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PDF FP6115DR-G1 Data sheet ( Hoja de datos )

Número de pieza FP6115DR-G1
Descripción Asynchronous Step-Down Regulator
Fabricantes Feeling Technology 
Logotipo Feeling Technology Logotipo



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FP6115
340KHz, 2A, Asynchronous Step-Down Regulator
General Description
The FP6115 is a buck switching regulator for wide operating voltage application fields. The
FP6115 includes a high current P-MOSFET, a high precision reference (0.8V) for comparing output
voltage with a feedback amplifier, an internal soft start timer and dead-time controller. The oscillator is
for controlling the maximum duty cycle and PWM frequency.
Features
Precision Feedback Reference Voltage: 0.8V (2%)
Wide Supply Voltage Operating Range: 3.6 to 23V
Low Current Consumption: 3mA
Internal Fixed Oscillator Frequency: 340KHz (Typ.)
Internal Soft-Start Function (SS)
Built-In P-MOSFET for 2A Output Loading
Over Current Protection
Package: SOP-8L
Typical Application Circuit
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.62
1/14

1 page




FP6115DR-G1 pdf
FP6115
Recommended Operating Conditions
Parameter
Symbol
Conditions
Supply Voltage
VCC
Operating Temperature
Min.
3.6
-25
Typ.
Max.
23
85
Unit
V
°C
DC Electrical Characteristics (VCC=6V,TA = 25°C, unless otherwise noted)
Parameter
Symbol
Conditions
Min. Typ. Max.
Reference
Feedback Voltage
Input Regulation
Feedback Voltage Change with
Temperature
Oscillator Section
VREF
VREF /
VREF
VCC=3.6 V to 23 V
VREF /
VREF
TA=- -25°C to +85°C
Oscillation Frequency
Short Circuit or Over Current
Oscillation Frequency
f
Measured from LX pin
waveform
fSC
Measured from LX pin
waveform
Frequency Change with Voltage f / V VCC=3.6V to 23V
Frequency Change with
Temperature
f / T TA = -25°C to +85°C
Idle Period Adjustment Section
0.784 0.8 0.816
12
12
340
50
5
5
Maximum Duty Cycle
TDUTY VFB =0.2V
80
Output Section
PMOS Switch Current
PMOS On Resistance
Thermal Shutdown Section
ILX
VCC=4.5V
RDS (ON)
VCC=10V
-2
70 95
50 60
Thermal Shutdown Temperature
+150
Over Current Protection Section
OCSET Bias Current
Total Device Section
IOCSET
40
EN Pin Input Current
EN Pin On Threshold
EN Pin Off Threshold
EN Pin Hysteresis
Supply Shutdown Current
Supply Average current
IEN VEN=2.5V
VUPPER EN pin upper
VLOW EN pin low
VHYS
ISD VEN=0V
IAVE
1.1
0.85
200 250
2
3
20
10
6
Unit
V
%
%
KHz
KHz
%
%
%
A
mΩ
mΩ
°C
µA
µA
V
V
mV
µA
mA
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.62
5/14

5 Page





FP6115DR-G1 arduino
FP6115
The inductors in different shape and style are available from manufacturers. Shielded inductors
are small and radiate less EMI issue. But they cost more than unshielded inductors. The choice
depends on EMI requirement, price and size.
Inductor Value (µH)
10
10
15
Dimensions(mm)
10.3×10.3×4.0
10.1×10.1×3.0
10.3×10.3×4.0
Component Supplier
FENG-JUI
Sumida
FENG-JUI
Model
TPRH10D40-10R
CDRH104R
TPRH10D40-15R
Output Capacitor Selection
The output capacitor is required to maintain the DC output voltage. Low ESR capacitors are
preferred to keep the output voltage ripple low. In a buck converter circuit, output ripple voltage is
determined by inductor value, switching frequency, output capacitor value and ESR. The output ripple
is determined by:
VO
=
IL
× ESRCOUT
+
8×f
1
× COUT

Where f = operating frequency, COUT= output capacitance and IL = ripple current in the inductor.
For a fixed output voltage, the output ripple is highest at maximum input voltage since IL increases
with input voltage.
Using Ceramic Input and Output Capacitors
Care must be taken when ceramic capacitors are used at the input and the output. When a
ceramic capacitor is used at the input and the power is supplied by a wall adapter through long wires, a
load step at the output can induce ringing at the input, VIN. In best condition, this ringing can couple to
the output and be mistaken as loop instability. In worst condition, a sudden inrush of current through
the long wires can potentially generate a voltage spike at VIN, which may large enough to damage the
part. When choosing the input and output ceramic capacitors, choose the one with X5R or X7R
dielectric formulations. These dielectrics have the best temperature and voltage characteristics of all
the ceramics for a given value and size.
PC Board Layout Checklist
1. The power traces, consisting of the GND trace, the LX trace and the VIN trace should be
kept short, direct and wide.
2. Place CIN near VCC pin as closely as possible to maintain input voltage steady and filter
out the pulsing input current.
3. The resistive divider R1and R2 must be connected to FB pin directly as closely as possible.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.62
11/14

11 Page







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