XCL206系列微直流降压转换器：集成化电源管理解决方案
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更新于2024-07-17
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"XCL206器件是一款微小型电源管理芯片，集成了电感和控制IC，封装尺寸仅为2.5mm×2.0mm，高度1.0mm，可在外部连接两个电容的情况下提供600mA的稳定输出电流。该芯片适用于移动电话、智能手机、蓝牙耳机等多种便携式电子设备。工作电压范围为2.0V到6.0V（XCL20xG系列为1.8V到6.0V），输出电压可内部设置在0.8V到4.0V之间，以0.05V为步进。XCL206采用3.0MHz的工作频率，内置0.42Ω的P通道驱动晶体管和0.52Ω的N通道开关晶体管。"
XCL206系列电源芯片是专为高效能、小体积应用设计的同步降压型直流-直流转换器。其独特之处在于将电感和控制集成电路集成在一个极小的封装中，大大减少了电路板空间的需求。这种微型化设计使得它成为便携式电子设备的理想选择，如移动电话、智能手机、蓝牙耳机、WiMAX PDA、MID、UMPC、便携式游戏机、数码相机和摄像机以及电子词典等。
在性能方面，XCL206能够提供高达600mA的输出电流，并且具有良好的效率特性。在不同的输入电压（例如5.5V、5.0V和4.2V）下，输出3.3V时，其效率曲线显示了出色的性能。此外，该芯片还支持绿色操作模式，旨在提高能效并降低功耗。
在应用电路中，XCL206通常需要与两个外部电容配合使用来配置电源。其工作电压范围广泛，适应性强，可以处理从2.0V到6.0V的输入电压（XCL20xG系列的输入电压范围稍有不同，为1.8V到6.0V）。输出电压可以在0.8V到4.0V之间灵活调整，步进精度为0.05V，这使得它可以满足多种不同的电源需求。
在硬件设计上，XCL206采用了3.0MHz的工作频率，这有助于减小外部滤波组件的尺寸，同时保持良好的电磁兼容性。芯片内部集成了P通道驱动晶体管（0.42Ω）和N通道开关晶体管（0.52Ω），这两个组件共同作用于降压转换过程，实现高效的能量转换。
XCL206是一款高效、紧凑的电源管理解决方案，特别适合对尺寸和能效有严格要求的便携式电子设备。其内置电感和控制IC的创新设计，以及宽泛的电压调节范围，使其在众多同类产品中脱颖而出，为工程师提供了更便捷的设计选项。
6/27
XCL205/XCL206/XCL207
Series
■ELECTRICAL CHARACTERISTICS (Continued)
●XCL205Cxx3AR/XCL206Cxx3AR/XCL207Cxx3AR/XCL205Cxx3CR/XCL206Cxx3CR/XCL207Cxx3CR, Ta=25℃
PARAMETER SYMBOL CONDITIONS MIN. TYP. MAX. UNITS
CIRCUIT
Output Voltage V
OUT
When connected to external components,
V
IN
= V
CE
=5.0V, I
OUT
=30mA
<E-1> <E-2> <E-3> V ①
Operating Voltage Range
V
IN
2.0 - 6.0 V ①
Maximum Output Current
I
OUTMAX
V
IN
=V
OUT(T)
+2.0V, V
CE
=1.0V
When connected to external components
(*9)
600 - - mA ①
UVLO Voltage V
UVLO
V
CE
=V
IN
,V
OUT
=0V,
Voltage which Lx pin holding “L” level
(*1, *11)
1.00 1.40 1.78 V ③
Supply Current (XCL205)
I
DD
V
IN
=V
CE
=5.0V, V
OUT
= V
OUT(T)
×1.1V
- 46 65
μA ②
Supply Current (XCL206, XCL207)
21 35
Stand-by Current I
STB
V
IN
=5.0V, V
CE
=0V, V
OUT
= V
OUT
(
T
)
×1.1V - 0 1.0 μA ②
Oscillation Frequency
f
OSC
When connected to external components,
V
IN
=V
OUT
(
T
)
+2.0V,V
CE
=1.0V, I
OUT
=100mA
2550 3000 3450 kHz ①
PFM Switching Current
(*12)
I
PFM
When connected to external components,
V
IN
=V
OUT
(
T
)
+2.0V, V
CE
= V
IN
, I
OUT
=1mA
<E-4> <E-5> <E-6> mA ⑩
PFM Duty Limit
(*12)
DTY
LIMIT_PFM
V
CE
= V
IN
= V
OUT
(
T
)
+1.0V, I
OUT
=1mA - 200 300 % ①
Maximum Duty Cycle MAXDTY V
IN
= V
CE
=5.0V, V
OUT
= V
OUT
(
T
)
×0.9V 100 - - % ③
Minimum Duty Cycle MINDTY V
IN
= V
CE
=5.0V, V
OUT
= V
OUT
(
T
)
×1.1V - - 0 % ③
Efficiency
(*2)
EFFI
When connected to external components,
V
CE
= V
IN
＝ V
OUT
(
T
)
+1.2V, I
OUT
= 100mA
- <E-7> - % ①
Lx SW "H" ON Resistance 1
R
LｘH
V
IN
= V
CE
= 5.0V, V
OUT
= 0V,IL
X
= 100mA
(*3)
- 0.35 0.55 Ω ④
Lx SW "H" ON Resistance 2
R
LｘH
V
IN
= V
CE
= 3.6V, V
OUT
= 0V,IL
X
= 100mA
(*3)
- 0.42 0.67 Ω ④
Lx SW "L" ON Resistance 1
R
LｘL
V
IN
= V
CE
= 5.0V
(*4)
- 0.45 0.65 Ω -
Lx SW "L" ON Resistance 2
R
LｘL
V
IN
= V
CE
= 3.6V
(*4)
- 0.52 0.77 Ω -
Lx SW "H" Leakage Current
(*5)
I
LEAKH
V
IN
= V
OUT
=5.0V, V
CE
=0V, L
X
=0V - 0.01 1.0 μA ⑨
Current Limit
