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参数资料
| 型号： | XCL202B331BR-G |
| 厂商： | Torex Semiconductor Ltd |
| 文件页数： | 5/21页 |
| 文件大小： | 0K |
| 描述： | IC STEP DOWN DC/DC 3.3V CL2025 |
| 标准包装： | 1 |
| 系列： | XCL202 |
| 类型： | 非隔离（POL） |
| 输出数： | 1 |
| 电压 - 输入（最小）： | 2V |
| 电压 - 输入（最大）： | 6V |
| Voltage - Output 1： | 3.3V |
| 电流 - 输出（最大）： | 400mA |
| 特点： | 具有远程开/关功能和 UVLO |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 1008（2520 公制） |
| 尺寸/尺寸： | 0.10" L x 0.08" W x 0.04" H（2.5mm x 2.0mm x 1.04mm） |
| 包装： | 标准包装 |
| 工作温度： | -40°C ~ 85°C |
| 效率： | 92% |
| 其它名称： | 893-1173-6 |
XCL201/XCL202
Series
■ ELECTRICAL CHARACTERISTICS (Continued)
XCL201B181BR/XCL202B181BR, V OUT =1.8V, f OSC =1.2MHz, Ta=25 ℃
PARAMETER
SYMBOL
CONDITIONS
MIN.
TYP.
MAX.
UNITS CIRCUIT
Output Voltage
Operating Voltage Range
V OUT
V IN
When connected to external components,
V IN =V CE =5.0V, I OUT =30mA
1.764
2.0
1.800
-
1.836
6.0
V
V
①
①
Maximum Output Current
I OUTMAX
V IN =V OUT(E) +2.0V, V CE =1.0V
When connected to external components
(*8)
400
-
-
mA
①
UVLO Voltage
V UVLO
V CE =V IN ,V OUT =0V
Voltage which Lx pin holding “L” level
(*1, *10)
1.00
1.40
1.78
V
②
Supply Current (XCL201)
Supply Current (XCL202)
Stand-by Current
Oscillation Frequency
I DD
I STB
f OSC
V IN =V CE =5.0V, V OUT =V OUT(T) × 1.1V
V IN =5.0V, V CE =0V, V OUT =V OUT(T) × 1.1V
When connected to external components,
V IN =V OUT(T) +2.0V, V CE =1.0V , I OUT =100mA
-
-
-
1020
22
15
0
1200
50
33
1.0
1380
μ A
μ A
kHz
②
③
①
PFM Switching Current
(*11)
I PFM
When connected to external components,
V IN =V OUT(T) +2.0V, V CE =V IN , I OUT =1mA
120
160
200
mA
⑩
PFM Duty Limit
(*11)
DTY LIMIT_PFM
V CE =V IN =V OUT(T) +0.5V, I OUT =1mA
-
200
300
%
①
Efficiency
Lx SW "H" Leakage Current
V IN =V CE =5.0V, V OUT =0V, IL X =100mA
V IN =V CE =3.6V, V OUT =0V, IL X =100mA
V IN =V CE =5.0V
V IN =V CE =3.6V
Maximum Duty Cycle
Minimum Duty Cycle
(*2)
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
(*5)
MAXDTY
MINDTY
EFFI
R L ｘ H1
R L ｘ H2
R L ｘ L1
R L ｘ L2
I LeakH
V IN =V CE =5.0V, V OUT =V OUT (T) × 0.9V
V IN =V CE =5.0V, V OUT =V OUT (T) × 1.1V
When connected to external components,
V CE =V IN =V OUT (T) +1.2V, I OUT =100mA
(*3)
(*3)
(*4)
(*4)
V IN =V OUT =5.0V, V CE =0V, L X =0V
100
-
-
-
-
-
-
-
-
-
89
0.35
0.42
0.45
0.52
0.01
-
0
-
0.55
0.67
0.66
0.77
1.0
%
%
%
?
?
?
?
μ A
③
③
①
④
④
-
-
⑨
Current Limit
(*9)
I LIM
V IN =V CE = 5.0V, V OUT =V OUT (T) × 0.9V
(*7)
700
800
1000
mA
⑥
Voltage changes Lx to “H” level
Voltage changes Lx to “L” level
Short Lx at 1 ? resistance
Output Voltage
Temperature Characteristics
CE "H" Voltage
CE "L" Voltage
CE "H" Current
CE "L" Current
Soft Start Time
Latch Time
Short Protection
Threshold Voltage
C L Discharge
Inductance Value
Allowed Inductor Current
?△ V OUT /
(V OUT Topr)
V CEH
V CEL
I CEH
I CEL
t SS
t LAT
V SHORT
R DCHG
L
I DC
I OUT =30mA
-40 ℃≦ Topr ≦ 85 ℃
V OUT =0V, Applied voltage to V CE ,
(*10)
V OUT =0V, Applied voltage to V CE ,
(*10)
V IN =V CE =5.0V, V OUT =0V
V IN =5.0V, V CE =0V, V OUT =0V
When connected to external components,
V CE =0V → V IN , I OUT =1mA
V IN =V CE =5.0V, V OUT =0.8 × V OUT(T)
(*6)
Sweeping V OUT , V IN =V CE =5.0V, Short Lx at
1 ? resistance, V OUT voltage which Lx becomes
“L” level within 1ms
V IN =5.0V L X =5.0V V CE =0V V OUT =open
Test frequency=1MHz
Δ T=40 ℃
-
0.65
V SS
- 0.1
- 0.1
-
1.0
0.675
200
-
-
± 100
-
-
-
-
0.32
-
0.900
300
4.7
600
-
6.0
0.25
0.1
0.1
0.50
20
1.125
450
-
-
ppm/ ℃
V
V
μ A
μ A
ms
ms
V
?
μ H
mA
①
③
③
⑤
⑤
①
⑦
⑦
⑧
-
-
Including hysteresis operating voltage range.
EFFI={ ( output voltage×output current ) / ( input voltage×input current) }×100
ON resistance ( ? )=(V IN - Lx pin measurement voltage) / 100mA
Design value
When temperature is high, a current of approximately 10 μ A (maximum) may leak.
Time until it short-circuits V OUT with GND via 1 ? of resistor from an operational state and is set to Lx=0V from current limit pulse generating.
When V IN is less than 2.4V, limit current may not be reached because voltage falls caused by ON resistance.
When the difference between the input and the output is small, some cycles may be skipped completely before current maximizes.
Current limit denotes the level of detection at peak of coil current.
“H”=V IN ~V IN -1.2V, “L”=+0.1V~-0.1V
I PFM and DTY LIMIT_PFM are defined only for the XCL202 series which have PFM control function. (Not for the XCL201 series)
Test conditions: Unless otherwise stated, V IN =5.0V, V OUT (T) =Nominal Voltage
NOTE:
(*1)
(*2)
(*3)
(*4)
(*5)
(*6)
(*7)
(*8)
If current is further pulled from this state, output voltage will decrease because of P-ch driver ON resistance.
(*9)
(*10)
(*11)
5/21
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