FP6292
Low-Noise Step-Up Current Mode PWM IC
General Description
The FP6292 is a current mode boost DC-DC converter. Its PWM circuitry with built-in 0.75Ω
power MOSFET make this regulator highly power efficient. The internal compensation network also
minimizes as much as 5 external component counts. The non-inverting input of error amplifier connects
to a 1.24V precision reference voltage and internal soft-start function can reduce the inrush current
The FP6292 is available in the TSOT23-6L / TSOT23-5L package and provides space-saving
PCB for the application fields.
Features
Precision Feedback Reference Voltage: 1.24V (±4%)
Under Voltage Lockout Protection
Over Voltage Protection
Over Temperature Protection
Internal Soft-Start
Zero Shutdown Current
Adjustable Output up to 24V
Package: TSOT23-6L / TSOT23-5L
Applications
LCD Displays
Digital Cameras
Camcorders
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
1/13
FP6292
Function Block Diagram
Pin Descriptions
TSOT23-6L
Name
No. I / O
Description
LX
1
O
Power Switch Output
GND
2
P
IC Ground
FB
3
I
Error Amplifier Inverting Input
EN
4
I
Enable Control (Active High)
OVP
5
O
Over Voltage Protection
VCC
6
P
IC Power Supply
TSOT23-5L
Name
No. I / O
Description
LX
1
O
Power Switch Output
GND
2
P
Ground
FB
3
I
Error Amplifier Inverting Input
EN
4
I
Enable Control (Active High)
VCC
5
P
IC Power Supply
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
2/13
FP6292
Marking Information
TSOT23-6L / TSOT23-5L
Lot Number: Wafer lot number’s last two digits
For Example: 132386TB 86
Year: Production year’s last digit
Part Number Code: Part number identification code for this product. It should be always “AE”.
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
3/13
FP6292
Ordering Information
Operating Temperature
Package
MOQ
Description
FP6292iR-G1
Part Number
Code
AE
-40°C ~ 85°C
TSOT23-5L
3000EA
Tape & Reel
FP6292hR-G1
AE
-40°C ~ 85°C
TSOT23-6L
3000EA
Tape & Reel
Absolute Maximum Ratings
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
Supply Voltage
VCC
0
6
V
OVP Voltage
VOVP
0
25
V
VLX
0
25
V
0
6
V
LX Input Voltage
EN,FB Voltage
Power Dissipation
PD
Thermal Resistance (Note1)
θJA
Junction Temperature
TJ
TSOT23-5L @TA=25°C
455
TSOT23-6L @TA=25°C
455
TSOT23-5L
+220
TSOT23-6L
+220
mW
°C / W
+150
°C
Operating Temperature
TOP
-40
+85
°C
Storage Temperature
TST
-65
+150
°C
+260
°C
Lead Temperature
(soldering, 10 sec)
Note1:
θJA is measured in the natural convection at TA=25°C on a low effective thermal conductivity test
board of JEDEC 51-3 thermal measurement standard.
IR Re-flow Soldering Curve
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
4/13
FP6292
Recommended Operating Conditions (Note 1)
Max.
Unit
Junction Temperature Range
TJ
-40
+125
°C
Operating Temperature Range
TA
-40
+85
°C
Parameter
Symbol
Conditions
Min.
Typ.
Note 1:
The device is not guaranteed to function outside its operating conditions.
DC Electrical Characteristics (VCC=3.7V, TA=25°C,unless otherwise specified)
Parameter
Symbol
Conditions
Min.
Typ.
Max.
Unit
5.5
V
System Supply Input
Input Supply Range
VCC
Under Voltage Lockout
2.7
VUVLO
2.2
V
Quiescent Current
ICC
VFB=1.3V, No switching
0.3
mA
Average Supply Current
ICC
VFB=1.0V, Switching
0.5
mA
Shutdown Supply Current
ICC
VEN=GND
0.1
µA
FOSC
VFB=1.0V
Oscillator
Operation Frequency
Frequency Change with Voltage
Frequency Change with
Temperature
Maximum Duty Cycle
0.9
1.2
1.5
MHZ
△f / △V VCC=2.7V to 5.5V
2
%
△f / △T TA=-40°C to 85°C
10
%
TDUTY
85
VREF
1.19
%
Reference Voltage
Feedback Voltage
Feedback Voltage Change with
Temperature
△VREF / △T
Line Regulation
1.24
1.29
V
TA=-40°C to 25°C
1.5
TA=25°C to 85°C
1.5
VCC=2.7V~5.5V
0.01
%/V
0.75
Ω
%
MOSFET
On Resistance of Driver
RDS (ON) ILX=0.1A
Protection
OVP Threshold Voltage
VOVP
24
V
OVP Sink Current
ISINK
5
µA
OCP Current
IOCP
750
mA
OTP Temperature
TOTP
+150
°C
Enable Voltage
VEN
Shutdown Voltage
VEN
1.5
V
0.4
V
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
5/13
FP6292
Typical Operating Characteristics
Efficiency vs. Output Current
Efficie ncy v s. Output Current
90
95
VIN=5.0V
88
VIN=5.0V
86
85
Efficiency (%)
Efficiency (%)
90
VIN=3.7V
80
84
82
VIN=3.7V
80
78
76
75
VOUT=12V, L=10µH
VOUT=20V, L=10µH
74
70
72
0
20
40
60
80
0
100 120 140 160 180 200
20
1.6
1.2
1.4
-40℃
25℃
85℃
1.0
0.8
100
1.0
-40℃
0.8
25℃
85℃
0.6
3
3.5
4
4.5
5
5.5
2.5
3
3.5
Input Voltage (V)
4
4.5
5
5.5
Input Voltage (V)
Switching Fre que ncy vs. Te mpe rature
Switching Frequency vs. Input Voltage
1.25
1.26
1.24
1.25
Frequency (MHz)
Frequency (MHz)
80
0.4
2.5
1.23
1.22
1.21
1.20
1.24
1.23
1.22
1.21
VIN=3.7V
1.20
1.19
1.19
2.5
3
3.5
4
4.5
5
-60
5.5
-40
-20
1.256
1.260
Feedback Voltage (V)
1.264
1.252
1.248
1.244
100
1.244
1.236
4.5
80
1.248
1.236
4
60
1.252
1.240
3.5
40
1.256
1.240
3
20
Fee dback Voltage vs. Tempe rature
Feedback Voltage vs. Input Voltage
1.260
2.5
0
Temperature (℃)
Input Voltage (V)
Feedback Voltage (V)
60
Shutdown Voltage vs. Input Voltage
1.4
Shut Down Voltage (V)
Enable Voltage (V)
Enable Voltage vs. Input Voltage
1.8
1.2
40
Output Current (mA)
Output Current (mA)
5
VIN=3.7V
-60
5.5
-40
-20
0
20
40
60
80
100
Temperature (℃)
Input Voltage (V)
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
6/13
FP6292
Switching Current vs. Input Voltage
0.84
0.28
0.74
Switching Current (mA)
Quiescent Current (mA)
Quiesce nt Current v s. Input Voltage
0.30
0.26
0.24
0.22
0.20
0.18
0.64
0.54
0.44
0.34
0.24
2.5
3
3.5
4
4.5
5
5.5
2.5
3
Input Voltage (V)
4
4.5
5
5.5
Input Voltage (V)
Curre nt Limit v s. Input Voltage
M aximum Duty Cycle vs. Input Voltage
850
93.2
Maximum Duty Cycle (%)
800
Current Limit (mA)
3.5
750
700
650
600
550
500
VOUT=12V, L=10µH
450
400
92.8
92.4
92.0
91.6
91.2
90.8
90.4
2.5
3
3.5
4
4.5
5
5.5
2.5
Input Voltage (V)
3
3.5
4
4.5
5
5.5
Input Voltage (V)
Load Transient Response
Output Ripple
L=10µH, COUT=10µF
L=10µH, COUT=10µF
VOUT
VLX
IOUT
VOUT
VIN=3.7V, VOUT=12V, IOUT=30mA~120mA
VIN=3.7V, VOUT=12V, IOUT=120mA
Power On from EN
Power Off from EN
VEN
VEN
VIN
VIN
VOUT
VOUT
IL
IL
VIN=3.7V, VOUT=12V, IOUT=120mA
VIN=3.7V, VOUT=12V, IOUT=120mA
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
7/13
FP6292
Function Description
Operation
The FP6292 is a current mode boost converter. The constant switching frequency is 1.2MHz and
operates with pulse width modulation (PWM). Build-in 24V / 0.75A MOSFET provides a high output
voltage. The control loop architecture is peak current mode control; therefore slope compensation
circuit is added to the current signal to allow stable operation for duty cycles larger than 50%.
