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PDF FP5148 Data sheet ( Hoja de datos )
| Número de pieza | FP5148 | |
| Descripción | 2 CHANNEL SYNCHRONOUS PWM CONTROL IC | |
| Fabricantes | Feeling | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de FP5148 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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FP5148
2 Channel Synchronous Buck PWM Controller
General Description
The FP5148 is a dual channel synchronous buck switching controller with adjustable
over-current protection for DC-DC applications. The FP5148 includes two stage 180° out of phase for
driving NMOS, power down under-voltage lockout circuit (UVLO) , the inverting input of amplifier
connects to a 0.8V precision reference regulator , short circuit and over current shutdown protection
circuit (SCP / OCP)and programmable soft start function.
Features
Wide Supply Voltage Operating Range: 4.2~15V
Precision Reference Voltage: 0.8V ±2%
Peak Output Source / Drive Capability: 500mA
Totem-pole Output for MOS Driving
Programming Oscillation Frequency
Programmable Soft Start Function (SS)
OC/SC Protection Function (OCP / SCP)
UVLO Protection Function
Package: SOP-16L, SOP-16L (EP)
Applications
VGA Card
Battery Charger
Hard Disk Drive
Multi-Output Application
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. 0.9
1/13
1 page  
FP5148
Ordering Information
Part Number
Operating Temperature
FP5148DR-LF
-10°C ~ +85°C
FP5148XR-LF
-10°C ~ +85°C
Package
SOP-16L
SOP-16L (EP)
MOQ
2500EA
2500EA
Description
Tape & Reel
Tape & Reel
Absolute Maximum Ratings
Parameter
Symbol Conditions
Power Supply Voltage
Power Supply Voltage for High
Side Driver
Output Source Current
VIN
VCH1, VCH2
Output Sink Current
Allowable Power Dissipation
SOP-16L, TA≦+25℃
SOP-16L (EP), TA≦+25℃
Operating Temperature
Storage Temperature
Operating Junction Temperature
Range
Lead Temperature SOP-16L
Lead Temperature SOP-16L (EP)
SOP-16L ,soldering, 10
sec
SOP-16L (EP), soldering,
10 sec
Min.
-10
-55
+0
Typ.
Max.
15
25
-500
500
830
650
+85
+125
+125
+260
+260
Unit
V
V
mA
mA
mW
mW
℃
℃
℃
℃
℃
Suggested 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.
Website: http://www.feeling-tech.com.tw
Rev. 0.9
5/13
5 Page 
FP5148
Application Information
Vin
C1
330uF
C2
0.1uF
Vout1
C18 C19 C20
330uF 330uF 0.1uF
R12 R13
10k
C21
R18
3k
C11
330uF
L2 20uH
Q1
81
72
63
54
AP6680M
C17
R14
D9
D1
1N4148
D3
D2
1N4148
1N4148
C4
1uF/50V
D7
21V
R20
D5
1N4148
D4
1N4148
D6
C23 1N4148
D8 1uF/50V
21V
C3
330uF
IC1
C9
0.1uF
C5
R1 33pF C7
27k 2200pF
R4
1 VFB1
2
R3
3
20k
4
COMP1
Rt
OCSET1
VFB2 16
COMP2 15
FTC2019
SS
OCSET2
14
13
C6
C8 33pF R2
C10 2200pF
27k
0.1uF
R5
Q3
81
72
63
54
AP6680M
R6
0
R10
0
6 HDRV1
7 LDRV1
AP6680M
HDRV2 11
LDRV2 10
R7
0
R11
0
Q4
18
27
36
45
D10
C24
0.1uF
Q2
18
27
36
45
AP6680M
L1 20uH
C12
R15
R8
R9
C16
10k
R16
3k
C13
0.1uF
R17
0
On/Off
R19
Q5
4.7k C22
2N3904/TO
0.1uF
Vout2
C14
330uF
C15
330uF
Optional for On/Off Control
Above is a simple application circuit using power supply +5V. The converting voltage is from +5V to
+3.3V (dual output) , and VCH1 / VCH2 pin voltage are high enough to make high side NMOS turn-on.
The output1 voltage is set by following equation:
VOUT1
1
R12
R18
VREF
1
10K
3K
0.8V
3.47V
The output2 voltage is set by following equation:
VOUT2
1
R9
R16
VREF
1
10K
3K
0.8V
3.47V
The soft-start time can be calculated by following equation:
TSS 75 C10 75 0.1(uF) 7.5ms
The over current protection that set by RSET to limit the max inductance current is:
VOCSET IOCSET RSET RDS(ON) IL 0.2
ISET
IL( CRITICAL )
RSET
IOCEST
RDS(ON)
0.2
ISET1
IL( CRITICAL )
R4 IOCSET
RDS(ON)
0.2
ISET2
IL( CRITICAL )
R5 IOCSET
RDS(ON)
0.2
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. 0.9
11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet FP5148.PDF ] | |
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