ETC XC6365

________________________________________________________________________________________________________________ ●
XC6365/XC6366系列　PWM、PWM/PFM切换降压DC/DC控制器
概　要
特　点
XC6365/XC6366系列是内置高速低通态电阻驱动器的通用高频
降压DC/DC控制器集成电路。使用晶体管、线圈、二极管和电
容器共4种外置元件，可构建输出电流为1A以上的高效率降压
DC/DC转换器。
该器件可在1.5V～6.0V(精度±2.5％)范围内，以0.1V的间隔
进行设定(VOUT型)。并且，除了VOUT型之外，还备有内置1.0V
的基准电压源，可以外置元件任意设定输出电压的型号(FB
型)。
因开关频率高达300kHz，可使用小型外置元件。
在小负载时，PWM／PFM切换控制型XC6366系列以PFM工作模式
进行工作。因此，在从小负载至大输出电流的整个负载范围内，
达到高效率。
软启动时间有，在内部设定为10ms的型号(A、B型)，以及可用
外置电阻和电容器进行调整的的型号(C、D型)。
使用待机功能，可停止工作使电流消耗达到0.5µA以下(CE端
"L")。
内置U.V.L.O.功能，当输入电压在规定电压以下时，会强制性
地将外置晶体管断开。
引脚排列
输入电压范围
输出电压范围
：2.2V～10V
：在1.5V～6.0V范围内，可以0.1V间隔
进行设定。
设定电压精度±2.5％
工作频率
：300kHz±15％
客户产品180、500kHz
最大输出电流
：1.0A以上(VIN＝5.0V、VOUT＝3.0V)
高效率
：92％(TYP.)
待机功能
：ISTB＝0.5µA(max.)
备有软启动时间外部设定型
备有输出电压内部设定型(VOUT型)和外部设定型(FB型)
SOT-25封装
引脚说明
VOUT
CE
(FB)
5
4
1
2
3
EXT/
VDD
GND
SOT-25
(TOPVIEW)
引脚序号
1
2
3
符号
EXT/
VDD
GND
4
CE
5
VOUT
(FB)
功　能
连接外置晶体管
电源
接地
停机控制
(C、D 型：软启动外部设定、
兼软启动电容器连接)
输出电压监测
(B、D 型：输出电压外部设定)
电路框图
(1) XC6365、XC6366系列　A、C型(VOUT型)
Phase
Compensation
VOUT
ErrorAmp.
+
ErrorAmp.
-
PWM/PFM
Controler
FB
Buffer,
Driver
-
Vrefwith
SoftStart,
CE
Phase
Compensation
VDD
PWM
Comparator
+
CE
(2) XC6365、XC6366系列　B、D型(FB型)
RampWave
Generator,
OSC
VDD
PWM
Comparator
+
+
Buffer,
Driver
-
EXT/
-
GND
CE
Vrefwith
SoftStart,
CE
PWM/PFM
Controler
RampWave
Generator,
OSC
EXT/
GND
47
４．DC/DC转换器 __________________________________________________________________________________________
选择指南
开始
软启动内部设定
输出电压内部设定(VOUT 型)
XC6365A，XC6366A
输出电压外部设定(FB 型)
XC6365B，XC6366B
软启动外部设定
输出电压内部设定(VOUT 型)
XC6365C，XC6366C
输出电压外部设定(FB 型)
XC6365D，XC6366D
产品型号定义
ＸＣ６３６５①②③④⑤⑥
ＸＣ６３６６①②③④⑤⑥
XC6365系列　PWM工作模式
VOUT/FB
软启动
符号
A
VOUT
内部设定
B
FB
内部设定
①
C
VOUT
外部设定
D
FB
外部设定
② 输出电压值，但FB型（B、D型）时：②＝1、③＝0
③
(例)输出为3.0V型时　②＝3、③＝0
3 工作频率
300kHz
5
500kHz(客户)
④
2
180kHz(客户)
⑤
M 封装
SOT-25
R 凹凸带
标准插入
⑥
L 凹凸带
反向插入
XC6366系列　PWM/PFM切换控制
VOUT/FB
软启动
符号
A
VOUT
内部设定
B
FB
内部设定
①
C
VOUT
外部设定
D
FB
外部设定
②
输出电压值，但FB型（B、D型）时：②＝1、③＝0
③
(例)3.0V输出型时　②＝3、③＝0
3 工作频率
300kHz
5
500kHz(客户)
④
2
180kHz(客户)
⑤
M 封装
SOT-25
R 凹凸带
标准插入
⑥
L 凹凸带
反向插入
48
☆GO-Compatible
◆Input Voltage Range : 2.2~10.0V
◆Output Voltage Range : 1.5~6.0V (±2.5%)
◆Oscillator Frequency : 300kHz (±15%)
◆Maximum Duty Ratio : 100%
◆High Efficiency
: 92%
◆PWM/PFM Switching Control (XC6366)
◆SOT-25 Package
■APPLICATIONS
■GENERAL DESCRIPTION
■FEATURES
The XC6365/66 series are multi-functional step-down DC/DC
converters with built-in high speed, low ON resistance drivers.
