|
|
PDF APL5610A Data sheet ( Hoja de datos )
| Número de pieza | APL5610A | |
| Descripción | Low Dropout Linear Regulator Controller | |
| Fabricantes | ANPEC | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de APL5610A (archivo pdf) en la parte inferior de esta página. Total 17 Páginas | ||
|
No Preview Available !
APL5610/A
Low Dropout Linear Regulator Controller
Features
General Description
• Wide Supply Voltage Range from 4.5 to 13.5V
The APL5610/A is a low dropout linear regulator controller.
• High Output Accuracy Over Operating Temperature The APL5610/A could drive an external N-Channel
and Loading Ranges
MOSFET and provides an adjustable output by using an
• Fast Transient Response
external resistive divider.
• Power-On-Reset Monitoring on VCC
• Internal Soft-Start Function
• Low Shutdown Current: < 5µA
The APL5610/A integrates various functions. For example,
a Power-On-Reset (POR) circuit monitors VCC supply
voltage to prevent wrong operations; the function of Un-
der-Voltage Protection (UVP) protects the device from short
• Enable Control Function
circuit condition. A POK indicates that the output status
• Under-Voltage Protection
with time delay which is set internally. It can control other
• Power-OK Output with a Delay Time
converter for power sequence. Moreover, the APL5610/A
• Two Versions of IC Available:
can be enabled by other power system; namely, holding
- APL5610: UVP Activated after V is Ready
OUT
- APL5610A: UVP Activated after VCC is Supplied
• SOT-23-6 Package
the EN above 1.6V enables output and pulling the EN
under 0.4 disables output.
The APL5610/A is available in SOT-23-6 package.
• Lead Free and Green Devices Available
(RoHS Compliant)
Simplified Application Circuit
Applications
• Note Book PC Applications
• Motherboard Applications
Pin Configuration
APL5610/A
EN 1
GND 2
FB 3
6 VCC
5 DRV
4 POK
SOT-23-6
(Top View)
ON
EN
OFF
POK
-
VCC
EN DRV
APL5610
APL5610A
POK
FB
GND
VCC
VIN
VOUT
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Sep., 2009
1
www.anpec.com.tw
1 page  
APL5610/A
Typical Operating Characteristics
Supply Current vs. Supply Voltage
0.50
0.45
0.40 IC Enabled
0.35
0.30
0.25
0.20
0.15
0.10 IC Disabled
0.05
0
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Supply Voltage (V)
DRV Sink Current vs. DRV Voltage
45
40
35
30
25
20
15
10
5
VIN = 12V, VFB=1V,
TA=25oC
0
0 2 4 6 8 10 12
DRV Voltage (V)
Feedback Voltage vs. Junction
0.900
Temperature
0.875
0.850
0.825
0.800
0.775
0.750
0.725
0.700
-50 -25 0 25 50 75 100 125
Junction Temperature (oC)
DRV Source Current vs. DRV Voltage
70
60
50
40
30
20
10 VIN = 12V, VFB=0.75V,
TA=25oC
0
0 24 6
8
DRV Voltage (V)
10 12
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Sep., 2009
5
www.anpec.com.tw
5 Page 
APL5610/A
Application Information
Input Capacitor
The APL5610/A requires proper input capacitor of VIN
(connected to the external MOSFET’s drain) to supply
surge current during stepping load transients to prevent
the input rail from dropping. Because the parasitic induc-
tor from the voltage sources or other bulk capacitors to
the V limits the slew rate of the surge current, it is nec-
IN
essary to place the input capacitor near the MOSFET’s
drain as close as possible. If the MOSFET is located
near the bulk capacitor for upstream voltage regulator,
this input capacitor may not be required. The Input ca-
pacitor for VIN should be larger than 1µF. Higher capaci-
tance of this V input capacitor is needed if the stepping
IN
load transients are large and fast.
Another input capacitor for VCC is recommended. Placing
the input capacitor of VCC as close to VCC pin as possible
prevents outside noise from entering APL5610/A’s con-
trol circuitry. The recommended capacitance of VCC input
capacitor is 1µF.
Output Capacitor
The APL5610/A needs a proper output capacitor to main-
tain circuit stability and to improve transient response
over temperature and current. In order to insure the cir-
cuit stability, the proper output capacitor value should be
larger than 10µF. With X5R and X7R dielectrics, 22µF is
sufficient at all operating temperatures.
POK Pull High
The POK is an open-drain output that needs to be pulled
high to a proper voltage (not greater than 5.5V) via a pull-
up resistor. The pull-up resistor can be 20kΩ~100kΩ.
MOSFET Selection
APL5610/A requires an N-channel MOSFET as a pass
element. There are some parameters must be consid-
ered in selecting a MOFSET, including: Threshold Volt-
age VTH, RDS(on ), Continuous IDS current and Package Ther-
mal Resistance. The MOSFET selection guidelines are
listed as below:
1. Threshold Voltage V : Select the MOSFET V rating to
TH TH
meet the following equation:
VTH < VCC(min) –VOUT(max)
2. RDS(on) : Select the MOSFET RDS(on) to ensure that the
output voltage will never enter dropout:
R < (V –V )/ IDS(on )(max)
IN(min)
OUT(max) OUT(max)
(Note: R
must be met at all temperatures and at the minimum V
DS(on)(max)
GS
condition)
3. Continuous IDS(max): Select the IDS(max) that can support
the output current:
Continuous I
>I
DS(max)
OUT(max)
4. Package Thermal Resistance θ(JA): Select a package
of
MOSFET
that
can
dissipate
the
heat,
θ(JA)
<
(T
J
–T )/P ,
AD
where TJ is the maximum allowable Junction tempera-
ture of MOSFET, TA is the ambient temperature, PD is the
maximum power dissipation on MOSFET, calculated as
below:
P =(V –V ) x I
D
IN(max)
OUT(min)
OUT(max)
Power Sequencing (Only for APL5610A)
At start-up, it is necessary to ensure that the V (the volt-
IN
age supplied to MOSFET drain), VCC and VEN are se-
quenced correctly to avoid erroneous latch-off. To avoid
UVP latch-off happened at start-up due to sequencing
issues, the key method is the VIN should be larger than
the output under-voltage threshold plus the drop through
the pass MOSFET when that output is enabled.
Figure 1 and 2 show the two types of power on sequence.
Figure 1 shows the VCC comes up before the VIN, and then
the output would be enabled when the V is applied.
EN
Figure 2 shows the V comes up before the V , and then
IN CC
the output can either be enabled with the VCC or VEN. Rec-
ommended power on sequence is shown in Figure1 and
2.
VCC
VIN VUV(TH)
VEN
VEN(TH)
VOUT
VEN(TH) occurs after
VUV(TH) is reached
Figure 1. APL5610A supply comes up before MOSFET
drain supply
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Sep., 2009
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 17 Páginas | |
| PDF Descargar | [ Datasheet APL5610A.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| APL5610 | Low Dropout Linear Regulator Controller | ANPEC |
| APL5610A | Low Dropout Linear Regulator Controller | ANPEC |
| 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 |