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XCM517 데이터시트 PDF




Torex Semiconductor에서 제조한 전자 부품 XCM517은 전자 산업 및 응용 분야에서
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부품번호 XCM517 기능
기능 600mA Synchronous Dual Output Step-Down DC/DC Converters
제조업체 Torex Semiconductor
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XCM517 데이터시트, 핀배열, 회로
XCM517 Series
600mA Synchronous Dual Output Step-Down DC/DC Converters
www.DataSheet4U.com
ETR2425-007
GENERAL DESCRIPTION
The XCM517 series is a multi combination module IC which comprises of two 600mA driver transistor built-in synchronous
step–down DC/DC converter. The XCM517 series is available in an ultra small package USP-12B01 suited for space
conscious applications.
The XCM517 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.42 P-channel driver
transistor and 0.52 N-channel switching transistor, designed to allow the use of ceramic capacitors. The ICs enable a high
efficiency, stable power supply with an output current of 600mA to be configured using only a coil and two capacitors connected
externally. Operating voltage range is from 2.7V to 6.0V. With the built-in oscillator, either 1.2MHz or 3.0MHz can be selected
for suiting to your particular application. As for operation mode, the XCM517xA / XCM517xB series are PWM control, the
XCM517xC / XCM517xD series are 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).
The soft start and current control functions are internally optimized. During stand-by, all circuits are shutdown to reduce
current consumption to as low as 1.0 A or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal
P-channel driver transistor is forced OFF when input voltage becomes 1.4V or lower.
APPLICATIONS
Mobile phones, Smart phones
Bluetooth equipment
Personal Device Assistances
Portable games
Digital still cameras, camcorders
TYPICAL APPLICATION CIRCUIT
FEATURES
P-ch Driver Transistor Built-In : ON resistance 0.42
N-ch Driver Transistor Built-In : ON resistance 0.52
Input Voltage Range
: 2.7V ~ 6.0V
High Efficiency
: 92% (TYP.)
Output Current
: 600mA
Oscillation Frequency
: 1.2MHz, 3.0MHz (+15%)
Maximum Duty Cycle
Soft-Start Circuit Built-In
Current Limiter Circuit Built-In
: 100%
(Constant Current & Latching)
Ceramic Capacitor Compatible
Control Methods
: PWM (XCM517xA / XCM517xB)
PWM/PFM Auto (XCM517xC / XCM517xD)
*Performance depends on external components and wiring on the PCB.
Combination of voltage
XCM517xx01D
1 ch
1.2V
2ch
1.8V
XCM517xx02D
XCM517xx03D
XCM517xx06D
1.2V
1.8V
1.5V
3.3V
3.3V
1.8V
XCM517xx07D
1.5V
3.3V
*The other combination of voltage is semi-custom.
VOUT1 1
AGND1 2
EN1 3
VIN2 4
PGND2 5
Lx2 6
VOUT
Lx
XC9235/XC9236
AGND
PGND
CE VIN
VIN CE
XC9235/XC9236
Lx VOUT
(TOP VIEW)
12 Lx1
11 PGND1
10 VIN1
9 EN2
8 AGND2
7 VOUT2
* The dotted lines in the circuit indicates the connection using through-holes at the
backside of the PC board
1/28




XCM517 pdf, 반도체, 판매, 대치품
XCM517 Series
BLOCK DIAGRAMS
XC9235A / XC9236A Series
VOUT
VIN
VSS
Phase
Compensation
R2 Error Amp.
R1
VSHORT
Vref with
Soft Start,
CE
PWM/PFM
Selector
Current Feedback
Current Limit
PWM
Comparator
Logic
Synch
Buffer
Drive
UVLO
R3
UVLO Cmp
R4
Ramp Wave
Generator
OSC
CE/MODE
Control
Logic
www.DataSheet4U.com
Lx
CE
XC9235B / XC9236B Series
Available with CL Discharge, High Speed Soft-Start
VOUT
VIN
VSS
Phase
Compensation
R2 Error Amp.
R1
VSHORT
Vref with
Soft Start,
CE
PWM/PFM
Selector
UVLO
R3
UVLO Cmp
R4
Current Feedback
Current Limit
PWM
Comparator
Logic
Synch
Buffer
Drive
Ramp Wave
Generator
OSC
CE/MODE
Control
Logic
CE/
Lx
CE
NOTE: The signal from CE/MODE Control Logic to PWM/PFM Selector is being fixed to "L" level inside,
and XC9235 series chooses only PWM control.
The signal from CE/MODE Control Logic to PWM/PFM Selector is being fixed to "H" level inside,
and XC9236 series chooses only PWM/PFM automatic switching control.
Diodes inside the circuit are ESD protection diodes and parasitic diodes.
*Diodes inside the circuit are an ESD protection diode and a parasitic diode.
MAXIMUM ABSOLUTE RATINGS
PARAMETER
VIN1 / VIN2 Voltage
Lx1 / Lx2 Voltage
VOUT1 / VOUT2 Voltage
EN1 / EN2 Voltage
Lx1 / Lx2 Current
Power Dissipation (Ta=25 ) USP-12B01
Junction Temperature
Operating Temperature Range
Storage Temperature Range
SYMBOL
VIN1 / VIN2
VLx1 / VLx2
VOUT1 / VOUT2
VEN1 / VEN2
ILx1 / ILx2
Pd
Tj
Topr
Tstg
RATINGS
- 0.3 6.5
- 0.3 VIN1 + 0.3 or 6.5
- 0.3 6.5
- 0.3 6.5
±1500
150
125
- 40 + 85
- 55 + 125
UNITS
V
V
V
V
mA
mW
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XCM517 전자부품, 판매, 대치품
XCM517
www.DataSheet4US.coemries
ELECTRICAL CHARACTERISTICS (Continued)
XCM517Bx, 1ch Block / 2ch Block VOUT=1.8V, fOSC=1.2MHz, Ta=25
PARAMETER
SYMBOL
CONDITIONS
MIN. TYP. MAX. UNITS CIRCUIT
Output Voltage
VOUT
When connected to external components,
VIN=VEN=5.0V, IOUT1=30mA
1.764 1.800 1.836 V
Operating Voltage Range
VIN
2.7 -
6.0 V
Maximum Output Current
IOUTMAX
When connected to external components,
VIN=VOUT(E)+2.0V, VEN=1.0V (*8)
600 -
- mA
UVLO Voltage
VUVLO
VEN=VIN,VOUT=0V,
Voltage which Lx pin holding “L” level (*1, *10)
1.00 1.40 1.78
V
Supply Current
IDD
VIN=VEN=5.0V, VOUT=VOUT(E)×1.1V
(XCM517BA)
(XCM517BC)
-
-
22 50
15 33
A
Stand-by Current
ISTB VIN=5.0V, VEN=0V, VOUT=VOUT(E)×1.1V
- 0 1.0 A
Oscillation Frequency
fOSC
When connected to external components,
VIN=VOUT(E)+2.0V,VEN=1.0V, IOUT=100mA
1020 1200 1380 kHz
PFM Switching Current
Maximum IPFM Limit
IPFM
MAX IPFM
When connected to external components,
VIN=VOUT(E)+2.0V, VEN=VIN , IOUT=1mA (*11)
VEN=VIN=(C-1) IOUT=1mA (*11)
120 160 200 mA
200 %
Maximum Duty Ratio
MAXDTY
VIN=VEN5.0V, VOUT=VOUT (E)×0.9V
100 -
-%
Minimum Duty Ratio
MINDTY
Efficiency (*2)
EFFI
Lx SW "H" ON Resistance 1
Lx SW "H" ON Resistance 2
Lx SW "L" ON Resistance 1
Lx SW "L" ON Resistance 2
Lx SW "H" Leak Current (*5)
Current Limit (*9)
Output Voltage
Temperature
Characteristics
RL H
RL H
RL L
RL L
ILeakH
ILIM
VOUT
VOUT topr
VIN=VEN5.0V, VOUT=VOUT (E)×1.1V
When connected to external components,
VEN=VIN VOUT (E)+1.2V (*7), IOUT =100mA
VIN=VEN=5.0V, VOUT=0V,ILX =100mA (*3)
VIN=VEN=3.6V, VOUT=0V,ILX =100mA (*3)
VIN=VEN=5.0V (*4)
VIN=VEN=3.6V, (*4)
VIN=VOUT =5.0V, VEN=0V, LX=0V
VIN=VEN=5.0V, VOUT=VOUT (E) 0.9V (*7)
IOUT=30mA
-40 Topr 85
- - 0%
- 92 - %
- 0.35 0.55
- 0.42 0.67
- 0.45 0.66
- 0.52 0.77
- 0.01 1.0
A
900 1050 1350 mA
- 100 - ppm/
-
-
EN "H" Level Voltage
VENH
VOUT =0V, Applied voltage to VEN,
Voltage changes Lx to “H” level (*10)
0.65 -
6.0 V
EN "L" Level Voltage
VENL
VOUT =0V, Applied voltage to VEN,
Voltage changes Lx to “L” level (*10)
VSS - 0.25 V
EN "H" Current
IENH VIN=VEN=5.0V, VOUT=0V
- 0.1
0. A
EN "L" Current
Soft Start Time
Latch Time
IENL VIN=5.0V, VEN=0V, VOUT=0V
tSS
When connected to external components,
VEN=0V VIN , IOUT=1mA
tLAT
VIN= VEN=5.0V, VOUT=0.8× VOUT(E),
Short Lx at 1resistance (*6)
- 0.1
-
1.0
-
0.25
-
0.1
0.4
20.0
A
ms
ms
Short Protection
Threshold Voltage
VSHORT
Sweeping VOUT , VIN=VEN= 5.0V, Short Lx at
1resistance, VOUT voltage which Lx becomes “L”
level within 1ms
0.675 0.900 1.125
V
Discharge
Rdischg
VIN = 5.0V LX = 5.0V VEN = 0V VOUT = open
200 300 450
Test conditions: Unless otherwise stated, VIN = 5.0V, VOUT (E) = Setting voltage
NOTE:
*1: Including hysteresis width of operating voltage.
*2: EFFI = { ( output voltage output current ) ( input voltage input current) } 100
*3: ON resistance ( )= (VIN - Lx pin measurement voltage) 100mA
*4: Design value
*5: When temperature is high, a current of approximately 10 A (maximum) may leak.
*6: Time until it short-circuits DCOUT with GND via 1 of resistor from an operational state and is set to Lx=0V from current limit pulse
generating.
*7: When VOUT(E)+1.2V<2.7V, VIN=2.7V
*8: 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.
*9: Current limit denotes the level of detection at peak of coil current.
*10: "H" VIN VIN - 1.2V, "L" + 0.1V - 0.1V
*11: XCM517xA / XCM517xB series exclude IPFM and MAXIPFM because those are only for the PFM control’s functions.
*12: The electrical characteristics shows 1 channel values when the other channel is stopped.
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