|
|
PDF G526 Data sheet ( Hoja de datos )
| Número de pieza | G526 | |
| Descripción | Dual USB High-Side Power Switch | |
| Fabricantes | Global Mixed-mode Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de G526 (archivo pdf) en la parte inferior de esta página. Total 6 Páginas | ||
|
No Preview Available !
Global Mixed-mode Technology Inc.
G526
Dual USB High-Side Power Switch
Features
Compliant to USB specifications
Low MOSFET on resistance at 5.0V 140mΩ max.
per channel
500mA minimum continuous load current per
channel
3.0V to 5.5V input
110µA typical on-state supply current
1µA typical off-state supply current
Output can be forced higher than input
(off-state)
1.25A maximum current limit
Thermal shutdown
2.4V typical undervoltage lockout (UVLO)
Open-drain fault flag pins
1ms turn-on (soft-start) and fast turnoff
Available with active-high or active-low
enable
Applications
USB host and self-powered hubs
Bus-powered hubs
Hot plug-in power supplies
Battery-charger circuits
Description
The G526 is a dual integrated high-side power switch
with independent enable and flag functions, optimized
for self-powered and bus-powered Universal Serial
Bus (USB) applications.
The G526 satisfies the following USB requirements:
the switch's low on-resistance meets USB voltage
drop requirements; fault current is limited to typically
750mA, well below the UL 25VA safety requirement;
and flag outputs are available to indicate fault condi-
tions to the local USB controller. Soft start eliminates
the momentary voltage drop on the upstream port that
may occur when the switch is enabled in bus-powered
applications.
Additional features include thermal shutdown to pre-
vent catastrophic switch failure from high-current loads,
under-voltage lockout (UVLO) ensuring that the device
remains off unless there is a valid input voltage pre-
sent, and an enable input that is compatible with both
3.3V and 5V logic.
The G526 is available in active-high and active-low
enable versions in 8-pin SOIC packages.
Ordering Information
PART
G526-1
G526-2
ENABLE
Active High
Active Low
TEMP. RANGE
－40°C to ＋85°C
－40°C to ＋85°C
PACKAGE
8-Pin SOP
8-Pin SOP
Pin Configuration
ENA 1
FLGA 2
G526
8 OUTA
7 IN
FLGB 3
6 GND
ENB 4
5 OUTB
8 Pin SOP
G526
(ENA)1
(FLGA)2
GATE
CONTROL
(FLGB)3
(ENB)4
GATE
CONTROL
6 (GND)
8(OUTA)
7 (IN)
5 (OUTB)
Ver 1.0
Dec 26, 2000
TEL: 886-3-5788833
http://www.gmt.com.tw
1
1 page  
Global Mixed-mode Technology Inc.
G526
VBUS
USB Hub
G526
1 ENA
2
FLGA
4.7
µF
3
FLGB
4
ENB
OUTA
IN
GND
OUTB
8
7
6
5
USB
Controller
CBULK
USB
Function
USB
Function
GND
Cable
USB Peripheral
CBULK
Figure 3. Inrush Current-Limit Application
Enable Input
EN must be driven logic high or logic low, or be pulled
high or low for a clearly defined input. Floating the
input may cause unpredictable operation. EN should
not be allowed to go negative with respect to GND.
Soft Start
The G526 presents a high impedance when off, and
slowly becomes a low impedance as it turns on. This
reduces inrush current and related voltage drop that
results from charging a capacitive load, satisfying the
USB voltage drop requirements, for bus-powered ap-
plications as shown in Figure 2.
The soft start circuit shown in Figure 3 can be utilized
to meet USB transient regulation specifications with
large load capacitances (CBULK >10µF). The G526
will provide inrush current limiting for these applica-
tions.
Transient Overcurrent Filter
V＋
USB Controller
OVERCURRENT
10k
10k
0.1 µF
G526
1 ENA OUTA 8
2
FLGA
7
IN
3 FLGB
6
GND
4 ENB OUTB 5
Figure 4. Transient Filter
The inrush current from the connection of a heavy ca-
pacitive load may cause the fault flag to fall for a short
duration while the switch is in a constant-current mode,
for charging the capacitance. In needed, a simple 1ms
RC low-pass filter in series with the fault flag circuit
will prevent erroneous overcurrent reporting (see Fig-
ure 4).
Ver 1.0
Dec 26, 2000
TEL: 886-3-5788833
http://www.gmt.com.tw
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet G526.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| G52 | 3.0V Primary lithium-sulfur dioxide (Li-SO2)High drain capability C-size spiral cell |  SAFT |
| G52-73131X2 | Mainboard Manual |  MSI |
| G5201 | 5V/12V Input Voltage-Mode Buck PWM Controller | Global Mixed-mode Technology |
| G524A | Power Distribution Switch | Global Mixed-mode Technology |
| 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 |