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부품번호 | XC9258 기능 |
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기능 | 1.0A Synchronous Step-Down DC/DC Converters | ||
제조업체 | Torex Semiconductor | ||
로고 | |||
전체 27 페이지수
XC9257/XC9258 Series
COT Control, 1.0A Synchronous Step-Down DC/DC Converters
ETR05040-001
GENERAL DESCRIPTION
GreenOperation-compatible
The XC9257/XC9258 series is a group of synchronous-rectification type DC/DC converters with a built-in P-channel MOS driver
transistor and N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. Output voltage is internally
set in a range from 0.8V to 3.6V (accuracy: ±2.0%) increments of 0.05V. The device provides a high efficiency, stable power
supply with an output current of 1.0A to be configured using only a coil and two capacitors connected externally. Oscillation
frequency is set to 1.2MHz or 6.0MHz can be selected for suiting to your particular application.
As for operation mode HiSAT-COT (*) control excellent in transient response, the XC9257 series is PWM control, the XC9258
series is automatic PWM/PFM switching control, allowing fast response, low ripple and high efficiency over the full range of loads
(from light load to heavy load).
During stand-by, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. As for the soft-start function
as fast as 0.3ms in typical for quick turn-on. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel MOS
driver transistor is forced OFF when input voltage becomes 2.00V or lower. The B types integrate CL High Speed discharge
function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge.
Two types of package SOT-25, USP-6C are available.
(*) HiSAT-COT is an original Torex term for High Speed Transient Response.
APPLICATIONS
FEATURES
Smart phones / Mobile phones
Input Voltage Range
Output Voltage Range
: 2.5V 5.5V
: 0.8V 3.6V (±2.0%)
Bluetooth
Oscillation Frequency
: 1.2MHz, 6.0MHz
Portable game consoles
Digital still cameras / Camcorders
Output Current
Control Methods
: 1A
: HiSAT-COT Control
100% Duty Cycle
Point-of-Load (POL)
Wearable devices
Protection Circuits
PWM Control (XC9257)
PWM/PFM Auto (XC9258)
: Thermal Shutdown
Current Limit (Pendent character)
Short Circuit Protection (Type B)
Functions
: Soft-Start
UVLO
CL High Speed Discharge (Type B)
Capacitor
: Ceramic Capacitor
Operating Ambient Temperature : - 40
+ 105
Packages
: SOT-25, USP-6C
Environmentally Friendly
: EU RoHS Compliant, Pb Free
TYPICAL APPLICATION CIRCUIT
TYPICAL PERFORMANCE
CHARACTERISTICS
XC9257B18C/XC9258B18C
L =LTF5022T-4R7N2R0(4.7 H)
CIN = 10 F(GRM155R61A106M) CL = 10
100
F(GRM155R61A106M
90
80
70
60
50
40
30
20
10
0
0.1
1 10 100
Output Current: IOUT (mA)
1000
1/27
XC9257/XC9258 Series
PIN CONFIGURATION
* The dissipation pad for the USP-6C package should be solder-plated in recommended mount pattern and metal masking so
as to enhance mounting strength and heat release. If the pad needs to be connected to other pins, it should be connected
to the GND (No. 2 and 5) pin.
PIN ASSIGNMENT
PIN NUMBER
SOT-25 USP-6C
16
2 2,5
34
43
51
PIN NAME
VIN
VSS
CE
VOUT
Lx
FUNCTIONS
Power Input
Ground
Chip Enable
Output Voltage Monitor
Switching Output
FUNCTION
CE PIN Function
PIN NAME
SIGNAL
L
CE
H
Please do not leave the CE pin open.
STATUS
Stand-by
Active
4/27
4페이지 ELECTRICAL CHARACTERISTICS (Continued)
SPEC Table
NOMINAL
OUTPUT
VOLTAGE
<E-1>
VOUT
<E-2>
<E-3>
<C-1>
tONmin
fOSC = 1.2MHz
<E-5> <E-6> <E-7>
fOSC = 6.0MHz
<E-5> <E-6> <E-7>
VOUT(T)
MIN. TYP. MAX. VIN
MIN. TYP. MAX. MIN. TYP. MAX.
0.80 0.784 0.800 0.816 2.70 173 247 321
16
53
91
0.85 0.833 0.850 0.867 2.70 184 262 341
18
57
95
0.90 0.882 0.900 0.918 2.70 194 278 361
21
60
99
0.95 0.931 0.950 0.969 2.70 205 293 381
23
63 104
1.00 0.980 1.000 1.020 2.70 216 309 401
26
67 108
1.05 1.029 1.050 1.071 2.70 227 324 421
29
70 112
1.10 1.078 1.100 1.122 2.70 238 340 441
31
73 115
1.15 1.127 1.150 1.173 2.70 248 355 461
35
77 119
1.20 1.176 1.200 1.224 2.70 259 370 481
38
80 122
1.25 1.225 1.250 1.275 2.70 270 386 502
41
83 126
1.30 1.274 1.300 1.326 2.70 281 401 522
45
87 129
1.35 1.323 1.350 1.377 2.70 292 417 542
48
90 132
1.40 1.372 1.400 1.428 2.70 302 432 562
52
93 135
1.45 1.421 1.450 1.479 2.70 313 448 582
56
97 137
1.50 1.470 1.500 1.530 2.70 324 463 602 60 100 140
1.55 1.519 1.550 1.581 2.70 335 478 622 60 100 140
1.60 1.568 1.600 1.632 2.70 346 494 642 60 100 140
1.65 1.617 1.650 1.683 2.75 350 500 650 60 100 140
1.70 1.666 1.700 1.734 2.83 350 500 650 60 100 140
1.75 1.715 1.750 1.785 2.92 350 500 650 60 100 140
1.80 1.764 1.800 1.836 3.00 350 500 650 60 100 140
1.85 1.813 1.850 1.887 3.08 350 500 650 60 100 140
1.90 1.862 1.900 1.938 3.17 350 500 650 60 100 140
1.95 1.911 1.950 1.989 3.25 350 500 650 60 100 140
2.00 1.960 2.000 2.040 3.33 350 500 650 60 100 140
2.05 2.009 2.050 2.091 3.42 350 500 650 60 100 140
2.10 2.058 2.100 2.142 3.50 350 500 650 60 100 140
2.15 2.107 2.150 2.193 3.58 350 500 650 60 100 140
2.20 2.156 2.200 2.244 3.67 350 500 650 60 100 140
2.25 2.205 2.250 2.295 3.75 350 500 650 60 100 140
2.30 2.254 2.300 2.346 3.83 350 500 650 60 100 140
2.35 2.303 2.350 2.397 3.92 350 500 650 60 100 140
2.40 2.352 2.400 2.448 4.00 350 500 650 60 100 140
2.45 2.401 2.450 2.499 4.08 350 500 650 60 100 140
2.50 2.450 2.500 2.550 4.17 350 500 650 60 100 140
2.55 2.499 2.550 2.601 4.25 350 500 650 60 100 140
2.60 2.548 2.600 2.652 4.33 350 500 650 60 100 140
2.65 2.597 2.650 2.703 4.42 350 500 650 60 100 140
2.70 2.646 2.700 2.754 4.50 350 500 650 60 100 140
XC9257/XC9258
Series
7/27
7페이지 | |||
구 성 | 총 27 페이지수 | ||
다운로드 | [ XC9258.PDF 데이터시트 ] |
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구매 문의 | 일반 IC 문의 : 샘플 및 소량 구매 ----------------------------------------------------------------------- IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한 광범위한 전력 반도체를 판매합니다. 전력 반도체 전문업체 상호 : 아이지 인터내셔날 사이트 방문 : [ 홈페이지 ] [ 블로그 1 ] [ 블로그 2 ] |
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DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |