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PDF FP6145B Data sheet ( Hoja de datos )
| Número de pieza | FP6145B | |
| Descripción | 2A Ultra Low Dropout Linear Regulator | |
| Fabricantes | Fiti | |
| Logotipo |  |
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fitipower integrated technology lnc.
FP6145B
2A Ultra Low Dropout
Linear Regulator
Description
The FP6145B is a 2A ultra low dropout linear
regulator. This product is specifically designed to
provide well supply voltage for front-side-bus
termination on motherboards and NB applications.
The IC needs two supply voltages, control voltage for
the circuitry and main supply voltage for power
conversion, to reduce power dissipation and provide
extremely low dropout. The FP6145B integrates
many functions. Power-On-Reset (POR) circuit
monitors both supply voltages to prevent wrong
operations. Thermal shutdown and current limit
functions protect the device against thermal and
current over-loads. POK indicates the output status
with time delay which is set internally. It can control
other converter for power sequence. The FP6145B
can be enabled by other power system. Pulling and
holding the EN pin below 0.4V shuts off the output.
The FP6145B is available in SOP-8 (EP) package
which features small size as an exposed pad to
reduce the junction-to-case resistance.
Features
Ultra Low Dropout - 0.24V(typ.) at 2A Output
Current
Low ESR Output Capacitor (Multi-layer Chip
Capacitors (MLCC)) Applicable
0.8V Reference Voltage
Fast Transient Response
Adjustable Output Voltage by External Resistors
Power-On-Reset Monitoring on Both VCNTL
and VIN Pins
Internal Soft-Start
Under-Voltage Protection
Current-Limit and Thermal Shutdown Protection
Power-OK Output with a Delay Time
SOP-8 Exposed Pad Green Package
Applications
LCD Monitor/TV
PC Motherboard/NB
Graphic Card
DVD-Video Player
ADSL Modem
Printer and other Peripheral Equipment
Pin Assignment
SP Package (SOP-8 Exposed Pad)
POK
EN
VIN
VCNTL
Top View
18
29 7
3 GND 6
45
GND
FB
VOUT
NC
Ordering Information
FP6145B□□□
FP6368□□□ TR: Tape/Reel
C: Green
Package Type
SP: SOP-8 (Exposed Pad)
Figure1. Pin Assignment of FP6145B
FP6145B-1.0-MAR-2014
1
1 page  
fitipower integrated technology lnc.
FP6145B
Electrical Characteristics
(VCNTL=5V, VIN=1.5V, VOUT=1.2V, TA=25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
VCNTL POR Threshold
VCNTL
2.5
VCNTL POR Hysteresis
VCNTL(hys)
-
VIN POR Threshold
VIN
0.95
VIN POR Hysteresis
VIN(hys)
VCNTL Nominal Supply Current
ICNTL EN=VCNTL
-
VCNTL Shutdown Current
Feedback Voltage Regulation
Load Regulation
Dropout Voltage
ISD EN=0V
VFB
VCNTL3.0~5.5V
IOUT=10mA
IOUT=10mA~2A
1.2V＜VOUT＜1.8V
VDROP
IOUT=2A 1.8V≦VOUT＜2.5V
VCNTL=5V 2.5V≦VOUT＜2.8V
2.8V≦VOUT＜3.1V
-
0.79
-
-
-
-
-
VOUT Pull Low Resistance
EN=0V
-
Soft Start Time
EN Pin Logic High threshold voltage
TSS
VENH Enable
VENL Disable
-
1.2
-
EN Pin Pull High Resistor
Current Limit
VIN
Ripple Rejection
VCNTL
IEN EN=VCNTL
ILIM
VCNTL=3~5.5V
TJ= -40~125°C
PSRR F=120Hz, IOUT=100mA
-
3
-
-
Under-Voltage Protect Threshold
VFB Falling
-
Under-Voltage Protect Current Foldback
-
POK Threshold Voltage for Power OK
VPOK VFB Rising
89%
POK Threshold Voltage for Power Not OK VPNOK VFB Falling
-
POK Low Voltage
POK sinks 1mA
-
POK Delay Time
TDELAY
1
Thermal shutdown Temp
TSD
-
Thermal Shutdown Hysteresis
TSD(HYS)
-
Typ
2.7
0.4
1.05
0.3
1
10
0.8
0.06
0.23
0.24
0.28
0.3
85
0.7
-
-
1
4
65
65
0.35
120
92%
89%
0.25
2
170
50
Max Units
2.9 V
-V
1.15 V
V
1.8 mA
15 μA
0.81 V
0.25 %
0.28
0.29
V
0.38
0.4
-Ω
- mS
-
V
0.4
- MΩ
-A
-
dB
-
-V
- mA
95% VFB
- VFB
0.4 V
3 mS
- °C
- °C
FP6145B-1.0-MAR-2014
5
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet FP6145B.PDF ] | |
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