|
|
PDF ADP1614 Data sheet ( Hoja de datos )
| Número de pieza | ADP1614 | |
| Descripción | DC-to-DC Switching Converter | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ADP1614 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
Data Sheet
650 kHz/1.3 MHz, 4 A, Step-Up,
PWM, DC-to-DC Switching Converter
ADP1614
FEATURES
Adjustable and fixed current-limit options
Adjustable up to 4 A
Fixed 3 A
2.5 V to 5.5 V input voltage range
650 kHz or 1.3 MHz fixed frequency option
Adjustable output voltage, up to 20 V
Adjustable soft start
Undervoltage lockout
Thermal shutdown
3 mm × 3 mm, 10-lead LFCSP
Supported by ADIsimPower design tool
APPLICATIONS
TFT LCD bias supplies
Portable applications
Industrial/instrumentation equipment
GENERAL DESCRIPTION
The ADP1614 is a step-up, dc-to-dc switching converter with
an integrated power switch capable of providing an output voltage
as high as 20 V. The ADP1614 is available with a pin-adjustable
current limit that is set via an external resistor with the boost
switching frequency fixed to either 650 kHz or 1.3 MHz.
Alternatively, the ADP1614 is also available with fixed 3 A
current limit and a pin-selectable frequency. With a package
height of 0.8 mm, the ADP1614 is optimal for space constrained
applications, such as portable devices or thin film transistor
(TFT) liquid crystal displays (LCDs).
The ADP1614 operates in current-mode pulse-width modulation
(PWM) with up to 94% efficiency. Adjustable soft start prevents
inrush currents when the part is enabled. The PWM current-mode
architecture allows excellent transient response, easy noise filtering,
and the use of small, cost-saving external inductors and capacitors.
Other key features include undervoltage lockout (UVLO), thermal
shutdown (TSD), and logic controlled enable.
The ADP1614 is available in a Pb-free, 10-lead lead frame chip
scale package (LFCSP).
TYPICAL APPLICATIONS CIRCUITS
L1
ADP1614
ADJUSTABLE
VIN CURRENT
8 VIN LIMIT SW 6
ON
OFF
3 EN
CIN
SW 7
FB 2
9 CLRES
RCL CSS
10 SS
COMP 1
GND GND EP
4 5 11
D1 VOUT
R1
R2
RCOMP
CCOMP
COUT
Figure 1. Step-Up Regulator Configuration for Adjustable Current-Limit Options
L1
ADP1614
FIXED
VIN CURRENT
8 VIN LIMIT SW 6
ON SW 7
OFF
3 EN
CIN
1.3MHz
9 FREQ
650kHz
FB 2
(DEFAULT)
10 SS
COMP 1
CSS GND GND EP
4 5 11
D1 VOUT
R1
R2
RCOMP
CCOMP
COUT
Figure 2. Step-Up Regulator Configuration for Fixed Current-Limit Options
Rev. B
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 ©2012–2014 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com
1 page  
ADP1614
Data Sheet
Parameter
THERMAL SHUTDOWN
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
Symbol Test Conditions/Comments
Min Typ Max Unit
150 °C
20 °C
1 This parameter specifies the average current when the device switches internally with the SW pins (Pin 6 and Pin 7) grounded.
2 Guaranteed by design.
3 Current limit is a function of duty cycle. For the adjustable current limit versions, it is also a function of the resistor on the CLRES pin. See Figure 10 through Figure 13.
4 The CLRES pin cannot be controlled with a current source. An equivalent resistance should be used.
Rev. B | Page 4 of 18
5 Page 
ADP1614
VIN = 3.6V
VfSOWUT=
= 5V
650kHz
OUTPUT VOLTAGE (100mV/DIV)
AC-COUPLED
L = 4.7µH
1
LOAD CURRENT (50mA/DIV)
3
TIME (200µs/DIV)
Figure 22. 50 mA to 150 mA Load Transient,
VIN = 3.6 V, VOUT = 5 V, fSW = 650 kHz
VIN = 3.6V
VfSOWUT=
= 5V
1.3MHz
OUTPUT VOLTAGE (100mV/DIV)
AC-COUPLED
L = 4.7µH
1
LOAD CURRENT (50mA/DIV)
3
TIME (200µs/DIV)
Figure 23. 50 mA to 150 mA Load Transient,
VIN = 3.6 V, VOUT = 5 V, fSW = 1.3 MHz
VIN = 5V
VfSOWUT=
= 15V
650kHz
OUTPUT VOLTAGE (100mV/DIV)
AC-COUPLED
L = 15µH
1
LOAD CURRENT (50mA/DIV)
3
TIME (200µs/DIV)
Figure 24. 50 mA to 150 mA Load Transient,
VIN = 5 V, VOUT = 15 V, fSW = 650 kHz
Data Sheet
VIN = 5V
VfSOWUT=
= 15V
1.3MHz
OUTPUT VOLTAGE (200mV/DIV)
AC-COUPLED
L = 10µH
1
LOAD CURRENT (50mA/DIV)
3
TIME (200µs/DIV)
Figure 25. 50 mA to 150 mA Load Transient,
VIN = 5 V, VOUT = 15 V, fSW = 1.3 MHz
100
90 VfSINW==56V50kHz
ADP1614ACPZ-R7
80
70
60
50
40
VOUT = 8V
VOUT = 12V
30
20
10
0
1m
10m
100m
1
LOAD CURRENT (A)
10
Figure 26. Efficiency vs. Load Current, VIN = 5 V, fSW = 650 kHz
100
VIN = 5V
90 fSW = 1.3MHz
ADP1614ACPZ-R7
80
70
60
50
VOUT = 8V
VOUT = 12V
40
30
20
10
0
1m
10m
100m
LOAD CURRENT (A)
1
10
Figure 27. Efficiency vs. Load Current, VIN = 5 V, fSW = 1.3 MHz
Rev. B | Page 10 of 18
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet ADP1614.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ADP161 | CMOS Linear Regulators | Analog Devices |
| ADP1610 | 1.2 MHz DC-DC Step-Up Switching Converter | Analog Devices |
| ADP1611 | 1.2 MHz Step-Up DC-to-DC Switching Converter | Analog Devices |
| ADP1612 | (ADP1612 / ADP1613) 650 KHz /1.3 MHz Step-Up PWM DC-to-DC Switching Converter | Analog Devices |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |