Datasheet ADP1752, ADP1753 (Analog Devices)
| 制造商 | Analog Devices |
| 描述 | 800mA Low-Vin, Adjustable-Vout LDO Regulator |
| 页数 / 页 | 20 / 1 — 0.8 A, Low VIN, Low Dropout. Linear Regulator. Data Sheet. ADP1752/. … |
| 修订版 | H |
| 文件格式/大小 | PDF / 1.4 Mb |
| 文件语言 | 英语 |
0.8 A, Low VIN, Low Dropout. Linear Regulator. Data Sheet. ADP1752/. ADP1753. FEATURES. TYPICAL APPLICATION CIRCUITS
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0.8 A, Low VIN, Low Dropout Linear Regulator Data Sheet ADP1752/ ADP1753 FEATURES TYPICAL APPLICATION CIRCUITS Maximum output current: 0.8 A VIN = 1.8V VOUT = 1.5V Input voltage range: 1.6 V to 3.6 V 4.7µF 4.7µF Low shutdown current: <2 µA 16 15 14 13 Very low dropout voltage: 70 mV at 0.8 A load VIN VIN VOUT VOUT Initial accuracy: ±1% 1 VIN VOUT 12 Accuracy over line, load, and temperature: ±2% ADP1752 100kΩ 2 VIN VOUT 11 TOP VIEW 7 fixed output voltage options with soft start (Not to Scale) 0.75 V to 2.5 V (ADP1752) 3 VIN VOUT 10 PG Adjustable output voltage option with soft start 4 EN SENSE 9 0.75 V to 3.3 V (ADP1753) PG GND SS NC High PSRR 5 6 7 8 65 dB at 1 kHz 10nF
001
65 dB at 10 kHz
07718-
54 dB at 100 kHz
Figure 1. ADP1752 with Fixed Output Voltage, 1.5 V
23 μV rms at 0.75 V output V Stable with small 4.7 µF ceramic output capacitor IN = 1.8V VOUT = 0.5V(1 + R1/R2) Excellent load and line transient response 4.7µF 4.7µF Current-limit and thermal overload protection 16 15 14 13 VIN VIN VOUT VOUT Power-good indicator 1 VIN VOUT 12 Logic-controlled enable ADP1753 Reverse current protection 100kΩ 2 VIN VOUT 11 TOP VIEW (Not to Scale) APPLICATIONS 3 VIN VOUT 10 R1 PG 4 EN ADJ 9 Server computers PG GND SS NC R2 Memory components 5 6 7 8 Telecommunications equipment 10nF Network equipment
002
DSP/FPGA/microprocessor supplies
07718- Figure 2. ADP1753 with Adjustable Output Voltage, 0.75 V to 3.3 V
Instrumentation equipment/data acquisition systems GENERAL DESCRIPTION
The ADP1752/ADP1753 are low dropout (LDO) CMOS linear voltages that range from 0.75 V to 3.3 V via an external divider. regulators that operate from 1.6 V to 3.6 V and provide up to The ADP1752/ADP1753 al ow an external soft start capacitor 800 mA of output current. These low VIN/VOUT LDOs are ideal to be connected to program the startup. A digital power-good for regulation of nanometer FPGA geometries operating from output al ows power system monitors to check the health of the 2.5 V down to 1.8 V I/O rails, and for powering core voltages output voltage. down to 0.75 V. Using an advanced proprietary architecture, The ADP1752/ADP1753 are available in a 16-lead, 4 mm × 4 mm they provide high power supply rejection ratio (PSRR) and low LFCSP, making them not only very compact solutions, but also noise, and achieve excellent line and load transient response providing excellent thermal performance for applications that with only a small 4.7 µF ceramic output capacitor. require up to 800 mA of output current in a small, low profile The ADP1752 is available in seven fixed output voltage options. footprint. The ADP1753 is the adjustable version, which allows output
Rev. H 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2008–2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUITS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION SOFT START FUNCTION (ADP1752/ADP1753) ADJUSTABLE OUTPUT VOLTAGE (ADP1753) ENABLE FEATURE POWER-GOOD FEATURE REVERSE CURRENT PROTECTION FEATURE APPLICATIONS INFORMATION CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties UNDERVOLTAGE LOCKOUT CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE
001
65 dB at 10 kHz
07718-
54 dB at 100 kHz
Figure 1. ADP1752 with Fixed Output Voltage, 1.5 V
23 μV rms at 0.75 V output V Stable with small 4.7 µF ceramic output capacitor IN = 1.8V VOUT = 0.5V(1 + R1/R2) Excellent load and line transient response 4.7µF 4.7µF Current-limit and thermal overload protection 16 15 14 13 VIN VIN VOUT VOUT Power-good indicator 1 VIN VOUT 12 Logic-controlled enable ADP1753 Reverse current protection 100kΩ 2 VIN VOUT 11 TOP VIEW (Not to Scale) APPLICATIONS 3 VIN VOUT 10 R1 PG 4 EN ADJ 9 Server computers PG GND SS NC R2 Memory components 5 6 7 8 Telecommunications equipment 10nF Network equipment
002
DSP/FPGA/microprocessor supplies
07718- Figure 2. ADP1753 with Adjustable Output Voltage, 0.75 V to 3.3 V
Instrumentation equipment/data acquisition systems GENERAL DESCRIPTION
The ADP1752/ADP1753 are low dropout (LDO) CMOS linear voltages that range from 0.75 V to 3.3 V via an external divider. regulators that operate from 1.6 V to 3.6 V and provide up to The ADP1752/ADP1753 al ow an external soft start capacitor 800 mA of output current. These low VIN/VOUT LDOs are ideal to be connected to program the startup. A digital power-good for regulation of nanometer FPGA geometries operating from output al ows power system monitors to check the health of the 2.5 V down to 1.8 V I/O rails, and for powering core voltages output voltage. down to 0.75 V. Using an advanced proprietary architecture, The ADP1752/ADP1753 are available in a 16-lead, 4 mm × 4 mm they provide high power supply rejection ratio (PSRR) and low LFCSP, making them not only very compact solutions, but also noise, and achieve excellent line and load transient response providing excellent thermal performance for applications that with only a small 4.7 µF ceramic output capacitor. require up to 800 mA of output current in a small, low profile The ADP1752 is available in seven fixed output voltage options. footprint. The ADP1753 is the adjustable version, which allows output
Rev. H 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 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 ©2008–2015 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com
Document Outline FEATURES APPLICATIONS TYPICAL APPLICATION CIRCUITS GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS INPUT AND OUTPUT CAPACITOR, RECOMMENDED SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS THERMAL DATA THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS THEORY OF OPERATION SOFT START FUNCTION (ADP1752/ADP1753) ADJUSTABLE OUTPUT VOLTAGE (ADP1753) ENABLE FEATURE POWER-GOOD FEATURE REVERSE CURRENT PROTECTION FEATURE APPLICATIONS INFORMATION CAPACITOR SELECTION Output Capacitor Input Bypass Capacitor Input and Output Capacitor Properties UNDERVOLTAGE LOCKOUT CURRENT-LIMIT AND THERMAL OVERLOAD PROTECTION THERMAL CONSIDERATIONS PCB LAYOUT CONSIDERATIONS OUTLINE DIMENSIONS ORDERING GUIDE