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FP6145B PDF даташит

Спецификация FP6145B изготовлена ​​​​«Fiti» и имеет функцию, называемую «2A Ultra Low Dropout Linear Regulator».

Детали детали

Номер произв FP6145B
Описание 2A Ultra Low Dropout Linear Regulator
Производители Fiti
логотип Fiti логотип 

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FP6145B Даташит, Описание, Даташиты
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
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FP6145B Даташит, Описание, Даташиты
fitipower integrated technology lnc.
FP6145B
Typical Application Circuit
VCNTL=5V
C1
1μF
ON
OFF
R3
10K
U1
4 VCNTL
VIN 3
1
2
POK FP6145B NC
EN VOUT
5
6
8 GND
FB 7
C2
100μF
VIN=1.5V
C3
0.1μF
VOUT=1.2V/2A
R1
1K
C6
12~48nF
C4
220μF
C5
0.1μF
R2
2K
Figure 2. an EC as a Main Output Capacitor
VCNTL=5V
C1
1μF
ON
OFF
R3
10K
U2
4 VCNTL
VIN 3
1
2
POK FP6145B NC
EN VOUT
5
6
8 GND
FB 7
VOUT=VFB*(1+R1/R2)
VFB=0.8V
R1
39K
R2
78K
C2
10μF
VIN=1.5V
C4
56pF
VOUT=1.2V/2A
C3
10μF
Figure 3. Using a MLCC as the Output Capacitor
FP6145B-1.0-MAR-2014
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FP6145B Даташит, Описание, Даташиты
fitipower integrated technology lnc.
Functional Pin Description
Pin Name
POK
EN
VIN
VCNTL
NC
VOUT
FB
GND
Exposed Pad
Pin No.
1
2
3
4
5
6
7
8
9
Pin Function
Power OK output pin.
Internal pull high.
EN=High or Floating Enable.
EN=Low Shutdown mode.
MOSFET power supply input pin.
Input pin for internal control circuitry.
No connection.
Output pin of the regulator.
Output voltage feedback pin.
GND pin.
Thermal dissipation pad. Connect exposed pad to GND.
Block Diagram
FP6145B
VIN
VCNTL
EN
GND
Power-ON
Reset
1M
Enable
Thermal
Shutdown
N-MOSFET
Current Limit
and Foldback
Soft-Start
And
Control Logic
Error
Amp
-+
Vref = 0.8V
UVP
+-
0.35V
Delay
POK
92%
Vref
POK
Figure 4. Block Diagram of FP6145B
VOUT
FB
FP6145B-1.0-MAR-2014
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