參數(shù)資料
型號: SP6656ER3-L
元件分類: 穩(wěn)壓器
英文描述: 2 A SWITCHING REGULATOR, PDSO10
封裝: 2.50 X 2.40 MM, LEAD FREE, DFN-10
文件頁數(shù): 3/16頁
文件大?。?/td> 325K
代理商: SP6656ER3-L
11
Date: 3/6/06
SP6656, 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output
Copyright 2006 Sipex Corporation
Series R
Isat
Manufacturer
ohms
(A)
L x W
(mm)
Ht.
(mm)
Website
4.7
Murata LQH32CN4R7M53L
0.150
0.65
3.2x2.5
1.55
www.murata.com
4.7
Murata LQH31CN4R7M03L
0.65
0.34
3.2x1.6
1.8
www.murata.com
4.7
Murata LQH2MCN4R7M02L
0.80
0.30
2.0x1.6
0.9
www.murata.com
10
Murata LQH32CN100K53L
0.300
0.45
3.2x2.5
1.55
www.murata.com
10
TDK RLF5018T-100MR94
0.056
0.94
5.6x5.2
2.0
www.tdk.com
10
Coilcraft LPO6013-103K
0.300
0.70
6.0x5.4
1.3
www.coilcraft.com
22
Murata LQH32CN220K21
0.710
0.25
3.2x2.5
2.0
www.murata.com
22
TDK RLF5018T-220MR63
0.130
0.63
5.6x5.2
2.0
www.tdk.com
22
Coilcraft LPO6013-223K
0.520
0.45
6.0x5.4
1.3
www.coilcraft.com
ESR
Ripple
Current
Voltage
Capacitor
Manufacturer
ohms
(max)
(A) @
45C
L x W
(mm)
Ht.
(mm)
(V)
Type
Website
10
TDK C2012X5R0J106M
0.003
1.00
2.0x1.2
1.25
6.3
X5R Ceramic
www.tdk.com
10
Murata GRM21BR60J106KE01
0.003
1.00
2.0x1.2
1.25
6.3
X5R Ceramic
www.murata.com
4.7
TDK C2012X5R0J475M
0.005
1.00
2.0x1.2
1.25
6.3
X5R Ceramic
www.tdk.com
4.7
Murata GRM21BR60J475KE01
0.005
1.00
2.0x1.2
1.25
6.3
X5R Ceramic
www.murata.com
Note: Components highlighted in bold are those used on the SP6656 Evaluation Board.
Shielded Ferrite Core
Unshielded Ferrite Core
Unshielded Ferrite Core
Shielded Ferrite Core
Unshielded Ferrite Core
Inductor Specification
Unshielded Ferrite Core
INDUCTORS - SURFACE MOUNT
CAPACITORS - SURFACE MOUNT
Capacitance
(uF)
Inductance
(uH)
Size
Inductor Type
Size
Capacitor Specification
Manufacturer/Part No.
when the load current is less than half the
inductor ripple current defined by KON/L.
Thermal Shutdown
The converter will open both power switches
if the die junction temperature rises above
140°C. The die must cool down below 126°C
before the regulator is re-enabled. This fea-
ture protects the SP6656 and surrounding
circuitry from excessive power dissipation
due to fault conditions.
Shutdown/Enable Control
The EN pin of the device is a logic level
control pin that shuts down the converter
when logic is low, or enables the converter
when logic is high. When the converter is
shut down, the power switches are opened
and all circuit biasing is extinguished leav-
ing only junction leakage currents on supply
pins 1 and 2. After pin 5 is brought high to
enable the converter, there is a turn on
delay to allow the regulator circuitry to rees-
tablish itself. Power conversion begins with
the assertion of the internal reference ready
signal which occurs approximately 150s
after the enable signal is received.
Output Voltage Selection
The OVSI (Output Voltage Selection Input)
pin is internally driving a NMOS Gate which
Drain (OVSO pin) is used to short circuit RS
and then achieve a higher output voltage (
see table 1 for calculation, page 3)
External Feedback Pin
The FB pin 6 is compared to an internal
reference voltage of 0.8V to regulate the
SP6656 output. The output voltage can be
externally programmed within the range
+1.0V to +5.0V by tying a resistor from FB to
ground and FB to VOUT (pin7). See the
applications section for resistor selection
information.
Inductor Selection
The SP6656 uses a specially adapted mini-
mum on-time control of regulation utilizing a
precision comparator and bandgap refer-
ence. This adaptive minimum on-time con-
trol has the advantage of setting a constant
current ripple for a given inductor size.
Fromtheoperationssectionithasbeenshown:
Inductor Current Ripple, ILR ≈ KON
L
THEORY OF OPERATION
APPLICATION INFORMATION
For the typical SP6656 application circuit with
inductor size of 10H, and KON of 2V*sec,
the SP6656 current ripple would be about
200mA, and would be fairly constant for differ-
ent input and output voltages, simplifying the
selectionofcomponentsfortheSP6656power
circuit. Other inductor values could be se-
lected, as shown in Table 2 Components
Selection. Using a larger value than 10H in
an attempt to reduce output voltage ripple
would reduce inductor current ripple and may
Table 2 Component Selection
相關PDF資料
PDF描述
SP674AA 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28
SP674AB 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28
SP674AC 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28
SP674AS/883 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28
SP674AS 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP28
相關代理商/技術參數(shù)
參數(shù)描述
SP6656ER3-L/TR 功能描述:DC/DC 開關控制器 High Eff 400mA Synchronous RoHS:否 制造商:Texas Instruments 輸入電壓:6 V to 100 V 開關頻率: 輸出電壓:1.215 V to 80 V 輸出電流:3.5 A 輸出端數(shù)量:1 最大工作溫度:+ 125 C 安裝風格: 封裝 / 箱體:CPAK
SP6656ER3TR 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:High Efficiency 400mA Synchronous Buck Regulator with Dynamically Adjustable Voltage Output
SP6656ER-L 制造商:Exar Corporation 功能描述:BUCK REG 400MA 6656 DFN-10 6V
SP6659 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:1.5MHz, 600mA Synchronous Buck Regulator
SP6659_06 制造商:SIPEX 制造商全稱:Sipex Corporation 功能描述:1.5MHz, 600mA Synchronous Buck Regulator