An output current of more than 1A is possible using an
externally connected transistor, coil, diode and capacitor.
Output voltage is programmable in 100mV increments between
1.5V to 6.0V (VOUT) (±2.5% accuracy). Further, with 1.0V of
standard voltage supply internal and using externally
connected components, output voltage can be set up freely
(FB). With a 300kHz switching frequency, the size of the
external components can be reduced.
Control switches from PWM to PFM during light loads with the
XC6366 (PWM/PFM switchable) and the series is highly
efficient from light loads to large output currents.
In relation to soft-start time, both internally set-up 10msec
types (A, B) and external resistor or capacitor regulated types
(C, D) are available.
During stand-by time (CE pin "Low" ), current consumption is
reduced to less than 0.5μA.
With U.V.L.O. internal, the external transistor will be forcibly
switched off if used below the stipulated voltage.
Input Voltage Range : 2.2V ~ 10V (VOUT type)
■TYPICAL APPLICATION CIRCUIT
XC6365 6366 ETR0501_001.doc
●Electronic information organizers
●Palmtops
●Cellular and portable phones
●Portable audio systems
●Various multi-function power supplies
Output Voltage Range : 1.5V ~ 6.0V programmable in
100mV increments (±2.5%)
Oscillation Frequency : 300kHz (±15%)
: Custom products for 180, 500kHz
Output Current
: More than 1.0A
(VIN=5.0V, VOUT=3.0V)
High Efficiency
: 92% (TYP.)
Stand-by Capability : ISTB=0.5μA (MAX.)
Soft-start time set-up externally type possible
Internally set-up output voltage type possible (VOUT)
Externally set-up output voltage type possible (FB)
Package
: SOT-25
■TYPICAL PERFORMANCE
CHARACTERISTICS
703
XC6365/6366 Series
■PIN CONFIGURATION
■PIN ASSIGNMENT
PIN NUMBER
PIN NAME
FUNCTION
1
2
3
EXT/
VDD
GND
4
CE
5
VOUT (FB)
External Transistor Connection
Power Supply
Ground
Chip Enable Soft-Start Capacitor Connection
with Soft-Start Externally Set-Up Types (C, D)
Output Voltage Monitor FB with Externally
Set-Up Types (B, D)
■PRODUCT CLASSIFICATION
●Selection Guide
704
XC6365/6366
Series
■PRODUCT CLASSIFICATION (Continued)
●Ordering Information
XC6365①②③④⑤⑥
XC6366①②③④⑤⑥
DESIGNATOR
①
② ③
④
PWM control
PWM/PFM switching control
DESCRIPTION
Type of DC/DC Converter
Output Voltage
Oscillation Frequency
⑤
Package
⑥
Device Orientation
SYMBOL
DESCRIPTION
A
: VOUT type: Internally set-up, soft-start internally set-up
B
: FB type: Externally set-up, soft-start internally set-up
C
: VOUT type: Internally set-up, soft-start externally set-up
D
: FB type: Externally set-up, soft-start internally set-up
15～60
: VOUT type: 3.0V output → ②=3, ③=0
10
: FB type: 10 fixed → ②=1, ③=0 fixed
3
: 300kHz
5
: 500kHz (custom)
2
: 180kHz (custom)
M
: SOT-25 (SOT-23-5)
R
: Embossed tape, standard feed
L
: Embossed tape, reverse feed
■PACKAGING INFORMATION
●SOT-25
705
XC6365/6366 Series
■MARKING RULE
①Represents product classification
5
①
1
4
②
③ ④
2
3
SOT-25
(TOP VIEW)
MARK
PRODUCT SERIES
MARK
PRODUCT SERIES
A
B
C
D
XC6365A
XC6365B
XC6365C
XC6365D
K
L
M
N
XC6366A
XC6366B
XC6366C
XC6366D
②Represents integer of output voltage and oscillation frequency
OUTPUT VOLTAGE
1.x
2.x
3.x
4.x
5.x
6.x
100
B
C
D
E
F
H
OSCILLATION FREQUENCY (kHz)
180
300
1
2
3
4
5
6
1
2
3
4
5
6
500
B
C
D
E
F
H
③Represents decimal number of output voltage and oscillation frequency
OUTPUT VOLTAGE
100
OSCILLATION FREQUENCY (kHz)
180
300
0
1
2
3
4
5
0
1
2
3
4
5
A
B
C
D
E
F
A
B
C
D
E
F
x.6
x.7
x.8
x.9
6
7
8
9
6
7
8
9
H
K
L
M
H
K
L
M
④Represents production lot number
0 to 9, A to Z repeated (G, I, J, O, Q, W excepted)
706
500
x.0
x.1
x.2
x.3
x.4
x.5
XC6365/6366
Series
■BLOCK DIAGRAMS
XC6365, XC6366 Series A, C type (VOUT)
XC6365, XC6366 Series B, D type (FB)
707
XC6365/6366 Series
■ABSOLUTE MAXIMUM RATINGS
Ta = 25℃
PARAMETER
VIN Pin Voltage
VOUT Pin Voltage
FB Pin Voltage
CE Pin Voltage
EXT/ Pin Voltage
EXT/ Pin Current
Power Dissipation
Operating Temperature Range
Storage Temperature Range
SYMBOL
VDD
VOUT
VFB
VCE
VEXT/
RATINGS
-0.3 ~ +12
-0.3 ~ VIN +0.3
-0.3 ~ VIN +0.3
-0.3 ~ VIN +0.3
-0.3 ~ VIN +0.3
±100
150
-30 ~ +80
-40 ~ +125
IEXT/
Pd
Topr
Tstg
UNITS
V
V
V
V
V
mA
mW
℃
℃
Note: Voltage is all ground standardized.
■ELECTRICAL CHARACTERISTICS
XC6365A333MR, XC6366A333MR
PARAMETER
SYMBOL
Output Voltage
VOUT
Maximum Input Voltage
VIN
U.V.L.O. Voltage
VUVLO
(Minimum Operating Voltage)
Supply Current 1
IDD1
Supply Current 2
IDD2
Stand-by Current
ISTB
Oscillation Frequency
FOSC
Maximum Duty Ratio
PFM Duty Ratio
MAXDTY
PFMDTY
CE "High" Voltage
VCEH
CE "Low" Voltage
VCEL
EXT "High" ON Resistance
EXT "Low" ON Resistance
REXTBH
REXTBL
Efficiency
EFFI
Soft-Start Time
TSS
(VOUT=3.3V,
Same as IDD1,
Voltage which EXT/pin voltage holding “H” level
No external components, CE=VDD, VOUT=0V
No external components,
XC6365
CE=VOUT=VDD
XC6366
No external components, CE=VOUT=0V
Measuring of EXT/ waveform,
VIN=output voltage + 0.1V
No load (XC6366 only)
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “L” level
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “H” level
Same as IDD2, VEXT/=VDD-0.4V
Same as IDD1, VEXT/=0.4V
Use of a XP162A12A6 transistor
recommended
Connect RSS, CSS, CE, 0V→ 3.0V
(When VIN≦3.0V, VIN=3.0V)
Conditions: 1. Unless otherwise stated, connect external components. VIN=VDD = 5.0V, IOUT = 220mA
2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ
708
Ta=25℃
FOSC=300kHz)
CONDITIONS
MIN.
3.218
10.0
TYP.