(*10)
I
LIM
V
IN
= V
CE
= 5.0V, V
OUT
= V
OUT (T)
×0.9V
(*8)
900 1050 1350 mA ⑥
Output Voltage
Temperature Characteristics
△
V
OUT
/
(V
OUT
・△
Topr)
I
OUT
=30mA
-40℃≦Topr≦85℃
- ±100 - ppm/ ℃ ①
CE "H" Voltage V
CEH
V
OUT
=0V, Applied voltage to V
CE
,
Voltage changes Lx to “H” level
(*11)
0.65 - 6.0 V ③
CE "L" Voltage V
CEL
V
OUT
=0V, Applied voltage to V
CE
,
Voltage changes Lx to “L” level
(*11)
V
SS
- 0.25 V ③
PWM "H" Level Voltage
(*13)
V
PWMH
When connected to external components,
I
OUT
=1mA
(*6),
Voltage which oscillation
frequency becomes 2550kHz≦f
OSC
≦3450kHz
(*13)
- - V
IN
- 1.0 V ①
PWM "H" Level Voltage
(*13)
V
PWML
When connected to external components,
I
OUT
=1mA
(*6)
, Voltage which oscillation
frequency becomes f
OSC
＜2550kHz
(*13)
V
IN
-
0.25
- - V ①
CE "H" Current I
CEH
V
IN
= V
CE
=5.0V, V
OUT
= 0V - 0.1 - 0.1 μA ⑤
CE "L" Current I
CEL
V
IN
=5.0V, V
CE
= 0V, V
OUT
= 0V - 0.1 - 0.1 μA ⑤
Soft Start Time
t
SS
When connected to external components,
V
CE
=0V→V
IN
, I
OUT
=1mA
0.5 0.9 2.5 ms ①
Latch Time
t
LAT
V
IN
=V
CE
=5.0V, V
OUT
=0.8×V
OUT(T)
Short Lx at 1Ω resistance
(*7)
1.0 - 20 ms ⑦
Short Protection
Threshold Voltage
V
SHORT
Sweeping V
OUT
, V
IN
=V
CE
=5.0V, Short Lx at
1Ω resistance, V
OUT
voltage which Lx becomes “L”
level within 1ms
<E-8> <E-9> <E-10> V ⑦
C
L
Discharge
R
DCHG
V
IN
= 5.0V L
X
= 5.0V V
CE
= 0V V
OUT
= open 200 300 450 Ω ⑧
Inductance Value
L Test frequency=1MHz - 1.5 - μH-
Allowed Inductor Current I
DC
Δ
T=40
℃
- 1000 - mA -
Test conditions: Unless otherwise stated, VIN=5.0V, VOUT (T) = Nominal Voltage
NOTE:
*1: Including hysteresis operating voltage range.
*2: EFFI = { ( output voltage×output current ) / ( input voltage×input current) }×100
*3: ON resistance (Ω)= (VIN - Lx pin measurement voltage) / 100mA
*4: Design value
*5: When temperature is high, a current of approximately 10μA (maximum) may leak.
*6: The CE/MODE pin of the XCL207 series works also as an external switching pin of PWM control and PWM/PFM control. When the IC is in the
operation, control is switched to the automatic PWM/PFM switching mode when the CE/MODE pin voltage is equal to or greater than VIN minus
0.3V, and to the PWM mode when the CE/MODE pin voltage is equal to or lower than VIN minus 1.0V and equal to or greater than VCEH.
*7: Time until it short-circuits V
OUT with GND via 1Ωof resistor from an operational state and is set to Lx=0V from current limit pulse generating.
*8: When V
IN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
*9: When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
*10: Current limit denotes the level of detection at peak of coil current.
*11: “H”=VIN~VIN-1.2V, “L”=+0.1V~-0.1V
*12: IPFM and DTY
LIMIT_PFM
are defined only for the XCL206 and XCL207 series which have PFM control function. (Not for the XCL 205 series)
*13: VPWMH and VPWML are defined only for the XCL207 series. (They are not used in the XCL205/and XCL206 series)
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