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ADP5073 の電気的特性と機能
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ADP5073のメーカーはAnalog Devicesです、この部品の機能は「DC-to-DC Inverting Regulator」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 ADP5073 |
| 部品説明 DC-to-DC Inverting Regulator |
| メーカ Analog Devices |
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Data Sheet
1.2 A, DC-to-DC Inverting Regulator
ADP5073
FEATURES
Wide input voltage range: 2.85 V to 15 V
Adjustable negative output to VIN − 39 V
Integrated 1.2 A main switch
1.2 MHz/2.4 MHz switching frequency with optional external
frequency synchronization from 1.0 MHz to 2.6 MHz
Resistor programmable soft start timer
Slew rate control for lower system noise
Precision enable control
Power-good output
UVLO, OCP, OVP, and TSD protection
3 mm × 3 mm, 16-lead LFCSP
−40°C to +125°C junction temperature
Supported by the ADIsimPower tool set
APPLICATIONS
Bipolar amplifiers, ADCs, digital-to-analog converters
(DACs), and multiplexers
High speed converters
Radio frequency (RF) power amplifier (PA) bias
Optical modules
TYPICAL APPLICATION CIRCUIT
VIN
CIN
ON
OFF
CVREG
AVIN
PVIN
VREF
ADP5073 FB
EN
VREG
SW
RPG
SS
PWRGD
CC
PWRGD
SLEW
COMP SYNC/FREQ
RC GND
CVREF
RFB
RFT
D1
L1
VOUT
COUT
Figure 1.
GENERAL DESCRIPTION
The ADP5073 is a high performance dc-to-dc inverting regulator
used to generate negative supply rails.
The input voltage range of 2.85 V to 15 V supports a wide variety of
applications. The integrated main switch enables the generation of
an adjustable negative output voltage down to 39 V below the
input voltage.
The ADP5073 operates at a pin selected 1.2 MHz/2.4 MHz
switching frequency. The ADP5073 can synchronize with an
external oscillator from 1.0 MHz to 2.6 MHz to ease noise
filtering in sensitive applications. The regulator implements
programmable slew rate control circuitry for the MOSFET
driver stage to reduce electromagnetic interference (EMI).
The ADP5073 includes a fixed internal or resistor programmable
soft start timer to prevent inrush current at power-up. During
shutdown, the regulator completely disconnects the load from the
input supply to provide a true shutdown. A power-good pin is
available to indicate the output is stable.
Other key safety features in the ADP5073 include overcurrent
protection (OCP), overvoltage protection (OVP), thermal
shutdown (TSD), and input undervoltage lockout (UVLO).
The ADP5073 is available in a 16-lead LFCSP and is rated for a
−40°C to +125°C operating junction temperature range.
Table 1. Related Devices
Device
Boost
Switch (A)
ADP5070 1.0
Inverter
Switch (A)
0.6
ADP5071 2.0
1.2
ADP5073
ADP5074
ADP5075
Not
applicable
Not
applicable
Not
applicable
1.2
2.4
0.8
Package
20-lead LFCSP (4 mm ×
4 mm) and TSSOP
20-lead LFCSP (4 mm ×
4 mm) and TSSOP
16-lead LFCSP (3 mm ×
3 mm)
16-lead LFCSP (3 mm ×
3 mm)
12-ball WLCSP
(1.61 mm × 2.18 mm)
Rev. 0
Document Feedback
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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.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2015 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 Page
ADP5073
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Typical Application Circuit ............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Thermal Resistance ...................................................................... 5
ESD Caution.................................................................................. 5
Pin Configuration and Function Descriptions............................. 6
Typical Performance Characteristics ............................................. 7
Theory of Operation ...................................................................... 10
PWM Mode................................................................................. 10
Skip Mode.................................................................................... 10
Undervoltage Lockout (UVLO) ............................................... 10
Oscillator and Synchronization ................................................ 10
REVISION HISTORY
10/15—Revision 0: Initial Version
Data Sheet
Internal Regulators..................................................................... 10
Precision Enabling...................................................................... 11
Soft Start ...................................................................................... 11
Slew Rate Control....................................................................... 11
Current-Limit Protection ............................................................ 11
Overvoltage Protection.............................................................. 11
Power Good ................................................................................ 11
Thermal Shutdown .................................................................... 11
Applications Information .............................................................. 12
ADIsimPower Design Tool ....................................................... 12
Component Selection ................................................................ 12
Common Applications .............................................................. 15
Layout Considerations............................................................... 16
Outline Dimensions ....................................................................... 17
Ordering Guide .......................................................................... 17
Rev. 0 | Page 2 of 17
3Pages
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 3.
Parameter
PVIN, AVIN
SW
GND
VREG
EN, FB, SYNC/FREQ, PWRGD
COMP, SLEW, SS, VREF
Operating Junction
Temperature Range
Storage Temperature
Range
Soldering Conditions
Rating
−0.3 V to +18 V
PVIN − 40 V to PVIN + 0.3 V
−0.3 V to +0.3 V
−0.3 V to lower of AVIN + 0.3 V or +6 V
−0.3 V to +6 V
−0.3 V to VREG + 0.3 V
−40°C to +125°C
−65°C to +150°C
JEDEC J-STD-020
Stresses at or above those listed under Absolute Maximum
Ratings may cause permanent damage to the product. This is a
stress rating only; functional operation of the product at these
or any other conditions above those indicated in the operational
section of this specification is not implied. Operation beyond
the maximum operating conditions for extended periods may
affect product reliability.
ADP5073
THERMAL RESISTANCE
θJA and ΨJT are based on a 4-layer printed circuit board (PCB)
(two signals and two power planes) with thermal vias connecting
the exposed pad to a ground plane as recommended in the
Layout Considerations section. θJC is measured at the top of the
package and is independent of the PCB. The ΨJT value is more
appropriate for calculating junction to case temperature in the
application.
Table 4. Thermal Resistance
Package Type
θJA
16-Lead LFCSP
75.01
θJC ΨJT
55.79 0.95
Unit
°C/W
ESD CAUTION
Rev. 0 | Page 5 of 17
6 Page
合計 : 18 ページ |
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| 部品番号 | 部品説明 | メーカ |
| ADP5070 | DC-to-DC Switching Regulator | Analog Devices |
| ADP5071 | DC-to-DC Switching Regulator | Analog Devices |
| ADP5073 | DC-to-DC Inverting Regulator | Analog Devices |
| ADP5074 | DC-to-DC Inverting Regulator | Analog Devices |