|
|
PDF XR77103EVB-A1R0 Data sheet ( Hoja de datos )
| Número de pieza | XR77103EVB-A1R0 | |
| Descripción | Universal PMIC 3-Output Buck Regulator | |
| Fabricantes | EXAR | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de XR77103EVB-A1R0 (archivo pdf) en la parte inferior de esta página. Total 19 Páginas | ||
|
No Preview Available !
XR77103-A1R0
Universal PMIC 3-Output Buck Regulator
Description
The XR77103-A1R0 universal PMIC features three 2A synchronous
high-efficiency, buck regulators with integrated power switches. They
can operate in 5V, 9V and 12V powered systems with minimal required
external component thus providing the smallest size solution possible.
Two of the outputs may be paralleled for output currents up to 5A peak
with steady state current of up to 4A.
The output voltage of each converter can be adjusted by external
resistor divider down to voltage as low as 0.8V. With a nominal
switching frequency of 1MHz, the regulators can also be synchronized
to an external clock in applications where EMI control is critical.
XR77103-A1R0 features a supervisor circuit that monitors each
converter output. PGOOD pin is asserted once sequencing is done,
outputs are reported in regulation and the reset timer expires.
The polarity of the signal is active high. A pulse skipping mode (PSM)
reduces switching losses maintaining high efficiency when the system
is unloaded or in standby mode.
FEATURES
■■ 4.5V to 14V wide input supply
voltage range
■■ Built-in MOSFET and synchronous rectifier
■■ 0.8V, high accuracy reference (1%)
■■ Current-mode control with simple
compensation circuit
■■ External synchronization
■■ Power good
■■ Protection
Thermal shutdown
Overvoltage transient protection
Overcurrent protection
■■ 32-pin 4mm x 4mm TQFN package
APPLICATIONS
■■ FPGA and DSP supplies
■■ Video processor supplies
■■ Applications processor power
REV1A
1/19
1 page  
XR77103-A1R0
Electrical Characteristics (Continued)
TA = 25°C, VIN = 12V, EN = VCC, fSW = 1MHz, unless otherwise specified. Limits applying over the full operating temperature
range are denoted by a •.
Symbol
Parameter
Power Good Reset Generator
VUVBUCK
Threshold voltage for buck
under voltage
tPG_DEGLITCH
tON_HICCUP
Deglitch time
Hiccup mode on time
tOFF_HICCUP
Hiccup mode off time
tRP Minimum reset period
RPG
Power good pull-down
on resistance
Input Threshold (SYNC, EN)
VIH Input threshold high
VIL Input threshold low
Conditions
• Min Typ Max Units
Output falling,
(disabled after tON_HICCUP)
Output rising, (PG will be asserted)
Rising and falling
VUVBUCKX asserted
Once tOFF_HICCUP elapses,
all converters will start up again
85 %
90
11 ms
12 ms
15 ms
1s
14 50
Ω
VINPUT rising
VINPUT falling
• 2.07
• 1.36
2.53 V
1.67 V
REV1A
5/19
5 Page 
Typical Performance Characteristics (Continued)
Thermal Characteristics
4
3.5
3
2.5
2
1.5
1
0.5
0
0 10 20 30 40 50 60 70 80 90 100 110 120
TAMBIENT (°C)
Figure 20. Package Thermal Derating
1.4
1.8V
1.2 2.5V
1 3.3V
0.8
0.6
0.4
0.2
0
0 0.4 0.8 1.2 1.6
IOUT (A)
Figure 22. Channel 2 Power Loss at
fSW = 1MHz, VIN = 12V, No Airflow
2
1.4
1.2V
1.2 1.8V
1 2.5V
0.8 3.3V
0.6
0.4
0.2
0
0 0.4 0.8 1.2 1.6
IOUT (A)
Figure 24. Channel 1 Power Loss at
fSW = 1MHz, VIN = 5V, No Airflow
2
REV1A
XR77103-A1R0
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1.8V
2.5V
3.3V
0.4 0.8 1.2 1.6
IOUT (A)
Figure 21. Channel 1 Power Loss at
fSW = 1MHz, VIN = 12V, No Airflow
2
1.4
1.2
1
0.8
0.6
0.4
0.2
0
0
1.8V
2.5V
3.3V
0.4 0.8 1.2 1.6
IOUT (A)
Figure 23. Channel 3 Power Loss at
fSW = 1MHz, VIN = 12V, No Airflow
2
1.4
1.2V
1.2 1.8V
1 2.5V
0.8 3.3V
0.6
0.4
0.2
0
0 0.4 0.8 1.2 1.6
IOUT (A)
Figure 25. Channel 2 Power Loss at
fSW = 1MHz, VIN = 5V, No Airflow
2
11/19
11 Page | ||
| Páginas | Total 19 Páginas | |
| PDF Descargar | [ Datasheet XR77103EVB-A1R0.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| XR77103EVB-A1R0 | Universal PMIC 3-Output Buck Regulator | EXAR |
| 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 |