Soft Start Function
Soft start circuitry is integrated into FP6292 to avoid inrush current during power on. After the IC
is enabled, the output of error amplifier is clamped by the internal soft-start function, which causes
PWM pulse width increasing slowly and thus reducing input surge current.
Over Voltage Protection (OVP)
In some condition, the resistive divider may be unconnected, which will cause PWM signal to
operate with maximum duty cycle and output voltage is boosted higher and higher. The power
MOSFET will be turned off immediately, when the output voltage exceeds the OVP threshold level. The
FP6292’s OVP threshold is 24V.
Over Temperature Protection (OTP)
FP6292 will turn off the power MOSFET automatically when the internal junction temperature is
over 150°C. The power MOSFET wake up when the junction temperature drops 30°C under the OTP
threshold temperature.
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
8/13
FP6292
Application Information
General Application Circuit
D1 MSCD 1020
L1 10µH
VOUT
12V
VIN
2.7V~5.5V
R1
140K
C1
4.7µF
5
LX
VCC
C2
4.7µF~10µF
1
FP6292
4
EN
2
FB
GND
3
R2
16K
TSOT23-5L
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
9/13
FP6292
Inductor Selection
Inductance value is decided based on different condition. 4.7 to 22µH inductor value is
recommended for general application circuit. There are three important inductor specifications, DC
resistance, saturation current and core loss. Low DC resistance has better power efficiency. Also, it
avoid inductor saturation which will cause circuit system unstable and lower core loss at 1.2MHz.
Capacitor Selection
The output capacitor is required to maintain the DC voltage. Low ESR capacitors are preferred to
reduce the output voltage ripple. Ceramic capacitor of X5R and X7R are recommended, which have
low equivalent series resistance (ESR) and wider operation temperature range.
Diode Selection
Schottky diodes with fast recovery times and low forward voltages are recommended. Ensure the
diode average and peak current rating exceed the average output current and peak inductor current. In
addition, the diode’s reverse breakdown voltage must exceed the output voltage.
Output Voltage Programming
The output voltage is set by a resistive voltage divider from the output voltage to FB. The output
voltage is:
R1
VOUT 1.24 V 1
R2
The recommended resistor value is summarized below:
VOUT (V)
R1 (kΩ)
R2 (kΩ)
5
12
15
18
140
140
145
150
46
16
13
11
Layout Considerations
1. The power traces, consisting of the GND trace, the LX trace and the VCC trace should be kept
short, direct and wide.
2. LX、L and D switching node, wide and short trace to reduce EMI.
3. Place CIN near VCC pin as closely as possible to maintain input voltage steady and filter out the
pulsing input current.
4. The resistive divider R1and R2 must be connected to FB pin directly as closely as possible.
5. FB is a sensitive node. Please keep it away from switching node, LX.
6. The GND of the IC, CIN and COUT should be connected close together directly to a ground
plane.
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
10/13
FP6292
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
11/13
FP6292
Package Outline
TSOT23-5L
Unit: mm
Symbols
Min. (mm)
Max. (mm)
A
0.750
0.800
A1
0.000
0.050
A2
0.700
0.775
b
0.350
0.500
c
0.100
0.200
D
2.800
3.000
E
2.600
3.000
E1
1.500
1.700
e
0.950 BSC
e1
1.900 BSC
L
0.370
0.600
L1
0.600 REF
L2
0.250 BSC
R
0.100
R1
0.100
0.250
θ°
0°
8°
θ1
4°
12°
Note:
1. Dimension “D” does not include molding flash, protrusions or gate burrs.
2. Dimension “E1” does not include inter-lead flash or protrusions.
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
12/13
FP6292
TSOT23-6L
Unit: mm
Symbols
Min. (mm)
Max. (mm)
A
0.750
0.800
A1
0.000
0.050
A2
0.700
0.775
b
0.350
0.500
c
0.100
0.200
D
2.800
3.000
E
2.600
3.000
E1
1.500
1.700
e
0.950 BSC
e1
1.900 BSC
L
0.370
0.600
L1
0.600 REF
L2
0.250 BSC
R
0.100
R1
0.100
0.250
θ°
0°
8°
θ1
4°
12°
Note:
1. Dimension “D” does not include molding flash, protrusions or gate burrs.
2. Dimension “E1” does not include inter-lead flash or protrusions.
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.
Rev. 0.66
Website: http://www.feeling-tech.com.tw
13/13
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