3.300
-
MAX. UNITS
3.383
V
V
0.9
-
2.2
V
-
57
57
15
-
102
102
27
0.5
μA
μA
μA
μA
255
300
345
kHz
100
15
25
35
%
%
0.65
-
-
V
-
-
0.20
V
-
16
14
22
19
μA
μA
-
92
-
%
5
10
20
msec
XC6365/6366
Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6365A503MR, XC6366A503MR
PARAMETER
SYMBOL
Output Voltage
VOUT
Maximum Input Voltage
VIN
U.V.L.O. Voltage
VUVLO
(Minimum Operating Voltage)
Supply Current 1
IDD1
Supply Current 2
IDD2
Stand-by Current
ISTB
Oscillation Frequency
FOSC
Maximum Duty Ratio
PFM Duty Ratio
MAXDTY
PFMDTY
CE "High" Voltage
VCEH
CE "Low" Voltage
VCEL
EXT "High" ON Resistance
EXT "Low" ON Resistance
REXTBH
REXTBL
Efficiency
EFFI
Soft-Start Time
TSS
Conditions:
(VOUT=5.0V, FOSC=300kHz)
CONDITIONS
Same as IDD1,
Voltage which EXT/pin voltage holding “H” level
No external components, CE=VDD, VOUT=0V
No external components,
XC6365
CE=VOUT=VDD
XC6366
No external components, CE=VOUT=0V
Measuring of EXT/ waveform,
VIN=output voltage + 0.1V
No load (XC6366 only)
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “L” level
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “H” level
Same as IDD2, VEXT/=VIN-0.4V
Same as IDD1, VEXT/=0.4V
Use of a XP162A12A6
transistor recommended
Connect RSS, CSS, CE, 0V→ 3.0V
(When VIN≦3.0V, VIN=3.0V)
Ta=25℃
MIN.
4.875
10.0
TYP.
5.000
-
MAX. UNITS
5.125
V
V
0.9
-
2.2
V
-
67
67
16
-
122
122
29
0.5
μA
μA
μA
μA
255
300
345
kHz
100
15
25
35
%
%
0.65
-
-
V
-
-
0.20
V
-
12
10
17
14
μA
μA
-
93
-
%
5
10
20
msec
1. Unless otherwise stated, connect external components. VIN=VDD = 7.5V, IOUT = 330mA
2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ
709
XC6365/6366 Series
■ELECTRICAL CHARACTERISTICS (Continued)
XC6365A103MR, XC6366A103MR
PARAMETER
SYMBOL
Output Voltage
VOUT
Maximum Input Voltage
VIN
U.V.L.O. Voltage
VUVLO
(Minimum Operating Voltage)
Supply Current 1
IDD1
Supply Current 2
IDD2
Stand-by Current
ISTB
Oscillation Frequency
FOSC
Maximum Duty Ratio
PFM Duty Ratio
MAXDTY
PFMDTY
CE "High" Voltage
VCEH
CE "Low" Voltage
VCEL
EXT "High" ON Resistance
EXT "Low" ON Resistance
REXTBH
REXTBL
Efficiency
EFFI
Soft-Start Time
TSS
(VOUT=3.0V, FOSC=300kHz)
CONDITIONS
Same as IDD1,
Voltage which EXT/pin voltage holding “H” level
No external components, CE=VIN, VOUT=0V
No external components,
XC6365
CE=VDD, FB=1.2V
XC6366
No external components, CE=FB=0V
Measuring of EXT/ waveform,
VIN=output voltage + 0.1V
No load (XC6366 only)
No external components, FB=0V,
Voltage which EXT/pin voltage holding “L” level
No external components, VOUT=0V,
Voltage which EXT/pin voltage holding “H” level
Same as IDD2, VEXT/=VIN-0.4V
Same as IDD1, VEXT/=0.4V
Use of a XP162A12A6
transistor recommended
Connect RSS, CSS, CE, 0V→ 3.0V
(When VIN≦3.0V, VIN=3.0V)
Conditions: 1. Unless otherwise stated, connect external components.
VIN=VDD = 4.5V, IOUT = 200mA
2. XC6365/66C series external components: CSS=0.033μF, RSS=470kΩ
3. RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100ppF
710
Ta=25℃
MIN.
2.975
10.0
TYP.
