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ADP2360 の電気的特性と機能
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ADP2360のメーカーはAnalog Devicesです、この部品の機能は「High Efficiency Buck Regulator」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 ADP2360 |
| 部品説明 High Efficiency Buck Regulator |
| メーカ Analog Devices |
ロゴ |
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Data Sheet
FEATURES
Input voltage supply range: 4.5 V to 60 V
Adjustable output voltage range: 0.8 V to VIN
Factory-programmable fixed output voltage options of
3.3 V and 5.0 V
Continuous output current up to 50 mA
Adjustable peak inductor current limit up to 140 mA
Pulse frequency modulation (PFM) control
Very high efficiency
90% at VIN = 9 V, VOUT = 3.3 V, IOUT = 10 mA
87% at VIN = 9 V, VOUT = 3.3 V, IOUT = 1 mA
Low shutdown current: <4 µA
Low quiescent current: 12 µA typical in sleep mode
100% duty cycle operation
Undervoltage lockout (UVLO)
No external compensation required
Enable input with precision thresholds
Programmable soft start
Power-good output
Thermal shutdown (TSD) protection
8-lead LFCSP package
APPLICATIONS
4 mA to 20 mA loop powered systems
HART modems
Building automation
Distributed power systems
Industrial control supplies
Other high VIN, low IOUT systems
50 mA, 60 V,
High Efficiency Buck Regulator
ADP2360
TYPICAL APPLICATION CIRCUIT
VIN
CIN
PG
ADP2360
8 VIN
SW 7
RPG
2 PG
ON
OFF
1 EN
5 SS
CSS PGND
6
FB 4
ITH 3
AGND
(EPAD)
9
L1
RITH
VOUT
COUT
Figure 1.
GENERAL DESCRIPTION
The ADP2360 is a high efficiency, high input voltage, discontinu-
ous conduction mode (DCM) synchronous, step-down, dc-to-dc
switching regulator. The ADP2360 operates with a wide input
voltage supply range from 4.5 V to 60 V and can source up to
50 mA continuous output current, making it ideal for regulating
power from a variety of voltage sources in space-constrained
applications. The ADP2360 is available with an adjustable output
(0.8 V to VIN) or in 3.3 V and 5.0 V factory-programmable fixed
output voltage models.
The ADP2360 uses a single-pulse PFM architecture with an
adjustable peak current level (IPEAK) control to minimize the
input and output ripple. The adjustable IPEAK current limit allows
Rev. 0
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the ADP2360 to optimize the efficiency for the application operat-
ing conditions and minimize the compatible inductor size.
The ADP2360 further offers a power-good (PG) pin to indicate
when the output voltage is good. Other key features include 100%
duty cycle operation, precision enable control, external soft start
control, UVLO, and TSD protection.
The ADP2360 requires no external compensation and the solution
for the fixed output voltage options requires a minimum of three
external components. The ADP2360 is available in a 3 mm × 3 mm,
8-lead LFCSP package with an operating junction temperature
range from −40°C to +125°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
©2016 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 Page
ADP2360
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
Overview...................................................................................... 10
Control Scheme .......................................................................... 10
REVISION HISTORY
5/2016—Revision 0: Initial Version
Data Sheet
Features........................................................................................ 11
Applications Information .............................................................. 12
Setting the Output Voltage........................................................ 12
Input Capacitor Selection.......................................................... 12
Estimating the Switching Frequency ....................................... 12
Setting the Peak Inductor Current........................................... 12
Inductor Selection ...................................................................... 13
Output Capacitor Selection....................................................... 13
Design Optimization ................................................................. 13
Recommended Components .................................................... 13
PCB Layout Considerations .......................................................... 14
Outline Dimensions ....................................................................... 15
Ordering Guide............................................................................... 15
Rev. 0 | Page 2 of 15
3Pages
Data Sheet
ABSOLUTE MAXIMUM RATINGS
Table 2.
Parameter
VIN, EN, PG, to AGND, PGND
FB to AGND, PGND
SW to AGND, PGND
ITH, SS to AGND, PGND
Operating Junction Temperature Range
Storage Temperature Range
Soldering Conditions
Rating
−0.3 V to +61 V
−0.3 V to +5.5 V
−0.3 V to VIN + 0.3 V
−0.3 V to +4 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.
ADP2360
THERMAL RESISTANCE
θJA is specified for the worst case conditions, that is, a device
soldered in a circuit board for surface-mount packages.
For additional information on thermal resistance, refer to
Application Note AN-000, Thermal Characteristics of IC
Assembly.
Table 3. Thermal Resistance
Package Type
θJA
8-Lead LFCSP
62.7
ΨJB
33.60
Unit
°C/W
θJA and ΨJB and are modeled using a standard 4-layer JEDEC printed
circuit board (PCB) (2S2P) with the exposed pad soldered to
the board with a 2 × 2 array of thermal vias and still air.
ESD CAUTION
Rev. 0 | Page 5 of 15
6 Page
合計 : 16 ページ |
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| 部品番号 | 部品説明 | メーカ |
| ADP2360 | High Efficiency Buck Regulator | Analog Devices |