA
LOAD = 100mA
LOAD = 400mA
LOAD = 800mA
LOAD = 1.2A
1.505
1.500
1.495
1.490
1.485
1.480
1.8
2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
INPUT VOLTAGE (V)
Figure 7. Output Voltage vs. Input Voltage
3.6
1200
1000
800
600
400
200
0
10 100 1k
LOAD CURRENT (mA)
Figure 9. Ground Current vs. Load Current
10k
1200
1000
800
600
LOAD = 1.2A
LOAD = 800mA
LOAD = 400mA
400 LOAD = 100mA
200 LOAD = 10mA
0
1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6
INPUT VOLTAGE (V)
Figure 10. Ground Current vs. Input Voltage
Rev. G | Page 7 of 20

7페이지



구       성총 20 페이지
다운로드[ ADP1755.PDF 데이터시트 ]
구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

전력 반도체 판매 ( IGBT, TR 모듈, SCR, 다이오드 모듈 )

휴대전화 : 010-3582-2743


상호 : 아이지 인터내셔날

전화번호 : 051-319-2877, [ 홈페이지 ]



링크공유

링크 :

관련 데이터시트

부품번호상세설명 및 기능제조사
ADP1752

(ADP1752 / ADP1753) 800mA Low-Vin LDO Regulator

Analog Devices
Analog Devices
ADP1753

(ADP1752 / ADP1753) 800mA Low-Vin LDO Regulator

Analog Devices
Analog Devices

추천 데이터시트

부품번호상세설명 및 기능제조사
CQ1565RT

FSCQ1565RT, Green Mode Fairchild Power Switch. In general, a Quasi-Resonant Converter (QRC) shows lower EMI and higher power conversion efficiency compared to conventional hard-switched converter with a fixed switching frequency.

Fairchild
Fairchild
KF16N25D

MOSFET의 기능은 N Channel MOS Field effect transistor입니다. This planar stripe MOSFET has better characteristics, such as fast switching time, low on resistance, low gate charge and excellent avalanche characteristics. It is mainly suitable for DC/DC Converters and switching mode power supplies.( Vdss=250V, Id=13A )

KEC
KEC

DataSheet.kr    |   2018   |  연락처   |  링크모음   |   검색  |   사이트맵