3.000
-
MAX. UNITS
3.075
V
V
0.9
-
2.2
V
-
55
55
15
-
100
100
27
0.5
μA
μA
μA
μA
255
300
345
kHz
100
15
25
35
%
%
0.65
-
-
V
-
-
0.20
V
-
17
15
24
20
μA
μA
-
92
-
%
5
10
20
msec
XC6365/6366
Series
■TEST CIRCUITS
Circuit 1. XC6365A, XC6366A
Circuit 2. XC6365B, XC6366B
Circuit 3. XC6365C, XC6366C
711
XC6365/6366 Series
■TEST CIRCUITS (Continued)
Circuit 4. XC6365D, XC6366D
Circuit 5. XC6365A, XC6366A (when used with a PNP transistor)
Circuit 6. XC6365B, XC6366B (when used with a PNP transistor)
712
XC6365/6366
Series
■TEST CIRCUITS (Continued)
Circuit 7. XC6365C, XC6366C (when used with a PNP transistor)
Circuit 8. XC6365D, XC6366D (when used with a PNP transistor)
Recommended Components
Tr : XP162A12A6PR (Torex P-channel Power MOSFET)
Please use a PNP transistor where VIN < 2.5V
L
: 22μH (CR54, SUMIDA, FOSC=300kHz)
47μH (CR75, SUMIDA, FOSC=180kHz)
10μH (CR54, SUMIDA, FOSC=500kHz)
SD : MA2Q735 (Schottky Diode, MATSUSHITA)
CL :10V, 47μF (Tantalum capacitor, NICHICHEMl MCE)
CIN :16V 10μF (Tantalum capacitor, NICHICHEMI MCE)
PNP Tr. Type
Tr : 2SA1213 (TOSHIBA)
RB : 500Ω(Adjust according to load and Tr. hFE levels)
CB : 2200pF (Ceramic Type)
Set up so that CB≦1 / (2π x RB x FOSC x 0.7)
C, D type (soft-start externally set-up)
CSS : 0.033μF (Ceramic Capacitor)
RSS : 470kΩ(C type), 330kΩ(D type)
B, D type (FB type)
RFB : Set up so that RFB1 / RFB2 = VOUT – 1
(VOUT = setting output voltage),
RFB1 = RFB2 ≦ 2MΩ
CFB : Set up so that fzfb = 1÷(2π x CFB x RFB1) is within
the 0.5 to 20kHz range (10kHz conventional)
Adjustments necessary in respect of L, CL.
e.g. : VOUT = 3.0V
RFB1 = 400kΩ, RFB2 = 200kΩ, CFB = 100pF
713
XC6365/6366 Series
■NOTES ON USE
1. Take ample care to ensure that none of the IC's, nor the external component's, absolute maximum ratings are exceeded.
2. Be extremely careful when selecting parts and do not limit your reference to the specifications and characteristics for the
DC/DC converter alone. The IC also depends, to a great extent, upon the external components.
3. Arrange the peripherals in the environs of the IC. In order to reduce wiring impedance, use short, thick wires. In particular,
wire the load capacitor as close as possible and strengthen the ground wiring sufficiently.
4. Ground current during switching may cause the IC's operations to become unstable due to changes in ground voltage, so
please strengthen the IC's GND pin surroundings.
●External Components
1. Setting soft start time
To set a longer soft start time, please use XC6365C or XC6365D series which soft start function is externally set up.
For the measurement of soft start time TSS, the time is needed to be between the maximum and the minimum value indicated
in the chart below. Please set a soft start capacitor CSS according to the application.
2. Setting RFB1 and CFB
fzfb=1 ÷ (2 π × CFB × RFB1)
As the combination of RFB1 and CFB enable to set fzfb between 0.5kHz to 20kHz, within the realm of fzfb=0.5kHz to
fzfb=20kHz as the chart below can be effective.
Under normal condition, please set the combination to configure around fzfb=10kHz.
714
XC6365/6366
Series
■TYPICAL PERFORMANCE CHARACTERISTICS
715
XC6365/6366 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(Continued)
716
XC6365/6366
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
717
XC6365/6366 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(Continued)
718
XC6365/6366
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
719
XC6365/6366 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
(Continued)
720
XC6365/6366
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
721
XC6365/6366 Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
722
XC6365/6366
Series
■TYPICAL PERFORMANCE CHARACTERISTICS (Continued)
723